Receiving Inspection; Operation; External Controls; On/Off Button - Fluke 481-DESI Operator's Manual

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Receiving Inspection

Upon receipt of the unit:
1. Check the shipping cartons(s) and their contents for in-shipment damage.
2. Check that all items listed on the packing slip are present and in good condition.
If damage is evident, make a claim with the carrier and contact Fluke immediately. If
items are missing, contact Fluke. See the How to Contact Fluke section in this manual.

Operation

The following sections describe the operation of the Survey Meter.

External Controls

There are two external controls on the survey meter: an ON/OFF button and a MODE
button.

ON/OFF Button

Press the ON/OFF button to turn the unit on. All the elements in the display turn on and
the microprocessor runs through an initialization procedure. Part of the procedure
includes reading the calibration coefficients stored in EEPROM. If an EEPROM read
error occurs, an error code (E1) will be displayed at power-on and unity calibration
coefficients will be used.
The bar graph and digital display will show a reading that decreases as the instrument
stabilizes. The initial reading usually starts in the 50 R/h (50 mSv/h) range and decreases
through the lower ranges to a reading of less than 0.5 mR/h (5 Sv/h) within 40 seconds.
When the elements in the display turn off, with the exception of those necessary for
normal operation, the user can begin the measurement process.
Background fluctuations may occur (less than 0.5 mR/h (5 Sv/h))
returning to the original reading typically in less than 3 seconds.
Shop for Fluke products online at:
Model 481B Typical Energy Dependence
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Ion Chamber Survey Meter
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Receiving Inspection
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