Polimaster PM1610B User Manual

26
where Q
o
– uncertainty of the reference dosimeter assembly, %;
Q
jmax
– maximum measurement error of all Qj values, %;
13) compare the calculated value  with an acceptable value 
acc
calculated by formula:
- for РМ1610 and РМ1610-01 instruments
 (15 + К/

H
) %, (5.5)
where

H
 DER value in mSv/h,
K  coefficient 0.0015 mSv/h;
- for РМ1610А, РМ1610А-01, РМ1610B and РМ1610B-01 instruments
 (10 + К
1
/

H
+К
2
∙

H
) %, (5.6)
where

H
 DER value in mSv/h,
K
1
 coefficient 0.0015 mSv/h,
K
2
 coefficient 0.0015 (mSv/h)
-1
.
The instrument passes the test if   
acc
.
5.8.3.2 Calculate permissible intrinsic relative error of the DE measurement in the following
way:
1) set the maximum values of DER threshold and DE threshold in the dosimeter and enter the
DE measurement mode;
2) perform item 5.8.3.1 (2) of the present procedure;
3) read the initial DE Н
нj
value from the dosimeter;
4) create from the reference source
137
Cs DER
oj
H
.
equal to 0.08 mSv/h in the point
coinciding with the geometric center of the detector, irradiate the dosimeter during the time period
T equal to 60 min;
5) read the final DE value after completion of irradiation;
6) calculate the intrinsic relative error of measurement Q
j
, %
,
by formula
 
100
.
.




TH
THHH
Q
oj
oj
HjKj
j
, (5.7)
where Н
кj
– finite DE value, mSv/h;
Н
нj
– initial DE value, mSv/h;
oj
H
.
– reference DER value at the check point, mSv/h;
Т – time of the irradiation, h;
7) repeat measurements item 1) -6) for the point at reference DER equal to 8.0 mSv/h and
800.0 mSv/h during 30 min;
8) calculate dosimeter’s intrinsic relative error confidence limit for each check point by
formula (5.4), with the confidence probability 0.95, where Q
o
– calibration installation’s error, %;
Q
j
– relative error of the DE value measurement, calculated by formula (5.7), %. To compare the
calculated value , calculated by formula (5.4) with an acceptable value 
acc
 20 %.
The instrument passes the test if   
acc.
.
6 Disposal
Dosimeter constitutes no danger to life, health and the environment, so disposal is
performed in a regular way.

Polimaster PM1610B Specifications

General

Brand	Polimaster
Model	PM1610B
Category	Measuring Instruments
Language	English