UNI-T UT301A Operating Manual
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UNI-T UT301A Operating Manual

UNI-T UT301A Operating Manual

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Model UT301A/B/C
UT302A/B/C
UT303A/B/C
OPERATING MANUAL

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Summary of Contents for UNI-T UT301A

  • Page 1 Model UT301A/B/C UT302A/B/C UT303A/B/C OPERATING MANUAL...

  • Page 2: Table Of Contents

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table of Contents Title Page Introduction Contacting Uni-Trend Safety Information Features Display Buttons and Connector How the Thermometer works. Operating the Thermometer Locating a Hot or Cold Spot Distance and Spot Size Field of View...
  • Page 3 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table of Contents Title Page Scanning Walls for Air Leaks or Insulation Deficiencies Testing Bearings Testing Belts and Sheaves Checking Hydronic Radiant Heat Applications Measuring Grille, Register, or Diffuser Discharge Temperature Checking for Blockage in Air-To-Air Evaporators or...
  • Page 4 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL List of Tables Table Title Page Symbols Buttons and Connector Surface Emissivity Troubleshooting...
  • Page 5 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL List of Figures Figure Title Page Symbols and Safety Markings Infrared Thermometer Thermometer Display Buttons and Connector Locating Hot or Cold Spot Distance and Spot Size Field of View...

  • Page 6: Introduction

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Introduction Safety Information The Model UT301A/B/C, UT302A/B/C and UT303A/B/C Infrared Thermometer (hereafter, the “Thermometer”) Warning can determine the surface temperature by measuring A warning identifies conditions and actions that the amount of infrared energy radiated by the target’s pose hazards to the user.
  • Page 7 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table 1 and Figure 1 show various symbols and safety than actual temperature measurements. markings that are on the Thermometer and in this Do not use in a manner not specified by this manual.

  • Page 8: Features

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Degree Celsius and Fahrenheit Temperature Selectable Tripod mount One 9V Battery Thermometer features are shown in Figure 2. Laser Display Figure 1. Symbols and Safety Markings Features Trigger The Thermometer includes: Single-spot Laser Sighting...
  • Page 9 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL The secondary temperature display reports a choice of maximum, minimum, difference between maximum and minimum temperature or average value. You can toggle through the maximum, minimum, difference and average IR temperatures anytime the display is on. The MAX, MIN, DIF and AV temperatures are constantly calculated and updated when the trigger is pressed.

  • Page 10: Buttons And Connector

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table 2. Buttons and Connector Buttons and Connector Button / Description Connector Press MODE button to toggle between MAX, MIN, MODE DIF, and AVG options. Press MODE to turn the Thermometer on again and displays the last measurement result.

  • Page 11: How The Thermometer Works

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL How the Thermometer Works Infrared thermometers measure the surface temperature To find a hot or cold spot, aim the Thermometer outside of an opaque object. The Thermometer’s optics sense the target area. Then, slowly scan across the area with...

  • Page 12: Distance And Spot Size

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL As the distance (D) from the target being measured Make sure that the target is larger than the spot size. increases, the spot size (S) of the area measured by The smaller the target, the closer you should be to it.

  • Page 13: Emissivity

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL base on your own case and materials to have different setting. Emissivity describes the energy-emitting characteristics of materials. Most organic materials and painted or To adjust values for emissivity, follow the below oxidized surfaces have an emissivity of about 0.95.
  • Page 14 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table 3. Surface Emissivity Measure Surface Switch Setting Measure Surface Switch Setting METALS Aluminum Iron Cast Oxidized 0.2-0.4 Oxidized 0.6-0.95 Alloy A3003 Unoxidized Oxidized Molten 0.2-0.3 Roughened 0.1-0.3 Iron Wrought Brass Dull Burnished Lead...
  • Page 15 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Table 3. Surface Emissivity Measure Surface Switch Setting Measure Surface Switch Setting Ground Sheet Iron 0.4-0.6 0.5-0.9 Polished Sheet Oxidized 0.5-0.7 Zinc Rusted Oxidized NON-METALS 0.95 Glass Asbestos 0.95 Plate Asphalt 0.85 Gravel Basalt 0.95...

  • Page 16: Trigger Lock

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL The display will remain activated 8 seconds after the To lock or unlock the trigger, follow the below procedures: trigger is released. HOLD appears in the upper middle 1. Press SET to select trigger lock setting, the of the display.

  • Page 17: Testing Contactors (Starters)

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL to be measured, user could cover the surface to be measured (temperature >150 C) with black electric tape Press SET and then press to set emissivity to (emissivity of about 0.95). Allow time for the tape to...

  • Page 18: Testing Electrical Connections

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL buss connections. Press MODE to select MAX. Scan each end cap on each fuse/ Turn off heating, cooling, and blower. Press SET to select emissivity. Press to select emissivity relatively high for painted surfaces or window surfaces.

  • Page 19: Testing Bearings

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Turn on the blower (no heat, no cooling) and retest. If test results with the blower on are different than results with the blower off, this may indicate air leaks in conditioned envelope walls. The air leaks are caused...

  • Page 20: Testing Belts And Sheaves

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL & yaw”) for belt and sheaves to operate at appropriate temperatures. A straight edge or taut string, can be Press SET and then press to select relatively used to check alignments. high emissivity. Motor sheave should operate at a temperature Press MODE to select MAX.

  • Page 21: Checking Hydronic Radiant Heat Applications

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Radiant heat tubes in the floor will normally run parallel to the outside walls. Starting at the floor wall juncture, Press SET and then press to select relatively scan parallel to the wall while moving into the room high emissivity.

  • Page 22: Maintenance

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Maintenance To install or change the 9V battery, open the battery Remove panels to gain access to coil return bends compartment the battery as shown in Figure 2. or hairpins. Press SET and then press to select relatively high emissivity for copper tube.

  • Page 23: Troubleshooting

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Troubleshooting Table 4. Troubleshooting Symptom Problem Action OL (on display) Target temperature is over range Select target with specifications -OL (on display) Target temperature is under range Select target with specifications Low Battery Replace Battery...

  • Page 24: Specifications

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Specifications Measurement Range (UT301A)------------------------------------------------ -18 C to 350 C (0 F to 662 Measurement Range (UT301B)------------------------------------------------ -18 C to 450 C (0 F to 842 Measurement Range (UT301C)------------------------------------------------ -18 C to 550 C (0...

  • Page 25: Electrical

    Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Sighting ----------------------------------------------------------------------------Single point laser Power ---------------------------------------------------------------------------------- Class 2 (II) operation; Output <1mV, wavelength 630 to 670mm Power Supply -------------------------------------------------------------------- 6F22 9V Battery Power Consumption ------------------------------------------------------------ At least 30 hours battery life (Alkarine), At least 10 hours battery life (General Purpose) Weight ----------------------------------------------------------------------------- 0.322kg...
  • Page 26 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL ** END ** This operating manual is subject to change without notice.
  • Page 27 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL Copyright 2006 Uni-Trend Group Limited. All rights reserved. Manufacturer: Uni-Trend Technology (Dongguan) Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town, Dongguan City Guang Dong Province China Postal Code: 523 925...
  • Page 28 Model UT301A/B/C, UT302A/B/C, UT303A/B/C: OPERATING MANUAL...

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