M&C TechGroup ECS Operator's manual - Manual (Page 27)

27
Gas sampling and gas conditioning technology 3-4.1-ME
18.2 TEMPERATURE SETTING FOR THE EC/ECS COOLER
The EC/ECS gas cooler is set at the factory to a regulated temperature of +5°C.
Setting of the regulated temperature is
done by trimming potentiometer P3, on the
EC automatic control board of the cooler.
The setting range covers from 0°C to
20°C. Turning it to the right sets a lower
temperature, and turning it to the left sets
a higher temperature.
Connecting an external voltmeter to plugs
2 and 3 allows the nominal set
temperature to be read off and controlled.
A voltage value of 0.1V corresponds to a
temperature of 1°C.
It is possible to measure and control the
current temperature at measuring sockets
1 and 2.
N O T E !
Freezing-up in the cooling stage will endanger the operation of the cooler
unit. For this reason the cooler temperature must never fall below 2°C!
18.3 CONNECTION OF AN EXTERNAL TEMPERATURE READING WITH OPTION
SECOND PT100 SENSOR (PART NO. 02K9500)
The second PT100 sensor is connected to the clamps 5 and 6 on the clamp block X2 (see fig. 8).
The external temperature reading is connected to the clamps 7 and 8. The connection cable is led
through one of the cable glands PG13,5 at the bottom plate of the cooler housing.
Current-Temp.
R
i
> 100k

Setting-Temp.
P3
°C + -
Uref
Connect a d.c. voltmeter
to terminals 1, 2 and 3!
Uref
Utemp
R
C9