The PHD-4 sniffer leak detector is able to detect very small leaks in objects that have a slight helium/air pressure inside.
The lightweight and rugged sniffer is sensitive to helium concentrations as small as 2 ppm- equivalent to a leak rate of 5x 10-6 atm-cc/sec, far superior to the performance by other means of detecting leaks, such as bubble-testing. The PHD-4 sensitivity relies on Agilent’s proprietary and patented SIPD (Selective Ion Pump Detection) technology. Since it is controlled by a microprocessor, the PHD-4 is easy to use with no training required. All tuning and zeroing are handled automatically. The display can be set to use any of four languages (English, French, German, and Italian).
|Smallest detectable leak||2 parts per million|
|Lowest detectable helium concentration||5 × 10-6 atm-cc/sec
5 × 10-6 mbar-l/sec
5 × 10-7 Pa-m3/sec
|Recovery time (from 50 to 0 ppm)|
|Start-up time, including self-check||3 minutes (approximate)|
|Power requirements||12 VDC from battery pack, car battery, or transformer|
|Transformer power supply||110-240V 50-60 Hz|
|Sealed, detachable battery pack||4 hours of operation with full charge|
|Ambient storage temperature||-20 to +60 °C (4 to 140 °F)|
|Ambient operating temperature||-5 to +35 °C (20 to 95° F)|
|Maximum relative humidity||90%|
|Weight, basic module with battery||5.7 lbs (2.6 kg)|
|Background suppression (zeroing)||Automatic|
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