IM 12B6C2-E-H
1-1. Application
The EXA PH200 transmitter is a 2-wire pH
instrument intended to be used in industrial
installations in the field. For easy maintenan-
ce and operation it should be located close
to the sensors. It is powered from a remote
low voltage DC power supply through the 2-
wire connection. The EXA PH200 is compa-
tible with most commercial available pH sen-
sors and fitting systems.
The instrument is available in two versions:
- A general purpose version for use in safe
areas.
- An intrinsically safe version for use in
hazardous areas. The instrument can then
be installed in Zone 1 with the sensors in
Zone 1 or Zone 0.
The micro-processor is used in this instru-
ment for continuous sensor diagnostics,
flexible on site commissioning and fine tu-
ning by advanced functions.
In general a pH loop can be set up for diffe-
rent purposes:
- To be part of a total process control sys-
tem
- To indicate dangerous limits of a process.
- To monitor product quality.
1-2. Required components for pH
measurement
1. A pH electrode and a reference electrode
or a combined pH-reference electrode.
2. A temperature sensor Pt100 (according
to IEC 751 or DIN) or Pt1000
3. A fitting for the above electrodes with
accessories
4. Signal cables with or without extension
boxes, etc.
5. The EXA PH200 2-wire transmitter with
mounting accessories for wall or pipe
mounting
6. A DC power supply (nominal 24 V DC)
with cabling and optional zener barriers
or an intrinsic safe power supply
7. Peripherals: e.g. strip-chart recorder,
panel indicator, PID-controller.
1-3. Identification
The instrument has an identification label,
which is fixed to the front plate.
This serves as a reference for the full model
code, power supply voltage and serial num-
ber. This label also carries authorised marks
to certify compliance with the current regula-
tory norms.
1
1. INTRODUCTION
MODEL
SERIAL NO.
SUPPLY
To Next Page
Loading...
Need help?
General
