Professional Supplier of Laboratory Scientific Instruments

Nuclear Radiation Detection & Protection Equipment

DA Series Air Flow type Alpha-Beta Low-Level Counter

Contact Us
  • Fast And Safe Logistics
  • Get samples for free

Air Flow type Alpha-Beta Low-Level Counter

Product introduction           

DA series (1-8 channels) Low-Level α/β Counter is a precision instrument for measuring low-level α, β radioactive intensity. It can be used for the measurement of total α and total β radioactivity in water, soil, building materials, ores, aerosols, food, cetc. It is suitable for the measurement of low-level α/β radioactivity in radiation protection, environmental protection departments, medical, biological, agricultural, scientific research institutes and colleges and universities. The instrument is a series of products with 4 models and specifications: DA-101, DA-102, DA-104, DA-108. The instrument meets the verification requirements of JJG1100-2014 air flow proportional counter total α and total β measuring instrument.

Features

• Low background count, high particle detection efficiency;

• The thin-window gas-flow proportional counter tube is used as a detector, and the counter coincidence between the shielded counter tube and the measurement counter tube is used to reduce the interference of radioactivity in the surrounding environment on the measurement;

• The detection efficiency of 14C low-energy β-rays is ≥40%; it is better than similar detectors with semiconductors and scintillators as probes.

• The mass thickness of the gas flow proportional counter tube window is ~2μg/cm-2, the area of the measurement window is Ø60mm, and the sample area is Ø55mm.

• With PC application software, parameters such as high voltage and threshold can be set on the PC side. Simple operation interface, each channel can work and calculate independently; can directly obtain the radioactive specific activity Bq/L or Bq/Kg of the measured sample.

Technical parameters

ItemSpecification
DetectorThin window flow gas proportional counter tube (effective area 28cm2)
Background countα≤0.0017cm-2·min-1 β≤0.0354cm-2·min-1
Detection efficiencyα source: 241Am≥78%; β source: 90Sr-90Y≥65% 14C≥40%
Repeatability210Po α ≤ 1.5%; 90Sr-90Y ≤ 2.0%;
Cross channel ratioα to β channel ≤ 1% (210Po source); β to α channel ≤ 0.1% (90Sr-90Y source)
Power supplyAC 220V 50Hz
Power consumption≤250 VA
Ambient temperature0-45°C
Relative humidity≤90%
Get in Touch With Us

Experienced service team and strong production support team provide client worry-free order service.

    Need help? Contact us.

    If you are interested in any of our products or would like to discuss a customized order, Please feel free to contact us.

    Contact Us