Introduction - Contrec 202A User Manual

1. INTRODUCTION

The Model 202Ai Rate-Totaliser is a microprocessor based instrument
designed to measure a 4-20mA signal from flowmeters and pressure
transducers. The
instrument can be programmed to display directly in engineering units and
includes features such as linear or square law calculation, integration and
digital filtering.
Rate, Total and Accumulated Total can be displayed in engineering units on
the large LCD display. A front panel switch selects the function for display
and a Reset button allows the Total to be reset to zero.
The instrument is fully programmable, with all calculation constants set via
the front panel switches and stored in a non-volatile memory which will
retain data indefinitely. The user can program span, filtering levels,
display resolution and cutoff point.
The instrument is powered from a 4-20mA input signal and therefore,
requires no external power.
The Model 202Ai Rate Totaliser conforms to the EMC-Directive of the Council
of European Communities 2004/30/EU, the LVD directive 2014/35/EU and the
following standards:
EN61326:2013
EN61010:2010
In order to comply with these standards, the wiring instructions in Section 7.5
must be followed.
Electrical equipment for measurement, control
and laboratory use – EMC requirements :
Residential, Commercial & Light Industry
Environment & Industrial Environment.
Safety requirements for electrical equipment
for measurement, control, and laboratory use.
Introduction 3
202A-M-V3.1