Diamond 36kW Manual
Dynatronix, Inc.
198-1600-00 Rev F
Page 65 of 146
10. Calibration Procedure
All calibration procedures must be performed by a qualified service technician.
Review the entire procedure before starting.
Diamond 36kW Series
CALIBRATION
10.1. Overview
All calibration steps are performed using the front panel interface. The calibration values are
written to non-volatile memory where they are retained permanently.
Calibration accuracy is measured by certified test equipment connected externally; the supply
enclosure does not have to be entered. All calibrations are performed by digitally scaling inputs
and outputs.
Each 36kW power supply consists of two 18kW power modules. Each 18kW power module must
independently calibrated. To calibrate an 18kW module the module output bus must be isolated
from the other module output bus (no cross connections between the 18kW output bus
connections) and the load should be connected to the module being calibrated.
10.1.1. Equipment
Calibration equipment required are a meter, a current shunt and a load as described below. If the
optional Analog Control card is being calibrated then a calibrator (Ronan model x86 or equiv.) is
required.
Meter(s)
One or two calibrated Digital Volt Meters (DVMs) of at least 4.5 digit resolution and 0.01% overall
accuracy. Using 2 meters is faster when switching from current to voltage calibration but is not
required.
Current Shunt
A certified shunt with a temperature coefficient of no more than 5 ppm should be used. It is
recommended that a 100 mV shunt which is rated at an even power of ten (1A, 10A, etc.) be
used. This will make conversion of the meter reading easier, requiring only decimal point
placement. The rating of the shunt should be at least 1.5 times greater than the current rating of
the power supply. Certified shunts are available from most shunt manufacturers including:
EMPRO MANUFACTURING COMPANY INC.
P.O.BOX 26060
INDIANAPOLIS, IN. 46226
PHONE: (317) 823-4478
www.emproshunts.com
Part Number - MLA-100-100 for a 100mV/100Amp Shunt
