Threshold alarm unit for radiactive aerosols IRAA–01D

Purpose

• Continuous measurement of volumetric activity of radioactive aerosols due to artificial alpha-emitting nuclides
• Sound/light alarm in the event that the measured values of volumetric activity exceed the preset threshold levels

Features

• Stationary installation at the working area air monitoring points
• Connection to the pump unit BN-01
• Or another external sampling device
• Service interface USB for diagnostics, adjustment and calibration

Physical characteristics

• Measurement range of volumetric activity: 1,0 ÷ 2,0·105 Bq/m³
• Energy range of alpha particles detection: 3,0 ÷ 8,0 MeV
• Sensitivity coefficient for particles within energy range based on ²³⁹Pu: Not less than 0.02
• Intrinsic background of alarm unit: not more than 1,0·10-1 Bq/m³
• Air flow rate through the filter: 20 ÷ 40 l/min
• Measurement range of air volume pumped throughthe filter: 10 ÷ 100 000 l/min
• Power supply: 220 V, 50 Hz

Electrical characteristics

• Power consumption: 50 V・A

Mechanical characteristics

• Overall dimensions: 350×156×482 mm
• Weight: not more than 6 kg