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. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Meter Description 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. IR temperature sensor Laser pointer Humidity sensor Temperature sensor LCD display Relative Humidity button Mode/Zero Button IR thermometer button Alarm set button Alarm adjust down button ON/OFF power button Remote pin probe input jack (bottom) Battery compartment (rear) Alarm adjust up button Moisture/Relative button Protective cap 16 1 2 3 4 5 15 14 13 12 6 7 8 9 10 11 LCD Display 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. MIN MAX – Minimum and maximum value HIGH LOW – Alarm limits INT EXT – Internal/External probe mBar – Vapor pressure kPa – Vapor pressure GPP – Grains per Pound g/kg – Grains per kilogram MOIST – Moisture mode RH% - Relative Humidity mode COND – Condensation mode APO – Auto power off DEW – Dew Point temperature C/F – Temperature units - Low battery - Laser pointer On 2 MO290-en-GB_V3.6 4/15 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 Cautions This device is not a toy and must not reach children’s hands. It contains hazardous objects as well as small parts that the children could swallow. In case a child swallows any of them, please contact a physician immediately Do not leave the battery and packing material lying around unattended; they can be dangerous for children if they use them as toys In case the device is going to be unused for an extended period of time, remove the battery to prevent them from draining Expired or damaged batteries can cause cauterization on contact with the skin. Always, therefore, use suitable hand gloves in such cases See that the battery is not short-circuited. Do not throw the battery into a fire. 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. Never dispose of used batteries or rechargeable batteries in household waste. As consumers, users are legally required to take used batteries to appropriate collection sites, the retail store where the batteries were purchased, or wherever batteries are sold. Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end‐ of‐life devices to a designated collection point for the disposal of electrical and electronic equipment. Other Battery Safety Reminders o Never dispose of batteries in a fire. Batteries may explode or leak. o Never mix battery types. Always install new batteries of the same type. 3 MO290-en-GB_V3.6 4/15 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. Press the up or down arrow button to change the temperature units. 5. Press the MODE button to display the DEW point. 6. Press the MODE button to display GPP (°F) or g/kg (°C) Pinless Moisture Measurements 1. Press the power 2. Press the MOIST button to select Moisture measurement.” MOIST” and “INT” (internal pinless sensor) will appear in the display. button to turn the meter on. 3. Hold the meter so that the rear sensor is away from any surface or your hand. The reading should be near 0.0. If not, press and hold the ZERO button for more than 2 second and the ZERO icon appears. 4. Place the rear sensor on the surface of the material to be tested and read the relative moisture content. Pin Type Moisture Measurements 1. Connect the external pin probe to the jack on the bottom of the meter. 2. Press the power 3. Press the MOIST button twice to select Moisture measurement.” MOIST” and “EXT” (external pin probe) will appear in the display. 4. Press the probe pins into the material and read the % moisture content in the display. button to turn the meter on. 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. 4 MO290-en-GB_V3.6 4/15 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. Aim the laser pointer at the surface to be measured and read the surface temperature in the secondary display. 4. Release the IRT button. The last temperature measured and the laser icon will remain on the display for approximately 10 seconds before returning to ambient temperature measurement. IRT MAX MIN display: The meter can be set to display only the maximum or minimum temperature measured during an IR scan. 1. With the meter in the IR hold mode, press the MODE button. “MIN” will appear in the display. 2. Press the IRT button to enable the IR thermometer. The meter will display the minimum temperature measured and will update only when a lower temperature is measured. 3. Press the MODE button twice to enable the MAX mode and proceed as stated above for the maximum temperature. 4. The MAX or MIN temperature is not stored when the function is exited. IR Field of View Ensure that the desired target is larger than the spot size. As the distance from an object increases, the spot size of the area measured by the meter becomes larger. The meter’s field of view ratio is 8:1, meaning that if the meter is 8 inches (cm) from the target, the diameter (spot) of the object under test must be at least 1 inch (cm). Refer below to the field of view diagram. 