Introduction - Hoffer Flow Controls CAT3 User Manual

1. Introduction

The CAT3 is a versatile DC or AC powered microprocessor-based
transmitter, which provides pulse output, analog output and High/Low
flow alarm options. Up to 3 circuit boards may be installed to provide
a variety of input/output options.
The flowmeter input circuitry will accept a variety of signal types
including, low level sinusoidal, MCP/RF, pulse and contact closure.
Optional 20-point linearization is available to correct for flowmeter
non-linearities, improving overall system accuracy.
compatible with all Hoffer turbine flowmeters as well as the H.O.G.
series positive displacement flowmeters.
CAT3 Block Diagram
FLOWMETER INPUT
PULSE OUT
ANALOG OUT
An RS232 communications port located under the top plate allows
CAT3 to be remotely configured using DevConfig 3.0, a PC
application program that is included with all units.
CAT3
PCA182
AC/DC
OR
CONVERTER
CONDITIONED SIGNAL
PREAMP
PULSE OUT
ANALOG OUT
PCA180
Introduction
The CAT3 is
PCA184
HIGH
HIGH ALARM OUT
ALARM
LOW
LOW ALARM OUT
ALARM
MICROCONTROLLER
COM
DAC
INTERFACE
PCA183
RS232
1
HP-312