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that the target is at least twice as large as the spot size.
Q. How to take temperature measurement?
A. To take a temperature measurement, just point the unit at the object you wish to
measure. Be sure to consider distance-to-spot size ratio and field of view. There are
important things to keep in mind while using infrared thermometers:
1. Measure surface temperature only. The IR thermometer cannot measure
internal temperatures.
2. Do not take temperature measurement through glass. Glass has very
distinctive reflection and transmission properties that do not allow accurate
infrared temperature reading. Infrared thermometers are not recommended for
use in measuring shiny or polished metal surfaces (stainless steel, aluminum, etc.).
(See Emissivity.)
3. Watch for environmental conditions. Steam, dust, smoke, etc., can prevent
accurate measurement by obstructing the unit’s optics.
4. Watch for ambient temperatures. If the thermometer is exposed to abrupt
ambient temperature differences of 10 degrees or more, allow it to adjust to the
new ambient temperature for at least twenty minutes.
Q. What are the most popular applications?
A. Non-contact thermometers have many uses. The most popular include:
1. Predictive and Preventive Industrial Maintenance: check transformers,
electrical panels, connectors, switchgear, rotating equipment, furnaces and much
more.
2. Automotive: Diagnose cylinder heads and heating/cooling systems.
3. HVAC/R: Monitor air stratification, supply/return registers and furnace
performance.
4. Food Service & Safety: Scan holding, serving, and storage temperatures.
5. Process Control & Monitoring: check process temperature of steel, glass,
plastics, cement, paper, food & beverage.
For additional information on applications for non-contact IR thermometers visit our
website at www.raytek.com.
July 1, 2003 - 74 - Version 1.0
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Tel: (01943) 602001- WWW.ISSLTD.CO.UK - Fax: (01943) 816796