American Sensor Technologies, Inc. (AST) has released the AST4530 PVDF / PTFE submersible pressure transducer, an alternative to ultrasonic and radar sensors. 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 optimized 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. Vapors 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.
Pricing for the AST4530 starts at $595 each with a 25 foot cable. Quantity discounts available for as few as ten transducers.