AMETEK MX CTSH - Manual (Page 138)

User Manual MX Series CTSH Compliance Test System
17. Calibration
17.1 About This Chapter
This chapter covers two basic functions: System calibration and system configuration. Single
phase calibration is covered first and additional steps for three phase calibration are also covered.
System configuration is then covered detailing the steps to properly set up the AC power source.
If the CTS system you have includes an AC power source, refer to the separate user manual that
shipped with the AC source for service and calibration information.
17.2 Calibration
The MXCTS system uses a precision measurement system that requires periodic calibration. The
recommended calibration interval is one year. All MXCTS systems are factory calibrated before
shipment, so adjustment should not be needed until after the first year of use.
Note: For calibration at the factory, the A/D card must be returned with the PACS-3-75.
A special calibration program is included in the CTSMXH Software suite to facilitate calibration and
store the calibration constants. This module is called “Calibration” and is available from the CTS
MXH program menu selection. The program screen is shown on the next page. Make appropriate
selection before clicking on the Calibrate button. Upon Clicking the Calibration button, you will be
given step-by-step instructions to complete the calibration. At the end of a calibration, the Accept
button will be available. Clicking on it will cause the software to save the calibration data and
printout a calibration log file.
17.2.1 Required Calibration Equipment
To perform the CTS measurement system calibration, the following equipment is required:
Equipment Description
Digital AC Multimeter Agilent 34401A DMM or equivalent with traceable calibration.
Resistive Load Bank Avtron K565 or equivalent. The load resistor range must be able to
handle 2 - 60A RMS (or higher for PACS-3-75) and be rated for the
power levels used.
Current Shunt 100A Current shunt 0.05 % accuracy or better, e.g. Isotek.
Table 17-1: Required Calibration Equipment
California Instruments Revision G 135