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3BA00068 • 2016-03-07 • Rev. 3
ersa RA 4500
The station can be reset to the above factory settings, as follows. First switch off the sta
-
tion. Now press the ENTER key. While keeping this key pressed, keep the station switched
on until the display test is concluded (all segments light up briefly).
5.5
Resetting the password
If you forget a password, you can delete it as explained in section 5.4. All parameters set
by the user will then also be lost.
5.6
Calibrating the control station
To calibrate the control station correctly, you must proceed as follows:
First, enter the type of the temperature sensor (see 5.3.4 Tip Offset Feature (
�
)), so that
the temperature can be correctly determined.
The calibration feature (see 5.3.5 Calibration Feature (
�
)) brings the actual temperature
into exact correspondence with the displayed temperature. When calibrating, you must
proceed as follows:
• Enter the desired temperature setpoint (see 5.3.1 Setpoint Feature (
�
)).
•
Set the Tip Offset of the temperature sensor used (see 5.3.4 Tip Offset
Feature (
�
)).
•
In the menu item “Calibration”, set the value to 0 by means of the (+) and (-)
keys.
•
Return to the actual value display and wait until the displayed temperature
stabilizes.
• Determine the temperature using a calibrated gauge (e.g. Ersa DTM 100).
• Compare the two display values.
•
Compute the temperature difference, with ∆T = T
RA 4500 D
– T
gauge
•
Set the computed temperature difference ∆T (with sign) in the menu item
“Calibration” by means of the (+) and (-) keys.
Note:
At target temperatures over 550°C (1022°F) the calibration range is auto
-
matically decreased (see section 5.3.5 on the Calibration Feature (C)). To
avoid measurement errors, the measurement sensor should be fixed in
place in the solder bath during the time of the measurement.
Functional description
