Alpha Beta Particulate Monitor UDAS-201

For supplies to the Russian Federation

Certificates:

Procedure: Metrological certificate MVI №45540.8U134 dated 03.07.2008;
radiation monitoring method certificate №40090.0ГА214

Purpose:
continuous measurement of alpha and beta aerosol volumetric activity in air of rooms and ventilation system at NPPs, radiochemical plants and other radiation hazardous sites, where ionizing radiation sources are used.

Alpha Beta Particulate Monitor UDAS-201 (.pdf)

 

Main features and functions:

  • measurement of alpha and beta aerosol volumetric activity in air, and data display (depending on version) or data output via RS485
  • automatic gamma-background compensation
  • automatic self-testing, alarm signal generation, alarm signal display (depending on version) and alarm output viaRS485
  • three alarm threshold levels (warning level and two emergency levels)
  • alarm of measured value "minor change"
  • "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
  • pumped air monitoring and consumption measurement
  • unified and replaceable components for all "RADSYS" system devices

Performance specification

Measurement range

1×10-2 ÷ 2×104 Bq/m3 (alpha-radiation)
1×100 ÷ 1×106 Bq/m3 (beta-radiation)

Energy window

4,2 ÷ 5,5 MeV (alpha)
0,08 ÷ 2,00 MeV (beta)

Operating temperature range

0 to +55 °С

Operating pressure range

84б0 to 106б7 kPa 

Operating humidity range

up to 98 % at +35 °С

Relative error

not more than 50 %

Seismic stability

up to 8 points

Protection index

IP65

Dimensions and weight

DU: 511x228x260 mm; not more than 47,5 kg
LPDU: 390х200х190 mm; not more than 8 kg
LPU: 326х196х106 mm; not more than 4,5 kg
with frame: 784x745x440 mm; not more than 160 kg

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

Power supply

220 V

Power output

50 VA

Options

Power supply 24 V
Display and buzzer
Two two-step or one-step relays
Mounted at a frame with terminal block