Hydrostatic Level Transmitter

Hydrostatic Level Transmitter is a measuring instrument that measures liquid level through hydrostatic pressure principle by measuring the pressure developed due to the liquid column height.

It consists of a reliable submersible level transmitter design with a piezoresistive type of sensor element which makes it suitable for wastewater tanks, reservoirs, and industrial level measurements.

It has a vented cable design which makes it possible for the submersible level transmitter to compensate for changes in atmospheric pressure and make it suitable for use in water tanks, deep wells, and remote reservoirs.

• Measures liquid level using the hydrostatic pressure principle.
• Suitable for rough water, wastewater, sludge, and suspended solids.
• 4–20 mA output directly proportional to liquid level.
• Submerged ceramic sensor provides reliable long-term performance.
• Ideal for industrial and marine applications.
• Wide range of installation options.
• Low-cost and user-friendly design.
• Intrinsically safe construction for dependable operation.

• Measuring Range: 0 to 1 m up to 0 to 100 m
• Medium Temperature: -40°C to 80°C (Special Type: Up to 250°C)
• Ambient Temperature: -30°C to 80°C
• Mounting: Top Mounted (Submersible Probe)
• Application: Open Tanks, Wells, Groundwater, Reservoirs, Water & Wastewater Applications

Hydrostatic Pressure Sensing

The Hydrostatic Level Transmitter is mounted at the bottom of the tank, well, or reservoir in order to detect the pressure generated by the height of the liquid column above the transmitter.

Atmospheric Pressure Compensation

In order to keep a high degree of accuracy of measurements, the submersible level transmitter equipped with vented cable automatically compensates the pressure of the atmosphere. The air pressure is transmitted to the other side of the diaphragm through the vent tube within the cable.

Pressure Signal Generation

The pressure applied to the diaphragm leads to its deformation which is detected by means of the strain gauge sensing element which transforms the pressure change into the electrical signal.

Signal Processing and Output

The electronics unit processes and stabilizes the signal and then transmits the signal using the standard hydrostatic level transmitter 4-20 mA output.

Mounting Styles & Sensor Configurations

• Submersible Probe Layout: Fully sealed, direct immersion sensor element equipped with a heavy-duty submersible water level transmitter layout for deep wells and open water reservoir submersible depth sensor configurations.
• External Flanged / Tank Mounted Layout: Process-isolated structural design optimized for side-tank execution as a flanged hydrostatic level transmitter.
• Vented Atmospheric Balancing: Internal atmospheric pressure balancing via a specialized submersible level transmitter with vented cable to eliminate external weather barometric deviations.

Mechanical Construction & Materials

• Sensor Housing Metallurgy: Precision machined SS304, SS316, or premium SS316L stainless steel alloys.
• Diaphragm Sensor Element: High-purity Piezoresistive Silicon or robust Ceramic sensing diaphragm to process fluid pressure changes.
• Cable Sheathing Insulation: Weatherproof Polyurethane (PU), PVC, or chemical-resistant PTFE cable variants to ensure complete liquid barrier integrity.

Dimensional & Measuring Ranges

• Immersion Measurement Range Spans: Calibrated standard ranges scaling from 0–1 Meter up to 0–200 Meters water column (mH2O).
• Process Interfacing Thread Sizes: Male or Female threaded connections available in standard 1/2″ BSP, 1/2″ NPT, or customized threaded hydrostatic liquid level gauge specifications.
• Process Flange Ratings: Fabricated mating flanges conforming to ANSI, ASA, or DIN pressure classes.

Electrical Ratings & Signal Outputs

• Primary System Power Supply: 12 to 36 VDC loop-powered external input lines.
• Analog Transmission Circuit: Equipped with an active hydrostatic level transmitter 4 20ma current loop module.
• Visual Display Interfacing: Optional field-mount indicator enclosure configured as a hydrostatic level sensor with digital display using an integral local LCD or LED panel.
• Intrinsic Safety Standards: Explosion protection architecture certified as an intrinsically safe submersible level transmitter for hazardous areas.

Application Calibration & Profiles

• Industrial Utility Profiles: Specialized structural settings built to operate as a hydrostatic level transmitter for diesel tank configurations or hydrocarbon containment vessels.
• Aggressive Waste Medium Profiles: Hardened anti-clog sensing configurations optimized as a hydrostatic level sensor for sewage treatment plants and hydrostatic level transmitter for wastewater tanks.

Accuracy of Level Reading with Pressure Compensation: The submersible level transmitter with a vented cable can compensate for variations in atmospheric pressure, thereby helping ensure accurate measurement of the level of the liquid.

Reliability in Tough Wastewater Application: Our hydrostatic level transmitter is suited for wastewater tanks because its flush diaphragm can help prevent build-up of suspended solids.

Reliable in Harsh Liquid Environments: Our hydrostatic level transmitter made up of tough material is well suited for diesel tanks among other applications of liquids.

Integration into Process Automation Systems: Through the 4-20 mA signal produced by our standard hydrostatic level transmitter, level information is transmitted to process automation systems such as PLC and DCS.