Extech Instruments MO265 User Manual

MO265-EU-EN-V1.0-10/10
6
Calibration Zero for Pinless Mode
1. Switch the meter to the Pinless mode of operation (REL mode).
2. Ensure that the meter is not near any objects or surfaces. Hold the meter near the
bottom to avoid contact with the pinless sensor.
3. Press and Hold the MODE button for 3 seconds until rEL appears in the display.
Release the MODE button and the display will blink for several seconds and then
switch back to the normal display mode.
4. The display should now read zero indicating that the calibration is complete.
5. If an E32 error is displayed, try the zero calibration again with the pins further away
from any objects or surfaces.
Calibration Check for Pin Mode
1. Switch the meter to the Pin mode (%WME).
2. The two calibration check points are located in the holes at the top of the protective
cap.
3. Insert the electrode pins into the two holes at the top of the protective cap to make
contact with the test circuit.
4. The display should read between 17.5 to 18.5 %WME, indicating that the
calibration is verified.

Extech Instruments MO265 Specifications

Display

display resolution	0.1%
display type	Backlit LCD digital display and tri-color LED bargraph scale

Measurement Specifications

accuracy pin mode	± (5% rdg + 5 digits)
measurement principle	Electrical resistance (pins), Electromagnetic sensor (pinless)
range pinless	0.0 to 99.9 %Relative
range pins	6.0 to 94.8 %WME

Power

power supply	9V alkaline battery
low battery indication	Battery symbol displayed on LCD

Operating Environment

operating temperature	0 to 50[o]C (32 to 122[o]F)
operating humidity	80% Relative Humidity maximum

Weight and Dimensions

dimensions	203 x 58 x 43mm (8 x 2.3 x 1.7”)
weight	204g. (7.2 oz)