Hoffer HIT-21 Intelligent Flow Rate Indicator and Totalizer User
Contents
1. Installation 16 Analog Output and TTL Redi pulse with AC Power O JP4 e Redi Pulse 1 2 urr 2A Ek 5 2L AC DC e olo Nae Power 10 3 E 9 4 eos 5 GND e e E Earth 1 KF lt Pulse Output P 7 ms C 12 1C C 11 JP2 EH 2 e DCS C 10 e e 9 4 0 5 0 Puls 5 Input F e HP 306 Installation 17 4 3 Communications Connections Communications with the HIT 2A using a terminal or a PC using the Windows configuration program requires the use oft he HOFFER HIT2A 301 Communications Cable The communication circuits of the HIT 2A are externally powered and the power for these circuits 1s supplied by the RS232 serial port of the computer terminal The serial port configuration must be set to the following Baud rate 2400 Data bits 8 Parity none Stop bits 1 Handshaking None DB9 Molex Equivalent 60 VDCI Olor T wa Te RSS D VDC2 Ese e 4 8 CTS PN SIG COM 5 C 19 NC N Pin2 Pin 1 Hoffer HIT2A 301 Communications Cable 4 4 Wiring When connecting the HIT 2A it is good practice to use shielded cable Th2. 23 6 2 Maintenance 24 6 3 Error Messages 24 6 4 Analog Output Calibration 25 Appendix A Default Configuration 27 Appendix B Communications 29 Message Format And Timeout 29 Messages 31 HP 306 HP 306 Introduction 1 1 INTRODUCTION The HIT 2A isa microprocessor based flow rate indicator and totalizer The instrument displays flowrate and a resettable total and is compatible with all Hoffer t urbine flowmeters and the H O G series positive displacement flowmeters The instrument can accept a low le vel frequency signal a pulse signal or aco ntact closure on the input and provides al inearized rate indication and total The HIT 2A isfully configurable with K factors frequencies and timebase being configured via the front panel key switches or the RS232 communications port The configuration and monitoring can be performed using any PC based communications program eg HyperTerminal or ASCII terminal The instrument is housed in an attractive NEMA 4X polycarbonate enclosure and can be mounted directly on a flowmeter or wall mounted using an optional mo
3. HP 306 Installation 14 TTL Redi Pulse with AC Power p O lo Redi 12 1 ER edt ulse e JP2 4 EE elol 6 55 9 4 8 s EH ez e 0 CERT HIT 2A S E AC DC Power N Supply GND gt Earth 4 2 Typical Output Connections Analog Output with DC Power JP4 Loop 2 1 BR 11 4 T Loop gt e DC 9 4 eo Power 5 ba O Load HP 306 Installation 15 Analog Output with AC Power TB 2 RH Le AC DC 12 1 lo Power 11 JP2 EH 2 C 10 3C E 4 GND e 5 8 Earth 4 El e Loop O O Loop Customer Load DCS Alarm Output External voltage user se V power supply provides and current suitable for lected relay Diode to protect V against reverse voltages ups MO v 0 8 C 12 1C o 11 JP2 EH 2 o gt 10 4 5 e e 0 OV from external power supply 306
4. ERATE error 0x082 132 EFLOW error 0x084 129 EERES error 0x088 EEPROM reset to factory defaults If multiple errors occur the error codes are logically OR ed For example if the unit has an ETOTAL and ERATE error occurring at the same time the DATA 131 0x83 CS Clear Status Status Cleared Clears all errors Notes l The CL and ST commands work as follows T he ST command shall store the present value of the total in Non Volatile memory This total in non volatile memory shall be the initial total in the event that device power is removed and then re applied The CL command will clear the total in the device and the stored total in EEPROM but retain the present total in a volatile RAM memory location and keep it as the old total value Removal of power from the unit causes this old total value to be lost When the HIT2a receives the ST lt CR gt from the PC it s hall echo back the old total value until the unit adds any value to the present total Ifth e HIT2a receives a second CL command the old total value shall be set to 0 HP 306 Appendix Communications 40 For example if the present total is 123 45 and the HIT2a receives CL lt CR gt the present total is cleared set to 0 0000 the total in EEPROM 15 cleared and the old total value is 1 23 45 Ifth e HIT2a receives ST lt CR gt the HIT2a echoes with the total 123 45 the old total value Ift he HIT2a r
5. B 8 TO 30 VDC EXTERNAL POWER AC UNIVERSAL 100 240 0 15A 50 60 HZ X ENTER X IF LOOP POWERED ANALOG OUTPUT OPTION C OR D BELOW IS SELECTED LOOP POWERED ANALOG OUTPUT MODELHIT 2A HM C MC OPTION C LOOP POWERED 4 20MA OUTPUT 8 TO 30 VDC D LOOP POWERED 4 20MA OUTPUT WITH INTERNAL BATTERIES HP 306 2 Introduction 2A OPTIONS MODEL 2 ADA XC OPTION L 20 POINT LINEARIZATION RR REMOTE RESET AL LOW ALARM ISOLATED OPEN COLLECTOR AH HIGH ALARM OPTO ISOLATED OPEN COLLECTOR NOTE EITHER LOW OR HIGH ALARM IS AVAILABLE NOT BOTH MOUNTI NG MODEL HIT 2A MM CC OPTION NEMA 4X STYLE 2 ENCLOSURE MOUNTED ON TURBINE MUST BE USED WITH RISER TURBINE OPTION FHT 8 LONG TEMPERATURE RISER FOR NEMA 4X STYLE 2 ENCLOSURE MOUNTED ON TURBINE REQUIRED WHEN FLUID TEMPERATURES EXCEED 140 DEG F USED WITH X RISER TURBINE OPTION FX EXPLOSION PROOF STYLE 3 ENCLOSURES MOUNTED ON TURBINE MUST BE USED WITH RISER TURBINE OPTION FXHT 8 LONG TEMPERATURE RISER FOR EXPLOSION PROOF STYLE 3 ENCLOSURES MOUNTED ON TURBINE REQUIRED WHEN TEMPERATURES EXCEEDS 140 DEG F USED WITH X RISER TURBINE OPTION NP NEMA 4X ENCLOSURE PIPE MOUNTING KIT 2 PIPE OR SMALLER SPECIFY IF PIPE IS VERTICAL OR HORIZINTAL SPECIAL FEATURES MODEL HIT 2A C XC C OPTION CE CE MARK REQUIRED FOR EUROPE MIL MIL S 901D
