HIT 2A
48Pages

Model: HIT-2A Hoffer Intelligent Rate Indicator & Totalizer Hoffer Intelligent Model: HIT-2A Rate Indicator & Totalizer USER’S MANUAL USER’S MANUAL HP-306 November 2009 HP-306 June 2012 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

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...

LIMITED WARRANTY HOFFER FLOW CONTROLS, INC. ("HFC") warrants HFC's products ("goods") described in the specifications incorporated in this manual to be free from defects in material and workmanship under normal use and service, but only 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 (or eighteen (18) months if the delivery to the original purchaser occurred outside the continental United States). This...

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...

Introduction 1 1. INTRODUCTION The HIT-2A is a microprocessor-based flow rate indicator and totalizer. The instrument displays flowrate and a resettable total and is compatible with all Hoffer turbine flowmeters and the H.O.G. series positive displacement flowmeters. The instrument can accept a low level frequency signal, a pulse signal, or a contact closure on the input and provides a linearized rate indication and total. The HIT-2A is fully configurable with K-factors, frequencies, and timebase being configured via the front panel key switches or the RS232 communications port. The...

Introduction Model Number Designation MODEL HIT-2A TOTALIZER/FLOW RATE INDICATOR MODEL HIT-2A-( A )-( B )-( C )-( D )-( E )-( F ) ENCLOSURE STYLE INPUT POWER LOOP POWERED ANALOG OUTPUT OPTIONS MOUNTING SPECIAL FEATURES ENCLOSURE STYLE MODEL HIT-2A-( A )-( )-( )-( )-( )-( ) OPTION ( A ) (2) NEMA 4X ENCLOSURE, HIT-2A MOUNTED BEHIND CLEAR COVER. (3) EXPLOSION-PROOF ENCLOSURE. (3A) ATEX 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)...

(AL) LOW ALARM* OPTO ISOLATED OPEN COLLECTOR. (AH) HIGH ALARM* OPTO ISOLATED OPEN COLLECTOR. *NOTE: EITHER LOW OR HIGH ALARM IS AVAILABLE, NOT BOTH. (F) NEMA 4X STYLE 2 ENCLOSURE MOUNTED ON TURBINE. MUST BE USED WITH "X" 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 "X" RISER TURBINE OPTION. (FXHT) 8" LONG TEMPERATURE RISER FOR EXPLOSION-PROOF STYLE 3 ENCLOSURES MOUNTED...

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Specification 3 2. SPECIFICATIONS 2-1 General Display: Total: Total Units: Rate: Rate Units: K-factor: Linearization: Decimal Points: Accuracy: Temperature drift: 2-2 LCD, continuously powered 8 digits 0.26" high. Resettable from front panel. GAL, LIT, FT3, M3, BBL, & “blank”. 5 digits 0.5" high. /MIN, /HR, & /DAY The pulses per unit of Total (e.g. pulses/gallon) are 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 Inputs Magnetic Pickup: Frequency Range: Signal Type: 0.2 Hz to 5000 Hz....

Signal Type: Internal Pull-up: External Magnet: Contact closure to DC common Activates internal reed switch 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. Loop Burden: Supply Backup: One (1) C-size Lithium battery Reverse polarity protected Line Regulation: Supply Backup: Short circuit, Over voltage, & Over One (1) C-size Lithium battery Scale: 4 - 20 mA follows rate. Accuracy: 0.02% of Full Scale @ 20°C. Temperature drift: 40 ppm/°C Update Time: 2.0 seconds. Protection:...

Rate & Duration: Opto-isolated open collector (100 VDC, Opto-isolated open collector (100 VDC, Mount enclosure: with AC power option. Wall Mount & Explosion proof

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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, Loop Driver, Pulse and Alarm Output, and Communications Interface. Loop Driver Flowmeter Input Preamp 4-20 mA Microcontroller Opto-isolated Outputs Pulse Output Alarm Output Communications Interface RS232 User Interface IRDA 3-1 Functional Blocks 3-1-1 User Interface The User Interface consists of a custom LCD display with 4 push buttons; OK, P, > (right arrow), and ^ (up arrow) and an optional external reset. Using the...