ECOTEST MKS-UM Operating Manual page 48

2.3.6.5.2.4 Measurement results of photon-ionizing radiation DER (2) and the
estimated limits of statistical deviations (4) of these results are generated on the LCD
after the measurement starts. Measurement results are updated each 2 seconds.
When DER is measured using the detector that is built in the control unit, ABG
or BG probe, the alarm threshold level is constantly checked for being exceeded by
measurement results with an appropriate dimension. When exceeded, the dosimeter
begins generating a two-tone sound signal and blinks with the ALARM LED. The
measurement results are blinking on the dosimeter's LCD.
When measurement results exceed the upper limit of the measurement range by
more than 30 %, "пппп" symbols are displayed on the LCD instead of the
measurement results.
The dosimeter can operate with three independent threshold levels during DER
measurement. The first one is expressed in Sv/h (mSv/h, μSv/h), the second one in
Gy/h (mGy/h, μGy/h), while the last one - in cps. Comparison of measurement results
is performed only with one threshold level, the measurement units of which
correspond to the selected measurement results units. Only this threshold level can
be viewed or changed.
A twenty-segment instantaneous DER value indicator (5) is intended for quick
assessment of the photon-ionizing radiation intensity. Instant values are displayed in
pseudologarithmic scale. The greater the DER value, the more segments are
highlighted from left to right. The integration time during instantaneous DER value
measuring and the time of information update on the instantaneous value indicator is
1 s when measured using the built-in detector, and 500 ms - when measured with all
other detectors and probes.
Figure 2.11 – LCD of the dosimeter
(Photon-ionizing radiation DER measurement)
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