6. F C METHOD AVG for Average K factor C METHOD LIN for Linearization table K Factor Decimal Point Location 0 for 00000000 1 for 0000000 0 and all Factors are less than 9999999 9 otherwise not allowed 2 for 000000 00and all K Factors are less than 999999 99 otherwise not allowed 3 for 00000 000 and all K Factors are less than 99999 999 otherwise not allowed K FAC DECL DATA AK Average K Factor 0 001 to 99999 999 ifKD 3 999999 99 ifKD 2 9999999 9 ifKD 1 99999999 ifKD 0 AVG KFAC DATA HP 306 Appendix B Communications 32 100 for gallons 140 for liters 110 for cubic feet 150 for cubic meters 180 for barrels Command Description Allowed Data Response NP Number Points in the Table AN 2 s to 2 0 m NUM PTS DATA FHH Frequency 1 20 F01 hasarangeof 0 000 tothe value of F02 minus 0 001 F20 hasarange ofthe value from F19 plus 0 001 to 5000 000 Frequencies 02 to F19 must be 0 001 greater than the previous frequency and 0 001 less than the next frequency FREQ DATA for F01 through 220 Data to fixed three decimal places KH K Factor 1 20 K FACT DATA for K01 through K09 K FACT DATA for K10 through K20 DATA to decimal places as per KD command CF Correction Factor 0 001 to 9999999 999 CORR FACT DATA TU
7. If the sending unit wishes to read the number of points that the HIT 2A has in the factor table the sending unit shall send NP lt CR gt The HIT 2A echoes the sent message and responds with NUM PTS 2 lt gt WRITE Example If the sending unit wishes to change the number of points to 20 in the K factor table the sending unit shall send NP 20 lt CR gt The HIT 2A echoes the sent message and responds with NUM PTS 20 lt gt The HIT 2A checks the ranges for data and rejects writes that are not within the allowed range If the sending unit sends data that is not within the allowed range the HIT 2A echoes the sent message and responds with the value that is currently stored in the HIT 2A Example If the sending unit wishes to change the max sample time to 2000 from the previous setting of 10 the sending unit shall send NB 2000 CR The HIT 2A echoes the sent message and responds with MAX M TIME 10 lt gt 306 Messages Appendix 8 Communications 31 Commands Supported By Communications Messages Command Description Allowed Data Response CL Clear Total 0 to 99999999 TOTAL 0 DN Tag Number 0 to 99999999 TAG NUM DATA The first three digits are the units code for total Changing these digits will change the TU settings FC Linearization 0 Average K factor 1 Linearization table
8. Sample Time SRPLE 1 to Set maximum time in seconds to H 80 sample the input frequency Default l Low Sets flow rate value for 4 mA oer e rrr om n High Sets flow rate value for 20 mA output Pulse Scale Sets scale for pulse 1 10 100 units of total for one pulse out OFRF tumspuleoutoff Pulse Freguency Sets frequency of burst of pulse out 1 2 4 8 Password Sets 4 digit password Default 0000 Lock Unit Locks the unit Alarm Function CRAG Select Rate Total for alarm oft tot output OFF turns alarm function 655950 Alarm Out 5 Sets value to activate the alarm Hieft c output Default 99999 999 HP 306 Configuration 22 Set Total Sets Total to user defined value Du Current Out 12 Sets analog output to follow rate or e AN Predefined level ni Pol C 77 Pulse Output Test Outputs a test frequency of 1Hz Leese Yes Alarm Output Test Activates alarm output c E 5 2 Default Configuration The HIT 2A 1s configured by the factory before shipment When the instrument is purchased with a Hoffer Flowmeter or when calibration and configuration data are s upplied the instrument is configured as specified When thei nstrument is shipped without specific configuration information the instrument 1s con figured with default
9. of the return package and on any correspondence FOR WARRANTY RETURNS please have the following information available BEFORE contacting HOFFER FLOW CONTROLS 1 P O number under which the product was PURCHASED 2 Model and serial number of the product under warranty and 3 Repair instructions and or specific problems relative to the product FOR NON WARRANTY REPAIRS OR CALIBRATIONS consult HOFFER FLOW CONTROLS for current repair calibration charges Have the following information available BEFORE contacting HOFFER FLOW CONTROLS 1 P O number to cover the COST of the repair calibration 2 Model and serial number of the product and 3 Repair instructions and or specific problems relative to the product HFC 9708 LIMITED WARRANTY HOFFER FLOW CONTROLS INC HFC warrants HFC s products goods described in the specifications incorporated i inthis manual to be free from defects in material and workmanship under normal use and ser vice but only ifsuch goods have been properly selected for the service intended properly installed and properly operated and maintained This warranty shall extend for a period of 1 year from the date of delivery to the original purchaser or eighteen 18 months if the delivery to the original purchaser occurred outside the conti nental United State s This warranty is extended onl y to the or iginal purchaser Purchaser Purchaser s sole and exclusive remedy i
