Home

RSS-131 User Manual - GE Measurement & Control

1. S 131 232 005 Cable connected to the male DB9 connector on the display Pec te eS ere aoe A ee er de il Ci j om Ree ISI port Red DB9 RJ 11 DB9 Pin 2 TxD gt 7 Pins XMT Pin1 Serial in White Black Box gt Pint tay EA pin Ed con Black converter y I Vorne Display GY2200 i HA pr XMT A I Serial in Pin 8 Gnd gt Pin 5 La Pin2 h LAA On OE Switeh Settings oy A 1 Switch Settings 1 2 3 4 1 2 3 4 5 6 7 8 9 10 Off Off Off Off On On Off Off On On Off Off Off On S2 1 2 3 4 Off Off Off Off Re Ne XMT Red Nes GND 7 If RJ 11 connector is not Blue White available remove RJ 11 and use terminal block with two conductor wire from XMT to Pin 1 Vorne Display XMT to pin 2 of Vorn Display yellow E RCV Black E Z Figure 18 S 131 ESD 003 RS 485 Serial Display System 182 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Mounting and Installation Requirements While the RSS 131 is a portable device it may also be permanently mounted in any orientation with suitably designed brackets and is not sensitive to detector orientation Generally the RSS 131 will be mounted with the cable connectors facing down The integral mounting flange on the top surface of the enclosure is compatible with tripod type mounting systems and will acce
2. 25 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Variable Three Description Range Default Digit 0 ID WindSpeed EA Wind speed points SPT Number of wind speed points in queue Wind speed interval SPI Seconds between wind speed points If this parameter is set to O no data will be gathered for this sensor Changing this parameter will delete all points in the 5000 queue before changing the point interval Wind speed alarm SAL Any sensor value that is lower than this level low value will trigger an alarm condition A value of 0 0 will disable this feature Wind speed alarm SAH Any sensor value that is higher than this level high value will trigger an alarm condition A value of 0 0 will disable this feature Wind speed constant SPC This value multiplied by the number of cycles second is the value recorded in the data queue and returned to the user lts default value is for the Young Wind Monitor Pressure AS Pressure points PPT Number of pressure points in queue Pressure interval Seconds between barometric pressure points If this parameter is set to O no data will be gathered for this sensor Changing this parameter will delete all points in the queue before changing the point interval Pressure alarm level PAL Any sensor value that is lower than this low value will trigger an alarm condition A value of 0 0 will disable this feature Pres
3. uR h HPIC 0 50 100 150 200 250 Seconds 17 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Directional Response One of the strengths of the HPIC is the uniform angular response to incident photons This is due to the spherical design of the detector as compared with cylindrical detectors that do not have 41 symmetry The directional characteristics are primarily due to the detector but are also affected by the packaging and internal components of the sensor As a result the response graph below does show a 2 reduction in signal in the direction of the mounting flange on the bottom of the sensor Even this small amount is usually not a factor since this flange is normally pointed to the ground For comparison a typical cylindrical GM sensor is also shown on the graph As can be seen the difference between the 0 and 90 is as much as 20 that can lead to significant errors depending on the direction of the photons relative to the detector orientation Figure 7 Directional Response 18 Copyright 2006 General Electric Company All rights reserved Alarms RSS 131 OM User s Manual Rev R The RSS 131 generates alarms when any of the sensors record a value that is above or below configurable thresholds for that sensor These threshold values are set using the serial HP command described later in this documen
4. L k Raz26 the average value of k corrected for the radiation energy spectrum of Ra226 by the relation k Raz26 0 91 x k Cs137 or 1 022 x k Coso M Calculate the radiation constant RAC The equation to do this is RAC k Ra225 RLN 1000 where RLN is a constant which varies from unit to unit This constant is supplied on the original calibration certificate from Reuter Stokes 170 Copyright 2006 General Electric Company All rights reserved Sample Calculations RSS 131 OM User s Manual Rev R Calculate Exposure Rate at distance D from Co60 source t years after source certification D 12 feet 365 8 cm t 3 37years 1230 8days T 5 26years 1920days E 100 1062 uR h 100 Examples En Ew 40 00 y D 2 x _ 68E 5 265 8 y 0 693 3 51 5 26 e 100 1 1062uR h 365 8 12 1062uR h 0 07475 0 982 0 63 E 49 1uR h Sensitivity of sensor at distance D from Cof source Example EXPOSURE P S A k CoS0 RATE k P S A S A Exposure Rate k 1275 73mv 396 24 mv 49 10uR h k 19 95 mv uR h 171 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R C Calculate the average sensitivity Example In a typical calibration the following values of k might be calculated Averagelk 19 95 D Calculate standard deviation o Example Using the data of Section C 1 n Oo DRE al n n 1
5. To program the board manually follow these steps Any serial terminal program may be used but the following steps assume Windows Terminal is being used e Connect the programming cable between the PC and board e Invoke Windows Terminal and configure it for 19200 N 8 1 with no handshake no local echo and no translation of CR to CR LF e Hit Enter on the PC The micro controller should echo its version string to the display If not verify you have the correct cable correct COM port and settings check connections and repeat e Type L and then hit Enter on the PC The cursor should move to the next line No new text will be added to the display at this time The micro controller is now waiting for the download e Inthe Terminal program select Transfers Send Text File from the menu Specify the Intel Hex file that contains the board program hpic hex or hpicer hex Click Send and the program will be transferred A progress bar on the bottom of the screen will indicate download status If local echo is enabled the contents of the hex file will be displayed on the screen Wait until the file is 100 complete This is indicated by the progress bar going blank and two gt characters being displayed one per line e Enter the string W MSL 0 e Enter the string FO 0 10 This will overwrite the signature string and force all parameters to return to their default values e Reconfigure the Windows Terminal program for
6. Aluminum Enclosure with integral mounting flange 2 part catalytic polyurethane paint Latches and Hardware Stainless Steel 7 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Micro controller The data acquisition board uses a Dallas Semiconductor DS2251T micro controller module This module contains 64K battery backed SRAM for code and 64K battery backed SRAM for data Both are guaranteed to maintain contents for 10 years in the absence of power at 25 C The board also has a real time clock that is also battery backed The time and date need to be set only once A block diagram of the board is shown in Figure 1 Real Time 64K Code Clock SRAM Watchdog SS 64K Data Timer SRAM 8 Channel 33 600 baud 12 bit A D 8051 compatible modem input microcontroller Optional Alarm 2 Serial Output AA Ports E y Optional ower i Serial Port Supply Figure 1 Micro controller Block Diagram 8 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Electrometer Principles of Operation The electrometer is designed to incorporate standard components and be stable over a wide temperature range To accommodate the wide dynamic range of the HPIC it has 3 ranges of operation
7. Once the file is selected a progress bar will be displayed indicating what percentage of transfer is complete Once completed the programming cable must be disconnected for the new firmware to execute Reprogramming the firmware resets all configuration parameters to their default values These will need to be reloaded from the Reuter Stokes CD and downloaded to the RSS131 For complete details please refer to Reprogram Firmware in later in this document Verify Firmware to RSS 131 This option verifies the code loaded in the RSS 131 matches the source file that is specified by the user This also requires the special programming cable S131 PRGC 001 be connected to COM1 on the RSS 131 The user will be prompted to ensure the cable is connected before being allowed to proceed Download Firmware Ensure that the programming cable is connected Cancel 81 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Once OK is selected the user will be prompted to enter the file containing the RSS 131 firmware using the Windows Common Dialog box This file HPIC HEX is found on the CD received from Reuter Stokes Organize y New folder Fie Name Date modified 4 Unspecified 2 HPIC hex 12 18 2013 8 22 A HEX File HPIC_ER hex 12 18 2013 8 22 A HEX File r File name X Hex Files hex z Once the file is selected the verification proces
8. Young Junction Box Wind Speed Alt o Wind Speed WS SIG red 1 3 Wind Dir WD SIG grn Wind Dir Ref WD EXC wht Rain Gauge 5 g Gnd WD REF blk 7 Gnd 124 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Serial Cable to connect Modem P3 to RJ 11 Jack Switchcraft 4 pin connector Female connector on cable RJ 11 Connector Switchcraft Part ENC4F TIP TIP RING RING 2 NC 3 NC 4 125 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R S131 232 005 Cable to connect RSS 131 COM2 4 to RS 485 Converter DEV27 1 Switchcraft 8 pin connector DB 9 on RS 232 RS 485 Converter Female connector on cable Female connector on cable Switchcraft Part ENC8F E 4 TxD RxD 2 2 3 3 RTS DTR 4 4 RTS 5 7 CTS 6 8 7 GND GND 8 D gt 126 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Tipping Bucket Rain Gauge Assembly Young 52203 Tipping Bucket Rain Gauge od RS Part S131 TB 001 Switchcraft Connector EN3C7F e S 131 001 26 Cable Z gt 2 4 Rain Gauge Input aa Gnd O KD RS Part MET1 6 Note This assembly assumes there are no wind speed or wind direction devices connected to the 131 These d
9. 0 to 100 mSv hr 5131 11x 20xxxx units 0 to 100 mR h 0 to 1 mSv h 5131 11x 10xxxx units Accuracy 5 at 10uR h Temperature drift 25 C to 55 C e Zero lt 0 5uR h e Gain lt 1 of reading e Angular Dependence lt 2 over all angles Auxiliary Measurements Internal Temperature High Voltage Bias Battery Voltage External Tipping Bucket Rain Gauge Barometric Pressure Wind Speed Wind Direction 2 x 0 5V Analog Inputs Data Storage 20 000 total data points storage interval 1 to 65535 seconds Sample Rate 1 second Real Time Clock lt 1 minute per month drift Power 6V internal battery optional NOTE replacement batteries can be purchased through GE part number BT6 1 or Power Sonic Corporation part number PS 650 LS Operating current 250mA maximum no internal modem 350 mA maximum with internal modem External Battery Charger or Solar Power optional NOTE replacement external battery chargers can be purchased through GE Refer to the available part numbers in the External Options section of the Configuration Matrix on page 176 Environmental Range 6 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 25 C to 50 C 0 95 RH non condensing IP54 Rated Serial Transmission 3 x RS 232 compatible ports standard Dial up Modem TBR21 compliant optional Mechanical Size 12 x 12 x 14 overall 31cm x 31cm x 36cm Weight 25 lbs 11kg
10. C COM C 2400 38400 C COM4 Use PC modem Cancel Most parameters take effect immediately once they are downloaded to the RSS 131 This includes communication parameters If the Configuration Utility is configured for one serial port in the Serial Setup window and settings for the RSS 131 serial port that is actually connected to the PC different from the Serial Setup port that is selected are changed parameter download will proceed with no errors until the RSS 131 COM port is reconfigured at which time communications will fail To correct this situation reconfigure the PC COM port as described previously to match the RSS 131 COM port settings 157 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Troubleshooting Flowcharts 158 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R No Version String Returned from RSS 131 Does Online Version work No Yes Is the 131 turned on No gt Turn on the RSS 131 Yes Does the 131 have power No Connect battery charger or solar panel Yes 6 the correc serial cable onnected No gt Connect correct serial cable Yes sthe PC COM port configured properly No gt Configure COM port to match RSS 131 No
11. EXC 133 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Power Cable without Charger Connects J4 to 6V Supply Housing Molex Part 22 01 3047 Vbat 4 NC 2 NC 3 GND 4 134 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Internal cable to connect electrometer to data board Electrometer connection Switchcraft 8 pin 10 pin Molex housing Part connector EN3C8EF for number 22 01 3107 for connection at electrometer connection at data board VCC 1 x RANGE1A RANGE1A o RANGE2 RANGE2 3 3 4 RANGE1B RANGE1B P 5 GND REED RETURN 5 12v V 6 6 GND GND 7 7 12v 12v 8 8 9 ELECT_IN OUTPUT SIGNAL GND 10 Connect to cable shield 135 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R External Connectors P2 P3 P4 P1 P7 P5 P6 P1 COM1 Serial Programming Port Pin Function 1 TxD Data sent from RSS 131 2 RxD Data received by RSS 131 3 NC 4 NC P2 COM4 Pin Function 1 12V depending on position of JP2 TxD Data sent from RSS 131 RxD Data received by RSS 131 RTS CTS NC 12V GND 0 Y DM amp W PR P3 Modem COM3 Pin Function 1 TIP connection to phone line 136 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R
12. Low Mid or High look at the next table to see which parameters will be used in the calculation DIGITAL_OUT1 DIGITAL_OUT2 Range 0 0 Low 1 0 Medium 0 1 High Digital Output Range Parameter Name Gain Zero Range Al A2 Bl B2 Low RLV RLN ZLD ZLN Mid RMV RMN ZMD ZMN High RHV RHN ZHD ZHN Parameters used in Sensitivity calculations For example if the unit is in the low range and the temperature was 25 C then A9It and Bit would be A 25 RLV 0 RLN A 25 RLN 149 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R B 25 ZLD 0 ZLN B 25 ZLN As a result Exposure R h V ZLN RLN RAC If V 1 0V ZLN 0 00 and RLN is 5 x 1011 and RAC RAC 2 61 x 108 then Exposure R h 1 0 0 00 5 x 1011 2 61 x 10 8 Exposure R h 7 66 x 10 5 76 6uR h 150 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Failure Modes Unit Does Not Change Ranges Correctly As mentioned previously the electrometer constants are critical to both accurate radiation readings and correct range changes If incorrect electrometer constants are used in the unit it will typically change from low to mid range properly but will not change back to low range If a unit is observed not changing ranges correctly verify it has the correct electrometer constan
13. QUEUES AAA O NAT 73 Upload Sensor Dat ii A A E dt 77 CODOS ELA A E A AAA a AA ii aii ad RE 78 Upload Configuration A dt 80 Download Configurations ii is da furent lat cdta 80 Download Firmware to RSS 13 1 vicccccccccccccsccccsesscssecesesesesesevececesecesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesesees 81 Verify Firmware to RSS I3 Doinne A id nn ati tr 61 RESCERES TILA A A aio dada tas 83 GRAPH MENU oaee a io 84 CSV EUC a A a a cle Bess 84 Graph Real Time Dali in di des lien dd id Seige be aii 86 MODEM EN A Re ee ee 88 DRA A o ll e A 88 HangUpssn sise AA RnB rte men Be Tea ga dence Sa ceva anda nt mit 68 TI S MENU 1 ne os nn ad eee ent 89 CONFIGURATION CAVEATS nn ns RAR id LE Re AE Ce 90 CONFIGURATION UTILITY EXAMPLES 2 0655 R Re isis 91 vi Copyright 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Reload Parameters from Configuration File sise 91 Change Number of Radiation Data Points iii eee 94 Change the Radiation Recording Interval sise 97 Changing Serial Setlnes isccssccssnciscsissstisessneiasessnssscvahesnassasbacsdeshoe ch ERE EE AEE EE Eaa ES RE SEE oE ra EE ETEA hE sa 99 Changing Alarm Settings ssl D aE EE EEE a EES EEEa EEE E rente de TE EE EEEak dust seen 101 R program Firmware in RSS I3 J cuota iris iereibis sensa si iaeaea ro kE o cease de een sne aee ra EE adan EERS Sita 102 Uploading Sensor Data from RSSI31 to the PC rennes ee
14. Serial Config FE L Serial Setup nu nn mu C COMI C 300 C COM C 600 Px Timeout secs Fo PC COM Port PC Baud rate PC Parity 131 COM Port C 4800 a None C COMI a 9600 C Even a COM2 a COM3 C 1200 C 19200 C Odd C COM3 C COM4 C 2400 C 38400 C COMA Modern init string Phone Number owes The Serial Config dialog box functions are PC COM Port PC Baud Rate PC Parity 131 COM Port Use PC Modem Modem Init String Phone Number Rx Timeout Copyright 2006 General Electric Company Selects which COM port on the PC is connected to the 131 Version 6 0 and later of the RSS 131 Configuration Utility support COM1 COM9 while earlier versions only support COM1 COM4 as shown above Specifies the baud rate between the PC and 131 This must match the baud rate specified on the 131 for its COM Specifies the parity between the PC and 131 This must match the parity specified on the 131 for its COM port Specifies which COM port on the 131 is connected to the PC via serial cable This must be specified correctly for downloading parameters to the 131 This checkbox determines if a modem is to be connected It must be checked if a modem is used If unchecked the modem init string and phone number fields will be hidden Optional string which will be sent to modem when it is initialized This is the phone number which will be dialed from the modem This is the receive timeou
15. Yes Enable sensorand No gt gt allow time to record data ed sensor enabl Yes Is data retrieved Noo Fatal error gt Yes 162 Copyright 2006 General Electric Company All rights reserved Upload configuration from 131 ctromete settings match certification sheet Yes Contact Reuter Stokes RSS 131 OM User s Manual Rev R No gt Read CFG file for 131 from CD supplied by Reuter Stokes 163 Incorrect Radiation Readings Download parameters to 131 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sensor Calibration Introduction Calibration is accomplished by placing the RSS 131 in a well defined radiation field and adjusting calibration constants to produce a prescribed output The exact details of a user s calibration procedure depend upon the equipment and resources available as well as the requirements of the user Calibration Check It is recommended to implement a rapid method of checking the stability of the sensor calibration The intent of the checking process is to identify substantial changes in instrument calibration The check consists of establishing a reproducible arrangement of a long half life isotopic source e g Cs137 and the installed sensor The increase in the sensor indication above background du
16. 004 Battery Charger Hong Kong Old style no CE HK cordset S131ER CD RSS131ER Application CD S131 BC 006 Battery Charger CE USA New style CE USA cordset SFTW 131 001ER RSS131ER Firmware S131 BC 007 Battery Charger CE EU Korea New style CE EU Korea cordset SFTW 131 002 RSS131 Config Utility S131 BC 009 Battery Charger CE Hong Kong New style CE HK cordset RSS 131 OM RSS131 User Manual PDF 131 BC 010 Battery Charger NJDEP Old style no CE NJDEP only 131 KIT STD 1 per unit S131 PRGC 001 Programming Cable One serves multiple systems RSS 131 OM RSS 131 User Manual 131 232 001 131 232 002 S131 SOLR 001 S131 AOC 001 CN7 10 CN7 11 CN7 12 CN7 13 EN3 8 S131 TB 001 MET1 6 S 131 001 26 S131 WND 001 MET1 9 S131 WDS 001 S131 KIT WR MET1 9 MET1 6 S131 TBWS 001 S 131 ESD 001 DSP1 1 S131 232 003 S 131 ESD 002 DSP1 4 S131 232 004 S 131 ESD 003 DSP1 5 S131 232 005 DEV27 1 COM1 RS 232 Cable COM2 COM4 RS 232 Cable Solar Power Option 6V Analog Cable 4 pin Switchcraft connector 6 pin Switchcraft connector 7 pin Switchcraft connector 8 pin Switchcraft connector Tripod Tipping Rain Bucket Assy Tipping Rain Bucket Tipping Rain Bucket Cable Wind Sensor Kit Wind Sensor Wind Sensor Cable Wind and rain kit Wind Sensor Tipping Rain Bucket Rain Wind cable assembly Ext Ser RS 232 Disp Kit 20 Ext Ser Marquee Display 20 Ext Ser Disp Cable DB9 Ext Ser RS 232 Disp Kit 7 2 Ext Ser Marquee Display 7
17. 2 Ext Ser Disp Cable Fly Leads Ext Ser RS 485 Disp Kit 20 Ext Ser Marquee Display 20 Ext Ser Disp Cable DB9 Black Box 232 485 Converter Only with ENG approval One per system Not with battery Backward compatibility w 121 Modem COM1 customer cable External power customer cable Wind rain customer cable Analog COM2 4 cust cable ncludes bucket and cable 10 feet long ncludes wind sensor and cable 10 feet long ncludes sensors and cable 10 feet long ncludes display and cable ncludes display and cable ncludes display and cable 175 S131 232 002 S131 PRGC 001 CN7 11 COM2 COM4 RS 232 Cable Programming cable Connector for external power The S131 CD contains all software and user manual for the 100 mR hr and 10 R hr units The S131ER CD contains all software and user manual for the 100 R hr ER unit Spare Parts Part Number Item S 131 001 10 S 131 001 43 S 131 001 20 S 131 002 20 Electrometer 100 mR hr 10 R hr Extended range electrometer ER unit DAQ board without modem DAQ board with modem Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R External Marquee Displays Overview The RSS 131 supports several external serial displays These are ordered as optional kits Each kit contains the display and cable The exception to this is the RS 485 display kit Since RS 485 implies t
18. 40 20 0 20 40 60 y 5 25E 08x 5 14E 11 Temperature 145 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R A similar analysis is performed for the electrometer zero Data is taken for a number of temperatures and the zero is measured A typical data set is shown below From this equation of the least squares fit the parameters B1 and B2 can be computed Since the temperature in equation 2 is t 25 the equation in the graph below must be adjusted as follows y 0 00 t 25 0 0336 y 0 00t 0 0336 Therefore 81 0 00 B2 0 0336 Electrometer Zero 0 040 0 035 0 030 0 025 0 020 0 015 0 010 0 005 0 000 Volts 30 20 10 0 10 20 30 40 50 60 y 0 0000x 0 0336 Temperature 146 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R In practice there are actually 3 ranges that must be tested and parameters calculated The table below shows the parameter names for each of the ranges Each of these parameters is tested at the factory and entered into the system using the P command Printed listings of these are also supplied in the event they parameters are lost In addition to the printed form a file is supplied which is used by the configuration utility so that the values can be easily downloaded to the RSS 131 without having to deal with individually enterin
19. C 300 4800 None None C 600 a 9600 C Even C RTS CTS C 1200 19200 C Odd C RTS Delay C 2400 The 131 Communication dialog box functions are shown below Note that the COM ports vary in their support for some features Not all those features listed below are available on all ports BAUD Rate Sets the transmission speed for the port Parity Selects Even Odd or No parity Handshaking Sets handshaking protocol for the port RTS CTS causes the RSS131 to activate RTS and wait for CTS active before sending data RTS Delay will cause the RSS131 to raise RTS and then transmit data regardless of whether or not CTS is active In this case there is a delay between RTS going active and data transmission This delay is specified in milliseconds in the text box associated with this option 65 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Electrometer The electrometer is characterized by a number of parameters that represent its operation over temperature These are divided into 2 sections Gain and Zero and are shown in the following 2 screens The values which are displayed in these screens are unique to each unit The values will be found on the calibration sheets received from Reuter Stokes fr E Electrometer m Sensitivity ohms m Temperature Drift ppm C Low 5 0E 11 Low fo Mid 25E 09 Mid fo High 25E 07 High fo The Electrometer Ga
20. Configuration from RSS131 If parameters have not been uploaded from the unit prior to changing settings incorrect values may be sent to the RSS 131 Ej Retrieving Parameters from RSS 1 2 From the menu select Configuration Ccommunications Select the COM port which is to be modified 3 Select the desired baud rate parity and handshaking if supported on the specific COM port FE _ COMI BAUD Rate y r Parity Handshaking C 300 C 4800 None None C 600 a 9600 C Even RTS CTS 1200 19200 C Odd C RTS Delay C 2400 99 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 4 Close the window by clicking on the X in the upper right corner 5 Download the configuration to the RSS 131 This will send all configuration parameters including the new serial parameters to the RSS 131 The new serial settings will take effect immediately on both the RSS 131 and PC when the serial commands for that particular COM port are sent from the PC to the RSS 131 Serial parameters sent prior to the updated serial settings will be transmitted at the original settings All communications after the updated serial settings will occur using the new values 100 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Changing Alarm Settings If itis desired to have the RSS 131 call a remote computer when a sensor obtains a
