Berthold Duo Xpert LB 478 MPLM, Руководство по эксплуатации

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12 Appendix LB 478 MPLM
102
56925-8BA2 Rev.00, 07/2019
Calibration of detectors
NOTE
u
Each detector must be calibrated individually!
u
As part of the calibration procedure, the container must be emptied or filled,
time must be allowed for this.
For the detectors of a MPLM system, a two-point calibration is performed, i.e. first
the calibration of all detectors is carried out at density A and then at density B. In
individual cases, a 1-point calibration may suffice. The calibration of the detectors
is described in detail in the corresponding operating instructions, at this point only
assistance is given. Calibration is documented individually for each detector in the
form of a commissioning protocol (template see 12.2 Setup Protocol LB 478).
1. Connect the HART communicator to detector #1
Note: LB480 Evaluation Units are passive, 24 V auxillary voltage in series to
4 - 20 mA output required.
2. Set the basic parameters.
3. Calibrate first density.
4. Repeat Step 2 and 3 for the remaining detectors.
5. Calibrate the second density at all detectors and trigger calibrate.