A low background alpha/beta radioactivity detector is a precision instrument used to measure the intensity of low-level alpha and beta radioactivity. Can be used for measuring total alpha and total beta radioactivity in water, soil, building materials, minerals, aerosols, food, etc; Suitable for low-level alpha/beta radioactive intensity measurement in radiation protection, environmental protection departments, medical, biological, agricultural, research institutes, and higher education institutions. The LM-02 dual channel low background alpha/beta radioactivity detector is a four channel measuring device.

The LM series radioactive detector has stable performance, compact design, and easy operation. Using a large-area thin window flow proportional counter tube as the detector (Ø 60mm), a specially designed shielded counter tube is used to counter match with the measuring counter tube to reduce the interference of surrounding environmental radioactivity on the measurement. Use carefully selected "old lead" to create a thick lead chamber to shield against external radiation. Therefore, the radioactive detector has high detection sensitivity and low background. Good energy response, with a detection efficiency of ≥ 40% for 14C low-energy beta rays. Superior to similar detectors using semiconductor and scintillator probes. The LM series detector adopts computer numerical control operation and does not have external switch knobs. Through program control, the flat characteristics of the counting tube can be self detected, the working point of the counting tube can be set, the background counting rate of the instrument can be self detected, and the background count can be deducted during sample detection to correct the results. By combining the use of standard sources, the detection efficiency of the instrument can be self calibrated. Automatically process detection results. The specific radioactivity of the tested sample, such as Bq/L or Bq/Kg, can be directly obtained.