21. Online Menu All functions which communicate directly with the RSS 131 are found in the Online menu with the exception of modem functions FE 5 RSS 131 Configuration Utility File PC Configuration Graph Modem Utils Help Time Version Uptime Sensor Data A D Data Current Data Clear Data Queues Upload Sensor Data from RSS 131 Get Dose Upload Configuration from RSS 131 Download Configuration to RSS 131 Download Firmware to RSS 131 Verify Firmware to RSS 131 Reset RSS 131 71 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Time This dialog box provides 2 methods for setting the RSS 131 real time clock First is to enter the date and time and second to synchronize the RSS 131 with the PC clock FE Ey Set Date Time L RSS 131 Date Time Date 01 27 2014 Time 1 51 49 PM New Date Time Date Time PC Date Time Date 01 27 2014 Time 1 51 49 PM Set New Time Set To PC Time To synchronize the PC and RSS 131 clocks press the Set To PC Time button To set a different time enter the new date and time in the edit windows provided in the New Date Time section and press the Set new Time button NOTE The RSS 131 supports mm dd yy dd mm yy and yy mm dd formats The format specified in the RSS 131 must exactly match the PC format specified in the
22. ay 1 2 2 2 2 2 2 5 o 20 01 19 96 19 97 19 93 19 92 19 95 5 4 o 0 04 E Calculate coefficient of variation of individual readings V o 0 040 0 20 k 19 95 V 0 20 which is less than 1 and indicates acceptable data F Correct k Co to k Raz20 k Ra226 1 022 k Co60 1 022 x 19 95 mv uR h k Ra226 20 39 mv uR h G Calculating RAC parameter k Ra 1000 RAC RLN H RLN was measured during the Temperature Compensation Test see unit s Calibration Parameter Sheet or check the Electrometer parameters with the RSS131Config utility program 172 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Example k Ra 1000 RLN RAC k Ra226 12 31 mv uR h RLN 5 x 1011 12 31 mv uR h 1000 7 5x10 RAC 2 46 x 10 08 RAC 173 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sample Calibration Data Sheet Calibration Data Sensor Type 100 mR Hr Source Cs 137 BB 440 Serial Number Date of Certificate 12 1 94 Calibration Date 3 27 98 Exposure Rate at 1 meter 4 226 mR h Calibration Interval 12 months Temperature 70 F Customer Name STOCK Humidity 50 RH AS FOUND CALIBRATION DATA Distance Field Strenth P S A S A P___ Sensitivity Cs 137 Feet cm uR h V V V mV uR h 12 366 287 327 7 371 1 534 5 837 20 31 14 427
23. box shown here will appear For this reason the user is fr Verify Queue Clear able to recover this data Click OK to clear all data in the RSS 131 queues 75 Copyright 2006 General Electric Company All rights reserved x This will erase all data in all RSS 131 data queues You will not be Click Cancel to abort this operation and leave data queues intact OK RSS 131 OM User s Manual Rev R To clear all data queues the user should click OK Otherwise the user should hit Cancel to preserve all data points in the RSS 131 76 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Upload Sensor Data This selection provides the ability to upload data for a sensor to a comma delimited file that is compatible with Excel and other third party programs Following selection of the menu item the following dialog box will be displayed Fr E Upload Sensor D i Sensor t C Wind Speed C Aux A D C Wind Direction C Battery Voltage Pressure C Bias Voltage C Rain C Temperature Start End Date The Upload Sensor Data dialog box functions are Sensor Select the sensor whose data will be uploaded Start Start date and time of data End Ending date and time of data Note To download all data in the RSS 131 buffer leave the starting and ending date and time blank If a start date and time are specified an end dat
24. controller e Electrometer e High Pressure lon Chamber HPIC There are two different versions of firmware required to support the various RSS 131 versions It is crucial the correct firmware be loaded in a unit These firmware files have different names to indicate which systems they should be used in Applicable Units Firmware File Name 100 mR h S131 11x 10xxxx HPIC HEX 10 R hr S131 11x 20xxxx HPIC HEX 100 R hr S131 11x ERxxxx HPIC_ER HEX 2 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Micro Controller System A Maxim DS2251T micro controller module is used to gather sensor data and perform calculations The module contains the micro controller as well as separate RAM chips for data and program storage Dedicated batteries back up each RAM chip on the module These batteries maintain program and data for up to 10 years in the absence of power according to the Maxim data sheet Firmware can by updated through COM1 using a custom programming cable and the configuration program supplied with the sensor This allows new features and program updates to be sent to users for download into program memory without the need to return the product to the factory In addition to program memory there is data memory capable of storing a total of 20 000 data points along with date and time information for each point collected This allows the sensors to buffer large amounts of data for transm
25. described below will occur 3 times once for each range The electrometer employs an operational amplifier with the usual well known sources of temperature induced error These sources are input bias current input offset current input offset voltage Also the temperature stability of the feedback resistor is important All of these effects can be summed together and will have the general form shown below Vout Alt lin Bit 1 Where At A1 t A2 2 Bit B1 t B2 3 And t templ C 25 The Alt term represents the feedback resistance of the electrometer as a function of temperature and the Bit term describes the electrometer offset voltage as a function of temperature 144 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The graph shown below is the measured value of the feedback resistance of the electrometer vs temperature and a trend line indicating the least squares fit of the data In the lower left is the equation of this line From this equation we can compute the parameters Al and A2 shown in equation 2 above Since the temperature in equation 2 is t 25 the equation in the graph below must be adjusted as follows y 5 25E 8 t 25 5 14E 11 y 5 25E 8t 5 12E 11 therefore Al 5 25E 8 A2 5 008E 11 Electrometer Gain vs Temperature Feedback Resistor Value Ohms h mo eh mo mh h o ee o
26. ne ROPE Fr BER At ERE IEEE oO 139 TEMPERATURE COMPENSATION cccssssscssssscscssssccccssscccsssscccessssccccssssccssnsccssssseccccssccccsssacecesssaccecsssescesaceccssnees 143 Introduction ne rs ia a EEE REPRE ESR A RE Su ests 143 DEMS OL SUD ASSCIND LES A ina actina 143 EPI RRE RRE RS a 143 Electromedicina 144 ADE OO Ve ties 147 ANAL OG OU TRU AAA A A CAS NO 148 TAIT OUCH ON ds 148 OutputiCalibratiOniiicas dida iaa 149 FATE URE MODES scsi Messe dnsstecseteseaes dsasseccueceseedscsdusdetesedccdsesesasccectaceds euteuecsunsees sanders sosvedcedsasaussscesedsndbcsessseds 152 UNIT DOES NOT CHANGE RANGES CORRECTLY cccssssscecssseecesssececssseecessnncecsssaeeecsenaececsuseeceesaececsesaecessesaeeessaeeeeneaaeees 152 NO DATA RETRIEVED FROM UNIDs 0cisceseessne a R A E EE R E ESE 152 Detailed DateFormat Examples io A i 153 NO DATA DISPLAYED WHILE GRAPHING REAL TIME DATA cssscceceesseeesesscecesesceeceesaececsnseececaeeeceesaeeeceesaeeeseuseeeneaaes 155 NO COMMUNICATIONS WITH RSS 13 eperera e e EE T E E E E e EESE 156 COMMUNICATIONS FAIL PARTWAY THROUGH PARAMETER DOWNLOAD sise 157 TROUBLESHOOTING FLOW CHARTS sisssssesscssssessesssenssesescessoasseascesosesssbesessesoseesssesssseseseas sosaedeceseasoassstaen sta nuseseeses 158 SENSOR CAL TB RATION sas sssvendsssonsesisncuessdsestescsesouesseseaesosivadesedbbestseusicessusesdsbeusisstuuesssegusavsssovesdssustesssendecedssnses 164 INTRODUCTION aid 164 vii Copyright 2006 201
27. network Channel 0 is not used in the system 22 DIGITAL_OUT3 Optically isolated output controlled by serial commands Also available on P6 pin 3 23 PROG PROG pin on DS2251T used to place micro controller in bootstrap programming mode 24 CH6 Input to A D channel 6 This is the battery voltage output after it passes through a divider network 25 CH7 Input to A D channel 7 This is the temperature output with no divider network 26 300V_MON Input to A D channel 5 This is the bias voltage output after it passes through a divider network 27 12V 12V regulated voltage 28 WIND_SPEED_PULSE Wind speed pulses received from wind sensor 29 DIGITAL_OUT1 Optically isolated output controlled by serial commands Also available on P6 pin 6 30 AUX1 Not used 31 NC No connection 32 NC No connection 33 GND Ground 34 GND Ground 140 Copyright O 2006 General Electric Company All rights reserved DAQ Board with COM4 text at P2 RSS 131 OM User s Manual Rev R This board replaced the earlier board that had the daughterboard connection This board has been used on all newer RSS 131 units since late 1998 Pin Name Description 1 NC No connection 2 NC No connection 3 CH2 Input to A D channel 2 This is the barometric pressure sensor if present 4 CH4 Input to A D channel 4 This is the electrometer output after it passes through a divider
28. number of data points for a given sensor will actually be somewhat lower than the configured number if the unit loses power or there is a time gap in recorded data for any other reason When a time gap is detected the timestamp of the first point after the time gap must also be recorded This consumes additional space in the data queue which would have been available for data points For each timestamp recorded the number of available data points will be reduced by one If the system is reset and the signature block is not corrupted the number of data points for each sensor and the data in them will remain intact If however the signature block is corrupted or the system rebooted with the specification that the number of data points is to be reconfigured all data will be destroyed and the number of data points for each sensor will be reconfigured Details on rebooting the board are specified later in this document Configuration File Each RSS 131 ships from the factory with a configuration file containing parameters unique to that unit The electrometer constants and radiation conversion factor are the only differences from file to file These constants must be used in the unit for it to correctly measure radiation and change between ranges 5 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Specifications Gamma Measurement 0 to 100R h 0 to 1000 mSv hr 5131 11x ERxxxx units 0 to 10 R h
29. output since the saturation voltage for this level exceeds the 400V bias voltage This can be done because the saturation curve for the detector is the same from unit to unit and is verified by testing each sensor By knowing how the detector responds it is then possible to apply a correction to the output at levels above the level where the detector is linear with dose rate 15 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Radiological Accuracy and Calibration Accuracy is often misunderstood and can be confused with the statistical characteristics of the measurement Accuracy is a measurement of how well the detector reports a reading relative to the actual radiation present assuming the sampling time is long enough such that statistical errors are not significant Another component of accuracy is drift primarily caused by temperature variations in the environment or long term drifting over time Each of these issues is described in the following section Calibration Accuracy The calibration technique is very important since it determines the underlying accuracy of the measurement The accuracy of the calibration is affected by 3 major components the radiation source accuracy and radiation field stability during calibration and measurement error The radiation source used is nominal 12 mCi of Csa37 that is certified by NIST to an accuracy of 3 This certification establishes the best a
30. points in seconds For example if 30 seconds 1 2 minute is chosen the 500 data points will coincide to a total of 250 minutes For example the following sent to the remote would set the storage period to 60 seconds A0400060 lt CR gt 6 Reset This function provides a method of resetting the unit remotely To prevent an accidental reset the command must be sent with the data field containing 12345 For example if the unit address is 0 the complete command would be A0612345 lt CR gt Following reset the remote will echo back with the command acknowledging the request followed by the unit reset NOTE Caution should be used when sending this command since all setups will revert back to their defaults and data buffers will be cleaned It will not affect the data cartridge however except data recording must be re initiated 7 Set Phone Number 48 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R This command sets the phone number that will be dialed if a unit alarm condition is present This feature is only available if a Hayes compatible modem is installed and the modem connected to the dial up phone network An example of the command to dial 216 425 3755 is A072164253755 lt CR gt The unit will echo the command and new phone number confirming its acceptance To disable the automatic dial send this command with no phone number as shown below A07 lt CR gt M Com
31. reading which is above or below a certain threshold the RSS 131 must be configured to know both the threshold values and what phone number to call This example will demonstrate how this is done lt assumes the configuration utility is already running and parameters have already been uploaded from the RSS 131 so those in the PC memory match those in the RSS 131 6 From the menu select Configuration Sensors and select the desired sensor from the tabs at the top of the dialog box a E Sensor Configuration qu a o Rain Temperature Aux A D Pressure Bias Volts BattYolts HPIC Wind Speed Wind Dir Recording interval sec 50 Buffer si ne 000 Conversion factor Alarm Low 9 000001 2 500e 8 Alarm High 0 000020 Amps Unit Dose Unit Conversion Factor 1 000 Enter the low and high levels at which alarms are to be generated The values entered should take into account any unit conversion factor which is specified For example radiation is recorded internally as mR hr However if mSv hr is desired there would be a unit conversion factor of about 8 7 specified in the Unit Conversion Factor text box In such a case the alarm low and alarm high values should be multiplied by 8 7 To disable high and low level alarms for a given sensor specify either the low or high level to be 0 Once the alarm levels are specified the phone number which will be called if an alarm is detected must also be specified Thi
32. reset The E command begins the computation of a new radiation exposure rate similar to the D command but does not reset the data accumulators following data transmission The response format is identical with the D command except that the D is replaced by E L or Data Command The L command retransmits the last D or E response This is useful in case of a transmission error NOTE The L command allows a review of the data shown on the previous D command since no new average is computed The response format is identical with the D response except the D is replaced by an L 47 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R A Commands The A commands instruct the unit to set or change a system parameter The request format is AYNXXXXX lt CR gt lt LF gt Character ASCII Code 42 A Command Y Unit Address N Secondary Command see below XXXXX Data lt CR gt Carriage Return lt LF gt Line Feed 4 Set Storage Period The RSS 121 can store 500 data points that can be transmitted upon request Each data point is an average over a specified period which is set using this command The transmitted data must be a five digit number representing seconds with leading zeros and equal to one of the following numbers 5 10 15 30 60 120 300 600 900 These numbers correspond to the integration time of each of the 500 data
33. result in the change not taking effect Reset RSS 131 Select reset conditions g Leave all parameters and data intact This is the same as turning the unit off and then on OK c Restore all parameters including data buffer sizes to default values All data will be lost buffers using current settings Existing data will be Once this is complete the unit will operate the same as the older units 43 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R An Explanation of Data Buffer Operation A detailed example of data buffer operation provides a more thorough understanding of how the RSS 131 operates when backward compatible commands are used This example assumes the unit is configured for 10 000 radiation values the default value and MO commands are used to retrieve data The MO command retrieves the first 500 data points in the buffer This means the first 500 points will be transmitted until the entire buffer 10 000 values in this example is full 1 2 3 4 5 499 500 Data sent from RSS 131 with M0 command when 500 values are recorded 1 2 3 4 5 499 500 Data sent from RSS 131 with AMO command when 10000 values are recorded Once the buffer is full and additional data values are recorded the oldest values are shifted out of the buffer while the new ones are recorded at the end of the buffer This means
34. the first line no additional time stamps will be displayed However if a different duration is detected the time stamp of the next data point will be displayed before data is again sent If only a start date and time are specified all data from the start time until the present will be displayed If neither date nor time are specified all data in the specified queue will be displayed The end of data is indicated by an extra carriage return line feed pair EXAMPLES Q 1 4 01 01 80 05 30 00 12 01 80 13 00 00 lt CR gt to return radiation data between 5 30 00 AM 1 1 80 and 13 00 00 12 1 80 HQ 16 04 22 93 00 00 00 lt CR gt to return all battery voltage data since midnight 4 22 93 HQ 14 lt CR gt to display all radiation data from the start of the buffer regardless when that may be HQ 0 4 04 22 95 05 04 95 lt CR gt This is invalid since no separates the dates and no start time was specified Q 0 4 04 22 95 05 04 95 lt CR gt This is invalid since no start time was specified HQ 0 4 04 22 95 13 00 00 05 04 95 lt CR gt This is valid even though no end time was specified SAMPLE OUTPUT nnn Sample interval in seconds mm dd yy hh mm ss Displayed as dd mm yy if DTF configuration option 1 lt data gt lt data gt is displayed ten values per line so long as there is no time gap in recorded data followed by a five digit sum of the numeric values contained in the data values Each data value will be represented by fi
35. to dial in the event of an alarm Can include for delay Filter A software filter is used to smooth radiation values This filter uses a constant that can be from O to 3 A higher number results in more filtering and a smoother radiation response A value of 0 results in nearly instantaneous results without smoothing The default value is 3 Filter order 0 3 v This value changes how rapidly the radiation values change A higher number results in less variation more smoothing of data Values may range from 0 to 3 The default value is 3 69 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Backward Compatibility The option presented under this menu is for use only when the RSS 131 is integrated into a network which also contains older radiation monitoring units from Reuter Stokes RSS 1012 RSS 1013 RSS 121 which use the older D command There are two versions of the D command in the older units The default version used by most systems returns the battery voltage bias voltage sampling interval and radiation value However some systems used a different version which returned wind speed wind sensor battery and radiation values This option determines which version of the D command is used Fe SS E Backward Compatibility 70 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R
36. under control of the microprocessor values shown and equations that follow are for the lower range units not the extended range units A block diagram of the electrometer is shown below Range 2 400pf if C3 S1 2 5 x107 1M J R3 R2 R1 10K F7 U1A LM6042 Range 1B Range 1A de 11M 0 O lt lt MN 1pf lin f Reed K1 Il C4 Switch so A LM6042 U1B Y 9 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Range Selection In the most sensitive lowest range switch K1 and S2 are connected as shown above This routes the current from the HPIC to flow through the lower amplifier section generating an output of Vout IxR5 Vout I x 5ell If the dose rate increases such that the output of the electrometer exceeds its full scale output the microprocessor will switch both K1 and S2 to disconnect the lower amplifier and connect the upper as well as open S1 In this configuration the output of the electrometer is R1x R2 R1 V TIx2 5e7x100 out V T x2 5e9 out Vo 1x R3x out If the output again reaches the full scale value the unit will change range again to the highest measurement range by closing switch S1 which disables the gain provided by R1 and R2 which means the output is V TIxR3 out Vie 1x2 5e7 out Electrometer Zero
37. used are up to the calibration system designers The sample calculations show measurements taken at 10 12 14 16 and 18 feet Safety Observe radiation safety practices when working with a radioactive source Due to the weight of the lead shield insure the stand that holds them is stable Equipment Data collection system to monitor and average the analog output signal Cs137 or Co60 Radiation source and holder Shield lead bricks Work area of about 25 8m by 6 2m Keep ion chamber at least five feet in front of a wall to reduce reflected radiation effects o npp Procedure Set Up Equipment A Attach sensor head enclosure to tripod and adjust height to approximately 60 1 5m from floor to center of chamber B Hang a plumb line from a point under the chamber housing on chamber centerline to the floor See Figure 12 to determine chamber center on bottom of housing C From this point on the floor measure values of D 10 12 14 16 and 18 in a direct line D Attach read out housing to sensor head housing with the cable provided E Attach the data collection system to the analog 1 0 output of sensor F Set source at the 10 foot mark the same height above the floor as the chamber centerline See Figure 13 165 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Figure 12 HPIC Dimensions Relative to Center of lon Chamber 166 Copyright O 2006 General El
38. 0 feet long Includes display and cable Includes display and cable Includes display and cable 131 CD SFTW 131 001 SFTW 131 002 RSS 131 OM 131ER CD SFTW 131 001ER SFTW 131 002 RSS 131 OM 131 KIT STD RSS 131 OM 131 232 002 S131 PRGC 001 CN7 11 RSS131 Application CD RSS131 Firmware RSS131 Config Utility RSS131 User Manual PDF RSS131ER Application CD RSS131ER Firmware RSS131 Config Utility RSS131 User Manual PDF 1 per unit RSS 131 User Manual COM2 COM4 RS 232 Cable Programming cable Connector for external power The S131 CD contains all software and user manual for the 100 mR hr and 10 R hr units The S131ER CD contains all software and user manual for the 100 R hr ER unit Spare Parts Part Number Item S 131 001 10 S 131 001 43 S 131 001 20 S 131 002 20 Electrometer 100 mR hr 10 R hr Extended range electrometer ER unit DAQ board without modem DAQ board with modem EXTERNAL MARQUEE DISPLAY scsssssssssssssrsesssssrsessessrsessessssessecsrsesscssssessessssessesessessessssesscssssessessssessessseesseee 17 OVERVIEW A Copyright O 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R SOFTWARE CONFIGURATION i retea ne Ten nn re en nee te tre en EE a E end nn er en tas q 177 RS 232 1 x 10 Marquee Display S 131 ESD 002 oooonncnincnionionnnonnonnconoconocnnocnnonononononn nono nnnn ono nonn
39. 0085 0086 0 COM3 9600 N 8 1 Direct connect _FEeoOmaovV _TT _ EU 6 Once all sensor data has been retrieved the CSV file may be viewed directly by Microsoft Excel or other programs which support CSV files 7 This process must be repeated for each sensor 8 The data will appear in the CSV file as shown here The first column is the time stamp and the second column is the data value 8 24 2001 10 36 0 0073 8 24 2001 10 37 0 0072 8 24 2001 10 38 0 0076 8 24 2001 10 39 0 0074 8 24 2001 10 40 0 0074 8 24 2001 10 41 0 0073 8 24 2001 10 42 0 0071 8 24 2001 10 43 0 0072 8 24 2001 10 44 0 0069 8 24 2001 10 45 0 0071 8 24 2001 10 46 0 0072 8 24 2001 10 47 0 0073 8 24 2001 10 48 0 007 8 24 2001 10 49 0 0072 8 24 2001 10 50 0 0072 8 24 2001 10 51 0 0074 8 24 2001 10 52 0 0071 8 24 2001 10 53 0 0073 108 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Saving Current Configuration to Disk This example shows how to store the current configuration as it exists in the RSS 131 to disk on the PC This is a two step process The configuration information must first be uploaded from the RSS131 This configuration information must then be saved to disk The file saved to disk is ASCII format and can be viewed with any editor such as WordPad NotePad or Microsoft Word Step One Upload Configuration Information from RSS131 1 From the main window select Online Uploa
