THERMO high sensitivity x, gamma dose rate meter FH40G-NBR

THERMO high sensitivity x, gamma dose rate meter FH40G-NBR

THERMO high sensitivity x, gamma dose rate meter FH40G-NBRProduct Introduction:

Used for measuring environmental level x and gamma dose rates, while also being able to detect hidden radiation sources and confirm artificial radiation sources

It is difficult to distinguish the fluctuations between artificial gamma sources and natural background using known quantitative measurement methods

Although inorganic scintillators and high-resolution germanium semiconductors can be used to measure spectra for highly shielded artificial sources, the required time is relatively long

Moreover, measuring the peak of the light spot within 100mS to a few seconds has poor statistical accuracy. In addition, the shielding effect of the tested substance on the natural gamma background causes a 50% decrease in the natural background, making it difficult to detect weak sources

Even if using the method of measuring both the effect and the background at another location, and then subtracting, it still requires a long time to measure weak sources

The measuring device using NBR technology is connected to the scintillator with at least two comparators, one comparator corresponding to the high threshold and one comparator corresponding to the low threshold, to measure the integral count rate above the threshold

If the measured ratio of the two threshold counting rates is consistent with the ratio of natural gamma radiation or within the error range, * no gamma source signal is given. If the difference is greater than 20%, * artificial gamma source signal is given

FH 40 G NBR Patrol Instrument

Portable environmental grade gamma and X-ray dose rate meter (Thermo FH40G-NBR)

Efficient and rapid positioning of contaminated or hidden radiation sources, and accurate determination of dose rates, can be used by emergency response personnel and radiation environment safety personnel to deal with radiation crises.

1) Dose rate range: 1nSv/h-100 μ Sv/h

2) Gamma energy range: 48 keV – 6 MeV

3) Sensitivity FHZ 672 E-10: Approximately 2500 cps/μ Sv/h (Cs-137)

4) Detection limit: less than 20% of the typical value of natural dose rate

Product Features:

For cases of artificial gamma radiation and abnormal energy in the gamma radiation field, the red/green flicker of the NBR probe provides extremely rapid indication

Adopting advanced ADF technology (Advanced Digital Filter), it can quickly respond to slight increases in radiation levels

Detection efficiency of up to 2000S-1/μ Sv/h (137Cs)

NBR technology can detect concealed radiation sources and confirm artificial radiation sources

Intelligent host, multiple detectors to choose from

PTB certification: Z23.01/96.06

FB certification: DL/FW/IdF029820, can be used for fire brigade

Product application:

FH40GL-10 system host

FH672E-10 High Sensitivity x and γ Dose Rate Detector

FH40 Cal Scale Software

Program operation software

IR infrared reader

connecting cable

Radiation detectors using natural background subtraction (NBR) technology can automatically distinguish between natural background radiation, NORM radiation, and artificial radiation.

Detect even the slightest amount of radiation within seconds and immediately determine whether it is natural or artificial. The Thermo Scientific FH 40 G NBR measuring instrument uses advanced natural background subtraction (NBR) technology to distinguish between natural radioactive material (Norm) and artificial radiation sources. This highly efficient detector can quickly locate contaminated or hidden radiation sources and accurately determine dose rates, which can be used by emergency responders and environmental remediation personnel dealing with radiation crises.

The FH 40 G NBR measuring instrument combines the Thermo Scientific FH 40 G multifunctional measuring instrument with the Thermo Scientific FHZ 672 E series detector, which is equipped with a highly sensitive scintillation detector and ultra fast response device. The FHZ 672E probe adopts NBR technology, which can distinguish between natural radioactive materials (Norms) and artificial radioactive sources, and is clearly and easily represented by red or green LED lights. Ordering this combination can be used to measure dose rates in R/h units (FHZ 672 E version) or to achieve the energy characteristics required for environmental dose equivalent H * (10) in Sv/h units (FHZ 672 E-10 version). This detector has high efficiency and allows for precise measurement of dose rates at two locations within seconds.

Strong on-site detection of DU (depleted uranium) materials.

Tested and certified by TUV.

The sensitivity of the detector is 1000 times higher than that of a detector filled with normal gas.

Simultaneous measurement with FH 40 G can expand the measurement range of a single FHZ 672E probe (up to 100 R/h/1 Sv/h).

Even within the fluctuation background radiation range of up to 10 R/h/100 nSv/h, artificial radiation of 1 R/h/10 nSv/h can be detected within seconds

Can quickly and reliably locate contaminated materials or hidden radioactive sources.

Flexible data storage

The stored measurement values can be accessed at any time and viewed on the display screen of the advanced inspection instrument. To further process and archive, the historical record content can be transferred to a PC through the FH 40 GL-10 interface.

Intelligent Counting Rate Calculation Method (ADF Mode)

Ensure that even the smallest dose rate changes can be detected immediately, while effectively suppressing statistical fluctuations.

Configure through PC

The required features can be activated using a Windows based operating system or hidden to prevent user access. This means that the characteristics of FH 40 GL-10 will correspond precisely to the measurement task, thereby minimizing operator errors to the greatest extent possible. It can be simplified or complicated according to the user's application.

Suggested target audience:

first aid personnel

civil defense

fire brigade

law enforcement agencies

Special Forces

Environmental Monitoring Department

Rectification department

A complete FH40G NBR measuring instrument system includes an FH40G series measuring instrument, an FH40G type connecting wire, and an FHZ 672 E series probe.

FHZ 672 E series probe

Recognition of gamma radiation detection limit:<20% of natural dose rate, normal

Working temperature (metric): -30 ° to+50 ° F

Storage temperature (metric): -40 ° to+70 ° F

Working temperature (imperial): -22 ° to+122 ° F

Storage temperature (imperial): -40 ° C to+158 ° C

Length (metric): 405 mm

Width (metric): 110 mm

Height (metric): 240 mm

Length (Imperial): 16 inches

Width (Imperial): 4.3 inches

Height (Imperial): 9.5 mm

Weight (metric): 3.9 kg (excluding FH40G equipment and connecting wires)

Weight (Imperial): 8.6 kg (excluding FH40G equipment and connecting wires)

IP protection level: IP 52

Running time when connecting FH40G devices: approximately 30 hours

FHZ 672 E probe

Dose rate calibration unit: R/h

Measurement range: 0.1 μ R/h to 10 mR/h

Threshold under gamma energy: 50 keV

Sensitivity FHZ 672 E-10: Approximately 28 cps/μ R/h (Cs-137)

FHZ 672 E-10 probe

Dose rate calibration unit: Sv/h

Measurement range: 1 nv to 100 μ Sv/h

Threshold under gamma energy: 48 keV

Sensitivity FHZ 672 E-10: Approximately 2500 cps/μ Sv/h (Cs-137)

THERMO high sensitivity x, gamma dose rate meter FH40G-NBR