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reedinstruments

www

com

Model

ST-8839

Non-Contact Infrared 

Thermometer

Instruction

Manual

Summary of Contents for ST-8839

Page 1: ...reedinstruments www com Model ST 8839 Non Contact Infrared Thermometer Instruction Manual...

Page 2: ...Function 7 Switching Settings 7 Cleaning 8 Notes 8 9 Battery Replacement 10 Safety Use extreme caution when the laser beam is turned on Do not let the beam enter your eye another person s eye or the...

Page 3: ...cifications Response Time Less than 1 second Spectral Response 8 14um Emissivity Digitally adjustable from 0 10 to 1 0 Over Range Indication LCD will show 0L 0L Polarity Automatic no indication for po...

Page 4: ...ase instruction manual Notes Accuracy Given at 18 to 28 C 64 to 82 F less than 80 RH Field of View Make sure that the target is larger than the unit s spot size The smaller the target the closer you s...

Page 5: ...on 8 Measurement Trigger 9 Handle Grip 10 Battery Cover Display Description 1 Data Hold 2 Measuring indication 3 Emissivity symbol value 4 Low battery lock laser on 5 Backlight on symbol 6 C F symbol...

Page 6: ...begin testing The display will light if the battery is good Replace the battery if the display does not light 3 While measuring the SCAN display icon will appear in the upper left corner of the LCD 4...

Page 7: ...ect the temperature units C or F by using the C F switch To lock the unit on for continuous measurement slide the middle switch LOCK ON OFF to the right If the trigger is pulled while the unit is lock...

Page 8: ...e target the closer you should be to it When accuracy is critical make sure the target is at least twice as large as the spot size Distance Spot Size As the distance D from the object increases the sp...

Page 9: ...erature as the material underneath it Measure the temperature of the tape or painted surface Emissivity Values Substance Thermal Emissivity Substance Thermal Emissivity Asphalt 0 90 to 0 98 Cloth blac...

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