User's Guide Pinless Moisture/Humidity Meter + IR Model MO290
Introduction Congratulations on your purchase of the Extech MO290 Pinless Moisture Meter with Patented Built-in IR Thermometer. 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.
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.
Operation Powering the meter 1. Remove the RH sensor protective cap before use. 2. Press the power 3. If the button to turn the meter on. symbol appears or the meter does not turn on, replace the battery. Humidity (Dew point, GPP, g/kg) Measurements 1. Press the power 2. Press the RH button button to turn the meter on. 3. Relative Humidity will be displayed in the primary display and the temperature will be displayed in the secondary display. 4.
Infrared Temperature Measurements 1. Press the power button to turn the meter on. 2. Press the IRT button to enable the IR thermometer and the laser pointer. The laser pointer icon will flash while the mode is active. 3. Press the up or down arrow button to change the temperature units 4. Aim the laser pointer at the surface to be measured and read the surface temperature in the secondary display. 5. Release the IRT button.
Condensation Mode The Condensation feature alerts the used when the surface temperature as measured by the IR thermometer is close to or has reached the Dew Point temperature. 1. 2. 3. 4. 5. button to turn the meter on. Press the power Simultaneously press the MOIST/REL and RH buttons. The “COND” icon will appear. Point the meter at a surface, press the IRT button to measure the surface temperature.
Auto Power Off The meter will enter a sleep mode after 30 minutes of inactivity. The meter will emit a warning beep 15 seconds before shutting down. To disable the APO feature, press the MODE button when turning the meter ON. The “APO” icon will not appear, indicating it is disabled. Specifications Function Range Accuracy Pinless Moisture 0 to 99.9 Relative only Ext. Pin Moisture 0 to 99.9 Relative only Pinless Depth Up to 0.75” (19mm) RH Measurement 0 to 10% ± 3%RH 11 to 90% ± 2.
Warranty EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information.
