Polimaster PM1610B, Руководство по эксплуатации

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5.7 Pre-verification procedure
5.7.1 Verification procedure of the instruments РМ1610, РМ1610А, РМ1610-01 and
РМ1610А-01 is carried out with fully charged accumulator batteries. Verification procedure of the
instruments РМ1610B and РМ1610B-01 is carried out with new batteries with guaranteed expira-
tion date.
5.7.2 The following pre-verification procedures are required:
- study carefully Operation Manual before working with the Instruments to prevent errors and
ensure safe operation.
- prepare Instrument for operation according to the item 2.1.3 of the Instrument Operation
Manual.
- prepare auxiliary equipment for verification procedure in accordance with their technical
documentation.
5.8 Verification Procedure
5.8.1 External examination
5.8.1.1 External examination must prove that instrument meets following requirements:
- delivery kit corresponds to Operation Manual requirements;
- there is a note in the Operation Manual about primary verification or certificate of recent
verification;
- there are clear markings on the Instrument surface;
- there is no dirt or mechanical damage that can affect Instrument operation.
5.8.2 Testing
5.8.2.1 Check instrument operability according to according to the item 2.1.4 of the Instru-
ment Operation Manual.
5.8.2.2 Set the maximum DER and DE alarm threshold values according to the item 2.2.7.5
of the Instrument Operation Manual.
5.8.3 Determination of the metrological characteristics
5.8.3.1 Calculate permissible intrinsic relative error of the DER measurement in the follow-
ing way:
1) enter the DER measurement mode;
2) fix the instrument on the phantom, the backside facing the phantom. Place the dosimeter
with the phantom on the dosimeter calibration assembly with
137
Cs gamma radiation source so that
the calibration direction coincides with the direction of radiation flux axis and the radiation flux
axis passes through the geometric center of the detector, Figure 5.1. The geometric center of the
detector is marked with ”x”;
3) in not less than 600 s after placing the instrument with phantom on the dosimeter
calibration assembly take five readings
bi
H
.
at intervals of not less than 150 s. Calculate the average
background value
b
H
.
, by formula



5
1
. .
5
1
i
bi b
H H , (5.1)
where
bi
H
.
– i-th value of the  -background readings, μSv/h;