JULABO LH 85 High Dynamic Temperature System - Manual (Page 57)

57
8.8. Sensors
ATC - Absolute Temperature Calibration
 Select the submenu "Temp.Sensor" with enter
.
 Select the desired option with the up/down cursor keys
.
A flashing digit indicates that a value needs to be
entered i.e. set.
ATC Int: internal
sensor
ATC Ext: external sensor
 Enter the desired compensating value and set this value by
pressing enter .
Notice:
ATC Int: Do not alter the factory-setting!
ext. Pt100
Calibrated thermometer (T
M
)
Presto: Pt100 sensor (T
ExtIst
)
Setp.: xx.00°C
IntAct xx.00°C
ExtAct: 51.22°C
Control: Intern
ATC Ext:
serves calibration of an external Pt100 sensor.
 Immerse the external Pt100 sensor and a calibrated
thermometer together in a calibration bath at 50°C, for example,
and allow the reading to stabilize.
 Read the temperatures of the calibrated thermometer (T
M
) and
the external Pt100 sensor (T
ExtIst
) in their respective displays.
 Calculate the temperature difference and enter and set this
difference value as the ATC external compensating parameter.
(Example:
T = T
ExtIst
- T
M
= 1.22 K)
 Use the keypad to enter the desired compensating value
(e.g. 1.22 °C) and set with enter .
Important:
The ATC function remains active until reset to 00.00 °C.