Figure 30. Field of View
Tip: When accuracy is critical make sure that the target is at least twice as large as the spot size.
Environmental Conditions
Watch for environmental conditions in the working area. Steam, dust, smoke, etc.,
can prevent accurate measurement by obstructing the path between the target and the unit's optics. Noise, electromagnetic fields, or vibration are other conditions that can interfere with temperature measurements, and should be considered before starting temperature measurements.
Tip: If interfering factors can not be mitigated try to change your position relative to the source of interference, or pick a time when interfering factors are not present or at a smaller level.
Ambient Temperatures
The imager’s operating temperature range is 0 to 50θ (32 to 122θF). Its calibration is maintained within this range. The unit will not perform in terms of the accuracy and repeatability if used outside the stated operating temperature range. Also, if the imager is
exposed to abrupt ambient temperature differences of 10θC (18θF) or more, allow it to adjust to the new ambient temperature for at least 20 minutes.
Tip: When inspecting equipment in a plant, plan the sequence of locations to be inspected so the ambient temperature changes are gradual.
July 1, 2003 | - 48 - | Version 1.0 |
i | Tel: (01943) 602001- WWW.ISSLTD.CO.UK - Fax: (01943) 816796 | i |
