Fluke Biomedical 451P - Manual (Page 20)

451P
Operators Manual
10
Receiving Inspection
Upon receipt of the Survey Meter:
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 How to Contact Fluke.
Operation
The following sections describe the operation of the Survey Meter.
 Warning
To prevent possible electrical shock, fire, or personal injury:
• Do not put metal objects into connectors.
• Fluke recommends that you wait for a one-minute warm-up
period before you make a measurement. If the Survey Meter
experiences a very large temperature change (for example,
it moves indoors from outside) a longer warm-up period can
be necessary to measure a value less than 50
μ R/h.
External Controls
There are two external controls on the Survey Meter: and ON/OFF button and a
MODE button.
ON/OFF Button
Press the ON/OFF button to turn on the Survey Meter. 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) displays at
power-on and unity calibration coefficients are used.
The bar graph and digital display will show a reading that decreases as the
Survey Meter stabilizes. The initial reading usually starts in the 5 R/h range and
decreases through the lower ranges to a reading of less than 50 μ R/h within
120 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.
Note
Background fluctuations may occur (less than 50 μ R/h) returning to
original reading typically in less than 3 seconds.