Polimaster PM1621 Manual de usuario

X-RAY AND GAMMA RADIATION PERSONAL DOSIMETERS

РМ1621

Models:

РМ1621

РМ1621А

РМ1621М

РМ1621МА

OPERATING MANUAL

CONTENTS

1 DESCRIPTION AND OPERATION OF THE DOSIMETER..............................................4

1.1 Application Range ......................................................................................................4

1.2 Delivery kit..................................................................................................................5

1.3 Specifications .............................................................................................................6

1.4 Design and theory of operation.................................................................................11

2 USE OF THE DOSIMETER............................................................................................15

2.1 General guidelines....................................................................................................15

2.2 Safety instructions ....................................................................................................15

2.3 Preparation for use...................................................................................................15

2.4 Use of the dosimeter.................................................................................................15

3 MAINTENANCE .............................................................................................................25

4 TROUBLESHOOTING....................................................................................................26

5 VERIFICATION METHOD..............................................................................................27

5.1 Introduction...............................................................................................................27

5.2 Verification procedures and tools .............................................................................27

5.3 Verification officers’ qualification requirements.........................................................27

5.4 Safety requirements..................................................................................................27

5.5 Verification conditions...............................................................................................28

5.6 Pre-verification procedure.........................................................................................28

5.7 Verification procedure...............................................................................................28

5.7.1 External examination of the instrument..................................................................28

5.7.2 Carrying out verification (testing)...........................................................................28

5.7.3 Metrological examination.......................................................................................28

6 STORAGE AND SHIPPING ...........................................................................................31

7 WARRANTY...................................................................................................................32

ATTACHMENT A

Typical instrument anisotropy (data are normalized to the calibration direction 0o)..........33

ATTACHMENT B

DIAGRAM OF DOSIMETER ROTATION TO MEASURE ANGULAR RESPONSE ..........34

ATTACHMENT C

OVERALL DIMENSIONS, EFFECTIVE CENTER OF THE DOSIMETER DETECTOR....35

This Operating Manual combined with the logbook and passport describes the design,

operation and use of the X-ray and gamma radiation personal dosimeter:

-PM1621;

-РМ1621А;

-РМ1621М;

-РМ1621МА

(further dosimeter or instrument).

The Operating Manual includes the general description, specifications of the

dosimeter, as well as some other information necessary for the proper operation of the

dosimeter and a full realization of its possibilities.

During manufacturing of the dosimeter some changes may be introduced in its

electrical scheme and construction that do not influence the specifications and

metrological parameters and, therefore, may be not specified in this manual.

1 DESCRIPTION AND OPERATION OF THE DOSIMETER

1.1 Application Range

Dosimeter is designed for:

-continuous measurement of the personal dose equivalent (further dose

equivalent or DE) of external gamma and X-ray (further - photon) radiation Hp(10);

-continuous measurement of the time of the DE accumulation;

-continuous measurement of the personal dose equivalent rate of external photon

radiation

)10(

(further dose equivalent rate or DER);

-communications of information accumulated and stored in a non-volatile memory

through infra-red (IR) communication channel (the protocol is compatible with IrDA

interface) into the personal computer (PC) using the internal or external IR adapter.

Dosimeter is manufactured in four models:

- X-ray and gamma radiation personal dosimeter РМ1621;

- X-ray and gamma radiation personal dosimeter РМ1621А. Differs from РМ1621

model by extended DER measurement range;

- X-ray and gamma radiation personal dosimeter РМ1621М. Differs from РМ1621

model by search mode and integrated vibro and light alarm;

- X-ray and gamma radiation personal dosimeter РМ1621МА. Differs from РМ1621

model by extended DER measurement range, search mode and integrated vibro and light

alarm.

The dosimeters may be used independently or as a part of a system for everyday,

efficient and emergency dosimetric control of the personnel and people at sites, production

facilities and units, where there is a potential or real risk of exposure to external X-ray and

gamma radiation by officers of customs and border services, personnel of nuclear

facilities, radiological and isotope laboratories, officers of the emergency services, civil

defense, fire brigades, police, as well as in other spheres of use where there is a necessity

in measurement of the personal dose equivalent and personal dose equivalent rate,

alarming of the exceeding of the preset dose and dose rate levels, information about the

dose accumulation and conduct of the dose rate in time, as well as association of the

measured parameters with an individual, systematization and complex analysis of the

accumulated dosimetric information.

Operating conditions:

-ambient air temperature from - 40 up to 60 C;

-relative humidity up to 98% at the temperature 35 C;

-pressure from 84 up to 106,7 kPa.

Attention! LCD will still continue to indicate the readings when the

instrument is heated up +50 С.

1.2 Delivery kit

1.2.1 Delivery kit of the dosimeter corresponds to the Table 1.1.

Table 1.1

Item, type

Quantity, pcs

РМ1621

РМ1621А

РМ1621М

РМ1621МА

X-ray and gamma radiation

dosimeter –РМ1621

X-ray and gamma radiation

dosimeter - РМ1621А

X-ray and gamma radiation

dosimeter - РМ1621М

X-ray and gamma radiation

dosimeter - РМ1621МА

Accessories set:

- IR channel adapter 1)

- Power supply element

РANASONIC POWER LINE LR6

AA2; 5) or Power supply element

Energizer L91BP-2 AA3; 5)

-software

1 CD

Operating manual 4)

Cover 5)

Packaging

1) Supplied by customer request, by separate order;

2) Used within the temperature range of minus 20 plus 60°С. Usage of other batteries with similar

parameters is allowed;

3) Used within the temperature range of minus 20 plus 60°С. Usage of other batteries with similar

parameters is allowed;

4) Methods of calibration are included;

5) Supplied on agreement with a customer (buyer).

