User Manual - BC Group International Inc.
Contents
1. A UNIT BC GROUP INTERNATIONAL INC HIGH PRECISION DIFFERENTIAL DIGITAL PRESSURE METERS USER MANUAL BC BIOMEDICAL DPM 2250 SERIES TABLE OF CONTENTS WARNINGS CAUTIONS i DE SCRIPTION corr 1 Bolo 5 ss E 6 Wc 11 OPTION cem E 13 COMMUNICATIONS NEM ME 14 MANUAL REVISIONS suena dont 18 DANA RRAN Da en 18 SPECIFICATIONS alada 19 NOTES rio 22 This User Manual covers the following units e DPM 2251 e DPM 2252 WARNING USERS The DPM 2250 is for use by skilled technical personnel only WARNING USE The DPM 2250 is intended for testing only and should never be used in diagnostics treatment or any other capacity where it would come in contact with a patient WARNING CONNECTIONS All connections to patients must be removed before connecting the DUT to the DPM 2250 A serious hazard may occur if the patient is connected when testing with the DPM 2250 CAUTION MODIFICATIONS The DPM 2250 is intended for use within the published specifications Any application beyond these specifications or any unauthorized user modifications may result in hazards or improper operation CAUTION SERVICE The DPM 2250 is intended to be serviced only by authorized service personnel Troubleshooting and service procedures should only be p2. UPLOAD command CR Carriage Return QUICKSEND is a feature that allows the user to receive an automatic update of all of the meter data without any further user interaction When the QUICKSEND command is received the feature is turned ON and the meter will automatically send all of the device data every half second The Quicksend feature is toggled ON and OFF with the QUICKSEND command See the table below for details on the data structure Usage Q CR Where QUICKSEND command CR Carriage Return The VERSION command allows the user to read the Software Version that the unit is currently running Usage V CR Where V VERSION command CR Carriage Return 15 X CANCEL The CANCEL command is simply a way to re establish proper control should a communications error occur or an incorrect command be transmitted For the most part an incorrect command will simply be ignored and the meter will return to listening for future commands However a prior command may be cancelled midstream by transmitting the CANCEL command anytime Usage X This command does not require a carriage return nor will it acknowledge with a carriage return However it will echo an X character to indicate that the CANCEL command has been received NOTE The VERSION or CANCEL commands may also be utilized as an acknowledgement of the meter being on line 16 DATA LOCATIONS LOCATION ACCESS DESCRIPTION RANGE 01 REA
3. are Selected for Changing Display Screen SELECT for Choosing Setting or Parameter to Change SETUP RETURN for Entering and Exiting Setup Menu HOLD RESET for Freezing the Unit at its Current Setting and for Clearing the Min Max Value in Capture Register RS 232 7 pin Mini Din Optional Power 2 1 mm receptacle Optional Battery Eliminator SCREENS MAIN SCREENS There can be up to four main screens depending on the model They are PRESSURE TEMPERATURE COMBINED and INPUTS The available screens can be toggled through using aw LO Pressure CHILE 1 Pressure Display with Min Max Option selected M 0 019 M x 0 001 Temperature E AA LAA EA A A Temperature Display with Min Max Option E selected Lelcius BAM MI 599 M x 59 9 3438 Combined Screen showing Pressure amp Temperature 95 Cels So displayed based on LE Teme 100 0 c Analog Cuteut Differential selected range Input Identification Screen Note Sensor limits are PRESSURE SCALE The pressure scale is indicated by the units displayed under the reading The scale can be changed by using to highlight the unit line and to toggle between available pressure units as listed below Pressure Units Differential PSI mmHg 0 inH20 O 4 mmHg 20 inH20 20 inH20 9 60 F cmH20 20 inHg 0 inHg 20 C
