Hoffer Flow Controls HIT-2A User Manual page 7

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 configuration and monitoring can 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 flowmeter or wall mounted
using an optional mounting 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 & Light Industry Environment.
Generic Immunity Standard EN 61000-6-1
Residential, Commercial & 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
Introduction
HP-306
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