SEFRAM DAS220, User Manual

Page: 21 / 80

Page 3.7
3.6. Offset calibration
You can easily calibrate the recorder inputs for the voltage and thermocouple offsets. This
will remove any offset present on different channels.
To do so:

Let the appliance work for 20 minutes (ambient temperature 20-25°C).

Enter the recorder main page and then press the “ Setup
” key.

Select the “
Additional Option
” menu.

Select the “
Electric Calibration
” menu.

Finally, press the “
Calibration offset
” key in order to confirm the calibration, which
will last approximatly 5 minutes.

Restart the appliance.
3.7. Default calibration
You can restore the default factory calibration to correct any possible mistake in the
calibration coefficients:
Enter the “
Electric Calibration
” page (see the previous paragraph).
By pressing the
“Recover factory calibration”
key and then by confirming, you will
restore the default factory calibration coefficients and give the date of initial plant start.
3.8. Demo mode
With the
“Demo mode”
, you can apply a fictitious simulation to the inputs.
To do so, activate the trial mode and restart the appliance: the channels will be emulated and
a sine wave will be applied to all the channels.
Do not forget to remove this mode after test.