4. 75 00 10 000 5 000 0 3000 698 698 517 2 to 258 6 to 15 51 to mmHg 0 C 5171 3879 517 2 258 6 15 51 701 to 701 to 519 0 to 259 5 to 15 57 to mmHg 20 C 5190 3893 519 0 259 5 15 57 d 27 5 to 27 5 to 20 36 to 10 18 to 0 6108 to inHg 0 C 203 6 152 7 20 36 10 18 0 6108 27 6 to 27 6 to 20 43 to 10 22 to 0 6129 to Dg eee 204 3 20 43 10 22 0 6129 951 to 951 to 704 3 to 352 2 to 21 13 to cmH20 O 20 C 7043 5282 704 3 352 2 21 13 374 to 374 to 276 8 to 138 4 to 8 30410 InH O 4 2768 2076 276 8 138 4 8 304 7 374 to 374 to 277 3 to 138 7 to 8 319 to InH O 20 C 2773 2080 277 3 138 7 8 319 2 374 to 374 to 277 1 to 138 5 to 8 312 to InH O 60 F 2771 2078 277 1 138 5 8 312 0 949 to 0 949 to 0 7031 to 0 3515 to 0 0211 to g 7 031 5 273 0 7031 0 3515 0 211 kPa 93 1 to 68 95 to 34 48 to 2 069 to 689 5 517 1 68 95 34 48 2 069 931 to 20 69 to 6895 20 69 0 931 to 0 931 to 0 6895 to 0 3448 to 0 0207 to 6 895 9 171 0 6895 0 3448 0 0207 LAYOUT This section looks at the layout of the DPM 2250 and gives descriptions of the elements that are present Analog Output Temperature BNC Optional 74 Phone Jack Optional Pressure Port LO Male Luer Lock Pressure Port HI Coupler Male Luer Lock Coupler 6 Light Touch Keys for Selecting Parameters and POWER for Turning Unit On and Off UP and DOWN Arrows for Scrolling Through Selected Options When No Options
5. NOTE If the measured pressure is outside of the range of the instrument an OVER RANGE or UNDER RANGE message box will be displayed Typical display with Range Over Range message box M 0 019 MAs 0 001 LO Pressure CHILE JN o oo HL TEMPERATURE SCALE The temperature scale is indicated by the units displayed under the reading The scale can be changed by using to highlight the unit line and to toggle the temperature units between Degrees Celsius and Fahrenheit F NOTE If the measured temperature is outside of the range of the instrument an OVER RANGE or UNDER RANGE message box will be displayed For models with the YSI option the NO PROBE message box will be displayed when the unit detects an open connection For models with the RTD option the OVER RANGE message box will also be displayed with an open connection Temperature Typical display with 7r ha message a Cells NOTE option only MIM 569 101 6 SYSTEM SETUP The Setup Mode allows the user to adjust the configuration of the meter The Setup screen can be entered using the key The parameters can be changed by using to highlight the line and aw to toggle the available options The Setup screen can be exited using the key Setup IO IE Es zz Analog Scale 3 Analog Source contrast Adluzt 5 Auto uff Timer chin The following is a breakdown of the para
6. the previously viewed main screen This will also save any changes to the internal EEPROM memory so they will be retained even with the power turned off or battery removed 12 OPTIONS ANALOG OUTPUT The unit may be ordered with an Analog Output Option This output can either be a Standard DC or a High Frequency DC and is provided via a BNC connector on the top of the unit The source parameter for the analog output is selectable in the Setup Menu between Pressure Pres or Temperature Temp The output is scaled to match the 0 to FS range of the selected source parameter over a variable internally generated reference voltage This reference voltage is selectable from 1 0 to 4 0 VDC in 0 1 V increments through the Setup Menu e Standard DC Analog Output DC This option provides a