Introduction - ABB Industrial enabled Analyzer 9437 Instruction Manual

1 INTRODUCTION

This manual describes how to install and operate the 9437
Low Level Dissolved Oxygen Monitoring system. Fig. 1.1
shows a schematic of the system.
The Dissolved Oxygen (D.O.) transmitters and associated
flowcell have been designed for continuous monitoring and
control of power station boiler feed water/steam condensate.
The 4641 transmitter is a wall-mounted instrument and the
4646 model is a panel-mounted,
Both instruments have a single programmable D.O. input
channel, and a single temperature input channel. The sample
temperature is sensed by a Pt1000 resistance thermometer
incorporated in the flowcell.
Model 4646
Panel-Mounted Transmitter
2
1
/ DIN-sized instrument.
4
Model 4641
Wall-Mounted Transmitter
18 . 1
µg/kg
D.O.
A1
A2
Fig. 1.1 System Schematic
Instrument operation and programming is via four tactile
membrane switches located on the front panel. Programmed
functions are protected from unauthorized alteration by a five-
digit security code.
Flowcell Assembly
Sample
Flow
Upwards