Siemens 7MB2041, Руководство по эксплуатации, Страница: 57 / 152

Operation
5.4 Operating functions
OXYMAT 64
Operating Instructions, 06/2008, A5E00880383-03
55
5.4.3.2 Zero calibration (function 20)
2O Zero calib. O
2
Setpoint : 5.4 vpm
Act.val. : O.OO vpm
Start calibration
CANCEL
Figure 5-9 Zero calibration
In order to be able to calibrate the zero, the device must be in the "Measure" operating state.
If this is not the case, calibration is not possible. The display will show the message
"Analyzer is not measuring".
The zero is calibrated simultaneously for all measuring ranges, even when the span of the
measuring ranges is calibrated individually.
Only initiate calibration when the measured value (actual value) has stabilized after applying
the zero gas. Otherwise, the calibration may be imprecise.
If there is a lot of noise, increase the time constant before calibrating (function 50).
See also
Electric time constants (function 50) (Page 71)
5.4.3.3 Span calibration (function 21)
Single calibration ("Measure" operating state required)
21 Sp.cal. all MRs O
2
Calibration MR 1
Calibration MR 2
Calibration MR 3
Calibration MR 4
Figure 5-10 Carry out single calibration