65
8024252/AE00/V1-0/2020-07| SICK
O P E R A T I N G I N S T R U C T I O N S | ZIRKOR200 Ex-D
Subject to change without notice
MAINTENANCE
8
▸
Then re-establish all electrical and pneumatic connections. The cables are connected
according to the following diagram:
▸
Install the probe and let the system heat up to operating temperature.
▸
Perform a two-point adjustment after 24 hours of operation.
8.6.10
Stability criteria during adjustment
During adjustment, the cell voltage is checked for stability. This check works according to
the following criteria:
The last measured value is stored temporarily. If the next value is out of tolerance, the
internal timer is reset and the new value is stored temporarily. This means that if the
timer has not been reset, the value is stable. This means that the last measured value
after the timer (2 minutes) is used to calculate the constants or slope.
Terminal
Color
Description
Polarity
Unit
1
White/brown
Signal cable, measuring cell
-
mV
2
Brown
Signal cable, measuring cell
+
mV
3
Green
Thermocouple 1
+
mV
4
White
Thermocouple 1
-
mV
31
Green
Thermocouple 2
+
mV
41
White
Thermocouple 2
-
mV
6
Black
Probe heater
7
Blue
Probe heater
8
Green/yellow
Protective conductor heating
9
Grey
Solenoid valve (remains connected)
10
(Grey-blue)
Solenoid valve (remains connected)