filtered Analog Output that is representative of the displayed pressure or temperature Filtering is dependent on the Digital Filter Setting See System Setup section for more information This is for slowly changing inputs e High Frequency DC Analog Output HF This option provides a high speed Analog Output that is representative of the displayed pressure or temperature The output is independent of the Digital Filter This is for fast changing inputs alternating at rates up to 100 Hz TEMPERATURE The unit may be ordered with the Temperature Option This option allows the unit to read an external temperature sensor transducer and display temperature
7. D BATTERY LIFE REMAINING 0 to 100 02 READ WRITE CONTRAST to 20 03 READ WRITE AUTO POWER OFF O to 30 seconds 04 READ MODEL RESERVED 100 PSI Max 75 PSI Max PRESSURE 1 TYPE 10 PSI max 5 PSI max 0 3 PSI max PSI mmHg O 0 mmHg O 20 C inHg 0 inHg 20 C 20 C 4 O 20 C inH20 60 F kg cm kPa mBar Bar 0 60 seconds READ See Note 1 See Note 1 3 PRESSURE 1 READ WRITE UNITS DATA LOCATIONS Temp option only LOCATION ACCESS DESCRIPTION RANGE 0 Not Applicable READ TEMPERATURE SENSOR TYPE YSI 700 RTD 100 18 READ WRITE TEMPERATURE UNITS 19 2 See Note 2 21 See Note 2 3 F 1 Pressure readings are returned in the currently set Pressure Units parameter in Location 6 This may be changed via the WRITE command or manually via the keys 2 Temperature readings are returned in the currently set Temperature Units parameter in Location 18 This may be changed via the WRITE command or manually via the keys 3 MIN MAX readings may be reset at any time via a WRITE command to either MIN MAX location or manually via the keys 17 MANUAL REVISIONS Revision Program Revisions Made Rev 01 DT7328CA Origination Rev 02 DT7328CB Temperature Added Rev 03 DT7328CC DC Output Added Rev 04 DT7328CC Pictures Updated Rev 05 DT7328CD Misc Edits Rev 06 DT7328CD Battery Eliminator Plug and Analog Output Info Added Rev 07 DT7328CD Analog Output Specifications Up
8. Hz OUTPUT e 0 1 FS ACCURACY TEMPERATURE OPTION ADDS OPTION Y7 YSI 700 TEMPERATURE PROBE INTERFACE OPTION R1 100 RTD TEMPERATURE PROBE INTERFACE 20 0 TO 100 0 4 0 TO 212 0 F TEMPERATURE RANGE 0 5 FS ACCURACY MAX and MIN TEMPERATURE VALUE CAPTURE AND STORAGE OPTIONAL ACCESSORIES BC20 21100 BC20 21101 BC20 41337 BC20 41339 BC20 30106 BC20 01005 BC20 01006 BC20 01008 BATTERY ELIMINATOR USA Version BATTERY ELIMINATOR Euro Version RS 232 COMMUNICATIONS CABLE 7PIN MINI DIN TO DB 9F USB COMMUNICATIONS ADAPTER DB 9M TO USB A FOR USE WITH BC20 41337 SOFT SIDED CARRYING CASE UNIVERSAL MANOMETER PRESSURE ADAPTER KIT YSI 700 TEMPERATURE PROBE RTD 100 TEMPERATURE PROBE MODEL INFORMATION Use the following model configuration guide to construct or decode a DPM225X series differential Digital Pressure Meter model number DPM 225 N XX Options Blank Not Applicable DC DC Direct Current Analog Output HF High Frequency DC Analog Output Temperature Sensor Option N Not Applicable Y7 YSI 700 R1 1000 RTD Pressure Range 100 Max 100 PSI 75 zMax75 PSI 10 Max 10 PSI 5 5PSI 0 3 PSI 2251 Basic Differential Model 2252 Adds Min Max and RS 232 PRESSURE RANGES BY SENSOR RANGE PRESSURE PRESSURE SENSOR RANGE UNITS 100 PSI 75 PSI 10 PSI 5 PSI 0 3 PSI m 13 50 to 13 50 to 10 000 to 5 000 to 0 3000 to 100 00
