User's Guide
Pinless Moisture/Humidity Meter with
Memory + IR Thermometer
Model MO295
Introduction
Congratulations on your purchase of the Extech MO295 Pinless Moisture Meter with
Patented Built-in IR Thermometer and 20 Point Memory. Monitor moisture in wood and other
building materials with no surface damage with the Pinless Moisture sensor (Pin-type
Moisture Probe included). Measure Humidity and Air Temperature with built-in probe plus
non-contact InfraRed Temperature with patented IR design. Advanced functions provide
Grains per Pound, Dew Point and Vapor Pressure calculations. This meter is shipped fully
tested and calibrated and, with proper use, will provide years of reliable service.
Meter Description
1. IR temperature sensor
2. Laser pointer
3. Humidity sensor
4. Temperature sensor
5. LCD display
6. Relative Humidity button
7. Mode/Zero Button
8. IR thermometer button
9. Alarm set button
10. Alarm adjust down button
11. ON/OFF power button
12. Remote pin probe input jack (bottom)
13. Battery compartment (rear)
14. Alarm adjust up button
15. Moisture/Relative button
16. Protective cap
LCD Display
1. MIN MAX – Minimum and maximum value
2. HIGH LOW – Alarm limits
3. INT EXT – Internal/External probe
4. mBar – Vapor pressure
5. kPa – Vapor pressure
6. GPP – Grains per Pound
7. g/kg – Grains per kilogram
8. MOIST – Moisture mode
9. RH% - Relative Humidity mode
10. COND – Condensation mode
11. APO – Auto power off
12. DEW – Dew Point temperature
13. C/F – Temperature units
14.
- Low battery
15. MEM - Memory location indicator
16.
- Laser pointer On
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Safety
• Use extreme caution when the laser pointer beam is on
• Do not point the beam toward anyone's eye or allow the
beam to strike the eye from a reflective surface
• Do not use the laser near explosive gases or in other
potentially explosive areas
Features
• Quickly indicates the moisture content of materials with Pinless technology without
damaging the surface;
• Optional remote Pin-type probe (MO290-P) allows for moisture readings at different
penetration levels (3ft/0.9m cable length);
• Easy to read, large dual display with backlit feature;
• Simultaneously displays % moisture of wood or material being tested and Air
Temperature, IR Temperature, or Humidity
• Designed with patented IR design to measure non-contact surface temperature; 8:1
distance to spot ratio with 0.95 fixed emissivity
• Built-in Humidity/Temperature probe measures Relative Humidity,
• Air Temperature plus Grains Per Pound (GPP) and Dew Point (DP)
• Ambient and Surface Vapor Pressure
• Automatic calculation of differential Temperature (IR - DP)
• Min/Max and Data Hold
• 20 point internal memory
• Auto power off and low battery indication
Battery Replacement
1. Turn off the meter.
2. Remove one Philips head screw and lift off the rear battery cover.
3. Replace the 9V battery.
4. Secure the rear battery cover.
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