Operational Check; Optional Check Source Use - Fluke 481 Operator's Manual

481
Operators Manual

Operational check

Fluke recommends an operational check upon receipt of the Survey Meter and
before each use. Monitor the start sequence. These results indicate the Survey
Meter is operating correctly:
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Optional Check Source Use

To prevent personal injury, use care in the handling and
storage of the check source. The check source contains
radioactive materials used for the verification of the Product
operation.
For more testing use the check source Model 450UCS (Fluke part number:
3267644), a radioactive button source that provides a nominal reading of
0.4 mR/h (4 μSv/h).
To check the Survey Meter, do the following:
12
There are no error messages in the startup sequence.
The display does not freeze (showing only the firmware number).
The Survey Meter gets to the background level within 2 minutes.
1. Turn on and initialize the Survey Meter.
2. After the self-test completes, wait for 2 minutes.
3. Open the beta shield.
4. Place the check source flat against the end window.
5. Check for a nominal reading of 0.4 mR/h (4 μSv/h).
 Warning