Instruction Manual - Davis Instruments
Contents
1. 0 89 to 0 91 0 93 to 0 96 Emissivity j Material under test 0 90 to 0 98 0 94 0 96 0 90 0 92 to 0 96 0 92 to 0 96 0 96 to 0 98 Cloth black Skin human Leather Charcoal powder Lacquer Lacquer matt Rubber black Plastic Timber Paper Chromium Oxides Copper Oxides Iron Oxides Textiles Emissivity 0 98 0 98 0 75 to 0 80 0 96 0 80 to 0 95 0 97 0 94 0 85 to 0 95 0 90 0 70 to 0 94 0 81 0 78 0 78 to 0 82 0 90 42512 EU V7 1 02 09 Specifications 50 to 1000 C 58 to 1832 F 50 C to 23 C 58 F to 10 F 7 C 14 F Typical 23 C to 2 C 10 F to 28 F 4 C 8 F 2 C to 94 C 28 F to 200 F 2 5 C 4 5 F 94 C to 204 C 200 F to 400 F 1 0 rdg 1 C 2 F 204 C to 426 C 400 F to 800 F 1 5 rdg 1 C 2 F 426 C to 1000 C 800 F to 1832 F 3 rdg 1 C 2 F Note Accuracy is specified for the following ambient temperature range 23 to 25 C 73 to 77 F 0 10 to 1 00 adjustable Field of View D S Approx 30 1 ratio D distance S spot or target Dual Class 2 laser lt 1mW power Wavelength is 630 to 670nm IR Spectral response 8 to 14 um wavelength Repeatability 0 5 of reading or 1 C 1 8 F whichever is greater General Specifications Display Response time Over range indication Operating Temperature Operating Humidity Storage Temperature Power Supply Automatic Power Of2. on condition until i changed 37 5cm la 15 1 25cm 0 5 ae 4 42512 EU V7 1 02 09 MAX maximum temperature display The highest reading encountered during a single measurement scan is displayed in the MAX display Backlight 1 Press and release the Trigger 2 While HOLD is on the display press the backlight button once to turn on the backlight on or off 3 The backlight will illuminate in the LCD when the feature is enabled The status of the backlight will be stored in memory and will remain as the turn on condition until changed 5 Note The backlight will shorten the battery life Only use this feature when required The MODE button options The MODE button is used to access the Emissivity Lock High alarm and Low alarm features of the instrument 1 Press and release the Trigger 2 While HOLD is on the display press the MODE button to step through and program the following features A blinking icon indicates the feature is selected amp Emissivity Value Press the A or W buttons to change the emissivity value Lock mode On Off Press the A or W buttons to turn the lock feature ON or OFF tH High Alarm On Off Press the A or W buttons to turn the High Alarm feature ON or OFF teH High Alarm setting Press the A or W buttons to set the high alarm limit value in the main display L Low Alarm On Off Press the A or W buttons to turn the High Alarm f
3. the target must be greater than 2 5cm Other distances are shown in the field of view diagram Measurements should normally be made as close as possible to the device under test The meter can measure from moderate distances but the measurement may be affected by external sources of light In addition the spot size may be so large that it encompasses surface areas not intended to be measured 7 42512 EU V7 1 02 09 Emissivity and IR Measurement Theory IR Thermometers measure the surface temperature of an object The thermometer s optics sense emitted reflected and transmitted energy The thermometer s electronics translate the information into a temperature reading which is then displayed on the LCD The amount of IR energy emitted by an object is proportional to an object s temperature and its ability to emit energy This ability is known as emissivity and is based upon the material of the object and its surface finish Emissivity values range from 0 1 for a very reflective object to 1 00 for a flat black finish For the Model 42515 the emissivity is adjustable from 0 1 to 1 00 Most organic materials and painted or oxidized surfaces have an emissivity factor of 0 95 When in doubt set the emissivity to 0 95 Emissivity Factors for Common Materials Material under test Asphalt Concrete Cement Sand Soil Water Ice Snow Glass Ceramic Marble Plaster Mortar Brick 0 83 0 90 to 0 95 0 90 to 0 94 0 94 0 80 to 0 90
4. User Manual EXTECH WURA INSTRUMENTS A FLIR COMPANY Dual Laser InfraRed IR Thermometer MODEL 42512 Introduction Congratulations on your purchase of the Model 42512 IR Thermometer This Infrared thermometer measures and displays non contact temperature readings up to 1832 F 1000 C At 30 built in dual lasers converge to 1 target spot to insure accurate targeting and temperature measurement The adjustable emissivity feature allows the IR thermometer to measure the temperature of virtually any surface Proper use and care of this meter will provide years of reliable service Safety e Use extreme caution when the laser pointer is on e Do not point the beam toward anyone s eye or allow C AU T p N the beam to strike the eye from a reflective surface LASER RADIATION j DO NOT STARE INTO BEAM e Do not use the laser near explosive gases or in other potentially explosive areas DIODE LASER 1 mW MAX OUTPUT at 635 670 nm CLASS II LASER PRODUCT 2 42512 EU V7 1 02 09 Meter Description oo oe IS Dual Laser pointers LCD Display Function Buttons Measurement Trigger Battery and F C Switch compartment DISPLAY Se ee eS n ll O LJ w SCAN measurement in progress HOLD last measurement locked in display 123456 nooo ep ep ep Mez CF UE Laser pointer active Power locked ON High limit alarm Low limit alarm C or F tempera
