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Radon monitor

Functioning principle: the radon diffuses into the chamber, covered by felt.The felt absorbs the air-borne radon decay products.The radon activity is determined by measuringair the alfa-activity of 218Po (RaA), collected by the electric field on the

Radon monitor

Contacts and Location

Description

Functioning principle: the radon diffuses into the chamber, covered by felt.The felt absorbs the air-borne radon decay products.The radon activity is determined by measuringair the alfa-activity of 218Po (RaA), collected by the electric field on the surface of the semiconductor detector.

Specification

Measured quantity: air radon concentration. Instrument response: (0.8 counts/h)/(Bq/m3). Minimum concentration: activity determined with a statistical error equal to ± 20%: 30 Bq/m3 for 1- hour measurement. Maximum concentration: 150 kBq/m3 for 1-hour measurement. Sampling time: adjustable from 10 minutes to 24 hours. Effect of humidity: the change in the relative humidity from 50% to 90% decreases the sensitivity for –6.5%. The results are automatically corrected for the effect of humidity. Electronics: low power, protection of data. Power: battery powered- LiOn batteries with capacity of 2.5 Ah. Current: 0.4 mA during measurement, 6 µA during stand up. Operation time: from the battery: 210 days, from main adapter: limited by the memory capacity. Memory: a maximum of 16096 measurements i.e. results of 670- days monitoring can be stored in memory when 1-hour sampling time is adjusted. Thermometer: precision of ±0.5 °C. Manometer: range 750 - 1150 hPa, reading differentiation 0.1hPa, precision ±3hPa, temperature coefficient < 0.1hPa/°C. Hygrometer: range 10 - 95%, precision ±3%, the computer determines the absolute humidity (g/m3). Display: LCD, 2x 16-characters. Communication: RS232 standard PC port. Control: 3 buttons: "<", "Go",">", remote control by PC. Dimensions and Weight: 230 x 170 x 90 mm, cca 2.5 kg. Climatic conditions: temperature 5 to 40 °C, relative humidity 10-95%.

Services

Radon monitor

Funding Source

EU Structual Funds (ERAF, ESF) -
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