Find HS Code and trade information for geiger detector

Geiger Detector

A Geiger detector, also sometimes called a Geiger-Müller counter, is an instrument used to detect and measure ionizing radiation. It relies on the ionization of gas to operate, and is widely used in radiation survey meters.

Material & Construction

The core component of a Geiger detector is the Geiger-Müller tube. This is typically a sealed tube filled with an inert gas such as argon, neon, or helium, often with a quenching gas added (like halogen or organic vapors).

• Tube Wall: Usually made of glass or metal, serving as the cathode. Some detectors use thin mica windows to allow detection of low-energy radiation like alpha particles.
• Anode: A thin wire running along the axis of the tube.
• High Voltage Supply: A voltage is applied between the cathode and anode.
• Electronics: Circuitry to process the signal from the tube and display the radiation count.

Purpose & Function

The primary purpose of a Geiger detector is to detect ionizing radiation, which includes:

• Alpha particles: Relatively massive, positively charged particles.
• Beta particles: High-energy, high-speed electrons or positrons.
• Gamma rays: High-energy photons.
• X-rays: High-energy photons.

How it Works:

1. When ionizing radiation enters the tube, it collides with gas atoms, knocking electrons loose (ionization).
2. These freed electrons are accelerated towards the anode by the high voltage.
3. As they accelerate, they collide with other gas atoms, creating an avalanche of ionization.
4. This avalanche creates a short pulse of current.
5. The electronics detect these pulses and count them, providing a measure of the radiation intensity.

Usage Scenarios

• Radiation Safety: Monitoring radiation levels in nuclear facilities, hospitals, laboratories, and the environment.
• Geological Surveys: Detecting radioactive minerals.
• Industrial Applications: Gauging thickness, level, and density using radioactive sources.
• Homeland Security: Detecting illicit radioactive materials.
• Education & Research: Demonstrating radioactive decay and measuring radiation.
• Contamination Detection: Identifying areas with radioactive contamination.

Common Types

• Pancake Geiger Counters: Feature a large, thin pancake-shaped detector for increased sensitivity, particularly to alpha and beta particles.
• End-Window Geiger Counters: Have a thin window at one end of the tube to allow detection of low-energy radiation.
• Gamma Scout Geiger Counters: Designed specifically for detecting gamma radiation.
• Digital Geiger Counters: Provide a digital display of radiation counts and often include features like data logging and alarms.
• Survey Meters: Portable instruments incorporating a Geiger-Müller tube and display, commonly used for general radiation surveys.

A Geiger detector is an apparatus used for measuring or detecting ionizing radiations. Based on the provided information, several HS codes may be relevant:

• 9030100000: This code covers Oscilloscopes, spectrum analyzers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionizing radiations; parts and accessories thereof: Instruments and apparatus for measuring or detecting ionizing radiations. This is a broad category encompassing Geiger detectors as instruments specifically designed for this purpose.

  • 90: Chapter – Electrical machines and apparatus; parts thereof.
  • 30: Heading – Instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 9028.
  • 100000: Subheading – Instruments and apparatus for measuring or detecting ionizing radiations.

• 9022298000: This code covers Apparatus based on the use of alpha, beta, gamma or other ionizing radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus: For other uses: Other. If the Geiger detector is not for medical, surgical, dental, or veterinary uses, this code may apply.

  • 90: Chapter – Electrical machines and apparatus; parts thereof.
  • 22: Heading – Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionizing radiations.
  • 298000: Subheading – For other uses: Other.

• 9022909500: This code covers Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionizing radiations, whether or not for medical, surgical, dental or veterinary uses, including radiography or radiotherapy apparatus, X-ray tubes and other X-ray generators, high tension generators, control panels and desks, screens, examination or treatment tables, chairs and the like; parts and accessories thereof: Other, including parts and accessories: Other: Parts and accessories: Other: Other. If the Geiger detector is supplied as parts or accessories, this code may be applicable.

  • 90: Chapter – Electrical machines and apparatus; parts thereof.
  • 22: Heading – Apparatus based on the use of X-rays or of alpha, beta, gamma or other ionizing radiations.
  • 909500: Subheading – Other, including parts and accessories: Other: Parts and accessories: Other: Other.

According to the provided reference material, the HS code options related to 'geiger detector' are limited, with only the following 3 found.