40. 06 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Modem Notice Type of Service The RSS 131 is designed to be used on standard device telephone lines It connects to the telephone line by means of a standard jack called the USOC RJ 11C or USOC FJ45S Connection to telephone company provided coin service central office implemented systems is prohibited Connection to party lines service may be subject to state tariffs Telephone Company Procedures The goal of the telephone company is to provide you with the best service it can In order to do this it may occasionally be necessary for them to make changes in their equipment operations or procedures If these changes might affect your service or the operation of your equipment the Telephone Company will give you notice in writing to allow you to make any changes necessary to maintain uninterrupted service In certain circumstances it may be necessary for the Telephone Company to request information from you concerning the equipment that you have connected to your telephone line Upon request of the telephone company provide the FCC registration number and the ringer equivalence number REN both of these items are listed on the equipment label The sum of all of the RENs on your telephone lines should be less than five in order to assure proper service from the Telephone Company In some cases a sum of five may not be useable on a given line If pr
41. 1 SERIAL INTERFACES te tn er SE E Aus 21 SERIAL COMMAND SUMMARY 3 03066 rentre tn ent een hate init ati urines 22 CUSTOM CHECKSUMIERC a MUR mn Re An nn M Re nt nie 23 CONFIGURATION GOMMANDS cc ete dont MR I tn en nant hr 24 Command Syntax La AE A ne nee Be a ina aan wee BW oies tennis nine bus 24 COMMONS PREE A A rm aes A ies ee LR ives Begs int tS 24 DATA COMMANDS se nn id 34 Clear Data Queue AC den nn ei ie rien ee rte ne A et eee 34 Display Oueue Data RO A tement nent Roi NO eine Ernie tie 35 Display Sensor Data AS lt lt e ii dt au AS Rte et M ae evi Rte eaves 38 See Time and Date RAT pts enr is 39 Get ODUM OE coach ves NS SUR a Rd resta aT teed I el 40 Get Version Information V in ann WTR in 40 COMPATIBILITY WITH OLDER RSS 1013 RSS 121 UNITS o cccnocnconoconononcnnocnncnnononononononooccnon nooo nococonononcnoconocononos 41 DATA BUFFERS soci sie Sette initie tia 41 Detailed steps to configure RSS 131 data buffers to act like older units ss 4 An Explanation of Data Buffer Operation ss 44 v Copyright 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R BACKWARD COMPATIBILITY COMMANDS A D E L FM AND SJ serrer 45 D or Data Command With reset sieste 46 E or Data Command without reset cccccccccccccssccccccssecesssscecesssececssseeeeesnneecsssaeeecseaaeseseeecsesaeeecseaaesesseeeessesaeeesneaeeeess 47 E EDI ss 47 AMM e a OS 48 Mi lia 49 ES IR
42. 1 A D TEST Input to A D channel 0 after it passes through a divider network Channel 0 is not used in the system 2 CH1 Input to A D channel 1 Channel 1 is not used in the system 3 CH2 Input to A D channel 2 This is the barometric pressure sensor if present 4 CH4 Input to A D channel 4 This is the electrometer output after it passes through a divider network 5 RXD Received data line for COM1 6 CH3 Input to A D channel 3 This is the wind direction sensor after it passes through a divider network 7 HPIC_OUT Output of the electrometer after it passes through a divider network It is also available on P6 pin 1 8 VBAT Battery voltage after passing through a fuse 9 WIND_SPEED_ALT Wind speed ALT signal 10 DIGITAL_OUT2 Optically isolated output controlled by serial commands Also available on P6 pin 2 11 TXD Transmit data line for COM1 12 VBATT Battery voltage direct from the battery 13 PF PF signal on DS2251T micro controller module 14 NC No connection 15 SPI_MISO SPI Master In Slave Out signal from devices to DS22511 16 VCC 5V regulated voltage 17 NC No connection 18 SPI_CLK SPI Clock signal 139 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 19 SPI_MOSI SPI Master Out Slave In signal from DS2251T to devices 20 12V 12V regulated voltage 21 CHO Input to A D channel 0 with nodivider
43. 1 OM User s Manual Rev R Uploading Sensor Data from RSS131 to the PC This example will detail the steps necessary to upload historical data for one of the RSS131 sensors radiation battery etc to the PC The Configuration Utility does not support uploading data for all sensors at once uploading data for more than one sensor requires multiple uploads Once uploaded to the PC this data will be stored in a Comma Separated Value CSV file that may be read directly into Microsoft Excel for graphing or other analysis 1 From the menu select Online Upload Sensor Data from RSS131 2 The Configuration Utility will verify communications with the RSS131 Once communications are successful the following will appear G F3 Upload Sensor D Sensor HPIC C Wind Speed C AuxA D C Wind Direction C Battery Voltage Pressure C Bias Voltage C Rain C Temperature Start End Date Date i Time Time o upload all data leave date times blank Cancel 3 Select the desired sensor in the upper portion of the screen In this example radiation data will be uploaded from the RSS131 To upload all data for the specified sensor leave the Start and End fields blank To upload sensor data only for a particular time frame enter both Start and End values Click OK once all data is selected correctly 106 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 4 Once
44. 131 firmware version information COMMAND V yy lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding RESPONSE The version information will be returned A typical display looks as follows lt CR gt SFTW 131 001ER Ver 5 0 EXAMPLES V 0 lt CR gt to return the version information 40 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Compatibility with Older RSS 1013 RSS 121 Units The RSS 131 supports a significant subset of the serial commands used on the older RSS 1013 and RSS 121 units hereafter referred to as the older units This section describes differences in operation between the modes as well as the older commands which are supported NOTE This mode of operation is not recommended for systems made entirely of RSS 131s It should be used only on existing systems which include both RSS 131 and older units where existing central collection software is already in place using older commands Data Buffers The older units supported fixed buffer sizes of 300 or 500 points based on the firmware version The RSS 131 can emulate these older units with a fixed buffer size using the supported backward compatible commands but specific steps must be taken These are listed below e Configure the radiation buffer for 300 or 500 points e Reset the unit with the option that preserves the number of data points specified not
45. 2 RING connection to phone line 3 NC 4 NC P4 COM2 Pin Function 1 12V depending on position of JP2 2 TxD Data sent from RSS 131 3 RxD Data received by RSS 131 4 RTS 5 CTS 6 CD Carrier Detect from radio if supported on radio 7 12V 8 GND Pos pos pr Meteorological Sensor Pin be NOM FW PD Function WIND SPEED ALT WIND SPEED WIND DIRECTION WIND DIRECTION REFERENCE RAIN GAUGE GND GND O Connector Pin be OND M amp W DP Function HPIC_OUT voltage read from electrometer DIGITAL_OUT2 DIGITAL_OUT3 AUX1 connected to A D converter channel 1 input ALARM V DIGITAL_OUT1 ALARM GND GND External Power Charger Pin 1 Function VBAT 137 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 2 GND 3 NC 4 CHARGER 5 CHARGER 6 CHASSIS GND 138 Copyright O 2006 General Electric Company All rights reserved Internal Connectors J3 Test Connector The pinout of this connector varies depending on which version of Data Acquisition Board is present in the system To determine which type of board is present examine the text around the Switchcraft connector at P2 on the board DAQ Board with Daughterboard Port at P2 This board was used on only the very early RSS 131 units until late 1998 RSS 131 OM User s Manual Rev R Pin Name Description
46. 210 224 5 587 1 339 4 248 20 21 16 488 160 287 4 421 1 192 3 229 20 15 18 549 126 123 3 610 1 072 2 538 20 12 Average Cs 137 Sensitivity 20 22 Standard deviation 086 Percent Variance 0 427 Average Ra 266 Sensitivity as found 19 98 NIST National Institute of Standards and Technology formerly NBS 174 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS 131ER Configuration Matrix Communications Internal Options S131 11 1 0 E RR 0 5 0 0 Internal COMI com2 coms Sensor Range Barometric Pressure ous Unused 0 No modem 1 RS232 1 RS232 M Modem 10 100 mR hr 0 None 0 None Always 0 20 10 R hr 1 800 1100 hPa mb 5 5 A hr 30 Cust 100 mR hr 2 600 1100 hPa mb 40 Cust 10 R hr ER 100 R hr External Options Standard Items for Every System Part Number Description Note Part Number Item DEV2 87 Battery Charger No CE mark Old style no cordset large 131 CD RSS131 Application CD DEV35 1 Battery Charger CE mark New style no cordset small SFTW 131 001 RSS131 Firmware 131 BC 002 Battery Charger USA Old style no CE USA cordset SFTW 131 002 RSS131 Config Utility S131 BC 003 Battery Charger EU Korea Old style no CE EU Kor cordset RSS 131 OM RSS131 User Manual PDF 131 BC
47. 4 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R CALIBRATION CHECK SENSOR CALIBRATION PROCEDURE A sisessudeasestasiaceattodaes er M ner at se capers soconuea vestaesavessuetuyaaebeedess E Equipment RTE Eiaa EEE EEE DEAETE Procedure RSS 131ER Configuration Matrix Communications Internal Options S131 1 1 0 E R 0 5 0 com com2 COM3 Sensor Range Barometric Pressure ie Unused 0 No modem 1 RS232 1 RS232 M Modem 10 100 mR hr O ANone 0 None Always 0 20 10 R hr 1 800 1100 hPa mb ss Ahr 30 Cust 100 mR hr 2 600 1100 hPa mb 40 Cust 10 R hr ER 100 R hr External Options Standard Items for Every System Part Number Description Note Part Number Item DEV2 87 DEV35 1 131 BC 002 131 BC 003 131 BC 004 131 BC 006 131 BC 007 131 BC 009 131 BC 010 131 PRGC 001 131 232 001 131 232 002 S131 SOLR 001 S131 AOC 001 CN7 10 CN7 11 CN7 12 CN7 13 EN3 8 131 TB 001 MET1 6 S 131 001 26 S131 WND 001 MET1 9 S131 WDS 001 S131 KIT WR MET1 9 MET1 6 S131 TBWS 001 S 131 ESD 001 DSP1 1 S131 232 003 S 131 ESD 002 DSP1 4 S131 232 004 S 131 ESD 003 DSP1 5 S131 232 005 DEV27 1 Battery Charger No CE mark Battery Charger CE mark Battery Charger USA Battery Charger EU Korea Battery
48. 6 F factor A table of these correction factors is shown below 1 314 1 223 1 178 Figure 5 Correction Factors To use these factors assume you were measuring Co and a dose rate of 150uR h was measured To correct this reading this value should be multiplied by 0 98 yielding 147uR h 14 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Saturation Characteristics The issue with the saturation of the detector is to insure that all of the ions generated are measured If the bias voltage is not high enough some of these ion recombine which effectively means the output is no longer linear with exposure rate The voltage required to collect all of the ions generated is termed the saturation voltage which varies with the dose rate being measured A typical saturation curve for dose rate levels of 1 0 and 10 0 mR h is shown below 1mR h 10mR h Normilized Output 0 10 20 30 40 50 Bias Voltage Figure 6 Saturation Curves To insure collection of all the ions a voltage of about 13 volts is required if the field is 1mR h and a bias of 49 volts at 10mR h For the standard range of 100mR h the saturation voltage is approximately 125 volts which is well under the 400 volt bias voltage applied to the detector Range Extension As an option on the RSS 131 the range can be extended to 10R h To accomplish this a correction must be applied to the
49. 9600 N 8 1 so it matches the default parameters in the 131 e Connect the normal serial cable from the PC to the RSS 131 e Remove the programming cable This will cause the micro controller to go through a reset and the program will execute 113 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R normally The 131 will not execute code until the programming cable is removed 114 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Diagnostic Commands There are a number of serial commands that are only used for internal GE diagnostic purposes They are not intended for customer use These commands are documented only for informational purposes B Display A D data Display queue data as it is written for one input Reboot device Table 6 Diagnostic Serial Commands Display Raw A D Data B This command will display raw A D data for all channels and the electrometer range One line will be sent every time new data is available which occurs once per second It will continue to do this until any character is received at the COM port The A D values are the raw values the micro controller reads at its input port connected to the Analog to Digital converter A table of the A D inputs and their functions are described in the following table The wind speed electrometer ranges and rain gauge are not actually A D inputs but are include
50. A O E RON 51 INTERNAL OPTIONS si scssessssssssdsssessessseassssensacsuseccssvaiasssensscsssveesseadeessseasseessucceesssossssaebessoess seas sevens casusecssssbaeensssesaceaseeasees 53 PRESSURE SENSOR ta E A E A a Aa a a Re tte RAS 53 MODEM ee ee 54 EXTERNAL OR TIONS cnica scenes anne nine AAA shsdsuevbesesvansebesteselsaevessesantsessesves Sovestess 55 SERTAL DISPLAY et 55 RSS 131 CONFIGURATION UTILITY esisssissssssccsesseasctacbetessessessssesecdsesescossvdeccevevtesssssudecesviedecseescaadandecdesssesedasesdesiecoassss 56 OVERVIEW ret A cade EEE altas 56 MODEM SUPPOR Todd tddi 56 INSTALLATION cont it tit At TE OE E e ad tits 57 COMMAND LINE PARAMETER TO SPECIFY COM PORT c cccccscessssssseeecececeesssaececececsessaaeceeececsensassecececeeeasseceeseeenenseaeees 58 PE MENU src tt de dt cidos 60 Sertal Conflict A 61 CONFIGURATION MENU Line a en are de tt Te tire een 2 ares AT REA 62 G n ral nn en ON 63 Communications CONFIQUIATION osito paisa cold ladridos rita 65 Ele COME A coh BAO AES AS he heh at Rk BS he Sh ae ots etant tte tol oe 66 Sensor CONPISUTATION A sagvsostasesaciesssshepoape saga EDan ESES oaa oa e EEE Eea Eisi 67 SENSOT OVEFVIEW AN 68 AMD A A rata 68 VTA AAN O A RT O TO TA 69 lt IO IAS AA A 70 ONLINE MENTA a is 71 TIMO A A A MN E SAREE A A a 72 PAART RE ER N E a EEA 73 AAA O RN O 73 YAKTO ES DGG ten a E E dsd 74 PY DY DULG lt A AL ads A AA ES A I OR ETE IE RE Cas Baa 74 CULLENEDAA lt A SS ne 75 Cle r Data
51. Charger Hong Kong Battery Charger CE USA Battery Charger CE EU Korea Old style no cordset large New style no cordset small Old style no CE USA cordset Old style no CE EU Kor cordset Old style no CE HK cordset New style CE USA cordset New style CE EU Korea cordset Battery Charger CE Hong Kohg New style CE HK cordset Battery Charger NJDEP Programming Cable COM1 RS 232 Cable COM2 COM4 RS 232 Cable Solar Power Option 6V Analog Cable 4 pin Switchcraft connector 6 pin Switchcraft connector 7 pin Switchcraft connector 8 pin Switchcraft connector Tripod Tipping Rain Bucket Assy Tipping Rain Bucket Tipping Rain Bucket Cable Wind Sensor Kit Wind Sensor Wind Sensor Cable Wind and rain kit Wind Sensor Tipping Rain Bucket Rain Wind cable assembly Ext Ser RS 232 Disp Kit 20 Ext Ser Marquee Display 20 Ext Ser Disp Cable DB9 Ext Ser RS 232 Disp Kit 7 2 Ext Ser Marquee Display 7 2 Ext Ser Disp Cable Fly Leads Ext Ser RS 485 Disp Kit 20 Ext Ser Marquee Display 20 Ext Ser Disp Cable DB9 Black Box 232 485 Converter Old style no CE NJDEP only One serves multiple systems Only with ENG approval One per system Not with battery Backward compatibility w 121 Modem COM1 customer cable External power customer cable Wind rain customer cable Analog COM2 4 cust cable Includes bucket and cable 10 feet long Includes wind sensor and cable 10 feet long Includes sensors and cable 1
52. Dose Unit Conversion Factor 1 000 4 Close the window by clicking on the X in the upper right corner 5 Download the configuration to the RSS 131 This will send all configuration parameters including the updated recording interval to the RSS 131 E RSS 131 Configuration CA File PC Configuration Graph Modem Utils Help Time Version Uptime Sensor Data A D Data Current Data Clear Data Queues Upload Sensor Data from RSS 131 Get Dose Upload Configuration from RSS 131 Download Configuration to RSS 131 Download Firmware to RSS 131 Verify Firmware to RSS 131 Reset RSS 131 COM3 9600 N 8 1 Direct connect 6 The new recording interval will take effect immediately after the next radiation value is recorded 98 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Changing Serial Settings It may be desirable to use serial settings other than the default values of 9600 baud 8 data bits 1 stop bit and no parity This example shows how to change these settings Once the sequence shown is complete both the PC and RSS 131 will be operating on the new settings 1 Start the RSS 131 Configuration Utility It will upload the current parameters from the RSS 131 into PC memory If the configuration utility is already running but parameters were not uploaded when the program started you should manually do this now by selecting Online Upload
53. Drniarte gt D Projects laa File name RSS 131 cfg v Cfg Files cfg 7 The configuration file will now be saved to the location specified 110 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Configuring the External Serial Display This example shows how to configure the external display It assumes the display is connected to the RSS 131 by the correct serial cable S131 232 003 1 Make sure the switches on the display are set as follows To view the switches the small metal cover on the back of the display must be removed Switch Position Off Off Off Off On On Off Off On On WO 0 IN ID o IW je Eb o 2 Power on the display A message should scroll repeatedly on the display It should read 9600 BAUD 8 DATA NO PARITY 1 STOP 00 ADDRESS 3 From the main menu select Configuration General The screen shown below should appear 111 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Date Format mm dd yy dd mm yy yy mm dd Radiation Label mRyhr C uSv hr uGy hr E General Unit Configuratio Unit Address fo M 100ms Watchdog Non standard checksum CRC combination External Display Port e None C COMI C COM C COM4 m External Display Length a 10 characters C gt 10
54. G THE LOCK WIRE USED TO SECURE THE LATCHES LOCK WIRE MUST BE REINSTALLED AFTER SERVICING AND SEALING THE ENCLOSURE TO ENSURE CONTINUED SAFETY OF THE PRODUCT THIS INSTRUMENT DOES NOT INCLUDE PROTECTIVE GROUNDING WIRES IT SHALL BE THE RESPONSIBILITY OF THE USER TO PROVIDE APPROPRIATE GROUNDING OF THIS DEVICE WHEN LOCATED IN AN AREA WHERE THIS MAY BE REQUIRED CONSULT LOCAL ELECTRICAL CODES AND NORMATIVE REGULATIONS FOR APPROPRIATE GROUNDING REQUIREMENTS THE OPTIONAL INTERNAL BATTERY USED IN THIS INSTRUMENT IS A SEALED LEAD ACID BATTERY AND SHALL ONLY BE REPLACED WITH AN IDENTICAL REPLACEMENT AVAILABLE FROM GE REUTER STOKES USE OF ANY OTHER BATTERY MAY CAUSE DAMAGE TO THE CHARGING UNIT OR THE INSTRUMENT Copyright 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R GE Oil Gas RSS 131 ER RSS 131 Battery Disposal Gamma Radiation Monitor Instructions NO OW FP WY Re This product may contain Alkaline Nickel Metal Hydride Lithium or Lithium ion batteries In accordance with the European Directive 2006 66 EC batteries and accumulators are marked with the crossed out wheeled bin which indicates that they cannot be disposed of as unsorted municipal waste in the European Union The marking may also include a chemical symbol Pb for lead Hg for mercury and Cd for cadmium indicating that the battery contains substances classified as hazardous by the European Commission Users of batteries must
55. GE Oil amp Gas RSS 131 ER RSS 131 User s Manual Part Number RSS 131 OM Revision R March 2014 8499 Darrow Road Twinsburg OH 44087 This document and all information and expression contained herein are the property of GE Oil amp Gas Reuter Stokes Inc and is provided to the recipient in confidence on a need to know basis Your use of this document is strictly limited to a legitimate business purpose requiring the information contained therein Your use of this document constitutes acceptance of these terms Copyright 2006 2014 General Electric Company All rights reserved Contains Proprietary Information RSS 131 OM User s Manual Rev R Revision History Revision Revision History Date K Overall update September 2006 L Converted to standard format November 2006 M Added support for yy mm dd format February 2007 Added detail around backward compatible mode Added description of failure modes Added example of reloading parameters from disk N Added datasheet for battery disposal November 2008 P Added replacement part number notes for the January 2014 battery and external power supply Removed references to Solar Panel Changed business name from Energy to Oil amp Gas Added connector panel graphic Added IP54 rating to Environmental section R Extended support for PC serial ports COM1 COM9 March 2014 instead of just COM1 COM4 Added documentation on command line parameter to overrid
56. J0 4 lt CR gt to display radiation values on the serial port which receives the command as they are written to the queue with software version gt 1 5 J0 7 lt CR gt to display temperature values on the serial port which receives the command as they are written to the queue with software version gt 1 5 118 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Reset System Y This command will reboot the data board Data may be cleared and parameters reset to their default values as well Care must be taken since if default parameters are restored using either the 1 or 2 options all COM parameters including baud rates will be reset This could cause radios and other serial devices to stop working if they are not running at the default baud rates Rebooting the board using any of these options will cause any connection to the board through the modem to be disconnected Beginning with RSS 131 firmware SFTW 131 001 version 2 0 the reset string was made larger to prevent noise on the line from accidentally causing resets This longer string consists of 12345 after the original string COMMAND Y yy v lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding o v determines if the existing data is deleted 0 Do not delete all data is left intact 1 Reset data all data queues are reinitialized and parameters reset t
57. Marquee Display S 131 ESD 003 This external display contains its own RS 485 interface However the RSS 131 contains only RS 232 interfaces This means an RS 232 to RS 485 converter is required This converter is provided as part of the kit from GE Specifics of the kit are shown in Table 9 DSP1 3 Serial marquee display with 1 line by 10 characters RS 485 interface S131 232 005 RSS 131 serial cable COM4 This is connected between the RSS 131 and the RS 232 RS 485 converter DEV27 1 RS 232 RS 485 converter This is connected to the serial cable S131 232 005 on one side The other side must be connected to customer supplied RS 485 wiring Table 9 S 131 ESD 003 Serial RS 485 Display Kit Components The system should be set up as shown in Figure 18 The S131 232 005 cable must be connected to COM4 All components except the 2 wire connection between the RS 232 RS 485 converter and external display are provided as part of the kit The display contains two DB9 serial connectors The customer provided wiring should connect to the male connector 181 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS 131 to RS 485 Display Hook up This cabling must be supplied by the customer The converter is rated for up to 9 miles 14 4 km The cable must have a female DB9 connector and must be
58. OK is clicked a dialog box appears prompting for a file name The Configuration Utility will store the data in a CSV file whose name is specified by the user Organize New folder Bee amp Windows C Name Date modified 2 J admig L HPIC Data D Logs MSOCache New folder L PerfLogs J Program Files JL Program Files x86 ProgramData L admig 01 27 2014 1 3 JL HPIC Data 01 27 2014 3 Logs 01 23 2014 2 3 MSOCache 10 09 2013 9 New folder 01 27 2014 34 Perflogs 07 13 2009 11 L Program Files 10 16 2013 8 4 JL Program Files x86 01 25 2014 3 2 _DenneamNats AL IATIINAA 7 Projects 4 m File name TestData csv Save as type CSV Files csv r X z Hide Folders 5 After entering a file name select Open Data will now be uploaded from the RSS to the Configuration Utility A message will appear to let the user know what is happening Uploading sensor data from RSS 131 Please Wait 107 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R While data is uploading from the RSS131 individual values are displayed on the status bar located at the bottom left of the main window This data changes with each line of data received from the RSS131 E RSS 131 Configuration SET EEE __ ii File PC Configuration Online Graph Modem Utils Help Recvd 0082 0082 0082 0083
59. PC or not no further alarms will be generated for this sensor until the alarmed condition is removed and appears again 20 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Serial Communications Serial Interface The unit supports up to four serial ports identified as COM1 through COM4 COM1 COM2 and COM4 are standard on all systems COM3 is dedicated to an optional internal modem COM1 COM2 and COM4 all act as standard RS 232 serial ports COM1 supports only 8 data bits one stop bit and no parity at 1200 2400 4800 9600 and 19200 baud COM2 and COM4 support all standard baud rates up to 115 000 However the micro controller cannot keep up with sustained throughput at rates above 9600 baud COM2 and COM4 allow the number of data bits and parity to be changed dynamically through the Configuration Utility RTS CTS handshake is also available on these ports Changes are effective immediately without requiring a reset COM3 consists of an optional 33 600 baud modem This port is dedicated solely to modem functionality and cannot be used for any other function It will automatically adjust to the baud rate and parity of the received data Simultaneous transmission is supported on all serial ports However due to the nature of the multitasking operating system the lower numbered ports such as COM1 have priority over the higher numbered ports such as COM4 If only short messages are b
