High quality and cheap geiger counter with has many functions, support four languages, home and industrial can be used. Operating humidity between 10% RH and 80% RH.

Feature:

• High Sensitivity. Professional counter, core radiation detector with built-in acoustic and visual signals for capturing the extent of radiation.
• Radiation detection. The nuclear radiation detector uses a complex GM tube as the core sensor, with small error and high precision.
• Security monitoring. Developed a nuclear electromagnetic radiation tester with data display, memory and output functions.
• Portable and lightweight. The user interface is small and portable, concise and easy to use, small and portable.
• Wide range of applications. Professional portable geiger radiation protection and high precision and stability of products, widely used in material testing and radiation testing.

Specification:

• Model: RDDLZ-JD3001
• Detection Ray: X-rays γ Ray
• Accuracy of Measurement: ±15%
• Operating Temperature: 0 ℃ ~ 50 ℃
• Operating Humidity: 10% RH ~ 80% RH
• Weight: 0.5 kg
• Response Time: 3s
• Dose Rate Response: ＜±20%（1 μSv/h~99.99 mSv/h）
• Energy Response: ＜±30%（48 keV ~ 1.3 MeV）
• Relative Inherent Error: ＜±15%（137 Cs ）
• Precision: Electric field: 1 V/m; Magnetic field: 0.01 μT
• Alarm Threshold Value: Electric field: 50 V/m; Magnetic field: 0.3 μT

Geiger Counter Structure:

Tips: How Does a Geiger Counter Work?

A Geiger counter consists of a geiger mueller tube (the sensing element which detects the radiation) and the processing electronics, which displays the result. The tube is filled with an inert gas such as helium, neon, or argon at low pressure, to which a high voltage is applied. The tube briefly conducts electrical charge when a particle or photon of incident radiation makes the gas conductive by ionization. The ionization is considerably amplified within the tube by the Townsend discharge effect to produce an easily measured detection pulse, which is fed to the processing and display electronics. This large pulse from the tube makes the Geiger counter relatively cheap to manufacture, as the subsequent electronics are greatly simplified. The electronics also generate the high voltage, typically 400–900 volts.