GE DigitalFlo XGM868i, Руководство по обслуживанию

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DigitalFlow™ XGM868i Service Manual 43
Appendix B. Calibration and Testing with PanaView
B.3 Calibrating Slot 0 Analog Outputs
Every Model XGM868i flowmeter includes two built-in analog outputs (A and B) at terminal block J1 , which is
designated as Slot 0 . Both the zero-point and full-scale values for each output must be calibrated. After calibrating the
outputs, which have a resolution of 5.0

A (0.03% full scale), their linearity should be tested.
Note:
The zero point of the analog output may be set for either 0 mA or 4 mA. However, the calibration procedure
always uses the 4 mA point, as the meter will extrapolate this value to obtain the 0 mA point.
Prepare for calibration by inserting an ammeter in series with the load on analog output A at terminal block J1, as
shown in Figure 11.
Figure 11: Ammeter Connection (Output A)
1. From the Calibration/Test menu (see Figure 10 on page 42), double-click on the Calibration entry to open the
option.
2. In the center pane, double-click on Slot 0 .
Note: The
Slot 1
option only appears in the center pane if an option card has been installed in this slot.
Terminal Block J1 (Slot 0)
B–
RTN
B+
SIG
A–
RTN
A+
SIG
4 1
+ -
Ammeter
Load