9. N HI PORT TEMPERATURE MEASUREMENT OPTIONAL RANGE 20 0 to 100 0 C 4 0 to 212 0 RESOLUTION 0 1 C 0 1 F ACCURACY 0 5 FS 74 Phone Jack for use with Phone Plug terminated NS temperature cables or probes OPTION Y7 YSI 700 Transducers TRANSDUCER COMPATIBILITY 100 O RTD OPTION RTD Supports 0 00385 C and 0 00392 C temperature coefficient aloha sensors 19 ANALOG OUTPUT OPTIONAL Output dependent on OPTION DC Digital Filter setting RATE Output from 0 to 100 Hz OPTION HF Note Sampled at 10 kHz CONNECTIONS Male BNC Connector PHYSICAL amp ENVIRONMENTAL DISPLAY 128 X 64 Pixels Non Backlit Graphical LCD ENCLOSURE ABS Plastic CONSTRUCTION OVERLAY Back printed Lexan SIZE 7 69 x 3 97 x 1 80 Inches 195 3 x 100 8 x 45 7 mm WEIGHT lt 1 Lbs 0 45 kg OPERATING 15 to 30 RANGE 59 to 86 F STORAGE RANGE 40 to 60 40 to 140 F ELECTRICAL amp MISC 9V Alkaline Battery ET ANSI NEDA 16044 or equivalent 9 VDC 200 mA BATTERY OO ELIMINATOR BC20 21100 USA Version BC20 21101 Euro Version a BATTERY LIFE 20 RS 232 Seven 7 pin Mini DIN Receptacle COMMUNICATIONS Pinout RS 232 CONNECTIONS RxD 4lm 0 TxD Com 2 NOTE As Viewed from Unit Exterior 21 NOTES 22 a a A BC Group T ONE STOP SHOP BC GROUP INTERNATIONAL INC 3081 ELM POINT INDUSTRIAL DRIVE ST CHARLES MO 63301 U
10. SA 1 800 242 8428 1 314 638 3800 www bcgroupintl com sales bcgroupintl com DPM 2250 Series User Manual 06 12 Rev 12 Copyright 2012 Made in the USA
11. andling and transport subsequently depleting the battery This plug must be removed before any use Battery Lock Out Remove Plug Before Use 10 KEYS Six tactile touch keys are provided for system operation This key turns the unit off and on The unit will return to the main screen that was active when it was turned off aw In the DISPLAY MODE these keys toggle the display through the available main screens In the SELECT MODE if a parameter has been highlighted these keys will scroll through the available settings On any screen there are a number of parameters that may be selected and changed This key sequences the cursor Highlight through those parameters This key is used to Hold freeze and Reset unfreeze any of the input displays Depressing this key will hold the currently displayed Pressure or Temperature reading until reset Each input can be held independently When active the word HOLD is in the display Depressing this key on a screen that is held will reset that input and remove the word HOLD from the display NOTE In the composite screen the hold feature requires that the specific input be selected using before is used 11 This key toggles the unit into and out of the Setup Mode Depressing this key will enter the Setup screen where the configuration can be viewed and adjusted Depressing the key again will exit the Setup Mode and return to
12. cal equipment for measurement control and laboratory use EMC requirements This equipment has been type tested by an independent accredited testing laboratory and compliance was demonstrated to the above standard to the extent applicable EMISSIONS Radiated and Line Conducted Emissions EN 61000 3 2 2000 Harmonic Current Emissions EN 61000 3 3 1995 A1 2001 Voltage Fluctuation and Flicker IMMUNITY CLASS EN 61000 4 2 1995 A1 1998 A2 2001 Electrostatic Discharge EN 61000 4 3 2002 Radiated Electric Field Immunity EN 61000 4 4 1995 A1 2001 A2 2001 Electrical Fast Transients Bursts EN 61000 4 5 1995 A1 2001 Surge Voltage EN 61000 4 6 1996 A1 2000 Conducted Disturbance EN 61000 4 11 1994 A1 2001 Voltage Dips and Short Interrupts LOW VOLTAGE DIRECTIVE EC Directive 73 23 EC EN 61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use General requirements This equipment has been type tested and compliance was demonstrated to the above standard to the extent applicable NOTICE SYMBOLS Symbol Description ORO Center Negative NOTICE ABBREVIATIONS ANSI American National Standards Institute American Standard Code for Information ASCII Interchange BCD Binary Coded Decimal Celsius centimeters of water degree s Device Under Test Direct Current European Fahrenheit Full Scale inches of mercury inches of water kilogram s kilogram s
