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Craftsman 81998 Owner's Manual

Wide range infrared (ir) thermometer with type k input and laser pointer.
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Owner's Manual
Wide Range InfraRed (IR)
with type K input
and Laser Pointer
Model No.
CAUTION: Read, understand and
follow Safety Rules and Operating
Instructions in this manual before
using this product.
© Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.
 Safety
 Operation
 Maintenance
 Español


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   Summary of Contents for Craftsman 81998

  • Page 1

    Owner's Manual Wide Range InfraRed (IR) Thermometer with type K input and Laser Pointer Model No. 81998  Safety CAUTION: Read, understand and  Operation follow Safety Rules and Operating  Maintenance Instructions in this manual before using this product.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Warranty Page 3 Safety Instructions Controls Specifications Battery Installation Operating Instructions Non-Contact (IR) Temperature Measurements Backlight and Laser Pointer Contact (type K) Temperature Measurements Test LOCK feature Temperature units (C/F) The MODE button options Automatic Emissivity Lock feature High and Low Alarm Feature Over Range indication IR Measurement Notes...

  • Page 3: Warranty

    RETURN IT TO ANY SEARS STORE OR OTHER CRAFTSMAN OUTLET IN THE UNITED STATES for free replacement. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

  • Page 4: Safety Instructions

    SAFETY INSTRUCTIONS This meter has been designed for safe use, but must be operated with caution. The rules listed below must be carefully followed for safe operation. Use extreme caution when the laser pointer is on Do not point the beam toward anyone's eye or allow the beam to strike the eye from a reflective surface Do not use the laser near explosive gases or in other potentially explosive areas...

  • Page 5: Controls

    CONTROLS Laser pointer IR Sensor Measurement Trigger Battery and Switch compartment LCD Display Function Buttons Type-K thermocouple Temperature units ( C or F) switch Test lock ON / OFF switch 10. Alarm ON / OFF switch Note that switches are located in the battery compartment behind the battery.

  • Page 6: Specifications

    64 to 82ºF (18 to 28ºC) Type K Bead Wire Probe (supplied) Range -58.0 to 482 F (-50.0 to 250 Note: An optional probe that is rated to the full range of the meter is available from the website.

  • Page 7: General Specifications

    General Specifications Display Backlit LCD display with function indicators Response time 1 second approx. Over range indication “---------“ Operating Temperature 32°F to 122°F (0°C to 50°C) Operating Humidity < 80%RH Storage Temperature 14 to 140°F (-10 to 60°C) Storage Humidity <...

  • Page 8: Battery Installation

    BATTERY INSTALLATION When the low battery symbol appears on the display, replace the meter’s battery (9V). The battery compartment is located behind the panel that surrounds the meter’s trigger. Open the compartment by pulling the panel down from the trigger area.

  • Page 9: Backlight And Laser Pointer

    Note: The supplied thermocouple is rated for 482°F (250°C). For higher temperatures you can purchase a high temperature thermocouple from Temperature Units The temperature units can be set to °F or °C using the top switch located in the battery compartment.

  • Page 10: The Mode Button Options

    ‘-----‘. The supplied thermocouple is rated for 482°F (250°C). For higher measurements you can purchase a high temperature thermocouple from that is rated to the full range of this Infared thermometer.

  • Page 11: Automatic Emissivity

    Automatic Emissivity Adjustment The 81998 has the ability to automatically calibrate the emissivity setting. However, in order to do so, the temperature of the measured surface must be above 212ºF (100ºC). Follow the steps below to use the automatic emissivity adjustment feature: 1.

  • Page 12: Lock Feature

    High and Low Alarm Feature The 81998 has an alarm feature where 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.

  • Page 13: Ir Measurement Notes

    IR Measurement Notes 1. The object under test should be larger than the spot (target) size calculated by the Distance-to-spot ratio diagram (printed on the side of the meter and in this guide). 2. Before measuring, be sure to clean surfaces that are covered with frost, oil, grime, etc.

  • Page 14: Distance-to-spot Ratio

    Distance-to-spot ratio The meter’s distance-to-spot ratio is 13:1. For example, if the meter is 13 inches from the target (spot), the diameter of the target must greater than 1 inch. Other distances are shown in the field of view diagram. Measurements should normally be made as close as possible to the device under test.

  • Page 15: Emissivity And Ir Measurement Theory

    Emissivity values range from 0.1 for a very reflective object to 1.00 for a flat black finish. For the Model 81998, 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.

  • Page 16: Maintenance

    MAINTENANCE This IR thermometer is designed to provide years of dependable service, if the following care instructions are performed: 1. KEEP THE METER DRY. If it gets wet, wipe it off. 2. USE AND STORE THE METER IN NORMAL TEMPERATURES. Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts.

  • Page 17: Troubleshooting

    TROUBLESHOOTING There may be times when your meter does not operate properly. Here are some common problems that you may have and some easy solutions to them. Meter Does Not Operate: 1. Always read all the instructions in this manual before use. 2.

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