IDEAL INDUSTRIES 61-340 DC V Calibration Adjust VR1, AC V Calibration Adjust VR2 Model

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Calibration Procedure

Recalibrate your meter:

It is recommended that the multimeter be calibrated once each year.

1.Perform calibration at an ambient temperature of 23°C±2°C and a relative humidity of <70% Disconnect the test leads and turn the meter off. Remove the test leads from the front terminals.

2.Position the meter face down. Remove the battery cover screw and the 2 bottom case cover screws.

3.Lift the end of the bottom case cover until it gently unsnaps from the case top at the end nearest the LCD.

(A)DC V Calibration (Adjust VR1)

1. Set the rotary switch to position “ ” for the DC Volts function.

2. Set the output of DC calibrator for 300.0mV and connect to and COM input terminals on

meter.

3.Using a small flat-tipped screwdriver, adjust VR1 until the display reads 299.5 to 300.5mV

4.Disconnect the DC calibrator from the meter.

(B)AC V Calibration (Adjust VR2) Model 61-340:

1.	Set the rotary switch to position. “	” for the AC Volts function.
2.	Set the output of the calibrator for 3.000V at 60Hz and connect to		and COM input
	terminals on meter.

3.Using a small flat-tipped screwdriver, adjust VR2 until the display reads 2.995 to 3.005Volts

4.Disconnect the AC calibrator from the meter.

Model 61-342:
1.	Set the rotary switch to position. “	” and press SELECT button to	select AC A function,
	then press RANGE button to select	10A range .
2.	Using a small flat-tipped screwdriver, adjust VR4 until the display reads 0 to 3 digits.
3.	Press RANGE button to select 4A	range and adjust VR5 until the display reads same as the
	digits at AC 10A range ( 0 to 3 digits)
4.	Set the rotary switch to position. “	” for the AC Volts Function.
5.	Set the output of the calibrator for 3.000V at 60Hz. and connect to		and COM input
	terminals on meter.

Form Number TM61340-2 Rev 2 November 2007