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The Nova 334 Portable He Analyzer has been designed for the detection of He primarily in air or nitrogen.

The thermal conductivity (T/C) cell provides a fast and accurate measurement of He. It has an expected life of over 10 years unless contaminated.

In operation, a built in sample pump draws in the gas sample through the probe, filters, flow meter, and on to the T/C cell. The detected He is displayed on a digital readout meter.

A rechargeable battery provides power for approximately 8 hours of operation and the analyzer can be used while it is being recharged. The recharger is included.
Unit of Measure



N/A Temperature compensated thermal conductivity (T/C) cell cannot be burned out due to loss of flow or changing gases

Ranges Available

N/A 0-100% He in air or in N2


N/A 0.1% of He

Accuracy & Repeatability

N/A ±2% of full scale


N/A ±1% of full scale per week


N/A 90% of final reading in 10 seconds

Ambient Temperature Range

N/A 12 to 50 ºC55 to 120 ºF


N/A ±2% of F.S. on He in Air

Size & Weight

N/A K style - approx. 35.5L x 15.2H x 26.6D cm @ 5.5 kg (14" x 6" x 10½" @ 8 lbs)


N/A 115 VAC / 60 Hz for recharging (220 VAC / 50 Hz available)

Output Options

N/A 4-20mA

Hazardous Area Rating Options

N/A General Purpose, Non-Hazardous


N/A For analysis of Helium (He) in a binary gas mixture in process gases such as He in air, He in Nitrogen (N2), He in Carbon Dioxide (CO2), He in Argon (Ar), He in Oxygen (O2), etc.



  • Rugged design that is easy to operate
  • Fast warm up and response
  • Long-life thermal conductivity cell that provides accurate and stable readings
  • Digital meter readout
  • Modular layout that is easy to maintain
  • Rechargeable battery operated
  • Built in sample pump
  • Lightweight, compact and easy to use
  • Suitcase cabinet (K), weatherproof when closed



  • Recorder output - 4-20mA
  • Sample pre-cooler for hot samples
  • Suitcase (K) style cabinet available



  • Ambient air for zero
  • 100% He calibration gas for span.

Unique Applications

N/A All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.

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