10. presses the OK button acknowledging the error condition O nce an error condition 1 ackn owledged the errorm essage willn ot be displayed again for 60 seconds if the cause of the error is still present If the alarm output is active from an alarm caused by rate or total condition depressing the OK button while the display is showing the rate and total will reset the alarm output if the condition that caused the alarm is no longer present If the alarm output is active because ofa test command depressing the OK button will n ot reset the alarm output The following table illustrates the Error Messages the problem or cause and a recommended corrective action HP 306 Operation and Maintenance 25 ERROR CORRECTIVE MESSAGE SUE ACTION amp 8 Total rollover None Use different pulse scaler lower EP 0258 Pulse out overflow E TEE point ES EEPROM reset to factory defaults Consult factory Flow rate exceeds the flow rate Reduce flow rate or E RLE disalasccanabilit use lower flow rate Y decimal point Flow rate exceeds the 20 mA flow Reduce flow rate or 22 increase 20 mA rate setting flow rate setting LD ORT Low battery Replace battery ies 6 4 Analog Output Calibration The 4 20 mA analog output has been accurately set to 20 000 mA by the factory No adjustment is required The 4 20 mA output may be verified periodically by installing a d
11. values Refer to Appendix A for a listing of the HIT 2A factory default configuration 53 Remote Configuration The HIT 2A may becon figured remotely via the 5232 communications interface Refert o Appendix B for the communications details HP 306 Operation and Maintenance 23 6 OPERATION AND MAINTENANCE 6 1 Operation A suitable pulse producing device or flow meter is wired to the HIT 2A Signal Input terminals 1 Sig and 2 Sig The Signal Input circuit must be configured for the connected input device using the appropriate jumper blocks Internal batteries external DC or a loop current may provide power to the unit For all power options other than internal batteries A if the primary power islo st the internal backup battery will p rovide for continued operation of the totalizer Once properly wired the operation of the HIT 2A 1s automatic The flow totalizer is updated every 2 seconds with the latest total If no input counts are received the unit remains in al ow power state to conserve power The flow total may be cleared by the front panel switch sequence or by a contact closure on the remote reset terminal to circuit common To reset the un it from the front panel the following key sequence is required Press P CLEArtot is displayed Press OK To enter edit mode Press A To select yes Press OK To clear total Press A To return to operating mode The flow rate indicator m easures the flow rate o
12. SHOCK TESTS HIGH IMPACT SHIPBOARD MACHINERY EQUIPMENT AND SYSTEMS REQUIREMENTS FOR DATED 17 MARCH 1989 MIL STD 167 1 MECHANICAL VIBRATION OF SHIPBOARD EQUIPMENT TYPE I ENVIRONMENTAL amp TYPE II INTERNALLY EXCITED 1 MAY 1974 SP ANY SPECIAL FEATURES THAT ARE NOT COVERED IN THE MODEL NUMBER USE A WRITTEN DESCRIPTION OF THE SP NOTES 1 OPTO ISOLATED OPEN COLLECTOR TRANSISTOR IS STANDARD WITH ALL UNITS 2 ALOCAL RESET MAGNET IS STANDARD WITH ALL UNITS EXCEPT IF REMOTE RESETOPTION IS SELECTED 3 WINDOWS BASED SETUP DISC AND IF REQUIRED 6 FT COMMUNICATION CABLE IF THREE OR MORE UNITS ARE ORDERED ON THE SAME PURCHASE ORDER ONE SET IS SUPPLIED AT NO CHARGE SPARE TADIRAN P N TL2200 S 3 6V 5500mAh OR EQUAL TWO BATTERIES BATTERIES ARE REQUIRED FOR BATTERY POWERED UNITS ONE BATTERY IS REQUIRED FOR ALL OTHER POWER OPTIONS TO RETAIN TOTAL DISPLAY IF POWER FAILS HP 306 Introduction 2B This page intentionally left blank HP 306 Specification 3 2 SPECIFICATIONS 2 1 General Display Total Total Units Rate Rate Units K factor Linearization Decimal Points Accuracy Temperature drift Inputs Magnetic Pickup Frequency Range Signal Type LCD continuously powered 8 digits 0 26 high Resettable from front panel GAL LIT FT3 M3 BBL amp blank 5 digits 0 5 high MIN HR amp DAY The pulses per unit of Total e g pulses gallon are
13. Time AM 1 m to AMI 8 0 m MAX M TIME DATA LF Out Low 0 000 toa maximum value of the Out High setting FLOW DATA HP 306 Appendix B Communications 34 Command Description Allowed Data Response AF Out High Minimum is the Out Low Setting LF to a maximum of the following 99999 999 ifRD 3 999999 99 ifRD 2 9999999 9 ifRD 1 99999999 if RD 0 20mA FLOW DATA PS Pulse Scale w for OFF x for 1 10 for 10 100 for 100 PULS SCALE DATA shall be OFF for OFF IY for 1 10 for 10 100 for 100 Freguency AN 1 AN 2 4 m AN 8 m PULS FREQ DATA PA Password to 9999 PASS WORD DATA LK Lock Unit 0 for 1 for YES LOCK UNIT DATA DATA shall be YES for YES NO forNO HP 306 Appendix B Communications 35 UA Alarm Function 0 for OFF 1 for RATE 2 for TOTAL ALARM FUNC DATA shall be OFF for OFF RAT for RATE TOT for TOTAL AL Alarm Out 0 001 to amaximum defined as follows If UA is RATE 99999 999 ifRD 3 999999 99 ifRD 2 9999999 9 ifRD 1 99999999 ifRD 0 If UA is Total or Off 99999 999 ifTD 3 999999 99 if TD 2 9999999 9 jf TD 1 99999999 if TD 0 ALARM OUT ST Set Total 0 000 to
