Wide Range InfraRed (IR) Thermometer
Contents
1. 0 to 1 00 adjustable Automatic adjust above 212 F or 100 C D S Approx 13 1 ratio D distance S spot or target Type K Thermocouple Contact Specifications Range Resolution 50 0 to 1370 0 C 58 0 to 1999 9 F 2000 F to 2498 F Accuracy 1 5 of rdg 1 C 2 F Note Accuracy is specified for the following ambient temperature range 18 to 28 C 64 to 82 F The supplied thermocouple is rated for 250 C 482 F General Specifications Display Backlit LCD display with function indicators Display update rate 1 second approx Operating Temperature loc to 50 C 32 F to 122 F Operating Humidity 80 Relative Humidity max Power Supply 9V battery Automatic Power Off Meter shuts off automatically after 7 seconds Weight 180g 6 4 oz Dimensions 82 x 42 x 160mm 3 2 x 1 6 x 6 3 Copyright 2009 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form 9 42515 EU V4 1 2 092. User Manual EXTECH INSTRUMENTS A FLIR COMPANY Wide Range InfraRed IR Thermometer with Type K input and Laser Pointer MODEL 42515 Introduction Congratulations on your purchase of the Model 42515 IR Thermometer The Model 42515 IR thermometer measures and displays non contact infrared temperature readings up to 1472 F 800 C The built in laser pointer increases target accuracy while the backlit LCD and handy push buttons combine for convenient ergonomic operation The Type K thermocouple input provides contact measurements up to 1370 C 2498 F 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 The supplied thermocouple is rated for 250 C 482 F Safety e Use extreme caution when the laser pointer is on e Do not point the beam toward anyone s eye or allow the beam to strike the eye from a reflective surface LASER RADIATION DO NOT STARE INTO BEAM DIODE LASER lt 1mW Output at 675nm CLASS II LASER PRODUCT e Do not use the laser near explosive gases or in other potentially explosive areas 2 42515 EU V4 1 2 09 Meter Description Laser pointer IR Sensor Measurement Trigger Battery and Switch compartment LCD Display Function Buttons Type K thermocouple ao eo ee a Temperature units C or F switch Test lock ON OFF
3. e connector Note that one plug spade is wider than the other and the plug can only be inserted into the meter in one direction Pull the trigger to turn the instrument ON In order to keep the instrument s power on while testing the user can a hold the trigger or b lock the instrument on by setting the center dip switch to the ON position switches are located inside of the battery compartment Repeatedly press the MODE button until the bottom display line of the LCD reads T k The temperature shown to the right of the T k symbol is the temperature that the Type K thermocouple is sensing Hold the thermocouple in air or touch the tip of the sensor to the device that is to be tested The LCD s bottom temperature display will provide the measurement value The supplied thermocouple is rated for 250 C 482 F 4 42515 EU V4 1 2 09 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 a detailed account of its use Press the MODE button to step from one parameter to the next EMS 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 Emissivity is discussed in a dedicated section of
4. nutes 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 13 1 For example if the meter is 13 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 Spot 16cm 2cm 4cm 8cm Distance to Spot 7 42515 EU V4 1 2 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
5. play replace the meters battery 9V The battery compartment is located behind the light green panel that surrounds the meter s trigger see diagram Open the compartment by pulling the light green panel down from the trigger area 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 6 42515 EU V4 1 2 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 mi
6. switch 10 Alarm ON OFF switch Note that switches are located in the battery compartment behind the battery 3 42515 EU V4 1 2 09 Operating Instructions IR non contact Measurements 1 2 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 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 l 2 3 4 While pulling the Trigger push the backlight laser button TA once to turn on the backlight Press it again to turn on the laser pointer When the laser is ON the laser icon 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 Type K contact Measurements le wo N 4 Plug the Type K thermocouple sensor into the jacks at the bottom of the instrument The jack accepts a standard sub miniatur
7. the LCD and the Type K temperature will be displayed on the lower LCD line Touch the Type K sensor to the surface and at the same time take an IR reading When both the IR and the Type K measurements stabilize press the UP or DOWN arrow button The new emissivity value will now be displayed Proceed to take measurements 5 42515 EU V4 1 2 09 Over range Indicator 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 42515 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 Press the MODE button until the HAL High Alarm parameter is displayed Use the UP and DOWN arrow keys to set the desired High Alarm setting 2 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 setting 3 When an alarm limit is reached the audible alarm will sound and the display icon HIGH or LOW will appear in the lower right hand corner of the LCD 4 Note that if the bottom dip switch located in the battery compartment is set to OFF the audible alarm will be disabled Battery Replacement When the low battery symol appears on the lower left side of the dis
8. 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 Concrete Cement Sand Soil Water Ice Snow Glass Ceramic Marble Plaster Mortar Brick 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 0 83 0 90 to 0 95 0 90 to 0 94 0 94 0 80 to 0 90 0 89 to 0 91 0 93 to 0 96 Cloth black Skin human Leather Charcoal powder Lacquer Lacquer matt Rubber black Plastic Timber Paper Chromium Oxides Copper Oxides lron Oxides Textiles 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 mr 0 78 0 78 to 0 82 0 90 42515 EU V4 1 2 09 Specifications Infrared Thermometer Non contact Specifications Range Resolution 50 0 to 800 0 C 58 0 to 1472 0 F Resolution 0 1 Accuracy 50 to 1 C 58 to 30 F 2 0 rdg or 3 C 6 F whichever is greater 0 5 to 65 C 31 F to 150 F 2 0 rdg or 2 5 C 4 5 F whichever is greater 66 to 315 C 151 F to 600 F 2 0 rdg or 2 C 4 F whichever is greater 316 to 800 C 600F to 1472 F 2 5 rdg 2 5 C 5 F Note Accuracy is specified for the following ambient temperature range 23 to 25 C 73 to77 F 0 1
9. this manual MAX 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 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 T k Type K contact thermocouple sensor function The temperature reading of the Type K contact probe is shown next to the T k icon display If the sensor is not correctly inserted to the meter the display will show all dashes Automatic Emissivity Adjustment The 42515 has the ability to automatically calibrate the emissivity setting However in order to do so the temperature of the measured surface must be above 100 C 212 F Follow the steps below to use the automatic emissivity adjustment feature 1 2 Press the MODE button until the EMS Emissivity icon appears on the lower LCD line Press and hold the Laser Backlight button until the EMS icon begins to blink and the emissivity value is displayed as __ The IR temperature will be displayed on the middle line of
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