 Resource Center -
Calibration
When to Bump Test and When to
Calibrate
In the past,
there often has been confusion regarding proper calibration
procedures and frequency. To clarify this issue,
the
International Safety Equipment
Association (ISEA) issued
a
position
statement on instrument calibration that states,
"A bump test or full calibration of direct-reading portable gas
monitors should be made before each day's use in accordance
with manufacturer's instructions, using an appropriate test
gas." If the instrument fails a bump test, it must be adjusted
through a full calibration before it is used.
ISEA
recommends more frequent testing if environmental conditions
that could affect instrument performance are suspected, such as
sensor poisons. The ISEA allows for less frequent calibration
verification under certain conditions, but the interval between
testing should never exceed 30 days.
TG Technical
Services provides calibration maintenance programs however, YOU
MUST ALWAYS CHECK YOUR OPERATORS MANUAL FOR THE MANUFACTURERS
REQUIREMENTS FOR FREQUENCY OF "ACTUAL CALIBRATION". Regardless
of the calibration frequency you must ALWAYS Bump test the
instrument before each use!
Manufacturers Statements On Calibration
Frequency
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