- High sensitivity
- Very handy
- Ergonomically friendly
The helium leak detector PHD-4 operates as Selective Ion Pump Detector (SIPD).
Helium penetrates through a special membrane heated to a specific temperature that allows helium atoms to pass. These are ionised by an ion converter. The detector registers the ion current thus produced and emits a signal whose height is proportional to the He amount detected. The signal amplitude indicates the leak size.
|Minimum detectable helium concentration
Minimum detectable leakage rate
Warming period incl. self-test
Continuous operation period
5 x 10-7 Pa m3/s
18 V (Akku)
170 x 136 x 290 mm