Mini InfraRed Thermometer
Contents
1. ambient temperature It can however take up to 30 minutes for the meter to adjust to extremely wide ambient temperature 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 on Battery Replacement When the low battery symbol C_F appears on the LCD replace the meter s 9V battery The battery compartment is located on the bottom of the meter s handle Open the compartment by sliding the battery compartment cover off in the direction of the arrow Replace battery and re install the battery compartment cover Calibration and Repair Services Extech offers repair and calibration services for the products we sell Extech also provides NIST certification for most products Call the Customer Service Department for information on calibration services available for this product Extech recommends that annual calibrations be performed to verify meter performance and accuracy T Support Hotline 781 890 7440 Tech support Ext 200 Email support extech com Repair Returns Ext 210 Email repair extech com Website www extech com Warranty EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies on sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty peri2. set to ON and the temperature units are set to F at the time the unit is turned off the unit will turn on employing the same settings Over range Indicator If the temperature measurement exceeds 500 F 260 C the thermometer will display dashes in place of a temperature reading Field of View The meter s field of view is 6 1 For example if the meter is 12 inches from the target spot the diameter of the target must be at least 2 inches Other distances are shown below in the field of view diagram Note that measurements should normally be made less than 2 feet from the target The meter can measure from further 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 z 1 Sensor Beam 0 63 Distance to Object Measurement Notes 1 The object under test should be larger than the spot target size calculated by the field of view diagram 2 If the surface of the object under test is covered with frost oil grime etc clean before taking measurements 3 If an object s surface is highly reflective apply masking tape or flat black paint to the surface before measuring 4 The meter may not make accurate measurements through transparent surfaces such as glass Steam dust smoke etc can obscure accurate measurements The meter compensates for deviations in
3. User s Manual EXTECH INSTRUMENTS Mini InfraRed Thermometer with Laser Pointer MODEL 42500 Introduction Congratulations on your purchase of the Model 42500 IR Thermometer This thermometer makes 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 Proper use and care of this meter will provide years of reliable service Safety e Use extreme caution when the laser pointer beam is on e Do not point the beam toward anyone s eye or allow the beam to strike the eye from a reflective surface CAUTI 0 N e Do not use the laser near explosive gases or in other LASER RADIATION potentially explosive are s e DIODE LASER lt 1mW Output at 675nm CLASS II LASER PRODUCT Specifications Infrared Thermometer Specifications Range Resolution 4 to 500 F 20 to 260 C 1 C F Accuracy 3 of reading or 6 F 3 C whichever is greater Note Accuracy is specified for the following ambient temperature range 64 to 82 F 18 to 28 C Emissivity 0 95 fixed value Field of View D S Approx 6 1 ratio D distance S spot Laser power Less than 1mW Spectral response 6 to 14 um wavelength General Specifications Display 2000 count backlit LCD display with function indicators Display rate 1 second approx Operati
4. ng Temperature 32 F to 122 F 0 C to 50 C Operating Humidity Max 80 RH Power Supply 9V battery Automatic Power Off Meter shuts off automatically after 6 seconds Weight 4 9 oz 140g Dimensions 6 7 x 1 7 x 1 6 170 x 44 x 40mm Meter Description 1 LCD Display 2 Function Buttons 3 Handle Grip 4 IR Sensor 5 Laser pointer beam 6 Measurement Trigger 7 Battery Compartment Operating Instructions 1 Hold the meter by its Handle Grip and point it toward the surface to be measured Read the Field of View section below for information on distance to target ratios Pull and hold the orange Trigger to turn the meter on and begin testing The display will light if the battery is good Replace the battery if the display does not light While continuing to pull the Trigger a b c Push the Laser button to turn on the laser pointer When the laser is on the laser icon A will appear on the LCD over the temperature reading Aim the red beam approximately a half inch below the point of test pressing the Laser button again turns the laser off Select the temperature units using the C F button Push the backlight button far right to turn on the LCD backlighting function Release the Trigger and the reading will hold for approximately 6 seconds and then the meter will automatically shut off The meter defaults to the programmed conditions in use when the meter was last turned off For example if the laser is
5. od contact the Customer Service Department at 781 890 7440 ext 210 for authorization or visit our website at www extech com click on Contact Extech and go to Service Department to request an RA number A Return Authorization RA number must be issued before any product is returned to Extech The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages Extech s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Copyright 2003 Extech Instruments Corporation All rights reserved including the right of reproduction in whole or in part in any form
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