Doza MKS-15D Snegir Benutzerhandbuch - Seite 4

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1.2.14 Measured values of AEDR and AED of gamma radiation, beta radiation flux densities

and count rate at the combined measurement (γ + β) are by turn displayed on the digital LCD display

(hereinafter – display) with indication of signs of information compliance. Measurement units, in

which the values are displayed:

AEDR of photon radiation ..................................................................... Sv×h

AED of photon radiation ........................................................................... Sv;

beta radiation flux density ................................................................ cm

count rate in the joint measurements (γ + β) radiation........................................... s

1.2.15 Dosimeter beeps when gamma ray or beta particle hits the detector and when the given

control threshold is reached.

1.2.16 Dosimeter is resistant to short-term, with duration 5 minutes, overloads of measured

radiation with AEDR of gamma radiation up to 0.02 Sv·h

maintains operability and basic relative measurement error within the limits stated in 1.2.3, 1.2.8.

1.2.17 Operating conditions:

operating temperature range .................................................. minus 20 to + 50 C;

maximum value of relative humidity ............................................... 90 % at +35 C;

atmospheric pressure .............................................................. 84.0 to 106.7 kPa;

content of the corrosive agents in the ambient air corresponds to the values in the Table 1.1.

Table 1.1

Type of atmosphere

Designation

Relatively clean

Industrial

1.2.18 Limits of complementary measurement error for all the physical quantities to be

measured due to deviation of temperature from normal value, per each 10 % .......................... ±5 %.

1.2.19 Limits of additional measurement error for all measured physical quantities at humidity

of ambient air of 95% and at temperature of 35 С ...................................................... ±10 %.

1.2.20 Dosimeter is resistant to shocks after a free fall from a height of less than 750 mm.

1.2.21 Degree of protection provided by dosimeter's casings against ingress of solid items

and water ............................................................................................................ IP52.

1.2.22 Dosimeter is stable against electromagnetic interference of 2 grade according to

IEC 61000-4-2-95, IEC 61000-4-3:2006, IEC 1000-4-8-93, IEC 1000-4-9-93.

1.2.23 Dosimeter is a fire-safe product with fire probability of fire not more than 10

1.2.24 Dosimeter withstands the exposure of decontamination solutions:

1) trisodium phosphate or sodium hexametaphosphate (any synthetic detergent) – 10 - 20 g/l

water solution;

2) 5 % citric acid solution in rectified alcohol.

1.2.25 Weight of the dosimeter, including batteries ........................................... 0.35 kg.

1.2.26 Overall dimensions of the dosimeter .......................................... 1247235 mm.

1.2.27 Mean time to failure .................................................... not less than 6000 hours.

1.2.28 Mean life time ................................................................. not less than 6 years.

Content of the corrosive agents

Sulfur dioxide gas not more than 20 mg/(m

(not more than 0.025 mg/m

chlorides not more than 0.3 mg/(m

Sulfur dioxide gas not more than 20 to 250 mg/(m

(not more than 0.025 to 0.31 mg/m

chlorides not more than 0.3 mg/(m

FVKM.412152.005RE

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