Polimaster PM1621M, Руководство по эксплуатации

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2.4.3 DER indication mode
In the DER mode (figure 2.1) the following values appear on the LCD:
- DER (
µ
Sv/h, mSv/h, Sv/h);
- DER on the analogue scale in a logarithmic gauge (seven segments);
- coefficient of variation in percents;
- averaging time of DER values (Range of the averaging time indication is from 1 up to
2999 s. If the averaging time exceeds 2999 s, the symbols “ - - - ” appear on the LCD).
If the measured DER value is over the upper limit of the DER indication range
(200 mSv/h for the РМ 1621M and 2 Sv/h for the РМ 1621M А ), the LCD will show the
overload symbol “ OL ” and the interrupted sound signal is formed.
In the DER mode the collected statistics of DER measurement can be cleared and
measurement reactivated by simultaneously pressing the LIGHT + MODE buttons.
2.4.4 DE indication mode
In the DE mode (figure 2.1) the following values are indicated on the LCD:
- DE (
µ
Sv, mSv, Sv);
- DE accumulation time.
DE and DE accumulation time can be reset in the set mode by simultaneously pressing
the LIGHT+MODE buttons (Figure 2.2).
In the mode of data transmission to PC it is possible to set an inhibit for DE reset using
the buttons.
There are two method of measurement of the DE accumulated over a certain period of time.
The first method (recommended). In the beginning of measurement the DE should be
reset using the keys or the PC and the program “System of date collection and processing for
the 1621 device.” Then the dose displayed at the end of the period will be the dose
accumulated over the period of measurement.
The second method . The dose value in the beginning of the period of measurement
should be deducted from the DE value displayed at the end of the period.
In the DE mode the indication (Figure 1.2, items 3 and 4) of values of time remaining for
staying at the working place depending on the current measured DER and DE values is
possible. Calculation of time is performed relative to the second preset DE threshold (the
function may be switched on at the DE indication mode configuration).
2.4.5 Set mode
Auxiliary set mode (figures 2.2, 2.3) is meant for verification and (or) setting of the
threshold DE (DER) values, DE and DE accumulation time reset.
Attention! To enter the “set” mode press and hold for about 5 s the LIGHT
button and the parameter to be set will be flashing.
To chose the parameter press and release the LIGHT button.
Press and hold the MODE button to rapidly change the parameter.
Press and release the MODE button to change the parameter to an exact setting.
Press and hold the SET button to exit the “set” mode or the dosimeter will automatically exit
set mode in approximately 90 seconds.
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