- measurement of photon radiation DER;
- measurement of photon radiation DE;
- indication of settings;
- search (for РМ1621М, РМ1621МА);
- indication of partial and critical battery
discharge;
- audio and (additionally for РМ1621М,
РМ1621МА) light and vibro alarm activation
when DE or DER thresholds are exceeded
- indication of the dosimeter’s number ("blind
dosimeter");
DER indication sub-ranges
0,01 – 9,99 Sv/h;
10,0 – 99,9 Sv/h;
100 – 999 Sv/h;
1,00 – 9,99 mSv/h;
10,0 – 99,9 mSv/h;
100 – 200 mSv/h (РМ1621, РМ1621М);
100 – 999 mSv/h (РМ1621А, РМ1621МА);
1,00 – 2,00 Sv/h (РМ1621А, РМ1621МА).
- DER analogue scale (seven
segments) in a logarithmic gauge
Number of indicated segments (from left to
right) corresponds to the following DER
threshold values on the LCD display:
- one segment – 0.1 Sv/h;
- two segments – 1 Sv/h;
- three segments –- 10 Sv/h;
- four segments – 100 Sv/h;
- five segments – 1 mSv/h;
- six segments – 10 mSv/h;
- seven segments – 100 mSv/h
Maximum permissible intrinsic relative
error of DER measurement
(15 + К
1
/ + К
2
) %,
where DER value, mSv/h;
К
1
– coefficient 0.0015 (mSv/h);
К
2
– coefficient 0.01 (mSv/h)
-1
Maximum permissible intrinsic relative
error of DE measurement
0.01 – 9.99 Sv;
10.0 – 99.9 Sv;
100 – 999 Sv;
1.00 – 9.99 mSv;
10.0 – 99.9 mSv;
100 999 mSv;
1.0 Sv – 9.99 Sv
Discreteness of DE accumulation time
indication