Polimaster PM1621A - Page 8

8
- on exposure to magnetic field of 400
A/m strength
5%
- on exposure to radio frequency
electromagnetic fields of 30 V/m
strength
5%
13
LCD backlight at pressing LIGHT/SET
button
3-5 s
14
Instability of readings during 24 hour
continuous work, no more than
5%
15
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
5 s
16
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
10 s
17
PC communication
- by a special program using IR
communication channel adapter
18
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.
19
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.