Portable Continuous Air ​​​​​​​Monitoring System
Model: NTCAM-P

·        Detection efficiency of alpha and beta particles: Alpha Efficiency:19%  , Beta Efficiency: 14%.
·        Measurable activity range for synthetic alpha and beta: >0.01 (Bq/m3).
·        Gamma measurable energy range: 0-10 (MeV).
·        Energy resolving power of gamma scintillator detector: for Cs-137(662KeV) Energy Resolution:8.65% ,             for Co-60(1173KeV) Energy Resolution:4.7%.
·        Range of measurable gamma activity: >0.01 (Bq/m3).
·        Material and thickness of scintillator detector protection: Lead with a thickness of 15 (mm).
·        Maximum pumped flow rate: 5.5(m3/h).
·        Operating temperature: -10 to 55 degrees Celsius.
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The portable continuous air monitoring system Model:NTCAM-P provides the possibility of continuous measurement and monitoring of air pollution with radioactive particles.In this system, rapid and delayed detection of radioactive particles including artificial radionuclides emitting alpha, beta and gamma is performed.Monitoring the volumetric activity of artificial radionuclides emitting alpha, beta and gamma in the air, as well as the volumetric activity of  radon and  thoron and the amount of gamma dose in the air along with the storage of information are other capabilities of this system.

Specifications and capabilities of the dosimeter:

·        Rapid detection and calculation of the concentration of alpha, beta, and gamma producing radionuclides.
·        Measuring the concentration of radon, thoron and gamma dose in the air.
·        Collecting, storing and displaying alpha, beta and gamma spectra in local software.
·        The possibility of online remote monitoring.
·        Has online remote monitoring software with the ability to report and draw graphs.
·        Defining two levels of access for system software users.
·        The possibility of setting measurement periods based on the total amount of pumped air.
·        The possibility of testing, calibration, setting measurement ranges and defining correction coefficients by localsoftware.
·        Semiconductor detector with effective area  900(mm2)  for alpha spectroscopy.
·        Semiconductor detector with an effective area 300(mm2)  for beta spectroscopy.
·        scintillator detector Nal(TI) with dimensions1* 2 (in2)  with shielded crystal for gamma spectroscopy.
·        Measurable alpha and beta energy range: Beta Energy: 80(Kev)-2.5(MeV), Alpha Energy: 3-9(MeV).
 
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This system has two surface barrier semiconductor detectors for measuring the concentration of alpha and beta radioactive elements online and offline, a shielded NaI(Tl) scintillator detector for measuring the concentration of gamma radioactive elements and, also a Geiger Muller Dosimeter to measure environmental gamma dose.
Ambient air is introduced through an air pump through a special filter that is automatically placed in front of the detectors, and its spectrum is collected and analyzed online.
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The system has local software for collecting, calibrating tests and performing calculations related to the output of the detectors and is responsible for displaying, storing and sending information.
Since more than 50% of human radiation on the planet earth is caused by the activity of natural radon in the air and its beta and alpha producer daughters (Po-212, Po-214, Po-218 ) and the presence of these isotopes increases the field count in the alpha and beta spectrum, the system with the measuring the concentration of radon and thoron corrects the count related to the radiation of isotopes originating from human nuclear activities( Am-241, U-238, Pu-239,…  ) and calculates their concentration in the ambient air. In order to ensure the accuracy of the data, statistical errors are calculated every minute and are announced to the user along with the detection limit (MDL). In addition, the warning and risk levels can be adjusted by the software.