Polimaster PM1621M User Manual

6
Discreteness of DE accumulation
time indication 1 h.
7 The instrument provides inputting, storage in a non-volatile memory and continuous
control of two threshold DER and DE levels within the whole measurement range. When
the preset first and second DER and DE alarm threshold levels are exceeded the
instrument produces audible, vibration and visual (blinking red LED) signals.
Discreteness of threshold level setting Unit of lower-order indicated position.
8
Registered energy range 0.01 – 20 МeV.
Energy response relative to 0.662
MeV (
137
Cs) (see Attachment D), no
more than
± 30 %.
9 Anisotropy (see Attachment C)of the device for each energy does not exceed values (in
%) presented in Table 1.2, when the device is rotated in the horizontal plane
(Attachment B, figure B.1) and values (in %) presented in Table 1.3, when the device is
rotated in the vertical plane (Attachment B, figure B.2).
Table 1.2
Energy of gamma radiation, MeV
Anisotropy
A
ngle of detection relative to the
direction of graduation, °
0.059 0.662 1.25
0 0 0 0
15 ±5 ±5 ±5
30
±10 ±10 ±10
45 ±20 ±15 ±15
60 ±40 ±20 ±20
-15 ±5 ±5 ±5
-30 ±10 ±10 ±10
-45 ±20 ±15 ±15
-60 ±40 ±20 ±20
Table 1.3
Energy of gamma radiation, MeV
Anisotropy
Angle of detection relative to
the direction of graduation, °
0.059 0.662 1.25
0 0 0 0
15 ±5 ±5 ±5
30
±10 ±10 ±10
45 ±20 ±15 ±15
60 ±40 ±20 ±20
-15 ±5 ±5 ±5
-30 ±10 ±10 ±10
-45 ±20 ±15 ±15
-60 ±40 ±20 ±20
10
Coefficient of variation (deviation of the
instrument’s readings caused by statistic
fluctuations) at DER measurement at a
confidence coefficient 0,95, no more than
±15 %.
8

Polimaster PM1621M Specifications

General

Brand	Polimaster
Model	PM1621M
Category	Measuring Instruments
Language	English