Dynatronix LT1200X SERIES Specifications download pdf (Page 57)

Smart LT Manual Dynatronix, Inc.

198-0853-02 Rev F Page 57 of 126

10. Calibration Procedure

All calibration procedures must be performed by a qualified service technician.

Review the entire procedure before starting.

LT1200X Series

CALIBRATION

10.1. Overview

All calibration steps are performed using the LT front panel interface. The calibration values are

written to non-volatile memory where they are retained permanently. The number of calibration

steps required depends on the configuration of the unit.

Calibration accuracy is measured by certified test equipment connected externally, and the supply

enclosure does not have to be entered. All calibrations are performed by digitally scaling inputs

and outputs.

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 require less conversion of the meter reading, 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

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Dynatronix LT1200X SERIES Specifications Page 57