Emerson Process Management has introduced a cryogenic seal for its Rosemount 5300 Series of high performance guided wave radar (GWR) level transmitters.

The seal has been developed as a direct result of customer demand from within the chemical, oil and gas, and petrochemical sectors.

It enables accurate, reliable level measurement of condensed and liquefied gasses at very low temperatures (to -196°C) and is ideal for use in process tanks, side chambers, storage tanks and transportation vessels.

The development of the seal offers benefits to all process industries where liquefaction of gasses occurs.

These gases include natural gas, ethane, propane, butane, LPG, NGL, ethylene, nitrogen, inert gases and carbon dioxide.

The hermetic, gas-tight and robust construction also offers a safe and reliable seal solution for measuring liquefied anhydrous ammonia.

The new transmitter seal provides multiple layers of protection using a temperature and pressure barrier in a flexible assembly to handle forces induced by probe movement and temperature variations.

A second brazed hermetic, gas-tight seal provides additional protection, and the entire assembly is welded into a stainless steel sleeve for total robustness.

The two-wire technology of the Rosemount 5300 enables fast and inexpensive installation.

FOUNDATION fieldbus, HART and PlantWeb functionality means the transmitter integrates easily into new or existing control systems, and according to Emerson, this, in addition to maintenance-free operation, results in a quicker return on investment with overall improved uptime and enhanced safety.