1.3 Specifications

Operating mode:

- 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");

- PC data exchange

DER measurement range

- for РМ1621, РМ1621М

0.1 Sv/h –100 mSv/h

- for РМ1621А, РМ1621МА

0.1 Sv/h –1.00 Sv/h

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 + К1/ + К2) %,

where DER value, mSv/h;

К1–coefficient 0.0015 (mSv/h);

К2–coefficient 0.01 (mSv/h)-1

DE measurement range

1.0 Sv 9.99 Sv

Maximum permissible intrinsic relative

error of DE measurement

15%

DE measurement range

0.01 Sv –9.99 Sv

Indication sub-ranges:

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

1 h

8The dosimeter provides inputting, storage in a non-volatile memory and continuous

control of two DER and DE threshold levels within the whole measurement range, various

audible alarms, as well as vibro and light alarms (additionally for РМ1621М, РМ1621МА)

at exceeding of the preset first and second threshold levels.

Discreteness of threshold level setting

Unit of lower-order indicated position

Registered energy range

10 keV –20 МeV

Energy response relative to

0.662 MeV (137Cs), no more than

30%

Coefficient of variation (deviation of the

dosimeter’s readings caused by statistic

fluctuations) at DER measurement at a

confidence coefficient 0,95, no more

than

10%

11 Anisotropy (type dependence is given in Attachment A) of the Dosimeter for each

energy does not exceed values (in %) presented in Table 1.2, when the Dosimeter is

rotated in the horizontal plane (Attachment B, figure B.1) and values (in %) presented in

Table 1.3, when the Dosimeter is rotated in the vertical plane (Attachment B, figure B.2).

Table 1.2

Angle of detection relative to

the direction of graduation,

Energy of gamma radiation, MeV

Anisotropy

0.059

0.662

1.25

±5

±20

±15

±40

±20

-15

±5

-30

±10

-45

±20

±15

-60

±40

±20

Table 1.3

Angle of detection relative to

the direction of graduation,

Energy of gamma radiation, MeV

Anisotropy

0.059

0.662

1.25

±5

±20

±15

±40

±20

-15

±5

-30

±10

-45

±20

±15

-60

±40

±20

Maximum permissible additional relative

error of DER measurement:

- at temperature variations from minus

40 to plus 60 С

10%

- at relative humidity of ambient air 98 %

at 35 °С

10%

- at power voltage variations from

nominal value to limiting voltage values

- 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

3-5 s

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

5 s

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

PC communication

- 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.

Sound pressure level at the distance of

20 cm (for РМ1621М, РМ1621МА), no

less

85 dB (А).

Power supply

1.5 (+ 0.1; minus 0.4) V (one AA type

battery)

Period of continuous operation of the

dosimeter from one battery, using LCD

backlight not more than 20 s/day,

audible alarm –not more than 20 s/day

and at an average value of the

measured DER up to 0.3 Sv/h:

- at a temperature from 0 up to 60 C

12 months

- at a temperature minus 40 C, at least:

6 months

Protection degree of the dosimeter’s

case

IP67

The dosimeter is proof against the

action of:

- temperature of an ambient air from

minus 20 up to plus 60 C with indication

of measurement results on LCD;

- temperature of an ambient air from

minus 40 up to minus 20 C without

indication of measurement results on

LCD but with recording of measurement

results in a non-volatile memory;

- relative humidity of an ambient air up

to 98 % at 35 C;

- atmosphere pressure from 84 up to

106,7 kPa

The dosimeter is proof against:

- sinusoidal vibration in the frequency

range 5 - 35 Hz and bias amplitude for

frequencies lower than the transition

frequency 0.75 mm;

- shocks with acceleration 100 m/s2,

duration of shock pulse 2-50 ms, shock

rate is 60 - 180 shocks per minute

The dosimeter meets drop test against a

concrete surface from the height

0,7 m

The dosimeter is proof against the

action of static and variable magnetic

fields of strength

up to 400 А/m

The dosimeter is proof against the action of radio frequency electromagnetic fields up

to 30 V/m in the frequency range from 80 to 1000 MHz, from 800 to 960 MHz, from

1.4 to 2.5 HHz of strength (in electromagnetic emission envoronment of digital

radiophone)

- the dosimeter is proof against the action of electrostatic discharges, test level 3 (air

discharge, 8 kV, contact discharge 6 kV) , performance criterion В;

- dosimeter corresponds electromagnetic compatibility state standard of

manufacturing country (EN 55022:1998 (class B)) requirements by the level of emitted

radio noise

The dosimeter in a transport package is

proof against the action of:

- temperature from minus 50 up to plus

50 C;

- humidity up to 100 % at 40 C;

- shocks with acceleration 98 m/s2,

duration 16 ms;

- vibrations with frequency 5-35 Hz and

bias amplitude 0.75 mm

Weight, no more

РМ1621, РМ1621А

РМ1621М, РМ1621МА

0.165 kg

0,185 kg

Weight in package

not more than 0.4 kg

Overall dimensions, no more

not more than 87х72х39 mm

Reliability parameters:

- average full operating time

no less than 20000 h;

- average service life

no less than 10 years

- average time of recovery

no more than 60 min

Note –For addition information about dosimeter, please visit

www.polimaster.com.

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