Measurement Calibration - Ametek L Series User Manual

10.4 Measurement Calibration

Measurement calibration is recommended on an annual basis to ensure
the measurement results are within published specifications. All
measurement calibration can be performed without removing the covers.
Measurement calibration coefficients are used to adjust each parameter
readout.
Measurement calibration functions are only accessible if the correct
calibration password is entered in the System settings window. If the correct
password is entered followed by the Enter key, the 'Meas Cal' button is
enabled. Make sure the output is calibrated first using the Output Cal button.
Next, clicking on the 'Meas Cal' button brings up the measurement
calibration dialog box.
The following equipment is required to perform the measurement calibration
procedure:
• A 5½ digit digital true rms AC multimeter (recommended equipment is
Fluke model 45, Fluke model 884X or HP 34401A)
• Amp current transformer. (recommended Pearson model 3468)
• Load resister that will produce about 80 % of rated power per phase when
connected to output terminals.
Rev D – March 2011
L-Series and FCS-18 Graphical User Interface User Manual
California Instruments 83