JULABO EH-39 Open Bath Circulator - Manual (Page 23)

EH
23
6.5. ATC - Absolute Temperature Calibration
Working temperature
range refer to page 8
40
80
160
120
0
 1-point
calibration:
The temperature sensor can be calibrated at any value within
the working temperature range.
 Set the high temperature cut-off / safety temperature to a
value above the desired adjustment value (Example: 80 °C).
 Place
a calibrated thermometer (resolution: 0.01 °C) in the
middle of the bath to measure the actual bath temperature.
48.87
°C
1. Turn on the circulator with the mains switch.
2. Set the desire adjustment value.
(Example: 50.0 °C) Setting of value see below.
3. Start the unit
Press the key for about 4 seconds.
4. The bath is heated to 50.0 °C.
When the working temperature is reached, wait until the
circulator maintains a constant bath temperature
(after about 3 minutes).
5. Start the calibration:
Press the hidden key and the key at the same time until
the decimal point of the display blinks.
6. Read the bath temperature from the calibrated thermometer
and set the rounded value on the circulator.
(example: 48.87 °C rounded to 48.9 °C).
7. For a short while the LED temperature DISPLAY indicates the
message „CAL“.
Setting the temperature
 Press one of the keys
for a short moment.
The setpoint value instead of the actual value is indicated on
the display. The value can now be changed.
 Change value:
Press to set a higher value.
Press to set a lower value.
Keep the keys depressed for the value to change fast.
 Press
the key to store the value.

Notice:
If the determined value is bigger than the tolerance limit of
±5 °C, the value is ignored for the input!
Error message: -Err