General IRT850K User Manual

General IRT850K User Manual

50:1 ultra-wide range ir thermometer with “k” port

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50:1 ULTRA-WIDE RANGE
IR THERMOMETER
WITH "K" PORT
USER'S MANUAL
IRT850K
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
Please read this manual carefully and thoroughly before using this product.

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Summary of Contents for General IRT850K

  • Page 1 50:1 ULTRA-WIDE RANGE IR THERMOMETER WITH “K” PORT USER’S MANUAL IRT850K 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Please read this manual carefully and thoroughly before using this product.
  • Page 2: Table Of Contents

    Thermometer with “K” Port. Please read this user’s manual carefully and thoroughly before using the instrument. The IRT850K is a specialized instrument that can measure the temperature of a very hot or cold object or surface (the target) by using an IR sensor to measure its thermal radiation from a safe distance.
  • Page 3: Safety Instructions

    CAUTION - Performing procedures other than those specified in this manual may result in dangerous radiation exposure. The IRT850K is a Class 2 laser product that emits less than 1 mW of radiation at a wavelength between 635 and 660nm. Avoid looking directly at the laser pointers. U.S. law prohibits pointing a laser beam at aircraft;...
  • Page 4: Product Overview

    Figure 1 shows all of the controls, indicators, connectors and other physical features of the IRT850K. Figure 2 shows a typical measurement display. Familiarize yourself with the positions and functions of all controls and key components and the meaning of all display indications before moving on to the Setup Instructions and Operating Instructions.
  • Page 5: Setup Instructions

    SETUP INSTRUCTIONS INSTALL BATTERIES The IRT850K is ready for use after you install two “AAA” batteries (not included) in the instrument’s grip. To open the battery compartment (Fig. 1, Callout 7), pull the top of its hinged cover away from the grip. Then install the two batteries in the compartment, using the + and –...
  • Page 6: Accounting For Emissivity

    If background objects are hotter than the target, the measured temperature will be higher than the target’s actual temperature. The IRT850K’s very large D:S ratio of 50:1 enables measurement of very high- or –low temperature objects from a safe distance.
  • Page 7 (LAL). The IRT850K can store up to 24 pairs of temperature measurements/emissivity values. Fig. 4. A typical IRT850K memory screen Two other functions are available whenever the IRT850K is operating in MAX, MIN, dIF or AVG mode. 1. Pressing the Lock button puts the instrument into LOCK mode.
  • Page 8: Other Display Indications

    To replace the batteries, follow the Setup Instructions on p. 5. Alarm messages. The following four types of alarm messages could appear on the IRT850K’s display. “Hi” or “Low” is displayed when the measured temperature is higher than the HAL setpoint or lower than the LAL setpoint.
  • Page 9: Specifications

    180 hours (typical) of continuous use with lasers and backlight off MAINTENANCE TIPS The IRT850K cannot make accurate measurements if there is glass or plastic between it and the target. Clean the lens of the IR sensor lens (Fig. 1, Callout 8) often—but never use a solvent.
  • Page 10: Warranty Information

    Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product. In no event shall General be liable for any incidental, special, consequential or punitive damages, or for any cost, attorneys’ fees, expenses, or losses alleged to be a consequence of any damage due to failure of, or defect in any product including, but not limited to, any claims for loss of profits.
  • Page 11: Appendix I: How To Make Accurate Ir Measurements

    Tavg = (Tmotor + Tbackground) ÷ 2 Solving for Tavg, we get (200 + 75) ÷ 2 or 137.5°F., which is what the IRT850K would display. In other words, trying to measure the temperature of the motor from 100 ft. away introduced an error of (200-137.5) ÷...
  • Page 12: Appendix Ii: Emissivities Of Common Materials

    APPENDIX II EMISSIVITIES OF COMMON MATERIALS Material Emissivity Material Emissivity Aluminum 0.30 Glass 0.90 to 0.95 Asphalt 0.95 Iron Oxides 0.78 to 0.82 Concrete 0.95 Paint 0.80 to 0.95 Asbestos 0.95 Plastic 0.85 to 0.95 Ceramics 0.95 Paper 0.70 to 0.94 Brass 0.50 Plaster...
  • Page 13: Manual Del Usuario En Español

    NOTES __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________...
  • Page 14 Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Specifications subject to change without notice ©2015 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS. MAN# IRT850K 5/26/15 General Tools & Instruments GeneralToolsNYC...

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