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HFC 9907-A 

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  preparation  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 use 

of the products 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  to  select  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  item  to  be 

connected and locate the appropriate manual(s) and/or drawing(s).  

Identify all model numbers exactly before making any connections. 

A  number  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 

protected by copyright. All rights are reserved. No part of this 

document  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  an  improvement  is 

possible.    This  affords  our  customers  the  latest  in  technology 

and engineering. The information contained in this document 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  number  (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 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. 

 

NOTICE

 

Содержание HIT-2A

Страница 1: ...vember 2009 107 Kitty Hawk Lane P O Box 2145 Elizabeth City NC 27906 2145 800 628 4584 252 331 1997 FAX 252 331 2886 www hofferflow comE mail info hofferflow com USER S MANUAL Model HIT 2A Hoffer Inte...

Страница 2: ......

Страница 3: ...y be requested from HOFFER FLOW CONTROLS This document contains proprietary information which is protected by copyright All rights are reserved No part of this document may be photocopied reproduced o...

Страница 4: ...HFC 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 transportation If Purchaser does not respond...

Страница 5: ...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 Co...

Страница 6: ...HP 306...

Страница 7: ...be performed using any PC based communications program e g HyperTerminal or ASCII terminal The instrument is housed in an attractive NEMA 4X polycarbonate enclosure and can be mounted directly on a fl...

Страница 8: ...LOSURE WITH CLEAR DOOR AND LOCK 4 NEMA 1 ENCLOSURE HIT 2A MOUNTED TO THE OUTSIDE OF CLEAR COVER FOR INDOOR DRY INSTALLATION ONLY 5 NEMA 4X ENCLOSURE HIT2A ENCLOSURE MOUNTED BEHIND CLEAR COVER WITH SUN...

Страница 9: ...IPE MOUNTING KIT 2 PIPE OR SMALLER SPECIFY IF PIPE IS VERTICAL OR HORIZINTAL SPECIAL FEATURES MODEL HIT 2A F OPTION F CE CE MARK REQUIRED FOR EUROPE MIL MIL S 901D SHOCK TESTS H I HIGH IMPACT SHIPBOAR...

Страница 10: ...Introduction 2B HP 306 This page intentionally left blank...

Страница 11: ...positions are fully configurable for both rate and total Accuracy 0 01 Reading 1 count Temperature drift 50 ppm C 2 2 Inputs Magnetic Pickup Frequency Range 0 2 Hz to 5000 Hz Signal Type Low level si...

Страница 12: ...ith pulse output ON 30 less 2 4 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 2 5 AC...

Страница 13: ...62 5 2 8 Alarm Output Option Type Opto isolated open collector 100 VDC 100 mA Function Rate or Total 2 9 Physical Temperature Operating 40 F 40 C to 158 F 70 C 58 F 50 C with optional heater 32 F 0 C...

Страница 14: ...Specification 6 HP 306 This page intentionally left blank...

Страница 15: ...t and 4 20mA output The optional external reset maybe used to reset the accumulated total to zero and clear the displayed accumulated total 3 1 2 Preamplifier The Preamplifier accepts the input from t...

Страница 16: ...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...

Страница 17: ...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...

Страница 18: ...Theory of Operation 10 HP 306 This page intentionally left blank...

Страница 19: ...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 2 must be configured for the selected signa...

Страница 20: ...Installation 12 HP 306 TTL Redi Pulse Pick up with DC Power Reset Input Heater Option...

Страница 21: ...Installation 13 HP 306 Loop Power with TTL Redi Pulse Requires 3 Wire Installation Loop Power with Redi Pulse Open Collector Output Requires 3 Wire Installation...

Страница 22: ...Installation 14 HP 306 TTL Redi Pulse with AC Power 4 2 Typical Output Connections Analog Output with DC Power Heater...

Страница 23: ...Installation 15 HP 306 Analog Output with AC Power Alarm Output HIT 2A AC DC Power Supply TB Customer Load DCS L N GND Earth Loop Loop...

