DC or AC Powered Microprocessor Controlled Transmitter Model: CAT3 USERS MANUAL > HP-312February 2008 107 Kitty Hawk Lane, P.O. Box 2145, Elizabeth City, NC 27906-2145800-628-4584 252-331-1997 FAX 252-331-2886 www.hofferflow.comE-mail: [email protected] size="-3">

HOFFER FLOW CONTROLS, INC. makes no warrantyof any kind with regard to this material,including, but not limited to, the implied warranties of merchantability andfitness fora 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 responsibilityfor 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...

HOFFER FLOW CONTROLS,INC. ("HFC") warrants HFC's products("goods") described in the specifications incorporated in this manual to be freefrom defects in material and workmanship under normal use and service, butonly if such goods have been properly selected for the service intended, properly installed and properly operated and maintained. This warranty shall extend for a period of one (1) year from the date of delivery to the original purchaser (oreighteen (18) months if the delivery to the original purchaser occurred outsidethe continental United States). This warranty is extended only to the...

2Introduction The standard unit is packaged in an extruded aluminum enclosure forwall mounting or may be mounted directly on a flowmeter using an optional NEMA 4X or EX enclosure. An optional bracket is alsoavailable for mounting on standard DIN rail.This instrument is designed to conform to the EMC-Directive of theCouncil of European Communities 89/336/EEC and the followingstandards: Generic Emission Standard EN 50081-1 Residential, Commercial & Light Industry Environment. Generic Emission Standard EN 50081-2 Industrial Environment. Generic Immunity Standard EN 50082-1 Residential, Commercial...

MODEL CAT3-( A )-(B )-( C )-( D )-( E )-( F )-( G ) > PULSE INPUT LINEARIZED PULSE OUTPUT LINEARIZED ANALOG OUTPUT POWER SUPPLY ALARM OUTPUT ENCLOSURE STYLE SPECIAL FEATURES PULSE INPUT MODEL CAT3-( A )-( )-( )-( )-( )-( )-( ) > OPTION ( A ) (1)MAG COIL, PULSE, DRY CONTACT (2)MC3P (3)ISOLATED PULSE, RPM, RPR COILS LINEARIZED PULSE OUTPUT MODEL CAT3-( )-( B )-( )-( )-( )-( )-( ) > OPTION ( B ) (1)0-5 TTL / CMOS (2)OPEN COLLECTOR(3)OPEN COLLECTOR WITH PULL UP TO V+(4)AC SQUARE WAVE (5)0-10V SQUARE WAVE (REQUIRES 12-30 VDC POWER SUPPLY) LINEARIZED ANALOG OUTPUT MODEL CAT3-( )-( )-(C )-( )-( )-(...

OPTION ( E ) (4)HIGH OPEN COLLECTOR(5)HIGH TTL / CMOS (6)HIGH RELAY ONE SPDT, CONTACT RATED @ 2A 30V (7)LOW OPEN COLLECTOR(8)LOW TTL / CMOS(9)LOW RELAY ONE SPDT, CONTACT RATED @ 2A 30V > NOTE:WHEN ALARM OPTION IS SELECTED, (AC) POWER IS NOT AVAILABLE.USE REMOTE ACC39B POWER SUPPLY. OPTIONS ( F ) (1)GENERAL PURPOSE.2.6"L X 2.6"H X 2.6"W MINIMUM MOUNTING SPACE.(D)2" LONG DIN RAIL MOUNT SINGLE UNIT.UP TO 20 CAT3 UNITS CAN BE MOUNTED ON A SINGLERAIL. ADD 2" PER UNIT.(3/O) * MEETS CLASS 1, DIV. 1 AND 2, GROUPS C ** , D(3H/O) *** CLASS II, GROUPS E, F, GNEMA 4X WITH Oђ RINGCERTIFIED CSA, ULBODY KILARK...

Introduction5 > (3B/O-ATEX)EExd II C ENCLOSURE. ATEX-APPROVED ޔ FNPT CABLE FEATURES. NOTE:WHEN USING THE AC OPTION WITH A 3/O, 3B/O, OR3B/O-ATEX ENCLOSURE, THE HIGH DOME IS REQUIREDBECAUSE THE AC CONNECTOR IS SLIGHTLY TALLER THAN THE REST. SPECIAL FEATURESMODEL CAT3-( )-( )-( )-( )-( )-( )-(G ) > OPTIONS ( G ) (CE)MARK REQUIRED FOR EUROPE(SP)ANY SPECIAL FEATURES THAT ARE NOT COVERED IN THE MODEL NUMBER, USE A WRITTEN DESCRIPTION OF THE -SP.(W)WINDOWS BASED SETUP DISC AND 6 FOOT COMMUNICATION CABLE. IF THREE OR MORE UNITS ARE ORDERED ON THE SAME PURCHASE ORDER ONE SET IS SUPPLIED AT NO CHARGE.NOTE:PULSE...

DC+ > + DC- DC POWERPULSE-N/C SIG- SUPPLYSIG+ ANLG > - PULSE+ N/CN/C >

DC+ DC- SIG+ANLG SIG- > A B C PULSE+ PULSE-N/C > N/C > Modulated Carrier Pickup (RF) N/C >

Redi-Pulse (TTL) Pickup Coil PULSE-N/C N/C > Redi-Pulse (Open Collector)Pickup Coil

SIG- PULSEINPUT PULSE+ PULSE-N/C -+ N/C N/C >

DC- SIG+ > 2.7K SIG- ANLG PULSEINPUT PULSE+ PULSE-N/CN/C -+ N/C >

- PULSE+ DCSIG- + POWER PULSE-N/CN/C SUPPLYSIG+ANLG DC+ DC- - + N/C LOAD >

Installation and Operation15 Where:Kfactor=Is 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=Is the Flow rate Units setting of 0, 1, or 2. Where 0Ӕ is for Seconds, 1Ӕ is for Minutes, and 2Ӕ is for Hours.CF=Is the Correction Factor setting.Where:AF=Is the 20 mA maximum Flow rate value. 164 AFflowratemAxmAcurrent += > If the calculated flowrate is greater than the AF setting, thecurrent will be set to 24mA to indicate an Over-rangeӔ condition.After calculating the current, the Microcontroller...

DC+ NC1COM1NO1 High/Low-Nomally ClosHigh/Low-Nomally OpenHigh/Low-COM DC- SIG+ SIG- ANLG PULSE+ USER DCS DC+ ALARM1 +- DC- > IndicatorAlarm SIG+COM SIG- ANLG >

V+ USER DCS > 2.7K DC+ ALARM1 +- > AlarmIndicator DC- COM SIG+ >

Message Format And Timeout Communication messages consist of a string of ASCII charactersterminated by a carriage return character. The maximum message length coming to the CAT3 is 20 characters, including the carriage return. The CAT3 will transmit no more than 35 characters beforetransmitting a carriage return. Ifa message longer than 20 characters sent, the instrument respondswith ֓Command Sequence is Too Long! If an unrecognized or invalid command is sent, the instrument responds with ԓInvalid Command! The sending unit RS232C serial port configuration must be configured as follows:Baud rate:2400Data...

22Appendix B - Communications READ Example:If the sending unit wishes to read the number of points that theCAT3 has in the K factor table, the sending unit shall send NPӔ > The CAT3 echoes the sent message, and responds with NUM PTS = 2Ӕ > 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=20Ӕ > The CAT3 echoes the sent message and responds with NUMPTS = 20Ӕ . > The CAT3 checks the ranges for data and rejects writes that are notwithin the allowed range. If the sending unit sends data that is not within the allowed...