13. date Rev 08 DT7328CF Scales Updated High Frequency Output CE Added Rev 09 DT7328CF Misc Edits Rev 10 DT7328CN Media Compatibility Information Updated Misc Edits Rev 11 DT7328CN Format Updated Misc Edits Rev 12 DT7328CN Misc Edits LIMITED WARRANTY WARRANTY BC GROUP INTERNATIONAL INC WARRANTS ITS NEW PRODUCTS TO BE FREE FROM DEFECTS IN MATERIALS AND WORKMANSHIP UNDER THE SERVICE FOR WHICH THEY ARE INTENDED THIS WARRANTY IS EFFECTIVE FOR TWELVE MONTHS FROM THE DATE OF SHIPMENT EXCLUSIONS THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE BC GROUP INTERNATIONAL INC IS NOT LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES NO PERSON OTHER THAN AN OFFICER IS AUTHORIZED TO GIVE ANY OTHER WARRANTY OR ASSUME ANY LIABILITY REMEDIES THE PURCHASER S SOLE AND EXCLUSIVE REMEDY SHALL BE 1 THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS OR PRODUCTS WITHOUT CHARGE 2 AT THE OPTION OF BC GROUP INTERNATIONAL INC THE REFUND OF THE PURCHASE PRICE PA MANUALS BCGroup DPM 2000 DPM 2250 DPM2250_UM_Rev12 doc 18 SPECIFICATIONS RESOLUTION 10 PSI SENSOR Only non corrosive non ionic or otherwise pure fluids and or gases that are compatible with sensor materials including COMPATIBLE glass silicon ceramic epoxy RTV gold aluminum and MEDIA nickel NOTE FLUIDS LIQUIDS ONLY TO BE USED O
14. erformed by qualified technical personnel CAUTION INSPECTION The DPM 2250 should be inspected before each use for obvious signs of abuse or wear The DPM 2250 should not be used and should be serviced if any parts are in question CAUTION CLEANING Do not immerse The DPM 2250 should be cleaned by wiping gently with a damp lint free cloth A mild detergent can be used if desired CAUTION LIQUIDS Do not submerge or spill liquids on the DPM 2250 Do not operate the DPM 2250 if it may have been exposed to fluid CAUTION ENVIRONMENT Exposure to environmental conditions outside the specifications can adversely affect the performance of the DPM 2250 Allow the DPM 2250 to acclimate to specified conditions for at least 30 minutes before attempting to operate it CAUTION MEDIA COMPATIBILITY The DPM 2250 is intended to be used with only non corrosive non ionic or otherwise pure fluids and or gases that are compatible with sensor materials including glass silicon ceramic epoxy RTV gold aluminum and nickel CAUTION LO PRESSURE PORT LIQUIDS INCOMPATIBILIT Y The Lo port of the DPM 2250 is not intended for liquids use only dry gases C NOTICE CE C C The DPM 2250 Series Meters bear the C E mark Based on the following testing standards ELECTROMAGNETIC COMPATIBILITY DIRECTIVE EMC Directive 89 336 EEC as amended by 92 31 EEC and 93 68 EEC EN 61326 1 1997 A1 1998 A2 2001 A3 2003 Electri
15. es The best setting is the smallest number that provides a stable display RTD Type Sets the Temperature Coefficient alpha to match 0 00385 C or OPTION R1 that of the RTD probe 0 00392 C Displays current software program version Read Only Filter Temp ZEROING PRESSURE SCALES When there is no pressure applied to either port the display should read 0 It may be necessary to zero the pressure scales to remove any errors due to ambient conditions This is done by pressing the key until the zeroing instructions are displayed then pressing simultaneously to begin the process The ZEROING message will flash while the scale is being zeroed When the zeroing instructions are displayed again the process is complete To Pressure CHIP TO Pressure CHUMP 0 00 0 00 PSI Fi Press W x TO ero eran LOW BATTERY When the battery life reaches 10 percent the LOW BATTERY message box will be displayed Pressure Typical display with LOWY BATTERY Low Battery message box 7 Life Remaining MEME MIM 000 010 NOTE A line power receptacle is provided so that the unit can be powered by the optional 9 VDC Battery Eliminator enabling continuous operation NOTE The unit is shipped with a Red Battery Lock Out plug installed into the line power receptacle as shown below lts purpose is to prevent the unit from accidentally being turned on during h