14. days after notice from HFC the goods will be disposed of in HFC s discretion HFC does not warrant these goods to meet the requirements of any safety code of any state municipality or other jurisdiction a nd Purchaser assumes all risk and li ability whatsoever resulting from the use thereof whether used singly or in combination with other machines or apparatus This warranty shall not apply to any HFC goods or parts thereof which have been repaired outside HFC s factory or altered in any way or have been subject to misuse negligence or accident or have not been oper ated in accordance with HFC s pr inted instructions or have been operated under conditions more severe than or otherwise exceeding those set forth in the specifications for such goods THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE HFC SHALL NOT BE LIAB LE FOR ANY LOSS OR DAMAGE RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OR LOSS OFUSE OF THE GOODS WITHOUT LIMITING THE GENERALITY OF THE FOREGOING THIS EXCLUSION FROM LIABILITY EMBRACES THE PURCHASER S EXPENSES FOR DOWNTIME OR FOR MAKING UP DOWNTIME DAMAGES FOR WHICH THE PURCHASER MAY BE LIABLE TO O THER PERSONS DAMAGES TO PRO PERTY AND INJURY TOOR DEATH OF ANY PERSONS HFC NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO AS SUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE OR USE OF HFC S GOO
15. item to be connected and locate the appropriate manual s and or drawing s Identify all model numbers exactly before making any connections A nu mber of options and accessories may be added to the main instrument which are not shown on the basic user wiring Consult the appropriate option or accessory user manual before connecting it to the system In many cases a system wiring drawing is available and may be requested from HOFFER FLOW CONTROLS This document contains proprietary information which is pr otected by copyright All rights are reserved No part of this docu ment may be photocopied reproduced or translated to another language without the prior written consent of HOFFER FLOW CONTROLS INC HOFFER FLOW CONTROLS policy is to make running changes not model changes whenever im provement 15 ossible T his affords our customers the latest in technology and engineering The information contained in this docum ent is subject to change without notice Return Requests Inquiries Direct all warranty and repair requests inquiries to the Hoffer Flow Controls Customer Service Department telephone nu mber 252 331 1997 or 1 800 628 4584 BEFORE RETURNING ANY PRODUCT S TO HOFFER FLOW CONTROLS PURCHASER MUST OBTAIN A RETURNED MATERIAL AUTHORIZATION RMA NUMBER FROM HOFFER FLOW CONTROLS CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned RMA number should then be marked on the outside
16. 232 Communications I Interface E 3 1 1 User Interface The User Interface consists ofa custom LCD display with 4 push buttons OK P gt right arrow and A up arrow and an optional external reset Using the buttons and the displayed information the user can enter setup parameters rate units pulses per unit of flow etc as well as setup information for the pulse output and 4 20mA output The optional external reset maybe used to reset the accumulated totalto ze ro and clear the displayed accumulated total 3 1 2 Preamplifier The Preamplifier accepts the input from the flowmeter T he Preamplifier applies amplification low pass filtering and wave shaping to the input signal The wave shaping function converts the signal into asqu are wave before sending it to the Microcontroller 3 1 3 Microcontroller The Microcontroller accepts the square wave output of the preamplifier and performs all of the calculations that are required to control the Loop Driver After measuring the frequency of the HP 306 Theory of Operation 8 square wave the Microcontroller uses the following equations to compute the flow rate and current frequency G0 flowrate Kfactor Where Kfactor 15 dependent on the Flow Calculation Method setting and is either the Average K Factor or the Linearized K Factor from the Frequency K Factor table FM 15 the Fl
17. 7 3 1 Functional Blocks 7 3 1 1 User Interface 7 3 1 2 Preamplifier 7 3 1 3 Microcontroller 7 3 1 4 Loop Driver 8 3 1 5 Pulse and Alarm Output 8 3 1 6 Communications Interface 9 3 2 System Response Time 9 4 Installation 11 4 1 Typical Input Connections 11 4 2 Typical Output Connections 14 4 3 Communications Connections 17 4 4 Wiring 17 4 5 Terminal Designations 17 5 Configuration 19 5 1 Local Configuration 19 5 2 Default Configuration 22 5 3 Remote Configuration 22 6 Operation and Maintenance 23 6 1 Operation
18. 9 9 ifTD 1 99999999 if TD 0 RR Read Rate FLOW DATA DATA 0 tothe following maximums 99999 999 ifRD 3 999999 99 ifRD 2 9999999 9 ifRD 1 99999999 if RD 0 ST Set Total See ST command above CN Adjust 4mA output point DATA DATA is the integer value that the HIT2A sends to the 4 20mA converter to output 4mA This parameter is passed to the HIT2A to adjust the 4mA output point of the device This value is used in production at the test step to calibrate the 4mA output point CN will cause an Invalid Command response and absence of the symbol will cause the HIT2A to ignore the data CM Adjust 20mA output point CM DATA is the integer value that the HIT2A sends to the 4 20mA converter to output 20mA This parameter is passed to the HIT2A to adjust the 20mA output point of the device This value is used in production at the test step to calibrate the 20mA output point CM will cause an Invalid Command response and absence of the symbol will cause the HIT2A to ignore the data HP 306 Appendix Communications 39 SA Set Alarm Output On Alarm Active Sets the alarm output active regardless of the settings US Unit Status UNIT STAT DATA Requests the status The values for DATA with no or only one error present are Y No Errors present 128 EPULSE error 0x080 129 ETOTAL error 0x081 130
