Submersible Pressure Transducer

American Sensor Technologies, Inc. (USA) has released the AST4530 PVDF / PTFE submersible pressure transducer. Intended for liquid level measurement of corrosive liquids in which stainless steel or titanium cannot survive, the AST4530 is designed to offer excellent long-term survivability and stability. All materials exposed to the sensor are optimised for compatibility, including the PVDF cable and seal.

The AST4530 submersible pressure transducer offers a variety of measurement ranges from 0-2.5 PSI up to 30 PSI. 

Through the latest sensing technologies, the changes in pressure are transmitted through a PTFE diaphragm and converted to an output signal using ASIC electronics. A 1-5V and 0.5-4.5V ratiometric are available for low current consumption applications, whereas a 4-20mA output signals is available long distance transmissions.

Submersible pressure transducers offer some flexibility in comparison to ultrasonic and radar level sensors. Vapours generated from the liquid will not affect the sensing element of a submersible pressure transducer, since it is designed for optimal compatibility. Foaming or reflections of the liquid will not generate false readings, because the sensor measures liquid pressure based on specific gravity. AST4530 submersible transducers are vented to atmosphere through the cable for optimal accuracy. The AST4530 features a standard 1" NPT male conduit connection, to be used in turbulent tank installations.

Industries with field trial installations include: Municipal water / waste water management sites; Salt water / brine tanks; Chemical containers / totes requiring inventory management; Petrochemical above ground storage tanks.