High Temperature InfraRed Thermometer
Contents
1. In the AVG mode all of the readings in the current measurement session are averaged and the value is displayed HAL High Alarm setting The temperature that when exceeded causes the audible visual alarm to trip LAL Low Alarm setting The temperature that when exceeded high to low causes the audible visual alarm to trip Battery Replacement When the battery symbol _ empty or close to empty replace the meter s 9V battery The battery compartment is located behind the panel that surrounds the meter s trigger The panel can be pried open near the trigger and folded down as shown in the diagram Replace the 9V battery and close the battery 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 4 42545A en GB_V4 4_ 12 14 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 t2. User s Manual EXTECH INSTRUMENTS High Temperature InfraRed Thermometer with Laser Pointer MODEL 42545 Introduction Congratulations on your purchase of the Model 42545 IR Thermometer The 42545 is capable of non contact infrared temperature measurements at the touch of a button The built in laser pointer increases target accuracy while the backlit LCD and handy push buttons combine for convenient ergonomic operation This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service 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 CA UTI T N strike the eye from a reflective surface LASER RADIATION DO NOT STARE INTO BEAM Do not use the laser near explosive gases or in other potentially DIODE LASER explosive areas lt 1mW Output at 675nm CLASS II LASER PRODUCT Meter Description 1 9 10 Alarm ON OFF Switch Note There is a tripod mount on the bottom of the handle o N Oa PF WN Laser pointer beam IR Sensor Measurement Trigger Battery and Switch Compartment LCD Display Push buttons Handle Grip Temperature Units C F Switch Test Lock ON OFF Switch 10 2 42545A en GB_V4 4 12 14 Operating Instructions Basic IR Measurements 1 2 Hold the meter by its handle and point it toward the surface to be measured Pull and hold the trigge
3. ading 9 F 4 C lt 30 F 1 C of reading 2 of reading 4 F 2 C 30 F to 800 F 1 C to 426 C 2 5 of reading 6 F 3 C 800 to 1000 F 426 to 537 C 3 of reading 9 F 4 C gt 1000 F 537 C Note Accuracy is specified for the following ambient temperature range 18 to 28 C 64 to 82 F Emissivity Adjustable from 0 1 to 1 00 0 95 default value Field of View D S Approx 50 1 ratio D distance S spot Laser power Less than 1mW Class II Spectral response 8 to 14 um wavelength General Specifications Display 4 2 digit backlit LCD display with function indicators Display rate 1 second approx Operating Temperature 0 C to 50 C 32 F to 122 F Operating Humidity Max 90 RH Power Supply 9V battery Automatic Power Off Approx 7 seconds after the trigger is released Safety compliance CE Weight 290g 10 2 oz Dimensions 100 x 56 x 230mm 3 9 x 2 2 x 9 0 Copyright 2014 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 7 42545A en GB_V4 4 12 14
4. ape 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 6 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 motion until the hot spot is located Field of View The meter s field of view is 50 1 For example if the meter is 50 inches from the target spot the diameter of the target must be at least 1 inch Other distances are shown in the field of view diagram Note that 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 Diameter of object 25 36 50 400 0 64m 0 91m 1 27m 2 54m Distance to object 5 42545A en GB_V4 4 12 14 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 t
5. displayed Use the UP and DOWN arrow keys to set the desired High Alarm temperature setting Press the MODE button until the LAL Low Alarm parameter is displayed Use the UP and DOWN arrow keys to set the desired Low Alarm temperature setting When an alarm limit is reached the audible alarm will sound and the display icon HIGH or LOW will appear on the LCD Note that if the bottom switch located in the battery compartment is set to OFF the audible alarm will be disabled 3 42545A en GB_V4 4 12 14 The MODE button options The MODE button is used to access the programming functions of the instrument The selected function is displayed on the bottom line of the LCD Each parameter is listed below with an explanation for its use Press the MODE button to step from one parameter to the next EMS MAX Emissivity Value To change the emissivity value use the UP and DOWN arrows the range is 0 10 to 1 00 The current emissivity setting is always shown at the top of the LCD display A setting of 0 95 covers about 90 of all applications and when in doubt should be set as such Emissivity is discussed in a dedicated section of this manual Maximum function In the MAX mode only the highest reading encountered in the current measurement session is displayed MIN Minimum function In the MIN mode only the lowest reading is displayed DIF Max minus Min value In the DIF mode the MAX less the MIN is displayed AVG Average value
6. he 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 42545 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 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 6 42545A en GB_V4 4 12 14 Specifications Infrared Thermometer Specifications Range Resolution 50 to 1000 C 58 to 1832 F 0 1 C F Accuracy 2 of re
7. r to turn the meter on and begin testing The temperature reading the flashing SCAN icon the emissivity and the unit of measure will appear Note Replace the 9V battery if the display does not switch on 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 TEST LOCK switch is set to ON Note Select the temperature units F C using the top switch inside the battery compartment Backlight Laser Pointer T 2 While pulling the Trigger push the backlight laser button A once to turn on the backlight Press it again to turn on the laser pointer When the laser is ON the laser icon amp will appear in the LCD Press the laser button to turn the backlight off Pressing it again turns the laser off Note Backlight and Laser settings will be retained after the meter powers down Over range Indication If the temperature measurement exceeds the specified temperature range the thermometer will display dashes in place of a temperature reading High and Low Alarm Feature The Model 42545 has an alarm feature whereas a High Alarm setting and a Low Alarm setting can be programmed by the user When either Alarm point is reached the meter will alert the user via an audible beep and LCD display icon Follow the steps below 1 2 Press the MODE button until the HAL High Alarm parameter is
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