Example: 3-point calibration for internal control – JULABO SE-Z Heating Circulators User Manual

Page 53

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HE / SE

53

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

1. Set circulator to internal control:
MENU CONTROL page 42

The type of control can be set only in the –OFF- mode.

80.00 °C

120.00 °C

160.00 °C

2. Set working temperature setpoint – SETPNT:

Refer to „Direct temperature setting “ page 26

• 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>).

• 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

.

• 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

Press the

key if parameter is to be retained. Correction function for

parameters or values (prior to OK).

Setting is required only for the first calibration point.

Level 2

Parameter level

Set SENSOR INTERN:

• The parameter flashes, switch by pressing

and

.

An ATC calibration is to be carried out.
Set to >NO<

• The parameter flashes, switch by pressing

and

.

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