The GAMMA-SCOUT Standard is a German-engineered, hand-held Geiger counter built for professionals who need continuous, reliable radiation monitoring. Whether you work in a research lab, a university, a pharmaceutical facility, or an environmental survey team, this device gives you a straightforward way to measure alpha, beta, and gamma radiation with a single instrument. It runs day and night, silently logging data in the background, and its energy-efficient design means you won’t be replacing batteries every few months.

Manufactured by GAMMA-SCOUT GmbH & Co. KG in Schriesheim, Germany, every unit leaves the factory individually tested against a Cs-137 reference source under supervision from the Institute of Radiation Protection. That is not a batch-level check — each device must fall within a 5% confidence interval before it ships.

What It Measures

The device uses a Geiger-Müller end-window counting tube (stainless steel housing, mica window of 1.5–2.0 mg/cm²) to detect three types of ionizing radiation simultaneously:

Alpha (α) — from 4 MeV | Beta (β) — from 0.2 MeV | Gamma (γ) — from 30 keV

A physical selection switch on the side lets you choose which radiation types to include. Set it to the centre position to measure gamma only (an aluminium shield blocks alpha and beta). Slide it left to add beta, or right to open the window completely for all three. For routine environmental monitoring, keeping the switch at centre is recommended — it also protects the delicate mica window from accidental damage.

Key Capabilities

Real-time dose rate display — The LCD refreshes the current reading every 2 seconds, shown both as a numeric value in μSv/h and as a logarithmic bar chart. A secondary press shows the 24-hour average dose rate (midnight to midnight).

Wide calibrated range — The calibrated measurement range spans 0.01 to 5,000 μSv/h. For context, typical natural background radiation in most environments falls between 0.1 and 0.2 μSv/h. If radiation exceeds 1,000 μSv/h, the display shows “Overflow.”

Cumulative dose tracking — Beyond the instantaneous rate, the device doubles as a dose meter, accumulating total exposure over time. The dose can be displayed in either Sievert or Rem, depending on your preference.

Pulse counting mode — When you need raw counts rather than dose rate conversions, switch to Geiger counter mode. You can set a custom counting interval in seconds, minutes, or hours, and the device will report total pulses for that window.

Pulse rate mode — This calculates the average counts per second (cps), automatically extending the measurement window up to 4,096 seconds for greater statistical accuracy.

Data Logging & Storage

The device continuously logs detected pulses in its internal 256 KB memory, which holds up to 32,000 data points. How long that memory lasts depends on the logging interval you choose:

The factory default is one reading per week. Most lab users set it to 2-hour intervals, which provides nearly 7.3 years of uninterrupted logging without ever needing to clear memory. When only 256 bytes of space remain, the device automatically switches to weekly intervals to preserve data integrity.

Data Transfer & Software

All logged data can be downloaded to a computer via the included USB cable using the GAMMA-SCOUT TOOLBOX software. The software is compatible with Microsoft Windows (Vista through Windows 10, 32-bit and 64-bit) and Mac OS X. Once transferred, data appears in a list format for analysis, graphing, and archiving. You can clear the device memory after download to start fresh.

Power & Battery

The Standard model runs on a 2.7–3.7 V lithium thionyl chloride cell. With a power draw of less than 10 microamperes under normal environmental radiation, the battery is designed to last for years without replacement. Data is retained in memory even if the battery drains completely.

Note: The battery is soldered to the circuit board — this is intentional, not a design limitation. At the extremely low current draw of this device, plug-in contacts would suffer oxidation and cause intermittent power loss. If you need a rechargeable power supply, consider the GAMMA-SCOUT Rechargeable model instead.

Physical Specifications

What’s in the Box

Each GAMMA-SCOUT Standard ships with the main device, a USB data cable, a CD-ROM containing the TOOLBOX software, a printed user manual, and an individual calibration certificate confirming the unit passed its 5% confidence interval test.

Standard vs. Other GAMMA-SCOUT Models

The GAMMA-SCOUT line includes four models. The Standard covers all core measurement and logging functions described above. The Alert model adds an audible ticker (clicks with each detected pulse) and a user-programmable dose rate alarm — if radiation exceeds your set threshold, the device beeps. The Rechargeable model includes all Alert features plus a USB-rechargeable battery. The Online/Real Time model adds live data streaming to a connected PC at user-defined intervals.

If your work involves areas where radiation may suddenly spike above safe thresholds, the Alert or Rechargeable versions are worth considering. For routine environmental monitoring and periodic data download, the Standard model provides everything you need.

Who This Is For

This device suits laboratory safety officers tracking ambient radiation, university researchers working with isotope samples, environmental monitoring teams conducting field surveys, quality control personnel in pharmaceutical or industrial settings, and anyone who needs a dependable, long-running radiation detector without the complexity of a full-spectrum spectrometer.

Made in Germany — Backed by Calibration

Every GAMMA-SCOUT Standard is manufactured and calibrated in Germany. The calibration process is supervised by a state university institute, and each unit is tested for 72 hours against a master reference adjusted to a gauged Cs-137 emitter. The resulting calibration certificate ships with the device. For ISO-certified facilities that require periodic recalibration, GAMMA-SCOUT offers this service directly.