19. DS AND THERE ARE NO ORAL AGREEMENTS OR WARRANTIES COLLATERAL TO OR AFFECTING THE AGREEMENT PURCHASER S SOLE AND EXCLUSIVE REMEDY IS THE REPAIR AND OR REPLACEMENT OF NONCONFORMING GOODS AS PROVIDED IN THE PRECEDING PARAGRAPHS HFC SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES Disclaimer Specifications are subject to change without notice Some pages are left intentionally blank HFC 9708 CONTENTS 1 Introduction 1 1 1 Model Number Designation 2 2 SPECIFICATIONS 3 2 1 General 3 2 2 Inputs 3 2 3 Battery Powered Version 4 2 4 DC Power Loop Powered 4 2 5 AC Power 4 2 6 Analog 4 20mA Output Option 4 2 7 Pulse Output Option 5 2 8 Alarm Output Option 5 2 9 Physical 3 Theory of Operation
20. Model HIT 2A Hoffer Intelligent Rate Indicator amp Totalizer USER S MANUAL HP 306 May 2011 PERFECTING MEASUREMENT IM H FLOW CONTROLS INC 107 Kitty Hawk Lane lt Box 2145 Elizabeth City WEE 27906 2145 1 800 4584 252 331 1997 FAX 252 331 288 www hofferflow com E mail info hofferflow SCH NOTICE HOFFER FLOW CONTROLS INC makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose This manual has been provided as an aid in installing connecting calibrating operating and servicing this unit Every precaution for accuracy has been taken in the pr eparation of this manual however HOFFER FLOW CONTROLS INC neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages that may result from the useofthepr oducts in accordance with information contained in the manual HOFFER FLOW CONTROLS policy is to provide a user manual for each item supplied Therefore all applicable user manuals should be examined before attempting to install or otherwise connect a number of related subsystems During installation care must be taken tose lect the correct interconnecting wiring drawing The choice of an incorrect connection drawing may result in damage to the system and or one of the components Please review the complete model number of each
21. Total Units All other integer values from 0 and less than 999 will map to custom units TOT UNITS DATA DATA shall be GAL for gallons LIT for liters FT3 for cubic feet M3 for cubic meters BBL for barrels CUS for custom These three numbers will be the same as the first three digits of the tag number Changes to this menu shall cause the changes to the tag number HP 306 Appendix B Communications 33 Command Description Allowed Data Response TD Total Decimal Point Location 0 for 00000000 1 0000000 0 If UA set to Total and AL is greater than 9999999 9 it not allowed 2 for 000000 00 If UA set to Total and AL is greater than 999999 99 it not allowed 3 for 00000 000 If UA set to Total and AL is greater than 99999 9909 it not allowed FLOW DEC L DATA FM Rate Units 0 for seconds 1 for minutes 2 for hours 3 for days FLOW UNITS DATA DATA shall be SEC for seconds MIN for minutes HR for hours DAY for days Rate Decimal Point Location 0 for 00000 1 for 0000000 0 and AF and AL if UA set to Rate is less than 9999999 9 otherwise not allowed 2 for 000000 00 and AF and AL if UA set to Rate is less than 999999 99 otherwise not allowed 3 for 00000 000 and AF and AL if UA set to Rate is less than 99999 999 otherwise not allowed RATE DEC L DATA NB Max Sample
22. a maximum defined as follows 99999 999 ifTD 3 999999 99 ifTD 2 9999999 9 if TD 1 99999999 jf TD 0 TOTAL DATA DATA 0 tothe following maximums 99999 999 ifTD 3 999999 99 if TD 2 9999999 9 jf TD 1 99999999 if TD 0 HP 306 Appendix 8 Communications 36 Allowed Data Response Description OC Current Out 0 Current output follows rate 1 Current output set to 4mA 2 Current output set to 12mA 3 Current output set to 20mA For 0 response Output equal to input For 1 Output is 4mA For 2 response Output is 12mA For 3 response Output is 20mA PR Pulse Output Controlled By PS and FO Pulse Output Released The PS and FO menus shall control the pulse output Used to terminate the TP command TP Output 1Hz Test Frequency for Pulse Output Test Pulse Output Sets output to 1Hz 50 duty cycle signal This mode is for factory test Release Alarm Output for Control According to Menu Settings Alarm Released Releases alarm output for control by the alarm output settings AS Alarm Output Test 0 Alarm output is set low 1 Alarm output is set high For 0 Alarm Active For 1 Alarm Released After using the AS command you must initiate a RA command to allow 2 to return
23. aracters terminated by a carriage turn character The maximum message length coming to the HIT 2A is 20 characters including the carriage return The HIT 2A will tran smit no more than 35 characters before transmitting a carriage return If am essage longer than A 2 0 characters command is sent the instrument responds with Command Sequence is Too Long lt NL gt If an unrecognized or invalid command is sent the instrument responds with Invalid Command NL The sending unit RS232C serial port configuration must be configured as follows Baud rate 2400 Data bits 8 Parity none Stop bits 1 Handshaking none The HIT 2A echoes allre ceived messages and then transmits a response string terminated with a carriage return Ifthe sending unit takes longer than one minute to send a message the HIT 2A aborts the message by clearing the receive buffer If the sending unit PC or other such device wishes to change a setting on the HIT 2A th e sending unit shall follow the command with an equal sign with the data following immediately after the equal sign The carriage return terminates the message Any HIT 2A response that sends data back to the sending unit shall have an equal sign followed by the data Space is allowed between the equal sign and the data on the return message but the total message length is limited to 35 characters HP 306 Appendix Communications 30 READ Example