Страница 24: ...Installation 16 HP 306 Analog Output and TTL Redi pulse with AC Power Pulse Output 1 2 3 4 5 6 12 11 10 9 8 7 JP4 JP2 A B C SIG SIG Redi Pulse L N GND Earth...

Страница 25: ...01 Communications Cable 4 4 Wiring When connecting the HIT 2A it is good practice to use shielded cable The shield should be connected to earth ground near the instrument The other end of the shield s...

Страница 26: ...Installation 18 HP 306 This page intentionally left blank...

Страница 27: ...al Configuration Local configuration is accomplished using the four buttons below the display while viewing the configuration parameters on the display Once in the local configuration mode each of the...

Страница 28: ...PointS 20 2 to 20 Number of Points Sets the number of entries in the linearization table 4999 981 Fr 01 0 to 5000 Frequency 1 20 Enter a frequency in Hz for each entry in the table Decimal point is f...

Страница 29: ...utHi Out High Sets flow rate value for 20 mA output PuLSE S oFF oFF 1 10 100 Pulse Scale Sets scale for pulse out 1 10 100 units of total for one pulse out OFF turns pulse out off PuLSE F 8 1 2 4 8 Pu...

Страница 30: ...tion The HIT 2A is configured by the factory before shipment When the instrument is purchased with a Hoffer Flowmeter or when calibration and configuration data are supplied the instrument is configur...

Страница 31: ...emains in a low 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 unit...

Страница 32: ...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 will flash wi...

Страница 33: ...duce flow rate or use lower flow rate decimal point EFLo Flow rate exceeds the 20 mA flow rate setting Reduce flow rate or increase 20 mA flow rate setting LO BAT Low battery Replace battery ies 6 4 A...

Страница 34: ...Operation and Maintenance 26 HP 306 This page intentionally left blank...

Страница 35: ...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 F...

Страница 36: ...on 28 HP 306 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 981 ST 00...

Страница 37: ...iguration must be configured as follows Baud rate 2400 Data bits 8 Parity none Stop bits 1 Handshaking none The HIT 2A echoes all received messages and then transmits a response string terminated with...

Страница 38: ...hall send NP 20 CR The HIT 2A echoes the sent message and responds with NUM PTS 20 CR The HIT 2A checks the ranges for data and rejects writes that are not within the allowed range If the sending unit...

Страница 39: ...verage K factor 1 Linearization table F C METHOD AVG for Average K factor or F C METHOD LIN for Linearization table KD K Factor Decimal Point Location 0 for 00000000 1 for 0000000 0 and all K Factors...

Страница 40: ...laces K 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 Total Units 1...

Страница 41: ...nits 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 RD Rate Decimal Point Location 0 for 00000 1 for 0000000...

Страница 42: ...if RD 3 999999 99 if RD 2 9999999 9 if RD 1 99999999 if RD 0 20mA FLOW DATA PS Pulse Scale 0 for OFF 1 for 1 10 for 10 100 for 100 PULS SCALE DATA DATA shall be OFF for OFF 1 for 1 10 for 10 100 for 1...

Страница 43: ...follows If UA is RATE 99999 999 if RD 3 999999 99 if RD 2 9999999 9 if RD 1 99999999 if RD 0 If UA is Total or Off 99999 999 if TD 3 999999 99 if TD 2 9999999 9 if TD 1 99999999 if TD 0 ALARM OUT DAT...

Страница 44: ...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 i...

Страница 45: ...eives 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 precis...

Страница 46: ...ut 4mA This parameter is passed to the HIT 2A 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...

Страница 47: ...me the DATA 131 0x83 CS Clear Status Status Cleared Clears all errors Note The CL and ST commands work as follows The ST command shall store the present value of the total in Non Volatile memory This...

Страница 48: ...ceives ST CR the HIT 2A echoes with the total 123 45 the old total value If the HIT 2A receives pulses to cause the present total to increment to 0 01 and then receives a ST CR the HIT 2A will echo 0...

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