60. Regional Settings available from Control Panel on the PC If these are not matched an incorrect possibly invalid date will be set in the RSS 131 Also the RSS 131 does not support a as the separator between month day and year so a must be specified in the PC Regional Settings as the date separator 72 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Version Selecting this option will retrieve and display the version string from the 131 firmware No dialog box appears until the version string is retrieved or the communications fail FE RSS 131 Version SFTW 131 001 Ver 6 0 Uptime This option displays the elapsed time since the RSS 131 was last reset F RSS 131 Uptime Uptime 0 Days 0 Hrs 24 Mins 73 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sensor Data The sensor data screen will continuously display the sensor data This data is in engineering units Data will update once per second To terminate this display press the X in the upper right hand corner of the window FE amp Sensor Values py HPIC Wind Speed Battery Voltage Wind Direction High Voltage Bias Pressure Temperature Aux Data Rain A D Data The A D output window is similar to the sensor data except it displays the raw A D values To terminate this display press the X in the up
61. Since the characteristics of the electrometer vary with temperature it is important to know these characteristics One of the most important is the drift of the zero voltage with temperature The zero is affected by 2 contributing components input bias current and input offset voltage Input offset voltage affects the output directly so if the offset is 2 mV the output will be offset by 2 mV Input bias currents are currents that flow into the inputs of the amplifier and relate to the output by the following relationship Va offset pias R5 To measure the zero in situ it is necessary to disconnect the HPIC from the amplifier and monitor the output voltage with no signal current flowing To do this in the low range S2 remains in the low range connecting the output to amplifier U1B The input switch K1 however is switched up disconnecting the input from U1B In this configuration the zero can be measured Conversely to measure the zero in the mid and high ranges switches S2 and K1 are reversed Zero Drift Compensation To minimize electrometer drift with temperature the electrometer characteristics are measured at the factory and reduced to a series of constants These constants are entered in the microprocessor s non volatile memory and used to compensate for temperature drift Each range is characterized by 4 constants that represent the electrometer as shown in the 10 Copyright O 2006 General Electric Company All rights reser
62. VD1 27 2014 3 48 44 M Auto Scale Y MinY o Mex Y oor 011 OK Print 87 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Modem Menu The modem menu is used to dial and hang up the modem Modem initialization strings and phone numbers are set on the PC Serial Configuration menu ia 55131 Coniguaton ity a File PC Configuration Online Graph Utils Help Dial Hangup COMS3 9600 N 6 1 PC Modem Dial Selecting the Dial option causes the program to dial the modem using the phone number and COM port configured in the PC Serial Config screen Once a connection is made all commands in the Online menu except firmware download and verification can be run as though a direct connection existed Resetting the RSS 131 while connected via modem will work but the modem connection will be lost when the RSS 131 resets If this option is selected when a call is already in progress no action will be taken Hangup This will cause the phone connection between the PC and RSS 131 to be dropped 88 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Utils Menu This utils menu provides a mechanism to calculate the electrometer range offsets for the entire system These offsets are critical to correct range changes with varying dose rates This is done at the factory but can also be done in the field if an electr
63. ach portion are noted Sensor Sub Assemblies The sub assemblies of the sensor are e High Pressure lon Chamber HPIC e Electrometer e A D Converter Each sub assembly has a different source of temperature induced error These are modeled separately as shown in the following diagram I KO Vout i A D Converter HPIC R Electrometer PPIG The key detector property is gamma sensitivity expressed in amps R h The gamma sensitivity is determined by gas filling volume wall material and thickness Since these factors are essentially invariant over the operating temperature range of the RSS 131 temperature has no significant effect on gamma sensitivity In addition since all leakage currents are removed by the guard ring construction of the chamber there is no temperature induced offset signal from the detector Therefore the detector is characterized by a single 143 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R temperature independent parameter RAC A typical value for this parameter is 2 5 x 108 amps R h Electrometer The electrometer has 3 different feedback resistors that provide three operating ranges to allow for the measurement of a wide dynamic range For simplification only one range is shown in this section In practice the method of compensation described applies to each range so each of the parameters
64. actual port being used to communicate with the RSS 131 The PC baud rate and parity must be set to match the same parameters on the RSS 131 COM port The RSS 131 COM port used to communicate with the PC must also be correctly identified This is used if configuration parameters are downloaded from the PC to the RSS 131 When serial parameters are sent from the PC to the RSS 131 the RSS 131 changes baud rate data bits and parity immediately upon receiving these new values This means the PC must also change its serial parameters to match the RSS 131 If the incorrect RSS 131 COM port is specified the wrong serial parameters will be used when reinitializing the PC COM port When configuration parameters are downloaded to the RSS 131 the PC will automatically changes its serial configuration to match the RSS 131 No user intervention is required For example if the PC and RSS 131 are currently configured for 9600 n 8 1 operation but the user wants to change parity to even he would specify this on the Configuration Communications screen No changes would be made on the PC Serial Config screen COM settings would not be changed until configuration parameters are downloaded to the RSS 131 _ RSS 131 Configuration Utility File Configuration Online Graph Modem Utils Help Serial Config COM3 9600 N 8 1 No modem 60 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R
65. ata 4a HPICData csv 06 05 2007 2 57 PN Logs bh MSOCache JL New folder J Perflogs JL Program Files JL Program Files x86 ProgramData Projects File name HPICData csv X csv Files csv a Once the Open button is selected the graph will appear on the screen 84 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Graph of CSV file CARSS131 ENG1 Dose Rate cs File Edit Tools View Gallery Help sana e SWE BA AeH QRS A ROON ee aru jee a jamja sad la nal Lt 0 01 06 12 2013 06 12 2013 06 12 2013 06 12 2013 Done Print The graph can be printed by selecting Print Many options can be changed using the toolbars above the graph 85 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Graph Real Time Data This option allows the user to graph data real time As a data point is obtained in the RSS131 it is immediately added to the graph The graph can contain up to 1 000 data points If the graph already contains the maximum number of points and a new data value is received the oldest value is discarded and the newest one added The user must select which sensor is to be graphed as well as the time of the first data point Once these are entered the Configuration Utility will retrieve historical data beg
66. atchdog Non standard checksum CRC combination External Display Port None C COM1 C COM2 C COM4 Figure 15 External Display COM Port Selection 177 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The external displays ship from the factory configured for 9600 baud 8 data bits and 1 stop bit The RSS 131 COM port used to communicate with the display must be configured for the same parameters refer to Figure 16 If the user changes settings on the display the RSS 131 port must also be reconfigured Communications Configuration BAUD Rate Handshaking C 300 4800 None None C 600 9600 C Even RTS CTS 1200 19200 Odd C RTS Delay C 2400 Figure 16 External Display COM Settings 178 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RS 232 1 x 10 Marquee Display S 131 ESD 002 This display kit consists of an RS 232 display and the cable which connects it to the RSS 131 No other components are required and no additional configuration beyond that which was described previously is required DSP1 4 Serial marquee display 1 line by 10 characters with RS 232 interface S131 232 004 RSS 131 serial cable This is connected between the RSS COM2 or COM4 131 and the display Table 7 S 131 ESD 001 RS 232 1 x 10 Marquee Display Kit Components This display has ten switches
67. ate formats Make sure the correct format is set in the RSS 131 using the P DTF serial command before setting time and date if there is any doubt of which format is currently specified COMMAND HT yy dddd tttt lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding dddd Date which is to be set This must be entered in the form mm dd yy tttt Time which is to be set This must be entered in the form hh mmiss It must be in 24 hour format from 0 to 23 RESPONSE The HPIC will echo the time back to the user lt CR gt 03 25 97 02 24 35 EXAMPLES HT O 12 12 96 18 30 0 lt CR gt to set the date to 12 12 96 and the time to 6 30 00 PM HT 0 03 25 97 2 24 35 lt CR gt to set the date to 3 25 97 and the time to 2 24 35 AM TO lt CR gt to display the current time 39 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Get Uptime U This command returns the number of minutes the device has been monitoring since the last reset COMMAND U yy lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding RESPONSE The uptime information will be returned A typical display looks as follows lt CR gt Uptime 3 Days 6 Hrs 4 Mins EXAMPLES HU 0 lt CR gt to return the length of time the system has been operational Get Version Information V This command will return RSS
68. be retrieved If start date and time are both specified but no and no end date time all data points from the specified start time until the current time will be retrieved If neither start nor end times are specified all data points in the queue will be displayed If an end date eeee below is specified both the start date and start time must be specified If an end date is specified however the end time may be omitted In this case the end time will be midnight of the specified end date Values entered are not required to be exactly two digits For example February 7 1998 could be entered as any of the following strings 02 07 98 2 7 98 02 7 98 2 07 98 02 07 1998 2 7 1998 02 7 1998 or 2 07 1998 The data will be returned in the units listed below The only one that may be returned in different units is radiation 4 The default unit is mR hr but other units may be returned by changing the radiation unit parameter using the HP HEU n command where n is the new unit conversion factor For mR hr a value of 1 0 the default should be used For custom values other units may be specified For example 00879 could be specified for Gy hr If data is being downloaded and the user needs to terminate the download before transmission is complete the download may be aborted by send three carriage returns This will cause the transmission to stop and C will be echoed to the user COMMAND HO yy n ssss tttt eeee uuuu lt CR
69. ber of points for an individual sensor is configurable Care must be taken not to exceed a total of 20 000 points in the configuration If more than 20 000 points are specified memory integrity will be corrupted and operation will be unpredictable This will require the program to be reloaded If a sensor is not used the number of data points for that particular sensor may be set to 100 A small number of points is required even if the sensor is not used This will provide additional storage for points from other sensors The default number of points for each queue is listed in Table 1 4 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R S Default Default points recording interval seconds Wind speed Wind direction Barometric pressure 60 OFT Radiation 60 10000 OFT 60 1000 1000 1000 Temperature Battery High voltage 1000 bias Rain Table 1 Default Number of Points and Recording Intervals The RSS 131 firmware will not allow the number of data points for a specific sensor to be less than 100 If any number of points greater than or equal to O and less than 100 are entered the system will default to 100 points This lower limit for each sensor must be taken into account when determining if the total number of sensor data points is over 20 000 In addition the Configuration Utility also will not allow more than 20 000 data points to be specified The
70. cable TxD RxD 1 2 RxD TxD 2 3 PROG 3 GND GND 5 RTS 7 CTS 8 The programming cable is identical to the standard serial cable except the PROG signal coming out of the board is tied to ground 121 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R S131 232 002 Serial Cable to connect Data Acquisition Board COM 2 to PC DB 9 Not for Programming Device Switchcraft 8 pin connector DB 9 on PC Female connector on cable Female connector on cable Switchcraft Part ENC8F Vbat dE AA ee TxD RxD 2 2 RxD TxD 3 3 RTS RTS 4 7 CTS CTS 5 8 CD 6 Vbat 7 GND GND J 122 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Serial Cable to connect Data Acquisition Board COM 2 to External Modem Not for Programming Device Switchcraft 8 pin connector Female connector on cable Switchcraft Part ENC8F 123 4 Vbat TxD RxD 2 RxD TxD 3 RTS RTS 4 CTS CTS 5 6 CD Vbat 7 GND GND DB 25M on PC Male connector on cable eee Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS 131 to Young Wind Monitor JR Model 05103 Switchcraft 7 pin connector Female connector on cable Switchcraft Part ENC7F
71. ccuracy achievable The field variations during calibration are minimized by performing measurements with and without a lead shield in the path of the primary beam of radiation By subtracting these two measurements the background and the scattered components of the source are eliminated A more detailed explanation of this calibration method is provided in the appendix Last is the measurement error as a result of statistical and experimental error Two techniques are used to minimize these errors long averaging times and repeated calibrations at multiple distances Averaging times are selected to reduce the statistical errors to a negligible amount in comparison to the 3 source accuracy Performing multiple calibrations at a number of distances insures reproducibility since regardless of the distance the calibration factor of the detector should be the same For a complete description of the shadow shield method refer to the appendix Temperature Drift Temperature drift is minimized in two ways in the design of the RSS 131 First is by incorporating a differential FET front end in the electrometer This differential FET is used to measure the current generated by the ion chamber In previous designs a single FET was used which required the FET to operate at an experimentally determined operating point to minimize drift By using a matched pair of FET s the majority of the temperature dependency is removed However some characteristics of th
72. character field and will float as appropriate Once the 0 command is executed and the data computed and transmitted the internal registers are reset in preparation for a new averaging period If a transmission error occurs the 1 command will request the same data be retransmitted 1 Last Radiation Data The response to the 1 command is similar to the 0 command The data is a retransmission of the exposure rate calculated from the last 0 command This function is useful if the original data is garbled due to a transmission error As with the 0 command the five character field will contain a floating decimal point 51 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 7 Integration Time The 7 command will request how long the unit has been averaging data The time is transmitted in the minutes that the unit has been integrating the exposure rate average The time is multiplied by the exposure rate average to compute the accumulated exposure 8 New Radiation Data No Reset The 8 command is identical with the computed new sensor command described earlier except the data accumulators are not reset following the transmission of data Note Commands 2 3 4 5 6 are not used 52 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Internal Options Pressure Sensor The board supports an optional pressure sensor for determi
73. characters 4 Select the Radiation Label that is to be displayed on the external display 5 Select the External Display Port that will be used to communicate with the display 6 Download the changed parameters to the unit by selecting Online Download Configuration to RSS 131 7 As data points are recorded in the RSS 131 they should now be shown on the display as well 112 Copyright O 2006 General Electric Company All rights reserved Appendices RSS 131 OM User s Manual Rev R Program Loading Program loading requires a custom cable S131 PRGC 001 that must be connected to COM1 This cable ties the PPROG signal on the micro controller to ground The pinout for this cable can be found in the Interconnecting Cable appendix at the end of this manual When this cable is connected the RSS 131 is held in reset and is not gathering data After the unit is programmed and the programming cable removed the RSS 131 will immediately reset At this point default parameter values will be used to ensure a known state of the board These parameters can be changed at a later time using one of the serial ports and a n ASCII terminal or a PC with the Configuration Utility RSS131Config exe A complete list of parameters is included in this manual The configuration utility is normally used to load the firmware but it may also be done manually by using a terminal program This procedure is described below Manual Program Loading
74. cn psc e ASTE ET EA EET Aena E E E TE DERRIDA ao ADE 2 MICRO GONTROELER SYSTEM aaaea a EE EEEE E te in sn nn Pen mn ane shen rm en mnt al E a 3 LECTROMETER 330 soup aE T Or A ET le ee mn Aries Rennes ent ten en en nt nn me ne ee VA ent tetes 4 4 LD PNEUS LOS STE RER seca sat ceapueees ET E 4 CONFIGURATION FILE ss sert sous rm rra entre E enr nn ne nt nn sn tte nn tester 5 SPECIFICATIONS sisssssssstcesssssassssovssvasssaossnscessessous cane ssaseueseuaddvsesoaseaadonns dons ensesosusoedesvostaesasecsocssnesooadesassasounsscasoasoesscuassaasevese 6 MICRO CONTROLLER 4 ici cccossecut h 055 td COTENT EK e dae 8 EEE CTROMETER caia A di 9 Principles of OPC Quon yin a de lcd o dro nent de li idas idea 9 Range Selection iii eos E a T dl ee 10 Electrometer Zero tint ees Rig ees te a ive wits Min et Na Re 10 Zero Drift COMPENSADA A A euch ae Caos UPL US 10 HIGH PRESSURE TON CHAMBER nin iia 12 Principles Of Operation a ivi a il de HOUSE 12 ENVOY RESPONSE a dunce ete een ie cuahegs ce vig sae eu in a Aen 13 Saturation CNG ACLETASTICS riens nets ee tan ce ices state a a Meet 15 RADIOLOGICA ras 16 Accuracyand CANDIA a e AA iS das site BEG 16 Calibration Accurd aiii 16 Temperature Dri id aii desde uns 16 Statistical RESPONSE lt a idol tes 16 Directional Responsesn id ida 18 NU SR TS 19 SERIAL COMMUNICATIONS iivsssscssscessassosseccscasossssassoescsoasessesassveconsasosssoassosscesasesoussonsscosoassdusszoaaonesoaseseassobvesnssasosassessos 2
75. ction as expected It is very likely radiation readings will not be correct if parameters are not uploaded prior to making changes since electrometer parameters are unique to each unit For this reason the message box shown here will appear fr Warning Downloading parameters to the RSS 131 will overwrite all parameters currently in the RSS 131 with the values currently shown in this program Is this what you want to do If the user selects Yes all configuration parameters in the RSS 131 will be overwritten by the values in the Configuration Utility If the user selects No there will be no changes made on the RSS 131 80 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Download Firmware to RSS 131 This option reprograms the firmware in the RSS 131 A programming cable S131 PRGC 001 must be used This cable must be connected to COM1 on the RSS 131 Once this cable is connected the RSS 131 enter reset and will no longer record data You will be prompted to connect this cable before starting the download process as shown here r Download Firmware Ensure that the programming cable is connected Cancel Next the HEX file containing the new firmware must be selected This file is found on the CD that is supplied when units are purchased The file is named HPIC HEX for the 100 mR h and 10 R h units but is named HPICER HEX for the 100 R hr RSS 131ER units
76. d Command Format The D E and L commands use the same format CY lt CR gt Character ASCII Code 42 C Command Character Y Unit Address lt CR gt Carriage Return Character The valid command characters are D Data Command Reset Accumulators E Data Command Do Not Reset Accumulators L Last Data Command 45 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R D or Data Command with reset This command calculates the exposure rate and transmits it along with other system information After responding the data accumulators are reset and begin a new data averaging period The response is D Y M SSSS HHHH BB BB AAAAA EEEE CC lt CR gt lt LF gt D Command Y Unit Number M Not Used always 0 SSSS Status Information See Table 6 HHHH 0000 Not Used BB BB Battery Voltage AAAAA Sensor Data in mR h EEEE Minutes the Unit Has Been Averaging CC Check Sum Sum of All Digits not including the D or Y Nor the Check Sum Itself lt CR gt Carriage Return lt LF gt Line Feed STATUS DIGIT DESCRIPTION MEANING OF DIGIT 1 rightmost CPU STATUS O OK 1 ERROR A D STATUS O OK 1 ERROR sare STATUS Ok 1 LOWKEON ALARM FLAG 0 NO ALARM 1 ALARM Table 6 Meaning of Status Flags 46 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R E or Data Command without
77. d Configuration from RSS131 2 The Configuration Utility will verify communications with the RSS131 Once communications are successful the following will appear Ej Retrieving Parameters from RSS 1 3 While parameters are being retrieved from the RSS 131 the they are displayed on the status bar located on the bottom left of the main window Ey RSS 131 Configuration SCEE EHHI File PC Configuration Online Graph Modem Utils Help Received BAH 8 500 COM3 9600 N 8 1 Direct connect 4 The parameters are now ready to be saved to disk Click OK to close the Upload Complete message box Step Two Save Configuration to Disk 5 Select File Save As from the main menu 6 A dialog box will appear prompting the user for a file name This file will have a CFG extension indicating this is a configuration file It is recommended the file name contain the RSS131 serial number for easy identification Enter a unique file name and select Save 109 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Organize y New folder 4 iMi Computer a 4 amp Windows C EEN J admi E HPIC Data HPIC Data a ogs Logs n sai h MSOCache ache New folder New folder Perflogs oe Program Files h Program Files x86 _ ProgramData Name gt JL Program Files gt L Program Files x86 gt L ProgramData L_
78. d be entering the commands on any serial terminal This requires the user be familiar with the serial protocol used by the RSS 131 A more convenient way of configuring the RSS 131 is through the RSS 131 Configuration Utility This utility works with both the RSS 131 and the lower range RSS 131 When the configuration utility starts all configuration parameters are set to default values These are local values stored only on the PC at this point These values are not sufficient for accurate radiation readings in every system The offsets and gains of the electrometer vary by system and are determined during calibration For this reason the configuration utility attempts to upload parameters from the RSS 131 on startup The values uploaded from the RSS 131 overwrite the default values in the PC This prevents the user from changing one parameter but not all of the electrometer constants and sending default values to the RSS 131 The configuration utility allows users to modify parameters and then store them to disk or download them to the RSS 131 In addition to configuration a number of online functions are provided These include setting of the RSS 131 real time clock display of the sensor values in real time and downloading new firmware to the unit a programming cable is required to reprogram the RSS 131 firmware Modem Support The configuration utility supports modems for remote access starting with version 2 2 0 This allows parameters to b
