User Guide Dual Moisture Meter Pin / Pinless Moisture Meter Model MO260
Introduction Congratulations on your purchase of the Extech MO260 Moisture Meter. The MO260 detects moisture in wood and other materials such as particle board, carpeting, and ceiling/bathroom tiles using the non-invasive method (pinless); the MO260 also measures moisture in sheet rock and other building materials using the pin method. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Features %WME (wood moisture equivalent) pin moisture reading Relative (REL) pinless moisture reading for non-invasive measurement Digital LCD readout with backlighting feature and tri-color LED bargraph Quickly indicates the moisture content of materials Pinless measurement depth to 0.75" (22mm) below the surface Electro-magnetic sensing technology for pinless operation Built-in calibration check and calibration zero Replaceable measurement electrode pins Low battery indication Cap protects pins during storage Cap can be snapped onto the side of the housing during use Complete with 9V battery, replacement pins, protective cap, and pouch case 2 MO260-EN V1.3 05/12
Description Meter Description 1. Electrode pins protective cap 2. LCD display 3. Tri-color Bargraph 4. HOLD / POWER key 5. Protective cap attachment 6. Protective cap holders 7. MODE button Notes: Battery/Spare Pin compartment located on the rear of the instrument Electrode pins located beneath the protective cap Calibration points located at the top of protective cap LCD Display Description 1. Measurement reading 2. Battery status 3. Audible alert icon 4. Measurement mode 5. Display HOLD icon Bargraph Display Description The bargraph indicates WET / DRY measurements using three LED colors: Green (for dry), Amber (for moderate moisture), and Red (for very moist). As the reading moves up the bargraph scale from the DRY indicator to the WET indicator, the LED color changes from green, to amber, and then to red. 3 MO260-EN V1.3 05/12
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 / removeable and must be inserted before the meter can be used. 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. b) To remove the pins, loosen the locknut at the base of the electrode pins c) Install the new pins and tighten the locknuts d) Replace the protective cap 1. Electrode pins 2. Locking nuts 3. Threaded posts 4. Electrode jacks at top of meter 1 2 3 4 Basic Operation for Pin Measurments 1. Remove the protective cap to expose the electrode pins. The cap snaps off easily if it is pushed towards the rear of the meter. The cap can be affixed to the side of the meter using the protective cap holders (6). 2. Press the key to turn the meter ON / OFF. 3. Press the MODE key to select the Wood Moisture Equivalent (%WME) mode of operation. 4. Carefully push the electrode pins a minimum of 0.07 (2mm) into the material under test. Note that the pins should be inserted into wood perpendicular to the wood s fiber structure. For high moisture readings, it may take several minutes for the meter reading to stabilize. 5. Take several readings in several locations on the material for the best representation of the amount of moisture present. 6. Read the measurement values on the LCD digital display and the LED bar graph 7. Replace the protective cap when finished. 4 MO260-EN V1.3 05/12
Basic Operation for Pinless Measurments 1. Ensure that the protective cap is attached to the meter covering the pins. 2. Press the key to turn the meter ON. 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. Read the measurement values on the LCD digital display and the LED bar graph. 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 now read from 18.0 to 18.6, indicating that the calibration is verified. If the reading is not correct, return the meter for service. 5 MO260-EN V1.3 05/12