16. meters available in the configuration of the unit and their available options System Setup Configuration Description Selects whether the Min and Max values will be Display Min Max displayed on the main screens yes no except COMBINED Analog Output Scaling voltage This is the maximum analog output voltage The output is Analog Scale scaled to this voltage over the positive range of 1 0 to 4 0 Volts selected analog selects the source reading for the analog output Contrast Adjust Sets the contrast of the display screen 0 to 20 Determines the period of inactivity before the meter is turned OFF A timer is started when the meter is turned ON and is reset each time a key is pressed When the timer reaches the value set in this Auto Off Timer parameter the power is automatically turned OFF 0 to 30 Minutes NOTE Setting this parameter to O disables the Auto Off timer When running from line power the meter does not automatically shut off Displays current life of the battery to 100 Battery Life At 10 a warning screen will appear Read Only Beep Length Sets audible beep duration 0 to 15 Determines the number of samples that are Filter Pres averaged in the digital filter The software has a Digital Filter that averages the readings to produce a stable display 0 to 10 Seconds NOTE Increasing this setting will cause a more stable display However it will also cause a slower response to small chang
17. per centimeter squared kilohertz kilopascal s Maximum microampere s milliampere s milliBar s millimeter s millimeter s of mercury Minimum National Electronic Distributors Association pounds pounds per square inch Pressure Relative Humidity Resistive Thermal Device second s Temperature United States of America Volt s Volt s Direct Current NOTICE DISCLAIMER BC GROUP INTERNATIONAL INC WILL NOT BE RESPONSIBLE FOR ANY INJURIES SUSTAINED DUE TO UNAUTHORIZED EQUIPMENT MODIFICATIONS OR APPLICATION OF EQUIPMENT OUTSIDE OF THE PUBLISHED INTENDED USE AND SPECIFICATIONS NOTICE DISCLAIMER BC GROUP INTERNATIONAL INC RESERVES THE RIGHT TO MAKE CHANGES TO ITS PRODUCTS OR SPECIFICATIONS AT ANY TIME WITHOUT NOTICE IN ORDER TO IMPROVE THE DESIGN OR PERFORMANCE AND TO SUPPLY THE BEST POSSIBLE PRODUCT THE INFORMATION IN THIS MANUAL HAS BEEN CAREFULLY CHECKED AND IS BELIEVED TO BE ACCURATE HOWEVER NO RESPONSIBILITY IS ASSUMED FOR INACCURACIES NOTICE CONTACT INFORMATION BC BIOMEDICAL BC GROUP INTERNATIONAL INC 3081 ELM POINT INDUSTRIAL DR ST CHARLES MO 63301 USA 1 800 242 8428 1 314 638 3800 www bcgroupintl com sales bcgroupintl com DPM 2250 Series User Manual Copyright 2012 www bcgroupintl com Made in the USA 06 12 Rev 12 yi BC BIOMEDICAL DPM 2250 SERIES DIGITAL PRESSURE METERS The Model DPM 2250 Series is a family of microprocessor based high precision Differential P
