KROHNE OPTISENS PAC 050 EN - Manual (Page 17)

Manual OPTISENS PAC 050
17 OPTISENS PAC 050
4.5 Temperature compensation
Main menu
Automatic
compensation
Manual
compensation
. Temp. comp. Temp. comp.
Temp. comp. Auto comp. Manual comp.
. Temperature
. 25.0°C
.
Basic settings
Calibration
temperature
Basic settings Cal. temp. Cal. temp.
0.0°C
Select between two ways of compensation:
1) Automatic compensation with temperature sensor
Mind that the temperature sensor should always measure the medium temperature around the sensor. When
pH sensor and temperature sensor are not immersed in the same solution, better switch to manual
compensation.
2) Manual compensation
If the temperature can be regarded as constant, you can enter the temperature manually instead of
measuring it continuously. The device will then compensate the temperature error of this temperature.
4.5.1 Calibration of the temperature measurement
If you connect the temperature sensor with a twin-core cable, slight deviations might occur between
measured and real temperature. These deviations can be eliminated by calibration.
During start-up, measure the temperature manually and enter a correction term so that the display shows the
exact temperature.
5. Adjustments of the controller
Main menu
.
. Selection of ON/OFF, P or PI controller, adjustment of P ranges and I
Set points functions for 2 set points
.
. Basic settings
Basic settings .
.
Contr. settings
Adjustment of frequencies and pulse/pause
times, hysteresis, direction of the control
action, delay.
For any type of controller you have to enter one or two set points, and you have to tell the device whether
these set points are reached by increasing or decreasing the measured value.