Spectrum Analysis Monitor UDZG-201

For supplies to the Russian Federation


MVI:Attestation certificate №40090.8В015 dated 04.03.2008

measurement of gamma-emitting radionuclide volumetric activity in liquid

Main features and functions:

  • measurement of radionuclide volumetric activity in liquid, and data display (depending on version) or data output via RS485
  • work in spectrometer mode
  • automatic spectrum stabilization against temperature changes
  • adjustment according to required radionuclide composition
  • automatic self-testing, alarm signal generation, alarm signal display and alarm output via RS485
  • two alarm thresholds programming (warning and emergency thresholds), signal alarm in case of considerable measured value variation
  • "dry-contact" signal of threshold value is exceeded
  • standard (0...20mA / 4...20mA) analog output for measured data transfer to external systems
  • standard (0...20mA / 4...20mA) analog input for external device connection and its measured data consideration in algorithms
  • unified and replaceable components for all "RADSYS" system devices

Performance specification

Measurement range

1,0×103 ÷ 3,7×108 Bq/m3

Energy window

0,15 ÷ 3,00 MeV

Operating temperature range

0 to +55 °С

Operating pressure range

86,0 to 106,7 kPa 

Operating humidity range

up to 98 % at +35 °С

Relative error

30 %

Seismic stability

up to 8 points

Protection index


Dimensions and weight

DU: (76,2 x 50,8 mm): H 281, Ø 148, 1,5 kg
LPDU: 370х196х187, not more than 8 kg

Corresponds to 3N class requirements according to NP-001-97 (OPB-88/97)

Power supply

220 V

Power output

35 VA


Power supply 24 V
Display and buzzer
Detecting unit with 1"x1,25" crystal
Detecting unit with 3"x2" crystal
Detecting unit with 3"x3" crystal
Three one-step relays
Metalwork for pipeline, tank and reservoir installation