Hydrostatic Level Measurement

Hydrostatic Level Measurement

Hydrostatic level measurement provides continuous level measurement in liquid applications using pressure sensors. It is a widely adopted approach for tanks, wells, and other liquid-containing systems where hydrostatic head is a stable proxy for level.

The method measures pressure created by the liquid column and converts it into level based on density. Implementations include externally mounted pressure transmitters as well as submersible probes for sumps and wells. Sensor construction options address moisture, condensation, and chemical exposure challenges encountered in real installations.

Modern hydrostatic designs use specialized measuring cells suited to harsh environments, including constructions designed to be insensitive to condensation and aggressive gases, and ceramic cell designs where process pressure acts directly on a robust ceramic diaphragm with a pressure-dependent capacitance change. These configurations support strong long-term stability in wet or chemically demanding services.

Typical applications include water and wastewater infrastructure, food and beverage utilities, chemical processes, and environmental measurement points where mounting flexibility (in-vessel, external, or submerged) simplifies installation. Hydrostatic is also attractive where vapor space conditions would challenge ultrasonic or some radar configurations.

Engineering work should address density variability (temperature, concentration changes, stratification), installation height references, and diaphragm material compatibility with the process. Where vacuum conditions, condensation, or aggressive chemistry exist, cell selection and protective features (including membrane monitoring) directly affect functional reliability and lifecycle cost.

Engineered Equipment Company, a leading supplier of specialized industrial equipment.