79. d for completeness of sensor data o wWindspeed Unused E Barometric pressure Wind direction HPIC radiation High voltage bias Battery Temperature Electrometer range Rain gauge COMMAND B yy b lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding e RESPONSE 115 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The data read from the A D converter will be returned Channels are displayed in ascending order from left to right with channel 0 displayed first followed by channel 1 channel 2 and so on The current electrometer range is displayed in the 9th column while the A D resistor scaling is in the 10th column Rain volume is located in the last column Electrometer ranges column 9 are defined as follows 0 low range normal operation 1 middle range normal operation 2 high range normal operation A D resistor scaling column 10 is defined as follows 0 scaling not active 1 scaling active A typical display will look as follows lt CR gt 0000 0000 0000 0000 95 00 3917 3355 777 0 0 O 0000 0000 0000 0000 0000 110 0 3930 3314 777 0 0 O 0000 0000 0000 0000 0000 106 0 3921 3247 777 0 0 O 0000 EXAMPLES B 0 lt CR gt to read all A D channels continuously 116 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Display queue da
80. d potential When gamma photons pass through the detector they interact with the steel wall as well as the argon gas to generate ionized argon gas molecules The amount of ionization produced is primarily a function of the number of photons the gamma ray energy and the incident direction of the photons In practice it is assumed that the directional effects average out and that the energy and flux are the most important The ionization produced will be swept to the anode and cathode by the electric field within the detector and this generates an electric current that is a function of the incident flux and photon energy a 10 SS Sphere 1 8 Ceramic to Metal Seal 2 Spherical anode 25 atmospheres of Argon Anode support rod Figure 2 HPIC Diagram The effect of energy on the output is important since the desired relationship is for the energy response is to be airlike This means the response of the detector will be proportional to the ionization produced in air The actual energy response is described in the next section The range of the detector is also an important factor To guarantee a linear output with gamma intensity it is necessary to collect all the ions generated before they recombine and therefore are not measured To ensure this occurs the bias voltage must be high enough to collect all of the ions This condition is called saturation The higher the gamma field the higher the voltage required to achieve sat
81. des the ability to put the units in a multidrop system that uses RS 485 If not being used in such a system the ID may be specified as which will cause any unit that receives the command to respond The unit ID specified in serial commands must be the same as the ID of the unit or a which will cause any unit that receives the command to respond Care must be taken when using the as the ID in a multi unit system however since all units in the system will respond and may result in contention on the communication link If a command is entered incorrectly the unit will not echo an error message This is to prevent contention on the communication link in a multi unit system D RSS 1013 compatible command P Parameterdisplay modify NT Display queue data from start time to end time S Display sensor data one time pro Settimeanddate jv Getversioninformation_______ Table 3 Common Serial Commands 22 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Custom Checksum CRC The Q and D serial data commands support an optional custom checksum CRC which is stronger than the standard ASCII checksum calculation For backward compatibility this option should not be used as the older Reuter Stokes systems do not support this The checksum CRC is calculated by adding up the ASCII values of all the characters in the given string which is from the beginning of t
82. e 106 Saving Current Configuration to Disk sise 109 Configuring the External Serial Display siennes 111 APPENDICES A E E E A E P E soscescs sunecussceesesesctasesesedesesescsessussesesecuecdesbescsssuececsevdeasdvensees denis eee 113 PROGRAM EQADING Sisi ia 113 Manual Program Loading 000 Is A A Re A See es A es a ea A pe 113 DIAGNOSTIC COMMANDS A ere en tenS inner en ob iuckekosetinnGhineeceuasheesveidiv tbe 115 Display Raw A D Data BBY i sti ee eats A DEAN bop oes PU At ED A ap ne a A A ey oe CRUE 115 Display queu data asitis Written Alia da eas le api as 117 Reset SIS EN Ai ANR MT ER te 119 INTERCONNECTING CABLE PIN OUTS 0 cccssccesssscecesssececeessececseccecessaeeecsesaececeeseeesesueeecsesaececseseesessaeeecsesaeeecsesaeeesseeeeeneaaes 120 INTERNAL WIRING DIAGRAMS 2 58 inner e 133 EXTERNAL CONNECTORS oss sicstsscsitss d0 cost ee5s ieee 03 sestati eaa EAEE ENEE AA AAA Add danse AA AA aa 136 PI COMI Serial Programming Port sisi 136 PLOMO ais 136 P3 Modern COMBLER a ni ae ea evi vba tS 136 PAS COM A daras Tasa ld PC SURE SORES a RPT PORE SSE TREE ADS SE Dd USE EE USE eT 137 P5 Meteorological Sensor unit tn dl di iii bd 137 POL FONCONNECIO E i e mere une A A ai 137 P7 External Power Charger anses id dd de ii ii 137 INTERNAL CONNECTORS iississsccsssssssccsssosecessssiccssusssccssvecsessnsessesessabivsssscssuvesscesescsscebescdsshiessdsccvecesbusdeassiadesesbebeeestoees 139 JW WAY ECONNE CO ER ECE ts A A a RO re BREE fn
83. e and time must also be specified NOTE The RSS 131 supports mm dd yy dd mm yy and yy mm dd formats The format specified in the RSS 131 must exactly match the PC format specified in the Regional Settings available from Control Panel on the PC If these are not matched an incorrect possibly invalid date will be set in the RSS 131 Also the RSS 131 does not support a as the separator between month day and year so a f must be specified in the PC Regional Settings as the date separator 71 Copyright 2006 General Electric Company All rights reserved Get Dose RSS 131 OM User s Manual Rev R It is sometimes desirable to know the total dose over a specified time period The RSS 131 does not calculate this value as it is dynamic This option allows the user to enter start and end times p 5 Dose for Specified Time Period o _ me ie Start Date 27 2014 End Date 01 27 2014 Start Ti 2 22 21 PM 1 EndTi 3 22 21 PM ES al ime el n ime Ez GetDose Done Once these are entered and the user clicks on the Get Dose command button the Configuration Utility uploads sensor data from the RSS 131 and then calculates the total dose over this period Ose tester A E Start Date o 27 2014 End Date ja 27 2014 Start Ti 2 22 00 PM 2 EndTi 3 22 00 PM Js art Time nd Time Dose 008 mR NOTE The RSS 131 supports mm dd yy dd mm yy and yy mm dd formats The format specif
84. e changed from a central site without traveling to remote sites Once a connection is made to the RSS 131 all online functions are accessed exactly as though the connection was over a standard serial cable The connection is made through the Modem menu items 56 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Installation The RSS 131 Configuration Utility is installed by running the SETUP EXE program on the CD This file should be found in a directory named RSS 131 Cfg Util ver x xx where x xx is the version number of the utility shipped on the CD By default the application will install to the C Program Files RSS131 Configuration Utility directory This location may be overridden to specify a different drive or directory When setup begins a welcome dialog box will appear see Figure 8 Welcome to the RSS131 Configuration Utility ver 6 0 installation program Setup cannot install system files or update shared files if they are in use Before proceeding we recommend that you close any applications you may be running Exit Setup Figure 8 RSS 131 Configuration Utility Welcome Dialog Box Clicking the OK command button will display another dialog box that allows the user to change the installation drive and directory see Figure 9 To change the installation location click on the Change Directory command button and specify a new location To install
85. e electrometer are still sensitive to temperature although to a much lesser extent Primarily these dependencies are in the leakage current and offset voltage of the input To minimize these effects the microprocessor firmware compensates for drift by using a series of constants that represent the characteristics of the electrometer These constants are determined by a test procedure performed on each electrometer that calculates these constants These values are entered into the RSS 131 non volatile memory Statistical Response The statistics of the measurement is one area that can be overlooked but is very important to the determination of changes in dose rate Basically any radiation measurement has 16 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R statistical variation associated with the measurement due to the random nature of the gamma photons being measured The more noise in the measurement the longer one must average the signal for a given confidence level To illustrate the point the following graph shows data taken from the HPIC and a cylindrical GM counter The calibration of each of these detectors may be the same but the amount of time required to achieve a given statistical accuracy is quite different In this example the field increased from 8 uR h to 15 uR h but with the GM output it is much less clear what actually happened during this period HPIC and GM Data
86. e last saved COM port value Copyright O 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R This page intentionally left blank Copyright 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R CAUTION WARNING STATEMENTS THROUGHOUT THIS MANUAL WHEN NECESSARY NOTES ARE USED TO IDENTIFY CONSIDERATIONS CAUTION IDENTIFIES INFORMATION ABOUT PRACTICES OR CIRCUMSTANCES THAT CAN LEAD TO PERSONAL INJURY OR DEATH PROPERTY DAMAGE OR ECONOMIC LOSS CAUTIONS HELP YOU IDENTIFY A HAZARD AVOID A HAZARD AND RECOGNIZE THE CONSEQUENCES IF THIS EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER THE PROTECTION PROVIDED BY THE DESIGN OF THIS EQUIPMENT MAY BE IMPAIRED NO OPERATOR SERVICABLE PARTS THIS INSTRUMENT SHALL BE SERVICED BY QUALIFIED PERSONNEL ONLY THIS INSTRUMENT IS MAINTENANCE FREE ALTHOUGH THE END USER S QUALITY PROGRAM MAY DICTATE A RECALIBRATION INTERVAL THIS ENCLOSURE MAY CONTAIN ONE SEALED LEAD ACID BATTERY THIS ENCLOSURE CONTAINS A PRESSURE VESSEL MEETING THE REQUIREMENTS OF 97 23 EC WHEN SERVICING THE UNIT BY QUALIFIED APPROVED PERSONNEL ENSURE THAT POWER IS OFF BEFORE OPENING THE CASE FAILURE TO DO SO WILL RESULT IN 400V APPLIED TO THE OUTSIDE OF THE CHAMBER AND MAY RESULT IN SHOCK MISHANDLING MAY BURST THE CHAMBER AND RESULT IN INJURY OR DEATH THE SENSOR ENCLOSURE MAY ONLY BE OPENED BY CUTTIN
87. e that all data in the buffers will be deleted If this is not done the unit will transmit data differently from the old units Detailed steps to configure RSS 131 data buffers to act like older units First configure the unit for 300 or 500 data points depending on how the unit is to operate Sensor Configuration Ca Ax Pressure Bias Volts Batt Volts Recording interval sec 60 Buffer size am Conversion factor Alarm Low 0 000003 2 5e 8 Alarm High 0 00005 Amps Unit Dose Rate Unit Conversion Factor f 0 41 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Next be sure to transfer the new settings to the RSS 131 RSS 131 Configuration Utility File PC Configuration SANS Graph Time Version Uptime Modem Help Sensor Data A D Data Current Data Clear Data Queues Upload Sensor Data from RSS 131 Get Dose Upload Configuration from RSS 131 Download Configuration to RSS 131 Download Firmware to RSS 131 Verify Firmware to RSS 131 Reset RSS 131 42 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R At this point the RSS 131 is still using its original data buffers The unit must be reset with a special command to resize the data buffers This is done by selecting the option shown below NOTE Selecting any option other than the one shown below will
88. e to the check source is proportional to the sensitivity of the sensor Any change in this indication is evidence of a change in calibration To perform this check an average value for background should first be computed This can be done by averaging for about 5 minutes Note this value and place the check source in a reproducible location in the center of the chamber Again average the readings for about 2 minutes and note this value By subtracting the background from the check source value you will obtain the increase due to the source It is this value that should be constant if the calibration does not change If carefully performed this method should be reproducible to within about 1 164 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sensor Calibration Procedure Scope The following procedure is for calibration of the RSS 131 sensor in the low range and adjusting the RAC parameter of the system if required This procedure employs a shadow shield method using a Cs137 or Co60 source It includes instructions for averaging readings made at different field strengths calculating instrument sensitivity in millivolts per micro roentgen per hour and converting that figure to sensitivity to a Ra226 spectrum A procedure is included for adjusting the RAC parameter of the system if required to bring the instrument into specified tolerance The number of measurements taken and the distances
89. ectric Company All rights reserved RSS 131 OM User s Manual Rev R Take Measurements A Connect an analog output cable to the RSS 131 1 0 connector This cable should use only pin 1 HPIC output signal and pin 8 ground This cable should be connected to a data collection system which will be used to average recorded data over the sampling period Position the sensor a distance D from the source This distance will change throughout the test Recommended distances for this procedure are 10 12 14 16 and 18 feet If these distances are used the sensor should be positioned 10 feet from the source for the first test Apply power to the sensor and turn it on Remove the shield so the source is not obstructed from the sensor see Figure 13 Allow signal to stabilize approximately 1 minute then start recording data to the data collection system Record for a time period sufficient to obtain a stable reading Stop recording to the data collection system Move the shield into place between source and ion chamber Shield centerline must be on a line from chamber centerline to source The shield must be placed between the source and sensor so that it completely shields the detector from the source See Figure 14 Allow reading to stabilize and record to the data collection system for a time period sufficient to obtain a stable reading Repeat steps D through G with additional desired distances NOTE Always keep the source and
90. ed If 0 all alarms for the specified sensor will be disabled See Table 5 for specific parameters corresponding to individual sensors High alarm limit Yes This is the high value at which an alarm is generated If 0 all alarms for the specified sensor will be disabled See Table 5 for specific parameters corresponding to individual sensors Alarm dial out No This is the phone number which will be dialed in phone number set the event any configured alarm is generated If this is blank no message will be sent to any outside systems Table 2 RSS 131 Alarm Requirements 19 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R When an alarm condition is detected the RSS 131 checks to see if a phone number has been specified If the phone number is blank no alarm will be generated If the phone number has been specified the RSS 131 will attempt to dial the phone number specified Assuming a computer with modem is attached to the phone number specified the RSS 131 will send a message indicating which unit generated the alarm and the alarm value A typical message would look as follows Unit O Alarm Radn value 0512 If the RSS 131 is unable to deliver the alarm message the RSS 131 will attempt to redial three times After three redial failures a total of four attempts the RSS 131 will quit attempting to deliver the alarm Whether the alarm message is delivered to a remote
91. eing transmitted from the RSS 131 there will be no noticeable difference in response However if larger blocks of data such as the entire contents of a data queue are being sent on multiple serial ports the higher numbered ports will pause while the lower numbered ports take priority 21 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Serial Command Summary The serial protocol allows users to read and write configuration parameters read data from the circular queues and troubleshoot the machine Fields within the commands are separated by spaces for readability purposes Commands are case insensitive so they may be entered as either upper or lower case The device address ranges from 0 to 99 0 is the default and may be entered as either one or two digits if the ID is less than 10 All commonly used serial commands are listed in Table 3 Additional diagnostic and configuration commands are listed in the Appendix All serial messages start with Data bytes that are italicized in the sections following the table represent variables that should be substituted with user parameters All data is eight bit ASCII so it may be easily entered from a standard terminal program such as HyperTerminal Each command must be terminated by a carriage return lt CR gt If a user makes a mistake it can be deleted using the backspace key ASCII 0x08 The unit ID that is common in the serial protocol provi
92. equivalent standard Overall this difference is not great and in most applications it is not considered One reason for this is that to apply a correction requires one to know the energy of the incident photons If this is known a correction factor can be applied This factor referred to as the F factor is the correction to be applied to compensate for the non ideal nature of the response Since each isotope has a different response the calibration of the detector must be referenced to a known isotope and for this sensor the reference is Ra226 13 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Determining the F factors The first task is to calculate the normalized response for the isotopes If the isotope emits only one energy this would be a matter of finding the response value on the Y axis for the energy of the photons For most isotopes however it is not so simple since they have more than one energy line Each energy and the percentage of that energy to the total must be considered The factors for the most common elements are shown in the following table 0 91 1 19 0 9 Kr 88 0 19 2 4 0 92 OM oss zeus 111 Figure 4 F factors for common isotopes These values can be used to provide a correction factor if the source of the gamma field is known Since the detector is calibrated with respect to Ra2 6 this correction is the ratio of the measured isotope to the Ra22
93. evices share a connector with the rain gauge and would alter the pinout of the cable 127 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Tipping Bucket Rain Wind Sensor Cable Assembly RS Part S131 TBWS 001 Young Wind Monitor JR Model 05103 RS Part MET1 9 O O O O WS SIG red WD SIG grn WD EXC wht Switchcraft Connector EN3C7F WD REF blk RS Part CN7 12 Wind Speed Alt Young 52203 Tipping Bucket Rain Gauge RS Part MET1 6 Wind Speed Wind Direction Wind Direction Reference od Qe Rain Gauge Input BO Jt Gnd ors 2 Gnd Note Wire should be stripped back and tinned 128 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Analog Cable for External lO Connector P6 1 HPIC Out white Wires are left as tinned flying leads All wire is 24 gauge 2 Digital Out 2 red 3 Digital Out 3 green 4 Unused brown P6 Switchcraft EN3C8F 5 Alarm V blue 6 Digital Out 1 orange 7 Alarm ground yellow 8 ground black Analog outputs on this connector are not calibrated and not temperature compensated Digital Out 1 and Digital Out 2 indicate the electrometer range as follows Digital Out 1 Digital Out 2 Range 0 0 Low 1 0 Mid Sensitivity invalid 0 1 Hig
94. g the parameters Parameter Name Gain Zero Range Al A2 B1 B2 Low RLV RLN ZLD ZLN Mid RMV RMN ZMD ZMN High RHV RHN ZHD ZHN A D Converter The A D convert has 2 parameters associated with the data conversion First is the resistor divider ratio which scales the voltage from the electrometer before input to the A D This parameter for the Electrometer input is named AD4 and has a nominal value 2 5 which is the inverse of the resister divider ratio The second constant is the full scale A D value named ADR which nominally is 4 095 the voltage that corresponds to a digital output of 4095 from the A D 147 Copyright 2006 General Electric Company All rights reserved Analog Output RSS 131 OM User s Manual Rev R Introduction As an option the analog output from the RSS 131 can be used for input to external analog input devices This option is available by using the optional analog output cable This output actually consists of three signals the analog output and 2 range digital range bits which indicate the current range of the unit It is important to understand that the analog output is not calibrated and not temperature compensated In previous Reuter Stokes products such as the RSS 120 the analog output sensitivity was always 20mV uR h This allowed for the interchange of sensors without any changes to the monitoring system The philosophy of the RSS 131 is somewhat diffe
95. g w 40 charocierstona __ String startup May be up to 40 characters long A A APS Baud rate for COM4 300 600 1200 2400 9600 4800 9600 19200 Effective Midi immediately COM4 baud rate Parity for COM4 E 0 N Effective EON N immediately Setting parity to E or O automatically sets data bits to 7 Setting parity to N automatically sets data bits to 8 COM4 Parity C3l C4B CAP O W TU COM4 Handshaking C4H RTS CTS Handshaking Effective 0 1 immediately or gt 1 0 No handshaking 1 RTS CTS gt 1 Specifies delay after RTS before transmitting mSec O T Alarm Dial E Alarm Phone Number Phone number used to dial a remote site in case of an alarm If this field has a length of O characters no remote site will be called in the event of an alarm This field may contain up to 14 characters The phone number can be reset by entering a value of N in versions 1 61 and later Previous versions required all parameters be reset to clear this value Display RSS 131 Serial Port XDP This parameter specifies which serial port 0 4 on the RSS 131 is connected to the external serial display Valid values are 0 No external display 1 COM1 2 COM2 4 COM4 32 Copyright O 2006 General Electric Company All rights reserved ll O Zz RSS 131 OM User s Manual Rev R Variable Three Description Range Default Digit ID einemaimodemsdesaediocoms the internal modem is dedicated to COM3 D
96. gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding n the ID of which queue is to be read 0 Wind speed T Auxiliary Input 2 Barometric Pressure psia 3 Wind direction 4 HPIC Output mR h by default but other units possible 5 Bias Voltage V 6 Battery voltage V 7 Temperature C 8 Rain gauge 9 Electrometer zero Units depend on conversion factor for the sensor ssss Start date for which queue data is to be returned This must be entered in the form mm dd yy tttt Start time within start date for which queue data is to be returned This must be entered in the form hh mm ss Literal separator between start and end times 35 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R eeee End time at which queue data is no longer to be returned This must be entered in the form mm dd yy uuuu End time within end date for which queue data is to be returned This must be entered in the form hh mm ss RESPONSE All data from the specified queue in the time interval specified will be returned The first line will show the recording interval The second line will show the date and tie of the first data point Subsequent lines will display up to 10 data points So long as the duration between points matches the recording interval displayed on
97. gt gt Remove programming cable Contact Reuter Stokes Copyright O 2006 General Electric Company All rights reserved 159 RSS 131 OM User s Manual Rev R ona Can t Load New Firmware into RSS 131 ey A Oes progra Is the 131 LEEN load No _ gt functional in No nee ccessfully 7 ormal mode 2 ng Connect programming md cable Yes A Yes No Specify HPIC HEX m Ver string ee 2 160 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Can t change queue size for a sensor Were parameters poe No gt 3 parameters from 131 Set buffer size rotal numbe of buffer points lt 20 000 Adjust queue sizes No until total is lt 20 000 Yes E Download configuration to 131 Reset 131 while preserving number of data points 161 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R No Sensor Data Retrieved from 131 Is version string retrieved 2 Ver No Str Yes Set time on 131 No and allow time to record data Is 131 time correct Yes Enlarge time No window for data retrieval larger than recording interval 2
