4
2 INTRODUCTION
2.1 Classification
According to EN61010-1, AW400 is classified an:
•
electrical equipment for measurement and test
•
electrical equipment for process control
•
electrical equipment designed to be safe at least in the following conditions:
–
altitude lower than 2000 m
–
operation temperature limits -10 to + 50 °C
–
storage temperature limits -40 to + 65 °C
–
maximum relative humidity: 80 % with temperature up to 31 °C, with linear decrease down to 50%
with temperature 40 °C
–
supply voltage allowed variations: 115 or 230 V ac ± 10 %
–
over voltage class (installation class): II
–
pollution degree: 2
2.2 Glossary
PARAMETER
SYMBOL
pH
pH
ORP (oxidation reduction potential)
mV
Dissolved Oxygen*
O2
Residual Chlorine
Cl
Chlorine Dioxide
CD
Ozone
O3
Temperature
T
These symbols are also used in displayed indications.
* Not supported at this time.
2.3 General
Description
AW400 Monitor/Controller Family includes 2 Types of instrument:
•
Transmitter
(Instrument Type 1)
A group of transmitters, both single channel and dual channels and three channels.
•
Controller
(Instrument Type 2)
PID controller for the installed Sensor, with specific algorithms for each type of measured parameter. It can
accept an optional 4–20 mA signal from a flow-meter on channel 2. This second input can be used as Feed
Forward input in the PID algorithm.
Summary of Contents for AW400 Series
Page 1: ...Instruction Manual IM AW4TX Issue 5 Chlorine Transmitter AW400 Series ...
Page 69: ...67 Notes ...
Page 70: ...68 ...