Cautions - Fluke 4181 User Manual

4180, 4181 Precision Infrared Calibrator
Safety Information
1.4.2

Cautions

Protect the target against dirt and damage – scrapes and scratches. A well kept target
surface, free from dirt and damage, produces better measurements. Use the target
cover whenever the instrument is not in use to protect the target. Always use the target
cover when transporting the instrument, but remember to never transport the instru-
ment when the target temperature is above 50°C.
DO NOT touch the target. Oils and salts from the skin will permanently damage the
target surface at high temperatures.
When ice forms on the target, change the instrument set-point higher than 50°C to
melt the excess ice. DO NOT wipe the front plate (target). Change the set-point to
100°C or higher to evaporate the excess water.
DO NOT use fluids to clean the target surface.
DO NOT use shop air to clean the target surface. Oil and contaminants in the shop air
could contaminate the surface.
DO NOT use canned, compressed air (used to clean a computer) to clean the target
surface. Chemicals in the air could contaminate the target surface.
DO NOT force cool the surface. The surface should not be cooled by any method
other than natural convection. Forced air can often have oil or water in it. Even water
can leave mineral deposits on the surface. Trying to cool the surface too quickly can
also cause thermal shock to the emissive surface.
DO NOT use liquid nitrogen (LN2) to quick cool the target.
DO NOT plug the instrument into 230V if the fuse holder reads 115V. This action will
cause the fuses to blow and may damage the instrument.
Component lifetime can be shortened by continuous high temperature operation.
DO NOT change the values of the calibration constants from the factory set values.
Calibration constants shall only be changed by qualified and authorized personnel. The
correct setting of these parameters is important to the safety and proper operation of
the calibrator.
DO use a ground fault interrupt device.
Always operate this instrument at room temperatures as stated in Section 2.2 Environ-
mental Conditions on page 10.
The instrument is a precision instrument. Although is has been designed for optimum
durability and trouble free operation, it must be handled with care. It is important
to keep the calibration well and the IR target surface clean and clear of any foreign
matter.
Always carry the instrument in an upright position. The convenient pull-up handle al-
lows one hand carrying.
DO NOT operate the instrument in excessively wet, oily, dusty, or dirty environments.
DO NOT operate near flammable materials.
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