Kurz Instruments 454FTB, 504FTB and 534FTB cryogenic versions are rated for use from -200°C to 125°C. These utilize a low temperature sensor and firmware to support cryogenic applications.

This product supports the boiling tempertures of Nitrogen, Methane and many of the larger hydrocarbon gases. Some supported fluids that boil off to cold gases are N₂, O₂, Ar, F, NH₃, CO, CO₂, HCL, CH₄, C₂H₆, C₃H₈, C₄H₁₀ and C₄H₁₂. Many common refrigerants are also supported.

Typical applications that benefit from this cryogenic version of the Kurz thermal gas flow meters are:

LNG Terminals

Gas processing separation plants

Liquid gas boil off operations   

Fast freezing of foods, drugs, vaccines  

Rocket fuel off gas (LOX, CH4)

Vaporizer outlet gas flow

The safety approval rating for this product is limited to -40 deg C, as such the suitability of this product is dependent on the application and process conditions.