5. eature ON or OFF Le Low Alarm setting Press the A or W buttons to set the Low alarm limit value in the main display 5 42512 EU V7 1 02 09 High and Low Alarm Feature The meter has a programmable high and low alarm feature When either alarm point is reached the meter will alert the user via an audible beep and a blinking LCD display icon The alarm limit is set and the feature is enabled disabled using the MODE button The setting is stored and memory and will remain as the turn on condition until changed Temperature Units The temperature units can be set to F or C using the switch located in the battery compartment Lock feature The LOCK feature disables the Auto Power Off feature for the period of use when selected The feature is useful for long term temperature monitoring and hands free use The meter will revert to auto power off if the trigger is pressed during a locked scan Over range Indication If the temperature measurement exceeds the specified temperature range the thermometer will display dashes in place of a temperature reading Battery Replacement When the low battery symbol appears on the display replace the meter s battery 9V The battery compartment is located behind the panel that surrounds the meter s trigger Open the compartment by pulling the panel down from the trigger area Replace the 9V battery and close the battery compartment cover You as the end user are legally b
6. f Weight Dimensions Backlit LCD display with function indicators 150ms 0 C to 50 C 32 F to 122 F 10 to 90 RH operating lt 80 RH storage 10 to 60 C 14 to 140 F 9V battery 7 seconds with LOCK to disable 163g 5 7 oz 146 x 104 x 43mm 5 7 x 4 x 1 6 Copyright 2009 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form 9 42512 EU V7 1 02 09
7. ound 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 6 42512 EU V7 1 02 09 IR Measurement Notes 1 The object under test should be larger than the spot target size calculated by the field of view diagram printed on the side of the meter and in this guide Before measuring be sure to clean surfaces that are covered with frost oil grime etc If an object s surface is highly reflective apply masking tape or flat black paint to the surface before measuring Allow time for the paint or tape to adjust to the temperature of the surface it is covering Measurements through transparent surfaces such as glass may not be accurate Steam dust smoke etc can obscure measurements The meter automatically compensates for deviations in ambient temperature However it can take up to 30 minutes for the meter to adjust to extremely wide changes To find a hot spot aim the meter outside the area of interest then scan across in an up and down or side to side motion until the hot spot is located Field of View The meter s field of view is 30 1 For example if the meter is 75cm from the target spot the diameter of
8. ture units Main temperature display MAX Ty a LLL LILILI LI Low battery icon MAX icon Emissivity setting 13 12 11 Emissivity icon Max temperature display 3 42512 EU V7 1 02 09 Operating Instructions Temperature Measurements 1 2 Dual Laser Pointer The dual laser pointers are designed to cross ata Hold the meter by its handle and point it toward the surface to be measured Pull and hold the trigger to turn the meter on and begin testing The temperature reading MAX temperature reading the SCAN icon the emissivity value and the unit of measure will appear Release the Trigger and the reading will hold for approximately 7 seconds HOLD will appear on the LCD after which the meter will automatically shut off The only exception to this is if the LOCK mode is set to ON Note Select the temperature units F C using the switch inside the battery compartment eS Bea eee distance of 75cm The spot size at this distance is a 2 5cm diameter and this is the recommended distance 150cm to target for most measurements To turn the lasers on off 5cm 2 1 2 Press and release the Trigger While HOLD is on the display press the laser A button AN once to turn on the lasers on or off l li The laser icon A will appear in the LCD when the laser function is enabled 75cm 30 The status of the laser will be stored in memory 2 5cm 1 and will remain as the turn
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