Berthold Duo Xpert LB 478 MPLM, Operating Manual

Page: 68 / 136

7 Main Menu Device Setup LB 478 MPLM
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56925-8BA2 Rev.00, 07/2019
Perform calibration
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DANGER
Danger to life from electric shock!
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The repair may only be carried out by a qualified electrician.
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Please adhere to the relevant safety regulations.
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During servicing on the hardware as well as during wiring of the detector,
the measuring system, connected relay contacts and all inputs and outputs
must be de-energised.
In case of an electric shock, carry out first aid measures and immediately call an emer-
gency service.
1. Connect the measuring lines of the current measuring device on the back of
the EVU to the analog output.
2. Observe the terminal allocation in the document “Technical information”.
3. Click on the button <Calibration> .
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The device switches to test mode and a new window (Analog output calibra-
tion) opens.
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The calibration point 4 mA is displayed and the current measuring instrument
shows a value.
4. Enter the indicated value on the current measuring instrument in the input
box (Fig. 49, item 4).
5. Click on the button <Continue> .
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The calibration point 20 mA is displayed and the current measuring instrument
shows a value.
6. Enter the indicated value on the current measuring instrument in the input
box (Fig. 49, item 5).
7. Click on the button <Continue> .
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A message appears “Calibration successful”.
8. Click on the button <Continue> .
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The calibration of the analog output is completed.