Laurus Health Physics Miron Technologies DMC 3000, Руководство пользователя

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Minor Faults
Display Cause Solution
Exceeded date of calibration Perform a calibration check.
Missing bit/pointer in the histogram
Verify that the battery voltage is sufficient and perform an
entry with
dmc
User software. If the fault persists, contact
Mirion for verification.
A
larms
5.5.4 Optical Test and Impulse Test
The DMC 3000's gamma and X-ray detection capabilities are provided by two detectors. For a complete check
of the gamma and X-ray detection capabilities, two complementary tests are performed.
First, a periodic optical test is performed every 10 minutes both in Pause and Run modes by generating light
pulses on both detectors to simulate gamma photons.
If the number of pulses detected is less than expected on one of the two channels, a fault is
displayed, indicating that the detection function is no longer operational.
In addition to the optical test, the background counting is verified. If the duration between two pulses is too
long compared to the statistical time calculation, then a fault
is displayed.