Alpha S

Portable radon monitor for air, soil and water

Portable and versatile radon monitor for fast and reliable measurements, aimed at radon mitigators and consultants. It is based on Bertin’s pulse ionisation chamber and is used for short checks and long-term monitoring at workplaces and in homes; with accessories it measures radon in soil and water and can trace radon entry points in buildings.

Detector type: Pulse ionisation chamber, 0.2 L1
Measurement range: Up to 200,000 Bq/m³ (5.4 nCi/L)1
Weight: <5.7 kg1

Download product sheet (PDF)All values with references – for tender documents

Specifications checked against the manufacturer’s documents on 2026-10-17

Manufacturer’s product page (opens in a new tab)

Overview

Nuclear power & nuclear technology Defence, security & preparedness Environmental monitoring & radiation protection Industry & quality control

Key features

Remote access via LAN, Wi-Fi and integrated web server
Rugged with long autonomy
Soil gas probe and Aqua Kit accessories

Specifications

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

Detector

Detector type	Pulse ionisation chamber, 0.2 L1
Additional sensors	T, P, H, Reloc, QA1

Measuring range

Measurement range	Up to 200,000 Bq/m³ (5.4 nCi/L)1
Detector sensitivity	1 cpm at 60 Bq/m³ (1.65 pCi/L)1

Connectivity & interface

Display	Graphic display with backlight1
Communication	LAN and Wi-Fi with integrated web server; direct wireless connection to smartphones or tablets1

Power & battery

Battery life	Up to 2.5 days1

Mechanical

Dimensions	300 × 249 × 196 mm1
Weight	<5.7 kg1
Housing material	PeliCase1

Ordering & accessories

Accessories	Soil gas probe for radon in soil (optional transport box, plastic hammer and pulling device; differential pressure sensor for soil permeability) and Aqua Kit with degassing module for water samples1

General

Measurement modes	Diffusion, flow or sampling1

The data comes from the manufacturer’s published documents. Manufacturers may change specifications; the current configuration and performance are confirmed in the quotation.

Sources

The number after each value refers to the source listed below. Values are as published by the manufacturer; the exact configuration is always confirmed in our quotation.

1
Alpha S
Publisher: Bertin TechnologiesProduct page Product page; Datasheet tab; Product page – Datasheet tab; Product page; Product page – Accessories tab Checked 2026-10-16