18. ressure Meters which are intended for use in the evaluation and servicing of a wide variety of medical commercial and industrial applications These meters measure compatible differential gas and liquid pressures in various engineering units Available optional features include storage of min and max pressures a RS 232 port for remote control and data collection various analog output options and an optional temperature sensor input either YSI 700 Series or 100 RTD Probe The following are highlights of the main features DPM 2251 Basic Features e GRAPHICAL LCD DISPLAY WITH CURSOR SELECTION OF OPTIONS AND SETUP OF PARAMETERS e 0 05 FS PRESSURE ACCURACY e DIGITAL CALIBRATION AND ZERO OFFSET ADJUSTMENT NO POTS TO TURN e 16 MEASUREMENT e PROGRAMMABLE DIGITAL FILTER e 13 ENGINEERING UNITS e PSI e mmHg 0 e O 4 e mmHg O 20 C inHsO 9 20 e kg cm e nH20 O 60 F e kPa e cmH20 20 e mBar e inHg e Bar e inHg 20 e SELECTABLE DISPLAY OPTIONS AND DIGIT SIZES e BATTERY LIFE DISPLAY 0 to 100 e SOFTWARE ADJUSTABLE DISPLAY CONTRAST DPM 2252 MODEL ADDS e MIN MAX PRESSURE VALUE CAPTURE AND STORAGE 5 232 SERIAL COMMUNICATIONS ANALOG OUTPUT OPTION ADDS OPTION DC DC ANALOG OUTPUT REFRESH RATE DEPENDENT UPON DIGITAL FILTER SETTING OPTION HF HIGH FREQUENCY DC ANALOG OUTPUT ALTERNATING DC SIGNAL REPRESENTING PRESSURES ALTERNATING AT RATES UP TO 100
19. s between 20 to 100 C 4 0 to 212 0 F The temperature probe interface is a standard 4 Phone Jack e YSI 700 Temperature Input Y7 This option allows the unit to display temperature measured by a YSI 700 series standard temperature probe e RTD Temperature Input R1 This option allows the unit to display temperature measured by a standard 100 RID This option supports selectable temperature coefficients alpha to match that of the sensor or probe 0 00385 C most common 0 00392 13 COMMUNICATIONS Since the meter does not handle a great deal of data the RS 232 communications link has been optimized to allow the user through very simple instructions to control and request data from the meter Refer to Specifications section for RS 232 Settings Baud etc Data transmitted received is in standard ASCII format and all numerical values are in BCD format All commands sent to the unit should be terminated with a Carriage Return character CR or in hexadecimal 0 00 All commands and responses echoed by the unit for confirmation of communication and are terminated with Carriage Return and Line Feed characters lt CR gt lt LF gt or in hexadecimal OXODOA If an invalid command is received the unit will respond with the characters The following section describes the protocol used by the meter in detail The READ command allows the user to read system settings and da
20. ta Usage R Location CR Where R READ command Location contains two digits indicating the data location to be read CR Carriage Return Example Data Sent Data Returned Meaning RO8 lt CR gt RO8 lt CR gt lt LF gt Echo of Command Sent 10 25 mmHg lt CR gt lt LF gt 10 25 mmHg measured The WRITE command allows the user to update the system settings Usage W Location 2 digits Data 5 digits CR Where W WRITE command Location contains two digits indicating the data location to be written Data five digit field containing the data to be written at the Location set above CR Carriage Return 14 U UPLOAD Q QUICKSEND V VERSION Examples Data Sent Data Returned Meaning W064 lt CR gt W064 lt CR gt lt LF gt Echo of Command Sent Set Pressure units to inH gt 0 WO0600004 CH W0600004 lt CR gt lt LF gt Echo of Command Sent Set Pressure units to inH2O W05100 CR W05100 lt CR gt lt LF gt Echo of Command Sent lt CR gt lt LF gt Invalid Command Response Location 05 is Read Only The UPLOAD command allows the user to read all of the selected device data from locations 1 through 16 with a single command The data returned will be formatted as a single block per location separated by a carriage return line feed character sequence CRLF equivalent to hexadecimal 0 000 See the table below for details on the data structure Usage U CR Where U
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