Tenma 72-820 Manual
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Tenma 72-820 Manual

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Infrared Thermometer
Model: 72-820 and 72-823
1

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Summary of Contents for Tenma 72-820

  • Page 1 Infrared Thermometer Model: 72-820 and 72-823...
  • Page 2 IMPORTANT SAFETY INFORMATION Please read these instructions carefully before use and retain for future reference. • Please operate according to this manual, otherwise the protection provided by the device will be impaired or fail. • Do not point laser directly in your eyes or indirectly off reflective surfaces. •...
  • Page 3 Display • The primary temperature display reports the current or last IR temperature read until the 8-second hold time elapses. • The secondary temperature display reports a choice of maximum, minimum, difference between maximum and minimum temperature or average value. •...
  • Page 4 Button operation. Press to turn on the display backlight. When Thermometer enters user set up mode use to select a Press SET to enter set up mode ▼ further option. stepping through Emissivity set up, trigger lock and switching F set up. Press to turn on laser target function Press MODE button to toggle between...
  • Page 5 Emissivity • Emissivity describes the energy-emitting characteristics of materials. Most organic materials and painted or oxidized surfaces have an emissivity of about 0.95. • If possible, to compensate for inaccurate readings that may result from measuring shiny metal surfaces, cover the surface to be measured with masking tape or flat black paint (<150 C / 302 F) and use the high emissivity setting.
  • Page 6 Measure Surface (non-metals) Switch Setting Asbestos 0.95 Asphalt 0.95 Basalt Carbon clean 0.8-0.9 Graphite 0.7-0.8 Carborundum Ceramic 0.95 Clay 0.95 Concrete 0.95 Cloth 0.95 Plate glass 0.85 Gravel 0.95 Gypsum 0.8-0.95 0.98 Limestone 0.98 Paper (any colour) 0.95 Opaque plastic 0.95 Soil 0.9-0.98...
  • Page 7 Testing Fuses and Bus Connectors • Press SET and then press to set emissivity to relatively high for paper covered ▲ ▼ fuse body or insulated connections. • Press MODE to select MAX. • Scan the paper covered length of fuse. •...
  • Page 8 F to 1200 Spectral Range 8 to 14 microns Accuracy 1.8% or (1.8 Repeatability 0.5% of reading or 1 Response Time (95%) 250ms Distance to Spot (72-820) 12:1 Distance to Spot (72-823) 20:1 Emissivity adjustment 0.10~1.00 Display resolution C (0.1 ±0.1...

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72-8231563716640522695058

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