Features
- Vented sensitive volume of 102 cm3 Suitable as radiation monitoring chamber
- Rigid construction for wall mounting
- Gamma energy range 80 keV to 1.3 MeV
The 0.1 liter chamber is used for environmental radiation monitoring. The rigid and compact construction makes the chamber suitable for stationary radiation monitoring as well as for mobile operation in vehicles. The chamber is designed to measure very high dose rates of up to 4000 Sv/h (90 % saturation) as they may occur after nuclear accidents. Since the sensitive volume is open to the surroundings, air density correction is required for precise measurement. The chamber is fully guarded up to the sensitive volume. The cylindrical chamber is made of aluminum with 4 mm wall thickness. The ion-collecting electrode is made of aluminum too. The external chamber diameter is 60 mm and the length is approx. 150 mm. For the transfer of the measuring signal and the polarizing voltage, the chamber is supplied with two coaxial Fischer connectors. Via an optional adapter cable of 1.5 m length, the chamber can be connected to a dosemeter with M connector, which has input circuits on ground potential.
Specifications
| Type of product | vented cylindrical ionization chamber |
|---|---|
| Application | radiation monitoring |
| Measuring quantity |
photon equivalent dose |
| Nominal sensitive volume | 102 cm3 |
| Design | not waterproof, vented |
| Reference point |
chamber center |
| Direction of incidence | radial |
| Nominal response |
3 µC/Sv |
| Chamber voltage | 500 V nominal |
| Energy response | ≤ ± 10 % (Ephoton ≥ 80 keV) |
| Directional response in air | ≤ ± 10 % for tilting perpendicular to the axis up to ± 20° |
| Leakage current | ≤ ± 50 fA |
Materials and measures
| Wall of sensitive volume | 4 mm Al, 2.85 g/cm3 |
|---|---|
| Total wall area density | 1.14 g/cm2 |
| Dimension of sensitive volume |
radius 22.5 mm
length 88 mm |
| Central electrode | Al, diameter 25 mm |
| Outer dimensions |
diameter 60 mm length 150 mm |
Ion collection efficiency at nominal voltage
| Ion collection time | 1.3 ms |
|---|---|
| Max. dose rate for ≥ 99 % saturation ≥ 90 % saturation |
355 Sv/h |
Useful Ranges
| Radiation quality | 80 keV … 1.3 MeV |
|---|---|
| Temperature |
(10 … 40) °C |
| Humidity | (10 … 80) %, max 20 g/m3 |
| Air pressure | (700 … 1060) hPa |
Options
T7262/U10-1.5 Connection cable with M connector, length 1.5 m
Parts
T32001 Radiation monitoring chamber 0.1 l, Fischer coax connectors
Image Gallery
Click on a thumbnail below to view full size.