Electronic and passive radon detectors compared

There are many ways to detect (monitor) and record radon levels in a property. Two of the most cost effective and easily usable types of radon detector are passive detectors and electronic monitors. This section aims to highlight the best times to use these two methods.

Passive detectors

Passive detection provides a standardised result on printed paper. It is used for completing standardised tests for radon in properties in the UK. Passive detectors do not have a readable display, and need to be sent to a laboratory for analysis and results, so results can be delayed by weeks at times. A passive radon detector can be placed for periods from 7 days up to 1 year, but usually they are placed for a minimum of 3 months to reduce errors and allow an annual average calculation to be applied.

At 7 days a broad picture of radon levels can be achieved with a result reflecting a low, medium or high radon prognosis, as statistically there is a large variation around the mean (50%). At 1 month the reading could be considered a realistic reflection of radon levels at the time of measurement. However, it is recommended that a radon detector be placed for the standard measurement period of three months to obtain standard, comparable results for a property owners records, which will be seasonally corrected (annual averaging).

Detectors are normally placed in strategic locations to obtain averaged results. For example, in a house, two detectors will be placed, one in a living room and one in a bedroom. The detectors are analysed at a laboratory and results are sent to the property owner, with an averaged result calculated from the two sets of raw data. UK Radon Ltd can supply radon detectors, with a results analysis, at competitive rates.

Electronic monitors

Electronic monitors can begin giving radon measurements on their display panel after 5-6 hours. They produce a clear reading that the user can read instantly, and is updated hourly. However, they do not produce a paper document that can be used for legal transactions, and are not seasonally corrected. They are not used as the standard method for recording radon levels in a property in the UK.

The best use for electronic monitors is to detect the primary sources of radon within a building, or to determine if newly fitted radon installations are having an impact on radon levels. These devices can also give companies a quick and cheap indicator of radon levels that can complement long term detectors when establishing whether there is a radon risk in a workplace.

UK Radon Ltd can hire and supply electronic radon monitors.

Electronic radon monitor

Electronic detector

Passive radon detectors

Passive detectors

UK Radon Ltd monitoring services and products

UK Radon Ltd can offer a range of detection and monitoring services for companies and property owners. Detectors and monitors can be placed in various locations and for varying periods of time to suit property owner’s needs. UK Radon Ltd can supply an electronic radon monitor for £189 or hire one for a month for £50 (requires a survey first), or supply passive detectors for £19.50 each – which cost £39 for a standard 3 month domestic test.