98. guration file by Reuter Stokes must be reloaded in the unit Preserve number of data points for each All parameters except data queue sizes and sensor and electrometer settings Reset all electrometer settings are set to default other parameters to default values values Any data in the queues will be deleted This option is intended to allow the user to change data queue size and restart the unit Figure 11 Reset Conditions 83 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Graph Menu The Configuration Utility supports graphing of real time data as well as CSV Comma Separated Value files CSV files are generated when the Online Upload Sensor Data option is executed These files are also compatible with Microsoft Excel A E RSS 131 Configuration Utility LE File PC Configuration Online Graph Modem Utils Help CSV File Real Time Data COM3 9600 N 8 1 No modem CSV File This option allows the user to graph data which was previously uploaded from the RSS 131 and saved to a file The user is first prompted to specify which file is to be graphed This file must contain date and time stamps in the first column with data in the second column F amp Open J gt Computer gt Windows C gt HPIC Data Organize New folder al O 1 Computer 2 Name Date modified amp Windows C M admig 4 Unspecified 1 JL HPIC D
99. h Sensitivity invalid 1 1 Zero 129 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Serial Cable to connect Modem COM3 to RJ 11 Jack Switchcraft 4 pin connector Female connector on cable RJ 11 Connector Switchcraft Part ENC4F TIP TIP 4 RING RING 2 NC 3 NC 4 130 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Power Cable with Charger Connects External Power to Charger Switchcraft Part EN3C6F Vbat y GND 2 NC 3 Charger 4 g Charger 5 g A Chassis Ground 131 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Cable to connect external 6 to 8 V power supply to External Power connector on RSS 131 Switchcraft Part EN3C6F RS CN7 11 Vbat 1 To power supply GND 2 To ground on power supply NC 3 ji NC 2 conductor 22 ga cable should be used Alpha part number NC 5610B2001 5 NC Flying leads should be stripped of 6 insulation 0 5 inches and tinned 132 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Internal Wiring Diagrams Internal Pressure Sensor Cable Data Board J7 Connector Setra Pressure Sensor 1 Vbat EXC 2 Press OUT 3 Gnd OUT 4 NC
100. he RSS 131 until the RSS 131 is restarted Low alarm value 0 to disable High alarm value 0 to disable Converts sensor input to engineering units Only used for HPIC Rain and Wind Speed This is used only on for radiation HPIC When radiation data is displayed on the Online Sensor Data the value displayed in the radiation value in uR hr multiplied by this value This is used only for the pressure sensor There are two supported pressure sensors 600 1100 hPa mbar and 800 1100 hPa mbar Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sensor Overview This window provides a quick way to configure buffer size and recording interval for all sensors without having to change between tabs As always if buffer sizes are changed the unit must be reset for these changes to take effect refer to Reset RSS 131 on page 83 a 5 Sensor Snapshot pr Buffer Size points Rec Interval secs Wind Speed Aux Input Pressure Wind Dir HPIC Bias Voltage Battery Temperature Rain Total 7 Adddddddds e III Alarm Dial In the event of an alarm condition a phone number can be dial This is only available on units with phone modems To disable alarm dial enter blank phone number 68 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The Alarm Dial dialog box functions are Phone Number Phone number
101. he display is placed at a great distance from the RSS 131 it is the customer s responsibility to provide the wiring between the display and the RS 232 RS 485 converter that is provided as part of the kit from Reuter Stokes All external displays require configuration through the Configuration Utility This is detailed below and is common regardless of display type As always once the changes are made in the Configuration Utility they must also be downloaded to the RSS 131 The displays show only radiation values Other sensors such as barometric pressure wind speed etc are not shown The RSS 131 must be configured to show data on the display This will be shown in this section All of the display kits require AC power for the display The serial cables which are part of the display kits can be used on COM1 COM2 or COM4 on the RSS 131 176 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Software Configuration The RSS 131 does not display radiation to the external display as it is shipped from the factory It must be configured via the RSS 131 Configuration Utility The RSS 131 serial port used must be selected from the General Unit Configuration window as shown in Figure 15 The port used must be selected in the External Display Port frame General Unit Configuration Unit Address fo Time Format e mmddyy dd mm yy Radiation Label mR hr uSv hr M 100ms W
102. he input to channel 4 of the A D converter This value is the inverse of the voltage divider network on the input to channel 5 of the A D converter multiplied by the gain of the op amp 100 This value is the inverse of the voltage divider network on the input to channel 6 of the A D converter AD7 This value is the inverse of the voltage 29 N o WN O NO be Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Variable Three Description Range Default Digit multiplier divider network on the input to channel 7 of the A D converter Electrometer Zero These values are unique to each RSS 131 and are determined during calibration They can be found on the calibration certificate provided by the factory Electrometer low range zero Electrometer middle range zero Electrometer high range zero ID Electrometer voltage measured in low range zero state at 25 C Electrometer voltage measured in middle ne range zero state at 25 C Electrometer voltage measured in high UN range zero at 25 C Electrometer low ZLD Variation in electrometer voltage range zero variation measured in low range zero state Value sd entered in V C Electrometer middle ZMD Variation in electrometer voltage range zero variation s measured in middle range zero state a Value entered in V C Electrometer high ZHD Variation in electrometer voltage range zero variation measured in high
103. he response up through the last character before the checksum CRC field The low order byte of the longword result of this addition is converted into a two character string the checksum value by OR ing the low order nibble with 60 hex and placing the result in the second character position then OR ing the high order nibble with 60 hex and placing the result in the first character position The CRC is calculated by XOR ng the ASCII values of all the characters in the given string The low order byte of the longword result is converted into a two character string the CRC value by OR ing the low order nibble with 60 hex and placing the result in the second character position then OR ing the high order nibble with 60 hex and placing the result in the first character position 23 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Configuration Commands Configuration commands are used to change settings in the RSS 131 Command Syntax All configuration requests use the P command followed by the address and parameter designator To view a parameter setting the last parameter is omitted The format of the command is HP yy ppp dddd lt CR gt yy the HPIC ID This is a one byte value that ranges from 0 to Z ASCII excluding ppp configuration parameter specified as outlined in the following table dddd A variable length field specifying the value to
104. icates the exposure rate at one meter on a specific date This exposure rate must be corrected for the decay of the source from date of certification to the date of the calibration run as follows Kd e 0 693 t T where Ka the coefficient of decay e natural logarithm base t time between the date of source certification and calibration T the half life of the source 5 26 years for Coft NOTE The values of t and T must both be expressed in the same unit of time such as days or years G To calculate Exposure Rate E at the various distances D used 2 H D 100 Le 100 E E 10 e D Where E10 exposure rate produced by gamma source at a distance of 1 meter as indicated on the source certificate the linear attenuation factor for air is 6 8 x 105cm D distance in cm between the center of the source and center of the ion chamber Ka the decay coefficient evaluated in Paragraph F H k Co or Cs137 the value of mVp divided by the Exposure Rate for the source to ion chamber distance being used l k the average value of k J o the standard deviation 169 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Ek ng n 1 OR n Ek k n n 1 where n number of measurements of k typically 5 K V o k should be less than 1 If not the readings show too much variation and may not be valid repeat the readings carefully
105. ied in the RSS 131 must exactly match the PC format specified in the Regional Settings available 78 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R from Control Panel on the PC If these are not matched an incorrect possibly invalid date will be set in the RSS 131 Also the RSS 131 does not support a as the separator between month day and year so a must be specified in the PC Regional Settings as the date separator 79 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Upload Configuration This will cause all configuration parameters to be uploaded from the RSS 131 to the Configuration Utility As parameters are retrieved from the RSS 131 they are displayed on the first pane of the status bar located on the lower portion of the main window Parameters are uploaded from the RSS 131 automatically when the RSS131 Configuration Utility starts After uploading the configuration all configuration options will show the existing values when screens are selected E Retrieving Parameters from RSS 1 Download Configuration This option downloads all configuration parameters as they exist in the Configuration Utility to the RSS 131 This must be done with great care If parameters are not uploaded from the RSS 131 prior to changing configuration parameters and then downloading parameters to the RSS 131 the unit may not fun
106. igh It changes between these ranges based on the radiation detected The high pressure ion chamber HPIC is a highly sensitive and stable detector for gamma radiation Gamma ray photons travel through the Argon gas ionizing the gas and generating current A high voltage supply biases the detector cathode sweeping the ions out of the gas and generating the current which is measured by the electrometer and converted to an output voltage The data acquisition board gathers data from seven internal inputs and supported external sensors The data for these inputs is stored in circular queues for later retrieval Once the buffer is full the oldest data point is deleted while the newest data point is added Individual buffers may be customized to meet individual customer needs The sampling interval for each input is configurable with a resolution of one second Each input is sampled every second but the queue is updated only at the frequency specified in the configuration parameters All data is recorded to the queue as an average value calculated over the recording interval For example if the board is configured to record a sensor every five minutes it will read the sensor every second for five minutes Once the five minutes expire the resulting average value will be written to the data queue If an interval of O seconds is entered recording for this sensor will be disabled The board supports up to 20 000 total points in the data queues The num
107. in dialog box functions are shown below Sensitivity Effectively this is the nominal feedback resistor values at 25 C for each of the 3 ranges Temperature Drift Temperature drift of the resistors in ppm C fr E Electrometer r Offset 250 m Offset Drift Deg C Low Mid High fo The Electrometer Zero dialog box functions are Offset The electrometer zero values at 25 C for each of the 3 ranges Offset Drift Zero drift of the zero in Volts C 66 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Sensor Configuration Each sensor in the system has a tabbed dialog box All sensors have a recording interval buffer size and alarm settings HPIC rain and wind speed also have conversion factors Rain amp Sensor Configurati Ce X Temperature Aux A D Bias Volts Batt Volts Pressure Wind Speed Wind Dir Buffer size 5000 Recording interval sec 60 Alarm Low 0 000003 Alarm High 0 00005 Unit Conversion Factor 1 0 Conversion factor 2 5e 8 Amps Unit Dose The Sensor Configuration dialog box functions are Recording Interval Buffer Size Alarm Low Alarm High Conversion Factor Unit Factor Range Conversion 67 Number of seconds between recording data to the buffer Number of points allocated to the sensor buffer this does not take effect on t
108. in version 6 0 The parameter takes the form x where x can be any number between 1 and 9 inclusive If specified this causes the program to use COMx on the PC thereby overriding the last saved COM port value This is useful on newer machines that use USB to serial adapters to provide serial ports For example 4 would instruct the program to use the PC COM4 port The complete shortcut would look as follows in this case C Program Files x86 RSS131 Configuration Utility RSS131Config exe 4 58 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS 131 Configurati File PC Configuration Online Graph Modem Utils Help The File menu functions are Default Configuration Read Save Save As Exit 59 COM3 9600 N 8 1 No modern Create a new configuration All parameters are set to their default values Read a configuration file previously stored using the Save function Save the current unit configuration to a file Save the current unit configuration to a file under a new name Exit the program Copyright 2006 General Electric Company All rights reserved PC Menu RSS 131 OM User s Manual Rev R The PC menu is where PC communication parameters are configured as well as which COM port on the RSS 131 is connected to the PC Each of these parameters is critical to successful communications The PC port specified must match the
109. ine ignoring decimal points and spaces This feature insures detection of data transmission errors M1 Command Reset Memory Buffers The M1 command format is identical to the MO command but will reset the data buffer The response to this command is MY lt CR gt lt LF gt This command is important since the data buffer must be cleared after data has been received in the older units 50 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R S Commands The S command requests sensor data The remote station converts the sensor data to engineering units The response format is SYNSSSSS lt CR gt lt LF gt S Command Y Unit Address N Secondary Command Number SSSSS Data with a Floating Decimal Point lt CR gt Carriage Return lt LF gt Line Feed The following table briefly references each of these commands and the following sections detail their function of each DATA TRANSMITTED IN RESPONSE TO AN S COMMAND SECONDARY DATA COMMAND TRANSMITTED NEW RADIATION DATA WITH RESET LAST RADIATION DATA INTEGRATION TIME 8 NEW RADIATION DATA NO RESET 0 New Radiation Data The transmitted sensor data is the average since the last 0 command If data requests are made at 5 minute intervals the data will be a 5 minute average If data is requested at 1 minute intervals the data will be a 1 minute average A decimal point will be located in the five
110. inning at the Start Date and Start Time specified Real time data will be appended to this historical data Fr amp Start date and time Start date 1 27 2014 Starttime 14 45 28 Sensor C Wind Speed Bias Voltage C Aux A D C Battery Voltage C Barometric Pressure Temperature C Wind Direction C Rain Radiation NOTE The RSS 131 supports mm dd yy dd mm yy and yy mm dd formats The format specified in the RSS 131 must exactly match the PC format specified in the Regional Settings available from Control Panel on the PC If these are not matched an incorrect possibly invalid date will be set in the RSS 131 Also the RSS 131 does not support a as the separator between month day and year so a must be specified in the PC Regional Settings as the date separator 86 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The graph looks very similar to the one shown when graphing CSV data The graph title indicates what is being measured radiation battery etc and units Radiation may be displayed in uR hr or nSv hr The label displayed depends on the selection made in the Config General window A sample graph is shown below File Edit Tools View Gallery Help e Mm e S LEE RK ACH ane A ROON Res ar ido Beja ura Saat Radiation in mR hr i 91 27 2014 3 38 30 PIVD1 27 2014 3 45 30 PN21 27 2014 3 47 44 PN91 27 2014 3 48 14 PI
111. ion progress Percent complete 17 i Cancel i 7 Once the validation process is complete remove the programming cable from the RSS 131 When the cable is removed the RSS 131 will reset itself and begin executing the firmware that was just programmed At this point all parameters have been reset to default values The user must now reload the parameters that are specific to the unit just programmed 104 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 8 Read the configuration file that contains parameters for this unit by selecting File Read from the menu Organize v New folder 4 Nk Computer 4 amp Windows C JL admig J HPIC Data J Logs JL MSOCache JL New folder PerfLogs gt L Program Files gt Program Files x86 gt ProgramData HPIC Data L Logs MSOCache New folder Perflogs L Program Files h Program Files x86 ProgramData A B Drniarte Projects lt a File name RSS 131 cfg v Cfg Files cfg 9 Select the configuration file and click on the Open command button This will read the parameters into PC memory 10 The parameters must now be downloaded to the RSS 131 This is done by selecting Online Download Configuration to RSS 131 11 The RSS 131 is now running with all parameters correctly set 105 Copyright O 2006 General Electric Company All rights reserved RSS 13
112. isplay units This parameter specifies whether radiation will be displayed in R hr or Sv hr The display will automatically scale the output so it will be in mR hr uR hr etc Valid values are 0 R hr 1 Sv hr Table 5 Configurable Parameters 33 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Data Commands These commands are used to access RSS 131 data Clear Data Queue C This command will clear one or all data queues COMMAND HC yy x lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding x one digit ID specifying which queue is to be cleared 0 Wind speed 6 Battery T Auxiliary Input 7 Temperature 2 Barometric Pressure 8 Rain 3 Wind direction 4 HPIC Output 5 400V a Clear all queues RESPONSE The HPIC will return Queue cleared EXAMPLES C 1 7 lt CR gt C 1 a lt CR gt to clear all data from temperature queue to clear all data from all queues 34 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Display Queue Data 0 This command will display all queue data for the specified device between the specified start and end dates If the start date is specified with no start time and no end date time all data points from midnight of the start date until the current time will
113. ission to a central computer upon request Unlike previous generations of sensors buffer data is not deleted once it is sent to the central computer This allows multiple devices to request data from the same RSS 131 without concern that another requesting device has erased the memory buffer The RSS 131 provides its output via a number of RS 232 ports Users can request data configure the system and update the program s firmware through these ports All units contain 3 standard serial interfaces COM1 COM2 and COM4 which can be used for simultaneous access to the communications commands There is an optional internal modem that uses COM3 if installed If the internal modem is not installed COM3 is unused An optional barometric pressure sensor may be installed inside the unit External sensors such as tipping rain bucket and wind speed and direction may also be added External modems may also be connected to COM2 and COM4 if desired 3 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Electrometer APIE Data Buffers The electrometer provides an analog voltage proportional to exposure rate The electrometer is directly mounted to the ion chamber to minimize noise It is connected to the micro controller by a cable that supplies power to the electrometer and sends the voltage output to an A D converter on the processor board The electrometer consists of three ranges low middle and h
114. mands The M command is used to transmit data from the buffer and clear it once data has been transmitted The MO command transmits data and M1 clears the buffer To send either MO or M1 the following format is used MY lt CR gt lt LF gt MO Command Send Buffered Data The MO command transmits the entire data buffer maximum 500 points to the interrogating device The response format is 00125 00015 0000 0000 06 80 00 00 00 00 00028 lt CR gt 0125 0122 0136 0142 0137 0129 0130 0131 0131 0127 00077 lt CR gt 0127 0126 0132 0131 0140 0135 0130 0122 0122 0127 00068 lt CR gt 49 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R The length to this response depends upon how many data points the buffer contains Once all data points in the buffer are filled each new data point pushes out the oldest data point thereby maintaining the most current 500 data points assuming the buffer is configured correctly see description above The first line of the response contains the number of data points to be transmitted followed by the averaging time in seconds per point The 0000 is the unit status 6 80 will be the current battery voltage The next numbers are always 00 00 The remaining lines are the data transmitted ten numbers per line until all data has been transmitted The check sum at the end of each line is equal to the addition of all numbers in that l
115. mats on the PC and RSS 131 match exactly refer to Detailed Date Format Examples above for details e There may be no data recorded in the unit Allow time for at least two values to be recorded based on the sensor settings e The RSS 131 may not be communicating with the PC refer to No Communications with RSS 131 below for details 155 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R No Communications with RSS 131 Communication parameters must match exactly between the PC and RSS 131 The PC settings are modified using the PC Serial Config menu option The PC settings should match the current settings of the RSS 131 Serial Setun MS PC COM Port PC Baud rate 131 COM Port COM1 300 C 4800 C COM1 C COM2 C 600 9600 e COM2 C COM3 C 1200 19200 C COM3 C COM4 C 2400 38400 C COM4 Cancel 156 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Communications Fail Partway Through Parameter Download Another critical consideration on the PC Serial Config window is selection of the RSS 131 COM port that is physically connected to the PC Communication parameters for the RSS 131 COM port are changed on the Configuration Communications window Serial Setup PC COM Port PC Baud rate PC Parity 131 COM Port e COM1 C 300 C 4800 None C COMI C COM2 C 600 9600 C Even COM2 C COM3 C 1200 19200 Odd C COM3
116. network 5 RXD Received data line for COM1 6 CH3 Input to A D channel 3 This is the wind direction sensor after it passes through a divider network 7 HPIC_OUT Output of the electrometer after it passes through a divider network It is also available on P6 pin 1 8 VBAT Battery voltage after passing through a fuse 9 WIND_SPEED_ALT Wind speed ALT signal 10 DIGITAL_OUT2 Optically isolated output controlled by serial commands Also available on P6 pin 2 11 TXD Transmit data line for COM1 12 VBATT Battery voltage direct from the battery 13 PF PF signal on DS2251T micro controller module 14 NC No connection 15 SPI_MISO SPI Master In Slave Out signal from devices to DS2251T 16 VCC 5V regulated voltage 17 NC No connection 18 SPI_CLK SPI Clock signal 19 SPI_MOSI SPI Master Out Slave In signal from DS2251T to devices 20 12V 12V regulated voltage 21 CHO Input to A D channel O with nodivider network Channel 0 is not used in the system 22 DIGITAL_OUT3 Optically isolated output controlled by serial commands Also available 141 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R on P6 pin 3 25 PROG PROG pin on DS2251T used to place micro controller in bootstrap programming mode 24 CH6 Input to A D channel 6 This is the battery voltage output after it passes through a divider network 25 CH7 Input t
117. ning barometric pressure The pressure sensor has a range of 600 to 1100 mBar The output of the sensor is between 1V for 600 mBar and 5 1V for 1100 mBar This sensor is located inside the enclosure and connects to the board on J7 The values recorded in the data queue are in psia The voltage from the sensor first passes through a resistive divider network This must be accounted for in the calculation The equation that converts voltage output by the sensor to psia is shown here for reference Vsensor VA o 3 account for 1 3 divider network Millibar Vsensor 1 60 600 account for output voltage Psia Millibar 014504 conversion factor 53 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Modem The RSS 131 supports an optional 33 600 baud modem operating as COM3 This modem is initialized in auto answer mode with 8 data bits 1 stop bit and no parity The modem will always answer incoming calls The board may also be configured to dial a remote phone if an alarm is generated See Table 5 for details If the modem is not installed COM3 is not used The modem does not echo characters as they are entered If the user wants to see characters as they are typed it is his responsibility to put the modem on the remote computer in half duplex mode 54 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R External O
