Gamma radiation detector

Scintillator, NaI(Tl) Ø63x160 mm

Registered gamma radiation energy range

50 keV ... 3 MeV

Specific activity measurement range for 4π measurement geometry:

     ¹³⁴Cs

10 ... 1·10⁵ Bq/kg

     ¹³⁷Cs

10 ... 1·10⁵ Bq/kg

     ⁴⁰K

150 ... 1·10⁴ Bq/kg

Intrinsic relative error of ¹³⁴Cs, ¹³⁷Cs and ⁴⁰K specific activity measurement

±20% max.

Ambient gamma radiation dose equivalent rate measuring range

0.01 ... 50 ?Sv/h

Intrinsic relative error of ambient dose equivalent rate measurement

±20% max.

Energy dependence relative to 662 keV (¹³⁷Cs)

±20% max.

Sensitivity to ¹³⁷Cs gamma radiation

4750 cps/?Sv?h^-1

Typical resolution at 662 keV (¹³⁷Cs)

9.5% max.

Maximum input statistical load

≥5·10⁴ s^-1

Number of ADC channels

512

Operation mode setup time

1 min

Integral nonlinearity

1% max.

Continuous run time in normal conditions

≥9 h

Measurement instability during continuous service

1% max.

Working temperature range

-20°C ... +50°C

Relative air humidity with temperature ≤35°C without condensation

≤95 %

Protection class

IР67

GPS

GPS-receiver, integrated into HPC. Positioning accuracy ≥ 3 m

Connection to PC

USB

Overall dimensions, weight

Hand-held PC

100x250x60 mm, 0.5 kg

Detection unit

125x140x625 mm, 7 kg