รายละเอียด
Almost Not There
T20 is a solid state detector dedicated for measurements on Rad/Fluoro systems when it is crucial that the detector itself does not have any effect on the system output or disturbs the X-ray beam.
It was developed mainly for measurements of the patient entrance dose (skin dose) and maximum dose rate in the radiographic and fluoroscopic field. Despite its small size, the T20 is completely protected from picking up backscatter.
Anywhere in the X-ray Field
T20 can be placed anywhere in the X-ray field apart from many other detectors. For instance – the RTI Dose Probe – is small but not small enough in all situations. It still has to be placed outside the active area to avoid affecting the feedback of the system.
Independent and Sensitive
T20 can connect to either Piranha, Cobia Flex, Cobia Sense or Barracuda (two different models of T20) and has a built-in correction filter which allows the detector to self-compensate for different beam energies. Therefore it has a flat energy response in the radiographic range with no need for correction factors. T20 gives five times higher sensitivity than ion chembers.
It fulfills the IEC directive for dose detectors regarding energy independency, measuring range and angular dependency for RQR50–150 kV.
Specifications with Black Piranha
| Ranges | 0.7 nGy – 10 kGy |
| 0.08 µR – 1 MR | |
| 27 nGY/S – 500 mGy/s | |
| 3µR/s – 57 R/s | |
| Inaccuracy | ±5 % (RQR 50 – 150 kV) |
| Supporting Barracuda | All electrometer models |
| Energy Dependence | Less than 5 % RQR 50–150 kv |
| Connector | T20 can connect to either Barracuda or Piranha (Note! two different models) |
| Size of detector house | 24×5 square millimeter |
| Length | 318 mm (rod 280 mm + detector 26 mm + back mount 12 mm) |
| Trig models | After Exposure, Continuous, Timed and Free Run |
Specifications with Cobia Flex / Sense
| Dose | 35 nGy – 15 kGy |
| 4 µR – 1700 kR | |
| Dose Rate | 1.5 µGy/s – 1500 mGy/s |
| 10 mR/min – 10 kR/min | |
| Dose per pulse | 5 nGy/pulse – 11 Gy/pulse |
| 0.6 µR/pulse – 1.3 kR/pulse | |
| Inaccuracy | ±5 % |
| Size of detector house | 24×5 square millimeter |
| Length | 318 mm (rod 280 mm + detector 26 mm + back mount 12 mm) |
| Trig models | After Exposure, Continuous, Timed and Free Run |
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