This analyzer, also known as an indoor gas analyzer, can be used in conjunction with a calibrator to measure the gas emitted by radioactive elements such as uranium and thorium samples. It can also be used to determine the concentration of trace radon gas in water samples and tunnels. The scintillation chamber consists of two organic glass hemispheres coated with ZnS (Ag) scintillators. Three scintillation chambers can be installed simultaneously on the disk, one of which is located at the upper end of the photomultiplier tube and is the scintillation chamber being tested, while the other two are in a dark state, waiting for measurement. The position of the scintillation chamber on the disk can be changed with the help of a handle. This allows for continuous replacement of scintillation chamber samples without stopping the machine until the measurement is completed

Technical Specifications

1． When measuring radium, the scintillation chamber is filled with gas for one hour, and the measurement time is100sThe coefficient of radium in the scintillation chamber is approximately1.4×10-13gRa/Pulse.

2． When measuring thorium, the depressurization method (continuous pumping) is used, and the measurement time is300s, in order to1gDissolved mineral samples can accurately determine over 0.03%

The thorium content.

3． The inherent background of the scintillation chamber (scintillation chamber without gas emission measurement) is not greater than100counts-1.

4． The scintillation chamber is sealed, and when there is residual air pressure inside the scintillation chamber1.33 × 104 PA (100 mmHg)At that time, in10Leakage within minutes shall not exceed1.33 × 103 PA (10 mmHg).

5． In a good working environment, the error of repeated sample measurements should not exceed±10%.

6． At the extreme temperature, the additional measurement error shall not exceed±15%.

7． At temperature35±2℃Relative humidity95±3%Under the given conditions, the additional measurement error shall not exceed±10%.

8． Preheat for half an hour and work continuously8hThe additional measurement error shall not exceed±10%.

9． Resistant to general transportation vibrations and impacts.

Usage environment

Good working environment:temperature20±5℃Relative humidity65±5%

Extreme working environment:temperature0～45℃Relative humidity95%

power supply:The power supply is provided externally, and the amplifier power supply is+9V～10VDC voltage, photomultiplier tube power supply is0～1500VAdjustable negative DC high voltage

Instrument weight:heavy16kg(The calibrator will be ordered separately)