Your cart is empty.




Agilent Technologies Portable PHD-4 Helium Leak Detector

<< Previous in Leak Detection Next in Leak Detection >>

Price: From $11,256.00 to $11,937.00

Choose Your Model

Model Options:


Individual Replacement Parts
Agilent Technologies Portable PHD-4 Helium Leak Detector

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).

  • The PHD-4 weights only 2.6 kg (5.7 lbs) including the battery
  • Wide range of uses: replaces or can be used with existing methods such as bubble test or pressure decay
  • State of the art microprocessor control allows great simplicity of operation
  • Fully automatic start up
  • Ready for test in less than 3 minutes
  • Excellent selectivity for helium allows you to read helium leaks and ignore all other gases
  • Helium sensitivity can be adjusted as required to minimize test costs and helium consumption
  • Can operate either on battery power or connected to an outlet

What's Included

PHD-4 Basic Package

  • PHD-4 Basic unit
  • Transformer/Battery Charger (110-240 v)
  • Carrying Strap
  • 15-pin l / 0 connector
  • CD Instruction Manual
PHD-4 Complete Package

Travel Case Includes
  • PHD-4 Basic unit
  • Spare Battery
  • Transformer/Battery Charger (110-240 v)
  • Carrying Strap
  • Probe Set
  • 15-pin l / 0 connector
  • CD Instruction Manual

PHD-4 Replacement Part Kit

  • Sampling Pump with Fittings
  • Probe with Sampling Line
  • Tip Probe Filter
  • Internal Filter (kit of 5 units)
**PHD-4 is not always in stock - lead time is typically 5 weeks ARO.

  • Tech Specs

    Lowest detectable helium concentration

    2 parts per million

    Smallest detectable leak

    5 × 10-6 atm-cc/sec
    5 × 10-6 mbar-l/sec
    5 × 10-7 Pa-m3/sec

    Response time

    <2 seconds

    Recovery time (from 50 to 0 ppm)

    <10 seconds

    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


    Weight, basic module with battery

    5.7 lbs (2.6 kg)

    Background suppression (zeroing)




    Click to view PHD-4 Leak Detector Brochure