User guide

Multi Process Meter Instruction Manual

Internal Source Calibration (ICAL)

The meter is factory calibrated prior to shipment

to read in milliamps and volts depending on the

input selection. The calibration equipment is

certified to NIST standards.

The use of calibrated signal sources is necessary to calibrate the

internal source of the meter. The meter’s internal source is what allows

the user to scale the meter without applying a signal.

Check calibration of the meter at least every 12 months. Each input

must be recalibrated separately.

Notes:

1. If meter is in operation and it is intended to

accept only one input type (e.g. 4-20 mA),

recalibration of other input is not necessary.

2. Allow the meter to warm up for at least

15 minutes before performing the internal

source calibration procedure.

The

Internal calibration menu is part of the Advanced Features menu.

1. Press and hold the Menu button for three seconds to access the

advanced features of the meter.

2. Press the Up

arrow button to scroll to the Internal calibration menu

(

ICAL) and press Enter.

3. The meter displays either current calibration (

C CAL) or voltage

calibration (

v CAL), according to the input setup. Press Enter to

start the calibration process.

Example of Internal Calibration for current input:

4. The meter displays low input current message (C lo). Apply the

low input signal and press Enter. The display flashes for a moment

while the meter is accepting the low input signal.

5. After the display stops flashing, a number is displayed with the

leftmost digit brighter than the rest. The bright digit is the active digit

that can be changed by pressing the Up

arrow button. Press the

Right

arrow button to move to the next digit.

6. Set the display value to correspond to the input signal being

calibrated, typically 4.000 mA.