118. none cnn cone eneeneenene 179 RS 485 Marquee Display S 131 ESD 003 LL cono c no nono nono nnnonn nono oran anar enana nn creci ne cn neon ncon nono 181 MOUNTING AND INSTALLATION REQUIREMENTS sessensnnnnnenenenenenennenerenenenneses 183 ix Copyright O 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R List of Figures Figure 1 Micr controller BIOGK Did AM oia ias 8 Figure 2 PIEDRA Mi A as 12 Fig re 3 HPIC Energy RESPONSE ES 13 Fig re F factors for COMMON boo S ne Re ER dia 14 Fig re 5 Corr ction FAClORS nier ren a oe lit 14 Figure 6 SAtUrATION CURVES rene Mn nm EE EAE AET Ar E EAE E E EEA TEA 15 Figur 7 Dir ctional RE pO Serrat ae e E Eae E EAE RR E Ah n 18 Figure 8 RSS 131 Configuration Utility Welcome Dialog BOX ss 57 Figure 9 RSS 131 Configuration Utility Installation Location 57 Figure 10 RSS 131 Configuration Utility Program Group sise 58 PIQUE RESCHICOMGILIGINS re RS E tan en einen eaten nt int 83 Figure 12 HPIC Dimensions Relative to Center of lon Chamber 166 Figure 13 Calibration Setup With No Shield ss 167 Figure 149 HPIC Calibration With Shield a netted etn nti sate a a Ent 168 Figure 15 External Display COM Port Selecciona i n 177 Figure T6 External Display COM Settings an 178 Figure 17 S 131 ESD 001 RS 232 1 x 10 20 Display System ss 180 Figure 18 S 131 ESD 003 RS 485 Serial Display System seen 182 x Copyright 20
119. nterval Rain tip alarm level low Rain tip alarm level high Input Configuration A D Channel 0 multiplier A D Channel 1 multiplier A D Channel 2 multiplier A D Channel 3 multiplier A D Channel 4 multiplier A D Channel 5 multiplier A D Channel 6 multiplier A D Channel 7 RSS 131 OM User s Manual Rev R Three Description Range Default Digit AAA RTV RPT Number of temperature points in queue 0 5000 Seconds between temperature points If this parameter is set to 0 no data will be gathered for this sensor Changing this parameter will delete all points in the queue before changing the point interval l Any sensor value that is lower than this value will trigger an alarm condition A value of 0 0 will disable this feature Any sensor value that is higher than this value will trigger an alarm condition A value of 0 0 will disable this feature ADO This value is the inverse of the voltage divider network on the input to channel 0 of the A D converter This is not used for channel 0 This value is the inverse of the voltage divider network on the input to channel 1 of the A D converter This is not used for channel 1 This value is the inverse of the voltage divider network on the input to channel 2 of the A D converter This value is the inverse of the voltage divider network on the input to channel 3 of the A D converter This value is the inverse of the voltage divider network on t
120. o defaults 2 All parameters are left intact Data queues reallocated data destroyed RESPONSE The software version string will be displayed out the configuration port EXAMPLES 100 to restart the data board while keeping data intact Y01 to restart the data board and reinitialize all data and parameters Y02 to restart the data board and reallocate data queues All parameters are left intact For versions gt 2 0 the following are required Y 0 0 12345 to restart the data board while keeping data intact Y 0 1 12345 to restart the data board and reinitialize all data and parameters Y 0212345 to restart the data board and reallocate data queues All parameters are left intact 119 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Interconnecting Cable Pin outs S131 232 001 Serial Cable to connect Data Acquisition Board COM 1 to PC DB 9 Not for Programming Device Switchcraft 4 pin connector Female connector on cable DB 9 on PC Switchcraft Part ENC4F Female connector on cable TxD RxD 7 1 2 RxD TxD 2 3 PROG 3 GND GND 4 5 RTS 7 CTS 8 E 120 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Programming Cable to connect Data Acquisition Board to PC Switchcraft 4 pin connector Female connector on cable Switchcraft Part ENC4F DB 9 on PC Female connector on
121. o A D channel 7 This is the temperature output with no divider network 26 BIAS_MON Input to A D channel 5 This is the bias voltage output after it passes through a divider network 27 12V 12V regulated voltage 28 WIND_SPEED_PULSE Wind speed pulses received from wind sensor 29 DIGITAL_OUT1 Optically isolated output controlled by serial commands Also available on P6 pin 6 30 AUX1 Not used 31 ELECT_IN Direct input to DAQ board from electrometer with no divider network 32 NC No connection 33 GND Ground 34 GND Ground 142 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Temperature Compensation Introduction A critical aspect of accuracy and stability is the instrument sensitivity to changes in environmental conditions particularly that of temperature Since each sub assembly of the RSS 131 is affected in a different way by temperature the best method for minimizing error is to characterize each of the error components and compensate for them Error specific parameters are entered into the microprocessor and used by the firmware to compensate the output of the sensor to temperature changes Since the sensor outputs are generated by the microprocessor the usual analog circuit errors can be completely compensated In the remainder of this section the method used to perform this compensation is described for each sensor sub assembly and the compensation parameters for e
122. oblems arise If any of your telephone equipment is not operating properly you should immediately remove it from your telephone line as it may cause harm to the telephone network If the Telephone Company notes a problem they may temporarily discontinue service When practical they will notify you in advance of this disconnection If advance notice is not feasible you will be notified as soon as possible When you are notified you will be given the opportunity to correct the problem and informed of your right to file a complaint with the FCC Contact your telephone company if you have any questions about your phone line In the event repairs are ever needed on the RSS 131 they should be performed by GE Reuter Stokes or an authorized representative of GE Reuter Stokes For information contact GE Reuter Stokes 1 Copyright 2006 General Electric Company All rights reserved Introduction General Firmware RSS 131 OM User s Manual Rev R This document applies to the following devices e S131 11x 10xxxx 100 mR hr units e S131 11x 20xxxx 10 R hr units e S131 11x ERxxxx 100 R hr units The RSS 131ER is a self contained gamma monitor for measuring gamma exposure rates of 0 to 100 R hr It replaces the earlier RSS 131 units which had ranges of only 100 mR hr or optionally 10 R hr Unless otherwise noted all references in this manual apply to all three versions of the RSS 131 The system consists of 3 primary sub systems e Micro
123. ometer is swapped out Do not perform this operation without factory approval Should it be necessary to perform this operation in the field a separate work instruction will be sent to the user This feature is requires that both the firmware and Configuration Utility be 6 0 or newer Previous versions do not support this feature F 155131 Coniguaton Uy A File PC Configuration Online Graph Modem Help Electrometer Offsets COM3 9600 N 8 1 Direct connect 89 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Configuration Caveats The RSS 131 supports only the following date formats e mm dd yy e dd mm yy e yy mm dd The format specified in the RSS 131 must exactly match the PC format specified in the Regional Settings available from Control Panel on the PC If these are not identical an incorrect possibly invalid date will be sent from the PC to the RSS 131 Depending on which function is being used at the time this may result in an invalid date being set in the RSS 131 lif trying to set date time or no date being sent from the RSS 131 to the PC if uploading or graphing data The RSS 131 does not support a as the separator between month day and year so a must be specified in the PC Regional Settings as the date separator Changing the date format deletes all data stored in the RSS 131 so data should be uploaded from the
124. on alarm level Any sensor value that is higher than this 50e 6 high value will trigger an alarm condition A value of 0 0 will disable this feature Radiation filter This value determines how much 0 coefficient smoothing is applied to radiation readings A larger value results in more data smoothing while a lower value results in 3 less data smoothing Radiation constant This value is determined when the unit is 2 5E 8 calibrated The value is obtained from external calibration equipment at 25 degrees C During normal operation this value is multiplied by the current detected to determine the amount of radiation detected This value is unique to each RSS 131 and is determined during calibration It can be found on the calibration certificate provided by the factory Bias Voltage Saas VPT Number of bias voltage points in queue 1000 5000 27 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Variable Three Description Default Digit Bias voltage interval Seconds between Bias voltage points If 0 this parameter is set to O no data will be 65535 gathered for this sensor Changing this parameter will delete all points in the queue before changing the point interval I Bias voltage alarm Any sensor value that is lower than this 250 0 level low value will trigger an alarm condition A value of 0 0 will disable this feature Bias voltage alarm Any sensor value that is highe
125. ox that appears In this example the file is named RSS 131 cfg Click the Open button once the file is selected Organize New folder 4 iMi Computer 4 amp Windows C J admig HPIC Data Logs MSOCache JL New folder PerfLogs gt Program Files gt Program Files x86 ProgramData HPIC Data h Logs MSOCache New folder Perflogs h Program Files Program Files x86 ProgramData b Drniarte gt Projects 7 lala File name RSS 131 cfg v Cfa Files cfg 3 The file will be read into the Configuration Utility The main window will now show the file name in its menu bar as shown below S rss 131 Ce OS File PC Configuratom nineGrap n Utils Help Ready O O O COM3 9600 N 8 1 Direct connect A 4 Make any desired changes before downloading parameters to the RSS 131 92 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 5 Download the configuration to the RSS 131 This will send all configuration parameters to the RSS 131 E RSS 131 Configuration CARS File PC Configuration Graph Modem Utils Help Time Version Uptime Sensor Data A D Data Current Data Clear Data Queues Upload Sensor Data from RSS 131 Get Dose Upload Configuration from RSS 131 Download Configuration to RSS 131 Download Firmware to RSS 131 Verify Firmware to RSS 131 Rese
126. per right hand corner of the window The range shown on this screen is the electrometer range Valid range values are O low range 1 mid range and 2 high range r Smm O US 74 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Current Data This option allows the user to display in large text the value for one sensor as it is written to the queue in the RSS 131 This means if the recording interval for a sensor is one minute in the RSS 131 this display will also update once per minute Once the sensor is selected the user must click the Get Data command button to start updating the display Clicking the Stop Data command button will stop display updates For radiation data the value displayed is the uR hr received from the RSS131 multiplied by the Unit Conversion Factor from the Configuration Sensors HPIC screen The radiation label displayed is determined by the Configuration General Radiation Label option 01 27 2014 2 49 53 PM Sensor Hero 0 0085 mR h Note Data is updated on this window only when a pointis written to the queue on the RSS 131 E Waiting for data from S11 Me Stop Data Done Clear Data Queues This option allows the user to clear all data from all queues in the RSS 131 Once this is done there will be no historical data remaining in the RSS 131 prompted to make sure this is what is to be done The message
127. play the current calculated value once per second for all sensors followed by a lt CR gt The data sent will be the instantaneous value for each sensor after going through the appropriate conversions These are the values that are summed together and divided by the recording interval to obtain the value that is written to the queue Data will continue to be displayed until any character is received at the COM port The order of sensors in the line is e Wind Speed e Auxiliary Input V e Barometric Pressure psia e Wind Direction e HPIC mR h e High Voltage V e Battery Voltage V e Temperature C e Rain gauge Units depend on conversion factor for the sensor COMMAND HS yy lt CR gt yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding RESPONSE lt CR gt 0000 0000 0000 0000 0085 547 8 5 688 22 40 0000 0000 0000 0000 0000 0082 547 3 5 684 22 40 0000 0000 0000 0000 0000 0086 547 3 5 682 22 40 0000 38 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Set Time and Date T This command allows the user to set or view the time and date If all parameters are specified the time and date are set to the values on the command line If only the first two parameters are specified the user will see the current time and date values displayed NOTE The RSS 131 supports both mm dd yy and dd mm yy d
128. pt 10 24 machine threaded screws or bolts Grounding of the RSS 131 is accomplished at a grounding point on the mounting flange by means of a screw and lockwasher This screw is identified by a grounding symbol sticker with the symbol E In normal operation grounding of the unit is not required Consult local electrical codes or normative references The recommended installation steps are as follows Ensure the RSS 131 is powered off Mount the RSS 131 on the support structure using customer provided hardware Connect desired communication cables E UO RN pP Connect external power cable The RSS 131 power wiring is shown the External Connectors section od Apply power to the unit 6 Monitor data until the unit is operating properly This can be done using the Configuration Utility 73 8 16 UNC 2B 0 5 IN DEEP 88 4 PLACES 88 he 4 PLACES Mounting Flange Dimensions inches 183 Copyright O 2006 General Electric Company All rights reserved
129. ptions Serial Displays The RSS 131 supports external serial displays which support straight ASCII data with no escape sequences These displays are supported only in firmware versions 4 0 and higher The Configuration Utility must be version 3 6 or later The following display kits are supported e S131 ESD 001 1 line by 10 character LED marquee display kit containing o 131 232 003 Serial Display Cable o DSP1 1 1 line by 10 character LED marquee display e S131 ESD 002 1 line by 20 character LED marquee display kit containing o S131 232 004 Serial Display Cable o DSP1 2 1 line by 20 character LED marquee display e S131 ESD 003 1 line by 10 character LED marquee display kit containing o 131 232 005 Serial Display Cable o DSP1 3 1 line by 10 character LED marquee display o DEV27 1 RS 232 RS 485 converter The kits provide both the display and the serial cable required to communicate with it The RSS 131 can be configured to display radiation values in R hr or Sv hr on the display It will not display other sensor values The display is not weatherproof and must be mounted in a customer supplied weatherproof case if it is to be used outdoors For additional details regarding the external displays please refer to the appendices at the end of this manual 55 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS 131 Configuration Utility Overview The RSS 131 can be configure
130. r than this 500 0 level high value will trigger an alarm condition A value of 0 0 will disable this feature Battery Battery points Number of battery points in queue Battery interval Seconds between battery points If this parameter is set to 0 no data will be gathered for this sensor Changing this parameter will delete all points in the queue before changing the point interval l low value will trigger an alarm condition A value of 0 0 will disable this feature Any sensor value that is higher than this value will trigger an alarm condition A value of 0 0 will disable this feature Temperature Temperature points Number of temperature points in queue Temperature interval Seconds between temperature points If this parameter is set to O no data will be gathered for this sensor Changing this parameter will delete all points in the queue before changing the point interval Battery alarm level high Temperature alarm Any sensor value that is lower than this level low value will trigger an alarm condition A value of 0 0 will disable this feature Temperature alarm Any sensor value that is higher than this level high value will trigger an alarm condition A ID VPI VAL VAH Battery alarm level Any sensor value that is lower than this TPI TAL TAH value of 0 0 will disable this feature 28 Copyright O 2006 General Electric Company All rights reserved Rain tip volume Rain tip points Rain tip i
131. range zero state Value ul entered inV C pl These values are unique to each RSS 131 and are determined during calibration They can be found on the calibration o certificate provided by the factory Ml Total nominal electrometer resistance in UN low range at 25 C Total nominal electrometer resistance in a middle range at 25 C 2 2e9 Total nominal electrometer resistance in high range at 25 C 2 5e7 Variation in electrometer resistor over temperature Value entered in PPM C A Variation in electrometer resistor over range resistance temperature Value entered in PPM C MA variation femerture vaueenseamponrc range resistance temperature Value entered in PPM C The value outside parenthesis is for the RSS 131ER device while the value inside parenthesis is for the older 100 mR hr and 10R hr devices Electrometer Gain Electrometer low 5e11 range resistance Electrometer middle range resistance Electrometer high range resistance Electrometer low range resistance variation Electrometer middle 30 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R MM oe el variation General General ID w o ID Zi er Radiation conversion Constant that is multiplied by recorded factor data value in mR h to obtain value that is returned to the user This should be 1 0 for mR h other values can be entered by the user for conversion to Gy h or S
132. rent than these older units in that the primary calibrated output is obtained via the RS 232 port not the analog output Calibration of the unit is done by a series of configurable parameters that are stored in the microprocessor system as described in the prior section The sensitivity of the RSS 131 varies from unit to unit and is specified on the calibration sheet shipped from the factory each time the unit is calibrated A typical value would be between 13 and 15 mV uR hr If radiation data is obtained by connecting the analog output to a data logger the data logger must be programmed to use the sensitivity specified on the RSS 131 calibration sheet This sensitivity is valid only for the low range less than 750 uR hr In the mid and high ranges the analog output sensitivity is invalid 148 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Output Calibration Since the output is not calibrated a calculation must be performed to apply the necessary adjustment to convert the voltage to a R h value In general the form of the calculation is as follows Exposure R h V Bit Alt RAC Where Alt A1 t A2 Blt B1 t B2 RAC the calibration constant provided And t templ C 25 To determine the A1 A2 B1 B2 values you must first know the range of the sensor The following table shows the sensor range as a function of the range output Once the range is known i e
133. rsion string B RSS 131 Version SFTW 131 001 Ver 6 0 8 The RSS 131 is now running with the new queue size 96 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Change the Radiation Recording Interval Changing the recording interval for a sensor is similar to changing the number of data points Unlike changing the queue size a new recording interval take effect immediately when it is downloaded without requiring a reset This example will change the radiation recording interval from its default of 60 seconds to 5 minutes 1 Start the RSS 131 Configuration Utility It will upload the current parameters from the RSS 131 into PC memory E Retrieving Parameters from RSS 1 L eh 2 From the menu select Configuration Sensors Select the HPIC tab amp Sensor Configuration Temperature Pressure Bias Volts Batt volts Wind Speed Wind Dir Recording interval sec 50 lla s000 Conversion factor Alarm Low 0 000 2 500e 8 Alarm High 5 000e 5 Amps Unit Dose Unit Conversion Factor 1 000 97 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 3 Set the recording interval to 300 seconds 5 minutes Bias Volts Batt Volts Sees Wind Speed Wind Dir Recording interval sec 309 Buffer si ee QU Conversion factor Alarm Low 0 000 2 500e 8 Alarm High 5 000e 5 Amps Unit
134. s is done by selecting Configuration Alarm Dial from the menu Enter the phone number in this window To disable calling a computer when an alarm is generated simply delete the number in the text box F Phone Number To disable alarm dial enter blank phone number 9 Once the above settings are complete they must be downloaded to the RSS 131 before they take effect This is done by selecting Online Download Configuration to RSS 131 from the menu Once this is complete the unit will begin monitoring alarm levels 101 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Reprogram Firmware in RSS 131 This example will detail the steps required to reprogram the firmware in the RSS 131 Prior to reprogramming the RSS 131 make sure you have a current copy of the configuration file for the unit as these parameters will be required to restore the unit to its operating condition If necessary a new configuration file can be created by uploading parameters from the RSS 131 and saving them to a file before programming the unit This step is not detailed in this example 1 The programming cable PRGC 131 001 must first be connected between the PC and RSS 131 When this is connected to the RSS 131 it will stop recording data and enter bootstrap mode while it waits for firmware to be downloaded 2 From the menu select Online Download Firmware to RSS 131 This will cau
135. s will begin As the file is verified progress will be reported to the user E X Program validation progress BEBE Percent complete 17 If the program loaded in the RSS 131 differs from the program selected by the user an error will be returned to the user 82 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Reset RSS 131 This window allows the user to reset the RSS 131 There are three different resets that may be accomplished If the Cancel command button or the Windows X button is selected the dialog box will close with no action taken F SS Reset RSS 131 Q 2 on Select reset conditions Leave all parameters and data intact This is the same as turning the unit off and then on Ue Restore all parameters including data buffer sizes to Cancel default values All data will be lost Preserve configuration settings but recreate dat buffers using current settings Existing data will b lost A brief description of each possible reset condition is listed in Figure 11 Leave all parameters and data intact This simply restarts the RSS 131 All data and parameters are untouched The only item affected is the amount of time reported since the unit was last restarted Restore all parameters to default values All Everything in the unit is reset For proper data will be lost operation the parameters provided in the confi
136. se a message box to appear reminding the user to connect the programming cable Fr Download Firmware Ensure that the programming cable is connected 3 To abort programming click the Cancel command button To proceed with reprogramming the unit select the OK command button 4 A dialog box will appear asking which file is to be programmed into the RSS 131 Point to the location of the firmware file that is to be used and click the Open command button The files are named e HPIC HEX for 131 11x 10xxxx and 131 11x 20xxxx units e HPICER HEX for 131 11x ERxxxx units 102 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R e ie gt Computer gt DTLplus E Organize 7 New folder EC a Fe Name Date modified Type 4 Unspecified 2 HPIC hex 12 18 2013 8 22 A HEX File HPIC_ER hex 12 18 2013 8 22 A HEX File y HexFiles hex Ope 103 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 5 The Configuration Utility will immediately begin reprogramming the RSS 131 A message box will appear indicating the current status of the programming operation E fave Percentcomplete 27 6 Once the firmware download is 100 complete the Configuration Utility will verify the program that was downloaded matches the original file E E Program validat