24. ature Supply Backup One 1 C size Lithium battery Analog 4 20mA Output Option Scale 4 20 mA follows rate Accuracy 0 02 of Full Scale 20 C Temperature drift 40 ppm C Update Time 2 0 seconds Connection Two wire Protection Reverse polarity protected HP 306 4 2 7 2 6 2 9 Specification 5 Pulse Output Option Type Opto isolated open collector 100 VDC 100 mA Divider 1 10 100 or OFF Rate amp Duration See below SPEED Hz 1 2 4 8 Min on off msec 500 250 125 62 5 Alarm Output Option Type Opto isolated open collector 100 VDC 100 mA Function Rate or Total Physical Temperature Operating 4 F 20 C to 158 F 70 C 32 F 0 C to 140 F 60 C with AC power option Humidity 0 90 Non condensing Packaging Wall Mount amp Explosion proof Dimensions for Wall 4 33 110 mm wide x 4 33 110 mm long Mount enclosure 4 33 110 mm tall HP 306 Specification 6 This page intentionally left blank HP 306 Theory of Operation 7 3 THEORY OF OPERATION The HIT 2A consists of six functional blocks These functional blocks are the User Interface Preamplifier Microcontroller L oop Driver Pulse and Alarm Output and Communications Interface Loop Driver 4 20 mA N Opto isolated Outputs Pulse Output Alarm Output User Interface IRDA 3 1 Functional Blocks Flowmeter Input Preamp Microcontroller RS
25. configurable in the range 0 001 to 99 999 999 Up to 20 points Decimal Point positions are fully configurable for both rate and total 1 count 50 ppm C 0 2 Hz to 5000 Hz Low level sinusoidal 30 mV P P minimum Opto Isolated DC Pulse Frequency Range Signal Type High Logic 1 Low Logic 0 Min Current Hystersis Min Pulse width Contact Closure Frequency Range Signal Type High Logic 1 Low Logic 0 Internal Pull up 0 Hz to 5000 Hz DC pulse 4 to 30 VDC lt 1 VDC 0 5 mA 0 4 VDC 0 1 msec 0 Hz to 5000 Hz Contact closure to DC common Open or 4 to 30 VDC lt 0 5 VDC 220 kQ to 3 3 VDC HP 306 2 3 2 4 2 5 2 6 Specification Reset Signal Type Contact closure to DC common High Logic 1 4to 30 VDC Low Logic 0 0 5 VDC Min Current 0 5 mA Min On 25 msec Internal Pull up 100 to 3 3 VDC External Magnet Activates internal reed switch Battery Powered Version Type Two C size lithium battery packs Battery Life 6 years typical 10 years typical for external power With the pulse output OFF With pulse output ON 30 less DC Power Loop Powered Voltage 8 to 30 VDC Current 4 mA Loop Burden 8 VDC maximum Supply Backup One 1 C size Lithium battery Protection Reverse polarity protected AC Power Voltage 100 to 240 VAC Frequency 47 440 Hz Current 150 mA Line Regulation 0 3 typ Protection Short circuit Over voltage amp Over temper
26. e front panel program menu by external momentary switch wired to the reset input or by external magnet The magnet has to be brought close to top of the front panel 3 2 System Response Time The displayed Rate and Total are updated every two 2 seconds The analog output response time to reach steady state due to a change in the flow rate is also approximately two 2 seconds When flow stops the time for the analog output to return to 4 mA will be between 3 and 12 seconds depending on the Maximum Sample Time MST setting MST is adjusted using the NB DATA command where NB isa value between 1 and 80 The default MST setting is NB 1 Adjusting the MST is on ly recommended for low flow applications where the minimum input frequency is below 1 Hz HP 306 Theory of Operation 10 This page intentionally left blank HP 306 Installation 11 4 INSTALLATION The HIT 2A has an input conditioning circuit which accepts signals from most frequency or pulse producing flowmeters The input will interface directly to Turbine Flowmeters Reed Switches Logic Signals Open Collector Outputs The input is protected for over voltage up to 50 volts The flowmeter input terminals 1 amp 2 m ust be configured for th e selected signal type by appropriately setting the input selection jumpers found on the HIT 2A signal input board see following for jumper positions 4 1 Typical Input Connections Coil am
27. e shield should be connected to earth ground near the instrument The other end of the shield should not be connected In order to comply withthe re quirements for Electromagnetic Compatibility as per EMC Directive 89 336 EEC of the Council of European Community this wiring practice is mandatory 4 5 Terminal Designations Terminal Description Signal Pulse Input 8 Signal Pulse Input Shield Reset I ut VDC VDC Reset Common Pulse out Pulse out Alarm 10 Alarm 11 4 20 mA 12 4 20 mA CC e 306 Installation 18 This page intentionally left blank HP 306 Configuration 19 5 CONFIGURATION The HIT 2A is fu lly configurable with all parameters being stored in non volatile memory The instrument may be configured using the front panel keys a PC running Terminal Emulation software a ASCII terminal ora PC running the HIT 2A Configuration software 5 1 Local Configuration Local configuration is accomplished using the four buttons below the display while viewing the configuration parameters on the display The local configuration mode is entered by pressing the P button Once in the local configuration mode each of the four buttons have a special purpose as detailed below Press to increment digit or gt change selection ress for next menu item Press to initiate selection operation and to accept selection Press to move cursor one
