Wireless Geiger-Müller Sensor

Working Principle

The Geiger-Müller counter is designed based on the ionizing property of radiation in gases and is one of the most commonly used wire-type counters. A metal tube, sealed at both ends with insulating material, contains low-pressure gas. A metal wire is installed along the tube's axis, and a certain voltage (slightly lower than the breakdown voltage of the gas inside the tube) is applied between the wire and the tube wall using a battery. When no radiation passes through the tube, the gas does not discharge. When a high-speed particle of a certain type of radiation enters the tube, it ionizes the gas atoms inside, releasing several free electrons that move toward the metal wire under the applied voltage. These electrons further ionize other gas atoms along their path, releasing more electrons. The increasing number of electrons successively ionize more gas atoms, eventually rendering the gas inside the tube conductive and causing a rapid gas discharge between the wire and the tube wall. This generates a pulse current that is fed into an amplifier and received by a counter connected to the amplifier's output. The counter automatically records each discharge event corresponding to a particle entering the tube, thereby detecting the number of particles.

Measurement Capabilities

Range: 0–40 Kcpm, Resolution: 0.04 cpm

Structure and Functions

1. Equipped with a 1.8-inch color LCD screen.
2. Configured with five functional buttons for simple and convenient operation.
3. Supports high-speed USB data transfer for rapid communication with data acquisition devices.
4. Enables wireless communication with experimental terminals.
5. Includes a built-in large-capacity removable battery.
6. Provides a sensor interface with snap fasteners, compatible with standard sensors for combined experiments.
7. Includes a fixed mount for integration with traditional equipment on an iron stand.
8. The sensor supports iOS, Android, Windows, and other operating systems.

Built‑in AI functions open new possibilities for data analysis, automated processing of results, and the creation of interactive experiments.