Introduction; Preparation; Checking The Code Number; Wall-/Pipe-Mounted Instruments - ABB 4630 Operating Instructions Manual

1 INTRODUCTION

The 4630/31 and 4635/36 pH/Redox transmitters and
associated electrode systems have been designed for
continuous monitoring and control of pH. The electrode
system can be standardized to the instrument using the built-
in calibration facility and a single point buffering facility
provides easy re-calibration after initial standardization.
The 4630/31 models are wall- or pipe-mounted instruments
and the 4635/36 models are panel-mounted, DIN sized
instruments. All instruments have a single programmable pH
input channel, and a single temperature input channel. When
making temperature compensated measurements the sample
temperature is sensed by a Pt100 resistance thermometer
which can be mounted in the electrode system.
Models 4631 and 4636 incorporate a water wash facility for
system cleaning. During the wash cycle, the Alarm 1 status
and the retransmission value are held in their pre-cycle
condition.
Instrument operation and programming is via four tactile
membrane keys located on the front panel. Programmed
functions are protected from unauthorized alteration by a five-
digit security code.
2867 Dip Electrode
(Shown for Example Only)
Fig. 1.1 System Schematic
2
7.00
Monitoring pH
A1
A2

2 PREPARATION

2.1 Checking the Code Number

2.1.1 Wall-/Pipe-mounted Instruments – Fig. 2.1
Fig. 2.1 Checking the Code Number
(Model 4630/31)
2.1.2 Panel-mounted Instruments – Fig. 2.2
Slide instrument
out of case
3
1
2
Undo captive
screw
Fig. 2.2 Checking the Code Number
(Model 4635/36)
(Wall- /Pipe-mounted Model)
4630-31/500
Remove Plug
(if fitted)
4635-36/500
(Panel-mounted Model)