User Guide Dual Moisture Meter Pro Pin / Pinless Moisture Meter with remote probe Model MO265
Introduction Congratulations on your purchase of the Extech MO265 Moisture Meter. The MO265 detects moisture in wood and other materials such as particle board, carpeting, and ceiling/bathroom tiles using the non-invasive method (pinless); the MO265 also measures moisture in sheet rock and other building materials using the pin method. The remote probe can also be used to make pin measurements. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
Description Meter Description 1. Electrode pins protective cap (pins underneath) 2. LCD display 3. Tri-color Bargraph 4. HOLD / POWER key 5. Protective cap attachment 6. Protective cap holders 7. MODE button 8. Remote probe connector plug 9. Remote Probe 10.
Operation Electrode Pins CAUTION: The electrode measurement pins are extremely sharp. Use care when handling this instrument. Cover the pins with the protective cap when the instrument is not in use. The electrode pins are replaceable. To insert or replace the pins refer to the illustration and instructions below. Replacement pins are stored in the battery compartment at the rear of the meter. a) Remove the protective cap at the top of the meter by pushing it toward the back of the meter.
Pinless Measurements 1. Ensure that the protective cap is attached to the meter covering the pins. 2. Press the 3. Press the MODE key to select the Relative (REL) mode of operation. 4. The pinless moisture detector is located at the rear of the instrument, just behind the display. Place the meter so that the sensor is touching the surface of the material under test. 5. Take several readings in several locations on the material for the best representation of the amount of moisture present. 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.
LCD Backlight ON/OFF With the meter switched ON, pressing and holding both front panel buttons (MODE and HOLD) switches the LCD backlight ON and OFF. Data Hold feature The Data Hold function freezes the reading in the display. Press the HOLD key momentarily to activate the Data Hold function. The reading will freezee and the ‘key’ display icon will appear. Press the HOLD key again to exit the Data Hold function (the ‘key’ display icon will switch off).
Battery Replacement If the instrument does not switch ON or displays the low battery symbol, replace the battery as follows: 1. 2. 3. 4.