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 freeze 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). Meter Setup To enter the setup mode: With the meter switched OFF, press and hold both front panel buttons (MODE and HOLD buttons) simultaneously for two seconds. The display should now read 0 = x where 0 is the OPTION and x is the SETTING. Use the MODE (right arrow) button to change the SETTING. Use the HOLD button to scroll through the OPTIONS. The available OPTIONS and SETTINGS: OPTIONS SETTINGS SET-UP INFORMATION 0 0 Switches all settings to 0 (Factory Default*) 1 Others settings can now be changed. In addition, Backlight switches ON for 30 seconds and then automatically switches OFF. 1 0 Audible alert beeps with increasing frequency from a nominal 17.0 (REL) or 17% (WME) measurement value upwards 1 Audible alert divided into 3 frequency levels 2 Audible alert beeps when user switches from one mode to another 3 Beeper OFF. Audio alert display symbol switches OFF 2 0 Auto Switch OFF is not active. User must manually switch the unit OFF 1 Auto Switch OFF active. Switches OFF after 3 minutes 2 Auto Switch OFF active. Switches OFF after 5 minutes 3 Auto Switch OFF active. Switches OFF after 10 minutes 3 0 Backlight OFF 1 Backlight ON *FACTORY DEFAULT SETTINGS: 0=0, 1=0, 2=0, 3=0 6 MO260-EN V1.3 05/12
Battery Replacement If the instrument does not switch ON or displays the low battery symbol, replace the battery as follows: 1. Slide off the rear battery compartment cover 2. Replace the 9V battery 3. Secure the battery compartment 4. You, as the end user, are legally bound (EU Battery ordinance) to return all used batteries, disposal in the household garbage is prohibited! You can hand over your used batteries / accumulators at collection points in your community or wherever batteries / accumulators are sold! Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Maintenance Always keep the instrument dry To clean, wipe the meter with a damp cloth. Use a mild detergent if necessary but never use abrasives or solvents. Prevent dirt from accumulating at the electrode pins Specifications Display Resolution 0.1% Accuracy Measurement principle Range Backlit LCD digital display and tri-color LED bargraph scale Pin mode: ± (5% rdg + 5 digits) Pinless mode is a relative reading only Electrical resistance (pins) Electromagnetic sensor (pinless) 0.0 to 99.9 %Relative (pinless) 6.0 to 94.8 %WME (pins) Electrode pin length 11mm (0.44 ) Electrode pin type Power supply Low Battery Indication Meter housing Integrated, replaceable 9V alkaline battery Battery symbol displayed on LCD Impact-proof plastic Operating Temperature 32 to 122 o F (0 to 50 o C) Operating Humidity Dimensions Weight 80% Relative Humidity maximum 8 x 2.3 x 1.7 (203 x 58 x 43mm) 7.2 oz (204g) Product specifications subject to change without notice www.extech.com 7 MO260-EN V1.3 05/12
User's Guide Precision Hygro-Thermometer Model RH490
Introduction Congratulations on your purchase of the Extech RH490 Precision Hygro- Thermometer. This device measures Humidity, Air Temperature, Dew Point temperature, Wet Bulb temperature and Grains of Water Vapor Per Pound of Air. Advanced features include Data Hold, Auto Power Off, and MAX/MIN reading. This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service. Meter Description 1. Copyright 2006 Extech Instruments Corporation 2. Reservados todos los derechos, incluyendo el derecho de reproducción total o parcial en cualquier medio. 3. Humidity & Temperature Sensor 1 4. LCD Display 5. Power ON/OFF button 6. F/ C/WBT (wet bulb)/dew Point button 7. Hold/MIN-MAX button 8. %RH, GPP, g/kg, Backlight button Note: The battery compartment is located on the rear of the instrument 2 3 6 5 4 Display Description 1. Relative Humidity % 2. Dew Point 3. Wet Bulb 4. C/ F 5. Temp/WB/DP Display 6. Maximum 7. Minimum 8. Low Battery 9. Hold 10. RH% Display 11. Auto Off 12. Grains per pound 2 RH490-EU V2.0 12/06
Operation Power Press the power button to turn power on or off. %RH 1. To select %RH measurement, press the %RH/GPP/g/Kg button. 2. Hold the probe in the area to be tested. 3. Allow adequate time for readings to stabilize. 4. The Relative Humidity measurement appears in the top display. 5. Pressing the F/ C/WBT/Dew Point button toggles the lower display between Temperature ( F), Temperature ( C), Dew Point ( C), Dew Point ( F), Wet Bulb ( C) and Wet Bulb ( F). Mixing Ratio (Grains Per Pound or Grams Per Kilograms) 1. To select GPP or g/kg measurement, press the %RH/GPP/g/Kg button. 2. Hold the probe in the area to be tested. 3. Allow adequate time for readings to stabilize. 4. The GPP or g/kg measurement appears in the top display. 5. Pressing the F/ C/WBT/Dew Point button toggles the lower display between Temperature ( F), Temperature ( C), Dew Point ( C), Dew Point ( F), Wet Bulb ( C) and Wet Bulb ( F). 3 RH490-EU V2.0 12/06
