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63
9.7.4. Example: 3-point calibration for internal control
In the temperature range from 80 °C to 160 °C the calibration curve of the
temperature sensor (TT) is to be adjusted to the actual temperatures at
measuring point (CT).
Menu level 1
Î
1. Set circulator to internal control:
MENU CONTROL page 52
The type of control can be set only in the –OFF- mode.
Î
80.00 °C
120.00 °C
160.00 °C
2. Set working temperature setpoint – SETPNT:
Refer to „Direct temperature setting “ page 36
x By pressing the key the circulator switches to the active
>SETPOINT< see example on the left: >SETPNT/1 25.00°C<.
The integer digits flash (Example: <25>).
x Change the value to 80.00 °C by pressing the keys and and
confirm by pressing the key .
The decimal digits flash.
Confirm once more by pressing the key .
x The bath is heated up.
Wait for approx. 5 minutes until the temperature is constant.
3. Reading of temperature measuring device
Read the value of measuring point CT on the device and enter under menu
item >CALVAL X< by using the keypad.
>CALVAL 1< (79.70 °C)
>CALVAL 2< (119.50 °C)
>CALVAL 3< (159.30 °C)
4. Calibration
Menu level 1
Ð
L Press the key if parameter is to be retained. Correction function for
parameters or values (prior to OK).
L Setting is required only for the first calibration point.
Level 2 Parameter level
Î
Set SENSOR INTERN:
x The parameter flashes, switch by pressing
and .
Î
An ATC calibration is to be carried out.
Set to >NO<
x The parameter flashes, switch by pressing
and .
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