28. eceives pulses to ause the present total to increment to 0 01 and then receives a ST lt CR gt the HIT2a will echo 0 01 or the present total The unit mimics this behavior on the display with the Clear Total Menu and the Settotal menu Thereset total input magnet or terminal input acts the same as the receipt of a CL lt CR gt from the communications link HP 306
29. igital milliamp meter in series with the analog output and simulating a full scale or over range flow rate HP 306 Operation and Maintenance 26 This page intentionally left blank HP 306 Appendix Default Configuration 27 APPENDIX A DEFAULT CONFIGURATION Factory default configuration FIELD Value CL No DN 10000000 FC 0 Average KD 3 AK 1 00 NP 20 F01 4999 981 F02 4999 982 F03 4999 983 F04 4999 984 F05 4999 985 F06 4999 986 F07 4999 987 F08 4999 988 F09 4999 989 F10 4999 990 F11 4999 991 F12 4999 992 F13 4999 993 F14 4999 994 F15 4999 995 F16 4999 996 F17 4999 997 F18 4999 998 F19 4999 999 F20 5000 000 KOl 1 00 K02 1 00 K03 1 00 K04 1 00 K05 1 00 K06 1 00 K07 1 00 K08 1 00 K09 1 00 K10 1 00 1 00 K12 1 00 K13 1 00 14 1 00 306 Appendix Default Configuration FIELD Value K15 1 00 K16 1 00 K17 1 00 K18 1 00 K19 1 00 K20 1 00 CF 1 000 TU 100 GAL TD 1 FM 1 MIN RD 3 NB 01 LF 00000 000 AF 99 999 PS 0 OFF FO 8 PA 1234 LK No UA Off AL 99999 98 ST 00000 000 OC 0 Rate TP No AS No HP 306 28 Appendix Communications 29 APPENDIX B COMMUNICATIONS Message Format And Timeout Communication messages consist of ast ring of ASCII ch
30. nce every 2 seconds and display the flow rate If the input pulses are not detected within the maximum sample time 1 to 80 seconds a flow rate of zero 0 00 is indicated The analog output is scaled based on the user selected zero and full scale and the measured flow rate The pulse output generates a bur st of pulses every 2 seconds in accordance with the instrument setup of pulse scaling A large sample time setting and internal math operations may delay the update rate HP 306 Operation and Maintenance 24 6 2 Maintenance The only scheduled maintenance for the HIT 2A 1s periodic battery replacement The instrument has a battery monitor feature which illuminates when the lithium battery voltage approaches its end of life A descriptor BAT illuminates when the battery voltage falls below this predetermined value The low battery detector operates correctly with all power options The battery or batteries should be replaced within several weeks of the first occurrence of low battery warning Left unattended the unit may become inaccurate cease o operate lose setup inform ation or malfunction The batteries should be replaced one at a time to avoid interrupting the power 6 3 Error Messages The HIT 2A is provided with extensive self checking which is used in reporting malfunctions or unusual operating conditions When an error occurs the display willflash with an error message until the user
31. ow rate Units setting of 0 1 2 or 3 Where 0 is for Seconds 1 is for Minutes 27 is for Hours and 3 is for days CF Is the Correction Factor setting owrate current 4mA AF Where AF isthe 20 mA maximum Flow Rate value If the calculated flowrate is g reater than the AF setting the current will be set to 24mA to signal an Over range condition After calculating the current the Microcontroller digitally sends the current information to the Loop Driver 3 1 4 Loop Driver The loop driver uses the digital information received from the Microcontroller to set the current of the loop The Loop Driver supplies power to both the Preamplifier and Microcontroller 3 1 5 Pulse and Alarm Output The Pulse and Alarm outputs are two optically isolated open collector outputs The alarm output activates when the total flow or the rate reaches a user defined level The pulse output activates to give a scaled pulse output indicative of the total flow Both of these outputs are rated for 100 VDC at 100 mA HP 306 Theory of Operation 9 3 1 6 Communications Interface The communication is provided through a RS232C interface to the Microcontroller The external terminal device provides the power for the RS232 interface The Communications Interface is used to configure and trouble shoot the device 3 1 7 Clearing Total The Total amount stored in HIT 2A memory can be cleared from th
32. p Reed Switch Pickups JP4 Pickup SIG 11 JP2 Bm o o a SIG ONANAN 306 Installation 12 TTL Redi Pulse Pick up with DC Power aic Redi Pulse 12 C 11 up2 OJO en gt 10 3 2 SIG ji 8 5 e 6 DC Power 8 to 30 VDC Reset Input JP4 e 12 1 eu 010 20 ES olol 36 Reset 2 Br e 7 CV DC Power 8 to 30 VDC HP 306 Installation 13 Loop Power with TTL Redi Pulse sii Redi Pulse I Eh 2 2 O O MZ Loop 2 10 5 SIG DC S 4 2 Load Loop Power with Redi Pulse Open Collector Output E Loop LH Redi Pulse 12 D ali M 2 Loop C olol 3 88 DC 4 Power 5 2 Supply T O LAAN Load
