Dual Laser InfraRed (IR) Thermometer
Contents
1. Material under test Emissivity Material under test Emissivity Asphalt 0 90 to 0 98 Cloth black 0 98 Concrete 0 94 Skin human 0 98 Cement 0 96 Leather 0 75 to 0 80 Sand 0 90 Charcoal powder 0 96 Soil 0 92 to 0 96 Lacquer 0 80 to 0 95 Water 0 92 to 0 96 Lacquer matt 0 97 Ice 0 96 to 0 98 Rubber black 0 94 Snow 0 83 Plastic 0 85 to 0 95 Glass 0 90 to 0 95 Timber 0 90 Ceramic 0 90 to 0 94 Paper 0 70 to 0 94 Marble 0 94 Chromium Oxides 0 81 Plaster 0 80 to 0 90 Copper Oxides 0 78 Mortar 0 89 to 0 91 Iron Oxides 0 78 to 0 82 Brick 0 93 to 0 96 Textiles 0 90 7 42511 EU v4 4 07 13 Specifications 50 to 600 C 58 to 1100 F Accuracy 50 C to 2 C 58 F to 28 F 4 C 9 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 600 C 800 F to 1100 F 4 rdg 1 C 2 F Note Accuracy is specified for the following ambient temperature range 23 to 25 C 73 to 77 F D S Approx 12 1 ratio D distance S de or target 0 5 of reading or 1 C 1 8 F whichever is greater General Specifications Display Backlit LCD display with function indicators Response time 150ms Over range indication 5 Operating Temperature 0 C to 50 C 32 F to 122 F Operating Humidity 10 to 90 RH operating lt 80 RH storage Storage Temperature 10 to 62. 2 5cm in diameter l and this is the recommended distance to target for most 3 75cm l d 1 5 measurements To turn the lasers on off 1 Press and release the Trigger i 2 While HOLD is on the display press the laser button A once 1I to turn on the lasers on or off 30cm 12 3 The laser icon will appear in the LCD when the laser 2 5cm l 1 function is enabled 4 The status of the laser will be stored in memory and will I remain as the ON condition until changed I 150mm 6 12 5mm kK 0 5 l l l l l 4 42511 EU v4 4 07 13 MAX maximum temperature display The highest reading encountered during a single measurement scan is displayed in the MAX display field Backlight 1 Press and release the trigger 2 While HOLD is on the display press the backlight button v once to turn on the backlight on or off The backlight will illuminate in the LCD when the feature is enabled 4 The status of the backlight will be stored in memory and will remain as the ON condition until changed 5 Note Use this feature sparingly and only as needed since the backlight puts an extra strain on the battery The MODE button options The MODE button is used to access the Test Lock High alarm Low alarm and Emissivity adjustment 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 featur
3. icon Max temperature display SCAN O A g te noi MAX 13 12 11 42511 EU v4 4 07 13 Operating Instructions Temperature Measurements 1 Hold the meter by its handle and point it toward the surface to be measured 2 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 3 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 is if the LOCK mode is set to ON Note Select the temperature units F C using the switch inside the battery compartment Field of View The meter s field of view is 12 1 For example if the meter is 30cm from the target spot the diameter of the target must greater than 2 5cm Other distances are shown in the field of view diagram illustrated below and on the side of the meter Measurements should normally be made as close to 30cm as possible to the device under test The meter can measure from greater 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 m e n om Dual Laser Pointer The dual laser pointers are designed to cross at a distance of 12 30cm The spot size at this distance is 1
4. 0 C 14 to 140 F Power Supply 9V battery Automatic Power Off 7 seconds with LOCK to disable Weight 163g 5 7 oz Dimensions 146 x 104 x 43mm 5 7 x 4 x 1 6 Copyright 2013 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 8 42511 EU v4 4 07 13
5. EX E i User s Manual INSTRUMENTS Dual Laser InfraRed IR Thermometer MODEL 42511 Introduction Congratulations on your purchase of the Model 42511 IR Thermometer This Infrared thermometer measures and displays non contact temperature readings up to 600 C 1100 F At 12 the 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 CAU T 0 N the beam to strike the eye from a reflective surface LASER RADIATION 5 DO NOT STARE INTO BEAM e Do not use the laser near explosive gases or in other potentially explosive areas ER price CLASS II LASER PRODUCT 2 42511 EU v4 4 07 13 Meter Description Oo ONS Dual Laser pointers LCD Display Function Buttons Measurement Trigger Battery and F C Switch compartment DISPLAY OO oN DOT PO Ns 11 12 13 SCAN measurement in progress HOLD last measurement locked in display Laser pointer active Power locked ON High limit alarm Low limit alarm C or F temperature units Main temperature display Low battery icon MAX icon Emissivity setting Emissivity
6. ain 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 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 i appears on the display replace the meter s battery 9V The battery compartment is located behind the that surrounds the meter s trigger Open the compartment by pulling the down from the trigger area Replace the 9V battery and close the compartment cover 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 6 42511 EU v4 4 07 13 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 sur
7. es A blinking icon indicates the feature is selected amp Emissivity Value Press the A or W button to change the emissivity value Test Lock mode On Off Press the A or V button to turn the lock feature ON or OFF eH High Alarm On Off Press the A or Y button to turn the High Alarm feature ON or OFF eH High Alarm setting Press the A or Y button to set the high alarm limit value in the main display Len Low Alarm On Off Press the A or V button to turn the High Alarm feature ON or OFF L Low Alarm setting Press the A or V button to set the Low alarm limit value in the main display 5 42511 EU v4 4 07 13 Emissivity Adjust The adjustable emissivity feature allows the user to measure many surface colors finishes and textures A separate section is provided later in this guide that covers emissivity in greater detail Test Lock feature The Test 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 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 rem
8. face 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 7 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 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 42511 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
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