137. se the yy mm dd date format should configure their PC and RSS 131 exactly as shown below Customize Regional Options Numbers Currency Time Date r Calendar When a two digit year is entered interpret it as a year between fi 930 and Short date Short date sample 07701 31 Short date format yy Mhdd y Date separator M Long date Long date sample Wednesday January 31 2007 Long date format dddd MMMM dd yyyy y General Unit Configuration Unit Address 0 Y Time Format Y 100ms Watchdog mm dd yy Non standard C dd mm yy checksum CRC combination External Display Port None Radiation Label C COMI mR hr C COM2 C uSv hr C COMA uGy hr 154 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R No Data Displayed While Graphing Real Time Data Real time graphing requires a few seconds to retrieve initial values before graphing If the graph does not begin to update after a few seconds a problem may exist the graph will look as shown below Real Time Data File Edit Tools View Gallery Help 2hAa e 40nD0aa ja ae E RjOON N amp BE oy whe fa No Data Available Iv Auto Scale Y Min Y Max Y Several conditions may exist which could prevent real time data from graphing If the graph does not update check the following e Make sure the date and time for
138. set the parameter This is not present when reading the current value of the configuration RESPONSE A read command will display the 3 digit identifier and current value of the parameter requested as shown below lt CR gt HPI 60 EXAMPLES HP O HPI lt CR gt to read the HPIC output interval in seconds when the unit address is 1 HP 0 HPI 60 lt CR gt to set the HPIC output interval to 60 seconds Commands Changing certain parameters requires the board be restarted manually by the user before they take effect All parameters that may be set or viewed are listed here for reference For details associated with changing parameters see the serial protocol section Parameters with an asterisk after their 3 digit ID require the system be restarted prior to the change taking effect Normal configuration parameters are listed in Table 5 Lesser used simulation commands are listed in an appendix at the end of the manual The general naming convention used to specify a parameter for one of the sensors is listed here as an aid in remembering sensor parameter names All floating point numbers are stored in IEEE 754 format and may be between 1 175494E 38 to 3 402823E 38 24 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R D winddirecti n ip B battery T temperature ET freon z weiczero c3ecomports ca comporta Table 4 Parameter Naming Convention
139. sion Factor 1 000 4 Close the window by clicking on the X in the upper right corner 5 Download the configuration to the RSS 131 This will send all configuration parameters including the updated queue size to the RSS 131 The new queue size will not take effect until the unit is restarted E RSS 131 Configuration CN File PC Configuration Graph Modem Utils Help Time Version Uptime Sensor Data A D Data Current Data Clear Data Queues Upload Sensor Data from RSS 131 Get Dose Upload Configuration from RSS 131 Download Configuration to RSS 131 Download Firmware to RSS 131 Verify Firmware to RSS 131 Reset RSS 131 COM3 9600 N 8 1 Direct connect 6 From the menu select Online Reset RSS 131 The program will display a dialog box displaying various reset modes Select the third mode that will preserve data points and electrometer settings 95 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R senn de Select reset conditions Leave all parameters and data intact This is the 9 same as turning the unit off and then on Seas C Restore all parameters including data buffer sizes to default values All data will be lost Preserve configuration settings but recreate dat buffers using current settings Existing data will b 7 The RSS 131 will reset and after a few seconds display the current ve
140. sure alarm level PAH Any sensor value that is higher than this high value will trigger an alarm condition A value of 0 0 will disable this feature Wind Direction ASE AAA Wind direction points DPT Number of wind direction points in queue Wind direction Seconds between wind direction points If interval this parameter is set to O no data will be gathered for this sensor Changing this parameter will delete all points in the 26 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Variable Three Description Range Default Digit 0 AO queue before changing the point interval EA aaa level low value will trigger an alarm condition A value of 0 0 will disable this feature Wind direction alarm Any sensor value that is higher than this level high value will trigger an alarm condition A PEN Radiation points HPT Number of radiation points in queue 5000 value of 0 0 will disable this feature Radiation interval HPI Seconds between radiation points If this 0 parameter is set to O no data will be 65535 gathered for this sensor Changing this O gt I Wind direction alarm DAL Any sensor value that is lower than this 10000 parameter will delete all points in the queue before changing the point interval I Radiation alarm level Any sensor value that is lower than this low value will trigger an alarm condition A value of 0 0 will disable this feature Radiati
141. t When an alarm is generated the DIGITAL_OUT1 pin goes high it is low when there are no active alarms This signal is available for attachment to user supplied equipment that can take some action when an alarm occurs So long as at least one alarm is active this signal will remain high When no alarms are active this signal will return to its normal off low state The limits which determine alarm levels are set using the RSS 131 Configuration Utility detailed later in this document To disable alarms for a given sensor either the upper or lower limit for that sensor should be set to 0 This will disable both upper and lower limit alarms The values for upper and lower limits should be entered in absolute units not the units displayed when reading data queues from the RSS 131 For example if the RSS 131 is displaying radiation in mR hr a radiation value of 100 uR hr would be displayed as 100 1 mR hr However to specify this as a limit it would be entered as 1e 4 since 100 uR hr is really 0001 R hr If a conversion factor has been specified so radiation is reported in something other than mR hr conversion factors are specified using the HP HEU nn command the alarm levels specified should also take this conversion factor into account Table 2 summarizes conditions necessary for an alarm to be generated on the RSS 131 Condition Per Alarm Comment Low alarm limit Yes This is the low value at which an alarm is generat
142. t RSS 131 COM3 9600 N 8 1 Direct connect 6 The RSS 131 is now operating with the parameters read from the configuration file 93 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Change Number of Radiation Data Points This example will show how to set the number of radiation data points stored in the RSS 131 to 10 000 As always care must be taken to ensure the total number of data points allocated for all sensors does not exceed the limit of 20 000 1 Start the RSS 131 Configuration Utility It will upload the current parameters from the RSS 131 into PC memory E Retrieving Parameters from RSS 1 U 2 From the menu select Configuration Sensors Select the HPIC tab Sensor Configuration Rain Temperature Pressure Bias Volts Batt Volts HPIC Wind Speed i Wind Dir Recording interval sec 5 Butler Sire f 0000 Conversion factor Alarm Low 0 000 2 500e 8 Alarm High 5 0008 5 Amps Unit Dose Unit Conversion Factor 1 000 94 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 3 Set the buffer size to 10000 r amp Sensor Configuration _ i l Temperature Bias Volts BattWolts Wind Speed Wind Dir Recording interval sec 50 euer Site f 0000 Conversion factor Alarm Low 0 000 2 500e 8 Alarm High 5 0008 5 Amps Unit Dose Unit Conver
143. t when the modem is used This allows the user to compensate for slow or poor quality phone lines 61 All rights reserved RSS 131 OM User s Manual Rev R Configuration Menu The configuration menu selection organizes the system parameters into function groups Each of these groups allows modification of unit parameters as described in more detail below E RSS 131 Configuration Utility h File PC Online Graph Modem Utils Help General Communications Electrometer Sensors Sensor Overview Alarm Dial Filter Backward Compatibility COM3 9600 N 8 1 No modem 62 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R General A Ej General Unit Configuration i Unit Address TE Date Format The General dialog box functions are Unit Address Time Format Radiation Label 100 ms Watchdog Non standard checksum CRC External Display Port External Display Length 63 Y 100ms Watchdog mm dd yy Non standard C dd mm yy checksum CRC combination C yy mmidd External Display Port i None Radiation Label C COMI a Dd C coM2 c S C COM4 C uGy hr i External Display Length e 10 characters C gt 10 characters Sets the units address Choices are from 0 to 99 Specifies how dates are input and displayed The PC must match the RSS 131 da
144. ta as it is written J This command will display each value as it is written to the queue for one sensor Values will continue to be displayed until any key is hit on the terminal that is displaying the data When a key is hit to stop displaying data no response will be echoed to the display COMMAND J yy p n lt CR gt if software version lt 1 5 J yy n lt CR gt if software version gt 1 5 yy the HPIC ID A one byte value that ranges from 0 to Z ASCII excluding o p which COM port is to receive the data 1 2 or 3 This is only used in versions less than 1 5 n which analog input is to be monitored 0 Wind speed T Auxiliary Input 2 Barometric Pressure 3 Wind direction 4 HPIC Output 5 300V 6 Battery 7 Temperature RESPONSE The board will echo OK to the port From then on the point value will be displayed each time it is written to the queue If a sensor is configured with an interval of 5 minutes there will be 5 minutes between displayed values lt CR gt OK 0065 EXAMPLES J 0 1 4 lt CR gt to display radiation values on COM1 as they are written to the queue with software version lt 1 5 J 0 2 7 lt CR gt to display temperature values on COM2 as they are written to the queue with software version lt 1 5 117 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R
145. te format exactly This option determines what label is displayed on the Online Current Data window when radiation data is displayed It changes only the label it does not cause any numerical conversion to occur This also determines which text labels are displayed on the external serial display if one is used Checking this box enables the 100 ms watchdog timer The watchdog timer is not actually enabled in the 131 until parameters are downloaded and the 131 restarted refer to WDE description in Configuration Commands for details This places a 4 byte checksum CRC combination at the end of each data string sent from the RSS 131 instead of the standard backward compatible 4 byte sum of ASCII characters This specifies which serial port on the RSS 131 is attached to the external serial display COM3 is not supported because it is dedicated to the internal modem If an external display is selected this determines how many Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R characters are sent to the display In any case a single line display is assumed If gt 10 characters is selected a 20 character string will be displayed 64 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Communications Configuration 5 Communications Configuration a De COM COM COM3 COM4 BAUD Rate Parity Handshaking
146. the application click on the icon in the upper left portion of the dialog box Click this button to install RSS131 Configuration Utility ver 6 0 software to the specified destination directory Directory C Program Files x86 RSS131 Configuration Utility Change Directory Exit Setup Figure 9 RSS 131 Configuration Utility Installation Location The user will then be prompted for a program group which will contain the shortcut to the RSS 131 Configuration Utility from the Start Menu see Figure 10 This will default to the 57 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RSS131 Configuration Utility program group Click the Continue command button to install into the specified program group Setup will add items to the group shown in the Program Group box You can enter a new group name or select one from the Existing Groups list Program Group RSS131 Configuration Utility Existing Groups Accessories Administrative Tools Figure 10 RSS 131 Configuration Utility Program Group Once the Continue command button is clicked the application will be installed If an error message appears indicating the file MSVCRT DLL is in use and cannot be replaced click Ignore The program will install successfully and run with no problems Command Line Parameter to Specify COM Port The RSS 131 Configuration supports a single command line parameter beginning
147. the correct data will be transmitted while values 10 001 through 10 500 are recorded 2 3 4 5 6 10000 10001 Data sent from RSS 131 with M0 command when value number 10001 is recorded oldest point is lost 3 4 5 6 7 10001 1002 Data sent from RSS 131 with M0 command when value number 10002 is recorded two oldest points are lost The RSS 131 will continue to transmit values 10 001 through 10 500 as shown below until the buffer fills up again 10001 10002 10003 10004 10005 10499 10500 Data sent from RSS 131 with AMO command when value number 10500 is recorded 10001 10002 10003 10004 10005 10499 10500 Data sent from RSS 131 with AMO command when value number 10501 is recorded 44 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Backward Compatibility Commands A D E L M and S The commands in this section maintain backward compatibility with the obsolete RSS 121 and RSS 1013 systems They should not be used in new systems These commands primarily transmit an average exposure rate value upon request This average is determined by storing each 1 second sample into an integrating accumulator When a request is made the average exposure rate is computed and transmitted Depending on the command the accumulator may be reset which will start a new averaging perio
148. the shield when used at the same height h as the ion chamber centerline and along the same straight line from the ion chamber center SOURCE PRIMARY SCATTERD AMBIEN RADIATION Figure 13 Calibration Setup With No Shield 167 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R SENSOR 8cuIN HEAD SOURCE Pk shield HOUSING PE TT ARK S MIN WALL AS pS ji T IN R SCATTERED AMBIENT RADIATION MEASUREMENT Figure 14 HPIC Calibration With Shield 168 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Calculating Sensitivity A The Sample Calibration Sheet at the end of this appendix is a convenient form for recording data and calculated sensitivity B The column labeled P S A Primary Scattered Ambient is the reading in millivolts mV made with NO shield between the source and the chamber C The column S A Scattered Ambient is the reading in mV taken with the shield in place D The column labeled P Primary is the difference of the readings mV P mV P S A mV S A E The exposure rate is determined for each distance involved from the exposure rate at 1 meter from the source F The source calibration ind
149. ts They can be reloaded from the configuration file shipped with the unit They can also be compared to the values on the most recent calibration certificate these are the same as those found in the configuration file No Data Retrieved From Unit The RSS 131 will always record data If the user is unable to retrieve data from the RSS 131 it is likely there is an issue with date and or time settings on the PC The user should verify the date format on the RSS 131 matches the Regional Settings date format on the PC The PC format must match exactly the RSS 131 format The RSS 131 supports only the following date formats e mm dd yy e dd mm yy e yy mm dd The RSS 131 date format can be seen in the General Configuration window General Unit Configuration ME Time Format 100ms Watchdog mm dd yy Non standard C dd mm yy checksum CRC combination C yy mm dd External Display Port None Radiation Label C COMI a mA hr C COM2 C uSv hr C COMAS C uGyhr 152 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Detailed Date Format Examples Users that use the dd mm yy date format should configure their PC and RSS 131 exactly as shown below Customize Regional Options General Unit Configuration ou M si 9 2 ol o o 153 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Users that u
150. unit prior to changing date format Note The yy mm dd date format is requires firmware version 5 2 or later and configuration utility version 4 2 or later The mm dd yy and dd mm yy date formats are supported in all versions of both firmware and configuration utility 90 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Configuration Utility Examples Reload Parameters from Configuration File The RSS 131 ships from the factory with a CD containing the latest firmware Configuration Utility and User Manual In addition the CD also contains a configuration file that is unique to the RSS 131 shipped with the CD The parameters in this configuration file should be used only on the RSS 131 identified by the name of the configuration file the name is the serial number of the RSS 131 This example will show how to reload the RSS 131 with parameters from a previously saved configuration file It assumes the configuration file is accessible on the PC either on a disk drive or on the CD 1 From the File menu select Read 155131 comguracon Uy A File PC Configuration Online Graph Modem Utils Help Default Configuration Read Save Save As Exit COM3 9600 N 8 1 Direct connect 91 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R 2 Select the configuration file from the dialog b
151. uration For details on this subject refer to the saturation section below There are other characteristics that are important such as accuracy stability directional response and others which are not covered in this section These parameters are functions 12 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R of the entire system including electrometer analog signal conditioning etc and therefore are covered in the system specifications Energy Response Energy response is the signal measured as a function of the gamma ray photon energy Ideally this response should be flat such that no energy generates more ions than it would in air The response is characterized by a curve whose X axis is energy and the Y axis the normalized energy response The normalization of the response means that the nominal response for any energy would be 1 0 if the detector were ideal For the HPIC the response curve is shown below Relative response 0 1 10 100 1000 10000 Gamma Energy keV Figure 3 HPIC Energy Response As can be seen the response is not flat across the measurable energy range and the ability to measure gamma s falls off below 60KeV The result of this is that some isotopes will over respond and some will under respond as compared with the air
152. use the collection framework available to customers for the return recycling and treatment of batteries Customer participation is important to minimize the negative effects of batteries to the environment and sustain available natural resources For more information see www weeerohsinfo com Follow the directions outlined for proper removal and disposal of your batteries The following steps can be performed by any end user of this product Remove unit from any mounting apparatus Turn case such that the handle is on top Remove locking features as required and release latches Carefully remove top of case without breaking wire or connections Disconnect wires from circuit board and battery as necessary to remove top of case completely Disconnect any remaining battery connections and remove battery from unit Dispose of battery properly according to local laws and regulations UPON REINSTALLATION OF THE BATTERY ENSURE THE BATTERY LEADS ARE PROPERLY CONNECTED RED LEAD IS CONNECTED TO AND BLACK LEAD IS CONNECTED TO GE Oil amp Gas 8499 Darrow Rd Twinsburg OH 44087 1 330 425 3755 rsweb ge com www ge mcs com Copyright 2008 General Electric Company iv Copyright 2006 2014 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Contents GE OTL GAS A A ia IV MODEM NOTICE Saa A A a An 1 INTRODUCTION iaa ainda 2 GENERA Lin A ic sas teins 2 FIRMWARE q 23305 vice coco
153. v h O mm dd yy _1 dd mm yy CEN fo Watchdog Timer 0 to disable watchdog timer 1 to enable Oorl Enable watchdog timer default The watchdog timer has a fixed duration of 100 ms If the watchdog timer is enabled and it is not reset within this time frame the micro controller will reset itself All data will remain intact within the queues If this is changed the device must be rebooted using the Y serial command Y 0 2 before it takes effect COM1 COM1 baud rate Baud rate for COM1 1200 2400 4800 9600 19200 Effective immediately COM2 baud rate Baud rate for COM2 300 600 1200 2400 4800 9600 19200 Effective immediately COM2 Parity Parity for COM2 E 0 N Effective immediately Setting parity to E or O automatically sets data bits to 7 Setting parity to N automatically sets data bits to COM2 Handshaking RTS CTS Handshaking Effective immediately 0 No handshaking 1 RTS CTS gt 1 Specifies delay after RTS before transmitting mSec COM3 baud rate Baud rate for COM3 1200 2400 4800 9600 19200 Effective immediately 31 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Variable Three Description Range Default Digit ID COM3 Parity Parity for COM3 E 0 N Effective EON IN immediately Setting parity to E or O automatically sets data bits to 7 Setting parity to N automatically sets data bits to 8 Foru May Deu
154. ve bytes with the decimal point shifted according to the data value As soon as a time gap is detected the display moves to the next line and displays the timestamp of the first point recorded after the time gap Data then is displayed as detailed above A sample output with a time gap is shown below In this example the board is configured to record data every 8 seconds Data was recorded beginning at 14 22 33 and continued for 36 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R just under 4 minutes before the unit was manually powered down and then restarted shortly thereafter Radiation has been configured to report mRoentgens per hour HEU 0 lt CR gt 00 00 08 8 seconds between points 05 29 98 14 22 33 start time 0079 0068 0078 0079 0077 0084 0074 0083 0076 0070 00129 data starting at 14 22 33 0075 0077 0074 0079 0078 0072 0076 0080 0073 0073 00118 0073 0079 0074 0070 0073 0071 0084 0083 00085 05 29 98 14 28 50 time of first point after gap 0066 0078 0077 0087 0082 0073 0078 0067 0076 0068 00131 data starting at 14 28 50 0069 0074 0080 0070 0079 0079 0077 0076 0075 0069 00127 0080 0075 0079 0078 0082 0070 0081 0079 0071 0074 00112 0076 0080 0075 00033 37 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R Display Sensor Data S This command will dis
155. ved RSS 131 OM User s Manual Rev R following table The right column shows the serial command that sets the parameter The x is replaced by the range designator of L M or H for Low Mid and High range respectively For example to set the nominal zero of the mid range to 1mV the command would be HP O ZMN 001 For details on the configuration commands see the serial communications section Constant Description Serial Zero Voltage output at 25 C with no input current from the HPIC Command Zero Drift Zero voltage drift in volts C Nominal feedback resistor value at 25 C Gain Drift Resistor drift in ppm C 11 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R High Pressure lon Chamber Principles of Operation The High Pressure lon Chamber HPIC was designed with the objective of achieving the best balance between sensitivity energy response stability measurement range and accuracy No one technology has the optimal characteristics for each of these specifications but the HPIC was selected because it was the best overall solution The detector consists of a 10 inch stainless steel outer sphere that contains approximately 25 atmospheres of argon The figure below illustrates the basic detector with outer 10 cathode and inner 2 anode In operation a high voltage bias of 400 volts is applied to the outer shell while keeping the anode at groun
156. which must be correctly set for the display to function properly This requires the user to remove the small metal cover on the back of the display This will expose a 10 position dip switch These switches must be configured as shown Table 8 Off Off Off Off On On Off Off On 10 On Table 8 External Serial Display Switches WO O IN JD oO IH IW IN rR Once the switches are set connect the serial cable S131 232 003 between the PC and display The RSS 131 must now be configured to write to the display For details on configuring the unit refer to the example later in this document Once set up the system should look as shown in Figure 17 179 Copyright 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R S 131 ESD 002 RSS 131 External RS 232 Display Kit 7 2 Connections RSS 131 White Wire oN DSP 1 4 Vorne Display 2000S Serial in pin 4 Serial in pin 5 Switch Settings 7 1234556 Black Wire Of Of Off Off On On Off Off On On Communications S 131 232 004 8 Pin Connector Cable Assembly Com port 2 OR Electrovert detachable terminal strip connectors Com port 4 5 olg Qjo 5 alt F Q zZ a O a Figure 17 S 131 ESD 001 RS 232 1 x 10 20 Display System 180 Copyright O 2006 General Electric Company All rights reserved RSS 131 OM User s Manual Rev R RS 485

RSS-131 User Manual - GE Measurement & Control

Contents

Download Pdf Manuals

Related Search

Related Contents

RSS-131 User Manual - GE Measurement &amp; Control

Contents

Download Pdf Manuals

Related Search

Related Contents

RSS-131 User Manual - GE Measurement & Control