33. position to the right HP 306 Display C Retot Yes No c fee Ro cRSE Linear Average Points 2 to m 4933 38 0 to 2 5000 555 0 001 to FRI 99999 999 100 GAL tot oet 110 FT3 140 LIT 7383 150 M3 180 BBL K factor 1 20 20 Configuration Clear Total Clears accumulated total and sets _ TOTAL display to zero Tag Number User defined 5 digit number EE Linearization Method Sets the flow calculation method to average K factor or K factor table K factor Decimal Point Set K factor decimal point location Average K factor Enter average K factor Number of Points Sets the number of entries in the linearization table Frequency 1 20 Enter a frequency in Hz for each entry in the table Decimal point is ER Enter a k factor in pulses gal for Correction Factor User defined number between 0 001 and 99999 999 to multiply flow and total Default 1 0 i Total Units Select Total units If custom is selected all indicators are off gal lit ft3 m3 bbl custom Total Decimal Point Set Total decimal point location HP 306 Configuration 21 Menu item Display Option _ Description fto o um Rate Units ec HrS Select RATE units ETE x _ dAY Rate Decimal Point location Set Rate decimal point location
34. s the repair and or replacement of nonconforming goods as provided in the following paragraphs In the event Purchaser believes the goods are defective the goods must be returned to HFC transportation prepaid by Purchaser within twelve 12 months after delivery of goods or eighteen 18 months for goods delivered outsidet he continental United States for inspection by HFC If HFC s inspection determines that the work manship or materials are defective the goods will be either re paired or replaced at HFC s sole determination free of additional charge and the goo ds will be returned transportation paid by HFC using the lowest cost transportation available Prior tor eturning theg oods to HFC Purchaser must obtaina Retur ned Material Authorization RMA Number from HFC s Customer Service Department within 30 day s after discovery of a purported breach of warranty but no later than the warranty period otherwise such claims shall be deemed waived See the Return Requests Inquiries Section of this manual If HFC s inspection reveals the goods are f ree of defects in material and workmanship or such inspection reveals the g oods were improperly used improperly installed and or improperly selected for service intended HF C will notify the purchaser in writing and will deliver the goods back to Purchaser upon i receipt of Purchaser s written instructions and ii the cost of tr ansportation If Purchaser does not respond within thirty 30
35. to normal operation HP 306 Appendix Communications 37 System Commands Supported by Communications Messages OI Output 4mA Output is 4mA Current output set to 4mA MO Output 12mA Output is 12mA Current output set to 12mA OM Output 20mA Output is 20mA Current output set to 20mA OF Output Rate Input Output equal to input Current output follows rate AA Auto Data F DATA R DATA T DATA The response not the echo is sent every two seconds until it receives another message from the master The DATA following the F denotes the frequency of the pulses to a precision of three places past the decimal the DATA following the R denotes the rate to a precision of three places past the decimal and the DATA following the T denotes the total to a precision of three places past the decimal DA Dump All All of the responses in previous table The HIT 2A gives all responses except for the CL command UI Unit Identification UNIT MODEL HIT2A XX 79 227 Model and software number for the unit XX is the hardware revision number YY ZZ is the software revision where YY 18 the major software revision and ZZ is the minor software revision HP 306 Appendix 8 Communications 38 RT Read Total TOTAL DATA DATA 0 to the following maximums 99999 999 ifTD 3 999999 99 ifTD 2 999999
36. unting brackets or an EX enclosure This instrument has been designed to conform to the EMC Directive of the Council of European Communities 89 336 EEC and the following standards Generic Emission Standard EN 61000 6 3 Residential Commercial amp Light Industry Environment Generic Immunity Standard EN 61000 6 1 Residential Commercial amp Light Industry Environment Electrostatic discharge requirements EN 61000 4 2 Radiated radio frequency electromagnetic immunity EN 61000 4 3 Electrical fast transient burst requirements EN 61000 4 4 Immunity to conducted disturbances EN 61000 4 6 HP 306 Introduction Model Number Designation MODEL HI T 2A TOTALI ZER FLOW RATE INDI CATOR MODEL 2 A E MH H ENCLOSURE STYLE INPUT POWER LOOP POWERED ANALOG OUTPUT OPTIONS MOUNTING SPECIAL FEATURES ENCLOSURE STYLE MODEL 2 C XC XC OPTION 2 NEMA 4X ENCLOSURE HIT 2A MOUNTED BEHIND CLEAR COVER 3 EXPLOSION PROOF ENCLOSURE ATEK Exd ENCLOSURE STANDARD BLUE 3B ENCLOSURE FOR BRAZIL GRAY P PANEL MOUNT SURFACE MOUNTED ON CUSTOMER S PANEL NO ENCLOSURE BEHIND PANEL ON HIT 2A PD PANEL MOUNT ENCLOSURE WITH CLEAR DOOR AND LOCK 4 NEMA 1 ENCLOSURE HIT 2A MOUNTED TO THE OUTSIDE OF CLEAR COVER FOR INDOOR DRY INSTALLATION ONLY INPUT POWER MODEL 2 HMM XC XC OPTION A INTERNAL BATTERIES TWO EACH THIS OPTION CAN NOT SUPPORT REDI PULSE COILS
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