- on exposure to magnetic field of 400
A/m strength
- on exposure to radio frequency
electromagnetic fields of 30 V/m
strength
LCD backlight at pressing LIGHT/SET
button
Instability of readings during 24 hour
continuous work, no more than
Response time when DER value is
increased more than 10 times, from
initial low DER value to finite fixed high
DER value exceeding 10 Sv/h, no
more than
Response time when DER value is
decreased more than 10 times, from
initial high to finite fixed low DER value
exceeding 10 Sv/h, no more than
- by a special program using IR
communication channel adapter
In the mode of data transmission to PC
the dosimeter provides the following
functions:
1) permission or prohibition the following
be displayed on LCD:
- DER or DE photon radiation measured
value indication;
- relative mean square error of average
value of measurement result with 0.95
probability (statistical error) in percents;
- dosimeter number (“blind dosimeter”);
2) reading from PC into dosimeter and
storing in instrument’s non-volatile
memory the following information:
- dosimeter serial number;
- history of DE and DER accumulation at
user set time periods;
- DE (DER) values when set thresholds
are exceeded, as well as time, date and
month, when set thresholds where
exceeded;
- DE and DER set thresholds values;
- service information;
3) following information is recorded from
PC to dosimeter:
- values of DE and DER thresholds
being set;
- current date and time for DE
accumulation history;
- operation modes.
In the search mode the dosimeter
PМ1621М, РМ1621МА) enables
following functions:
- detect and locate the photon radiation
sources on the basis of audio-, vibro-
and light (LED blinking) alarm signal
frequency changes;
- search mode on/off;
- search mode on/off state indication.