Dew Point 1. To select the Dew Point measurement, press the F/ C/WBT/Dew Point button until DEWPOINT ( F or C) appears in the lower right. 2. Dew Point temperature is now displayed. Wet Bulb 1. To select the Wet Bulb measurement, press the F/ C/WBT/Dew Point button until WET BULB ( F or C) appears in the lower right. 2. Wet Bulb temperature is now displayed. Temperature 1. To select the temperature measurement, press the F/ C/WBT/Dew Point button until C or F appears in the lower right. 2. Temperature is now displayed. Data Hold 1. Press the H MAX MIN button momentarily to freeze the displayed readings. HOLD will appear on the upper left-hand side of the display. 2. Press the H MAX MIN button three more times to return to normal operation. (Steps through MAX and MIN) 4 RH490-EU V2.0 12/06
Minimum (MIN) Maximum (MAX) Function The MIN/MAX mode allows the user to view only the lowest (MIN) or highest (MAX) readings. 1. Press the H MAX MIN button twice and MIN appears on the display. The LCD is now displaying the minimum value recorded in both the top and bottom display. The display will not change until a lower reading is registered. 2. Press the H MAX MIN button again and MAX appears on the display. The LCD is now displaying the maximum value recorded in both the top and bottom display. The display will not change until a higher reading is registered. 3. To exit the MIN/MAX mode, press the H MAX MIN button again. The MAX icon will disappear. Note: Max and Min values are recorded into memory while the meter is on. The values are erased when power is turned off. Backlight Press and hold the light button until the backlight turns on. To turn the backlight off, press and hold the light button until the backlight turns off. Automatic Power OFF The meter has a default setting that automatically shuts the meter off after 10 minutes (indicated by the symbol on the display). This battery saving feature can be disabled. To disable the auto power off function, press and hold the H MAX MIN hold button while powering on. The symbol will not appear when auto power off has been disabled. The meter will revert to the default auto-off mode when powered off. Maintenance Cleaning and storage 1. The meter should be cleaned with a damp cloth and mild detergent when necessary. Do not use solvents or abrasives. 2. Store the meter in an area with moderate temperature and humidity (refer to the operating and storage range in the specifications chart earlier in this manual). Battery Replacement When the battery becomes weak the battery symbol will appear on the LCD. Replace the 9 Volt battery by removing the Philips head screw holding the rear battery compartment cover to access the battery compartment. Ensure that the compartment cover is securely fastened when finished. You, as the end user, are legally bound (Battery ordinance) to return all used batteries and accumulators; disposal in the household garbage is prohibited! You can hand over your used batteries / accumulators at collection points in your community or wherever batteries / accumulators are sold! Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle 5 RH490-EU V2.0 12/06
Specifications Function Range and Resolution Accuracy Humidity 0.0 to 10.0%RH ±3%RH 10.0 to 90.0%RH ±2%RH 90.0 to 100.0%RH ±3%RH Temperature -22.0 to 3.9 o F -30.0 to -19.9 o C ±2.7 o F ±1.5 o C -20.0 to 70.0 o C -4.0 to 158.0 o F ±1 o C ±1.8 o F 70.1 to 100.0 o C 158.1 to 199.0 o F ±1.5 o C ±2.7 o F Wet Bulb 0 to 80 C (32 to 176 F) Dew Point -30 to 100 C (-22 to 199 F) Calculated from RH and air Mixing Ratio 0 to 1120 GPP (grains per pound) temperature measurements 0 to 160 g/kg (grams per kilogram) Display Dual LCD Response Time: <30 seconds (90% of final value in moving air) Operating Conditions 0 to 50 o C (32 to 122 o F); < 80% RH non-condensing Storage Conditions -40 to 85 o C (-40 to 185 o F); <99% RH non-condensing Power Supply 9 Volt battery Battery Life Approx. 24 hours Dimensions / Weight 200 x 45 x 33mm (7.8 x 1.7 x 1.3 ); 200g (7 oz.) Copyright 2009 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form. 6 RH490-EU V2.0 12/06