Absolute unvented reference hydrostatic level sensors provide reliable liquid level measurement in challenging environments where traditional vented sensors are impractical. These sensors, with their fixed pressure reference, are particularly well-suited for applications such as underwater vessels, sealed tanks, and remote monitoring situations where a vent tube cannot be easily accommodated.
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Find out more about Absolute Unvented Reference Hydrostatic Liquid Level Sensors to determine which product options and capabilities will best meet your application requirements.
Absolute unvented reference hydrostatic level sensors offer a specialized solution for liquid level measurement in situations where traditional vented sensors are not feasible. Unlike their vented counterparts, these sensors utilize a fixed pressure reference, making them ideal for applications where venting to the atmosphere is impractical or impossible.
Absolute unvented reference sensors operate on the principle of hydrostatic pressure. The sensor measures the pressure exerted by the liquid column above it, and this pressure is normally directly proportional to the liquid level for a vented reference sesnor. However, since these sensors lack an atmospheric pressure vent, the measured pressure is absolute, meaning it includes the ambient atmospheric pressure.
To ensure accurate level measurement, particularly in low-range depth applications, it’s essential to account for variations in barometric pressure. This can be achieved by incorporating a separate barometric pressure sensor into the system. The readings from the hydrostatic level sensor can then be adjusted based on the measured barometric pressure, providing a true and accurate representation of the liquid level.
Applications
- Underwater Vehicles and Submersibles: The sealed environment of underwater vessels makes it challenging to establish a vent tube to the surface for atmospheric pressure compensation. Absolute unvented reference sensors eliminate this need, providing accurate level measurements without the complexities of external venting.
- Sealed Tanks and Vessels: In industrial processes involving sealed tanks or vessels, maintaining the integrity of the contained environment is crucial. Unvented sensors allow for level measurement without compromising the seal, ensuring process safety and product quality.
- Remote Monitoring and Difficult-to-Access Locations: When sensors are deployed in remote or difficult-to-access locations, establishing a vent tube can be impractical or cost-prohibitive. Unvented sensors offer a self-contained solution, simplifying installation and maintenance in such scenarios.