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:
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.