2” 1” 20mm @ 16” @ 8” @ 160mm 40mm @ 320mm WARNING: Do not directly view or direct the laser pointer at an eye. Low power visible lasers do not normally present a hazard, but may present some potential for hazard if viewed directly for extended periods of time. 5 MO290-en-GB_V3.6 4/15 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. Press the power button to turn the meter on. 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. The small display will indicate the IR surface temperature and the large display will indicate the difference between the IR temperature and the Dew Point temperature. The meter will then report the potential for condensation on that surface in the following manner If the temperature of the IRT is more than 14°C (25°F) above the Dew Point, the temperature difference shall be displayed, with no other warning. If the temperature of the IRT is 3-14°C (5-25°F) above the Dew Point, the temperature difference shall be displayed, along with a standard Condensation Indicator icon. The meter shall beep once to confirm that the reading is in the risk area. If the temperature of the IRT is less than 3°C (5°F) above the Dew Point, the temperature difference shall be displayed, along with a flashing Condensation Indicator icon. The meter shall beep twice to confirm that the reading is in the high-risk area. Press the RH button to exit the mode. Vapor Pressure Mode 1. 2. With the Condensation mode active, press the MODE button to display the Vapor Pressure in mBAR (°F) or kPa (°C). Press the MODE button to exit the Vapor Pressure mode. Alarm High and Low Limit Setting High and Low alarm points can be set for Humidity and Moisture measurements. Humidity Alarm Set Procedure: 1. With RH% displayed, simultaneously press the RH and MODE buttons. 2. The “HIGH” icon will appear on the display. 3. Press the ▲or ▼button to set the high limit desired. 4. Press the ALARM SET button to save the value and proceed to the LOW set value. 5. With the “LOW” icon in the display, Press the ▲or ▼button to set the low limit desired. 6. Press the ALARM SET button to save the value and to return to the normal mode. 7. If the humidity measurement is lower than the low alarm setting or higher than the high alarm setting, the meter will beep once every second. Moisture Alarm Set Procedure: 1. With MOIST displayed, simultaneously press the MOIST/REL and MODE buttons. 2. The “HIGH” icon will appear on the display. 3. Press the ▲or ▼button to set the high limit desired. 4. Press the ALARM SET button to save the value and proceed to the LOW set value. 5. With the “LOW” icon in the display, Press the ▲or ▼button to set the low limit desired. 6. Press the ALARM SET button to save the value and to return to the normal mode. 7. If the moisture measurement is higher than the LOW alarm setting, the meter will beep once every second 8. If the moisture measurement is higher than the HIGH alarm setting, the meter will beep continuously. Change Temperature units from F to C or C to F 1. 2. 3. Press the power button to turn the meter on. Press the IRT button to turn on the IR thermometer and then release the button. Press the ▲or ▼button to set the desired temperature unit 6 MO290-en-GB_V3.6 4/15 Specifications Function Range Accuracy Pinless Moisture 0 to 99.9 Relative only External - Moisture in wood 6-99 % ± 5% External - Moisture in building materials 13-99 % ± 5% Pinless Depth Up to 0.75” (19mm) RH Measurement 0 to 10% ± 3%RH 11 to 90% ± 2.5%RH 91 to 100% ± 3%RH Air Temperature -20 to 170°F (-29 to 77°C) 3.6F (2.0C) IR Temp -4 to 31F 9F 32°F ± 2°F 33 to 392F Greater of 3.5% or 9F -20 to-1C 4.5C 0C 1C 1 to 200C Greater of ±3.5% or ± 4.5°C Display Vapor Pressure Dew Point Mixing Ratio Sample Rate Backlight Operating Temperature Storage Temperature Operating Humidity Storage Humidity Power Supply Battery Life Auto Power Off (APO) APO Quiescent Current Dimensions Weight 3-digit primary display, 4-digit secondary display 0 to 20.0kPA -30 to 100°C (-22 to 199°F) 0-999GPP (0 to 160g/kg) 2 per second White LED 4 to 43°C (40 to 110°F) -30 to 60°C (-14 to 140°F) 90%, 0-30°C (32-86°F), 75%, 30-40°C (86-104°F), 45%, 40-50°C (104-122°F) 90% 9V battery 6-8 weeks (4 hrs/day use), using alkaline batteries After 30 minutes (nominal) inactivity. The APO function can be disabled by the user. 50µA maximum 165x70x38mm (6.5x2.8x1.5’) 210g (7.4oz) Copyright © 2014‐2015 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form ISO‐9001 Certified www.extech.com 7 MO290-en-GB_V3.6 4/15