Panametrics DigitalFlow XMT868i, Service Manual

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Appendix B. Calibration and Testing with PanaView
20 DigitalFlow™ XMT868i Service Manual
5. To enter data into the user program, double-click on the Calibration/Test menu . The window appears similar to
Figure 11 .
Figure 11: The Calibration/Test Menu
Proceed to the appropriate sections of this chapter to calibrate and/or test any of the installed inputs and/or
outputs.
B.3 Calibrating Slot 0 Analog Outputs
Every Model XMT868i 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 12.
Figure 12: Ammeter Connection (Output A)
Terminal Block J1 (Slot 0)
B
RTN
B
SIG
A
RTN
A
SIG
4 1
+ -
Ammeter
Load