Hydrostatic pressure sensing devices for measuring liquid level and converting it to an electrical signal to send to other instrumentation.
Hydrostatic level sensors for measuring the pressure generated by a static head of liquid. Use hydrostatic level sensors to measure fluid level in storage tanks, processing vessels, header tanks, pump inlet head and other applications where hydrostatic pressure is used to determine liquid height.
Underground rain water storage tank level sensor and readout for 2 metre depth - Water level indicator for a 2 metre deep rain water storage tank located underground.
CIP protected dairy sensor for measuring level of milk in 6m high tank - Hygienic pressure sensor designed for CIP cleaning in dairy applications. Withstands harsh chemicals and high temperatures. Accurate and reliable level measurement in milk silos.
LMK387 Cleanable Sewage and Sludge Pressure/Level Sensor
LMP307 Submersible Level Transmitter
LMK382 Low Range IP68 Waste Water Level Transmitter
LMK458 Marine Approved Hydrostatic Level Transmitter
- 3m range 4-20mA output submersible hot water tank level sensor - This submersible level sensor is suitable for use in hot water tanks. It features a 4-20mA output, 0-3m measurement range, and high-temperature resistance up to 125°C (257°F).
- Dirty water, sludge & sewerage tank level 400 mbar pressure sensor - Flush ceramic diaphragm pressure sensor for measuring level of a dirty water, sludge & sewerage tank.
- Borewell water level sensor for 100m water height - Low cost solution to measuring the water level in a borewell with a water height of as much as 100 metres above the submerged sensor
- 200m deep well pump water level sensor, switch & display - Protect your deep well pump with thhis submersible level transmitter and wall mounted indicator and alarm. This system provides reliable water level monitoring and pump protection at depths of up to 200 meters.
- Hydrochloric acid storage tank 1mH2Og hydro-static pressure transmitter - A hydro-static pressure transmitter for storage tank level monitoring use to measure level of 36% hydrochloric acid over a range of 0 to 1 mH2O g by immersion in the tank, and sending the corresponding 4-20mA signal through the submersible electrical connection.
- 25m borehole submersible pump level indicator and control switch with level sensor - I am hoping to use a borehole where the pump is about 25m below the surface. I would like the pump to operate automatically by switching on when the water has returned to about 14m below ground level and off at about 20m below the ground.
DS200 Combined Hydrostatic Level Switch, Gauge and Sensor
18.605 G Low Cost Submersible Diesel Fuel and Water Tank Level Sensor
LMP305 Borehole Level Transmitter
DCL 531 Modbus RTU RS 485 Submersible Stainless Steel Liquid Level Sensor
- 5m deep sewage wastewater submersible level sensor - Submersible level sensor with a flush ceramic sensing diaphragm which is ideal for use on sewage wastewater
- Generator diesel tank height level sensor for 1 metre height - Prevent generator downtime and fuel theft with this easy-to-install diesel level sensor. 0.5 to 4.5Vdc output for seamless integration with MCUs.
- Fleet management system submersible 3000mm height petrol tank level ATEX rated pressure sensor - ATEX rated submersible pressure sensor for fleet management system (FMS) petrol applications, ideal for petrol applications in hazardous environments.
- Floating dry dock ballast tank 14ft range 4-20mA output submersible seawater level sensor - 14ft range submersible level sensor for monitoring the level of seawater in floating dry dock ballast tanks.
- BMS water tank 6mH2Og range 0-10V out submersible level sensor for commercial buildings - This submersible level sensor provides accurate and reliable water level measurement in BMS applications in commercial office buildings, with a 0 to 6 mH2O gauge pressure range and a 0 to 10V output signal.
- Cooling tower basin water level transmitter - Ensure efficient cooling tower operation with the LMK382 submersible level transmitter. Its low-range measurement capabilities and robust design make it ideal for monitoring basin water levels, preventing pump damage, and optimizing water usage.
DPT200 Pressurised Tank Level Differential Pressure Transmitter
DCL 551 RS485 Modbus RTU Submersible Low Range Fuel, Oil & Wastewater Level Probe
LMK807 Plastic Submersible Level Transmitter
ATM/N Titanium Submersible Hydrostatic Pressure Transmitter
- Dockside sea water tide level transmitter up to 6 metres depth
- Fresh water compatible submersible 1mH2O range 4-20mA output pressure sensor
- Water tank level gauge transmitter with adjustable range
- 120in range 0-5Vdc output submersible river depth sensor
- Greenhouse clean water tank 15 mWG 4-20mA submersible level sensor
- RS485 submersible wastewater level and temperature sensor for 3 metre depth
- 70m/230ft depth SDI-12 submersible freshwater level probe
- Utility manhole vault 4mH2Og range 0.5-4.5V out water level sensor
- Immersible water level sensor for 4 metre deep cold water storage tank
- Potable water underground 10ft dia storage tank temperature and level sensor
- Submersible 0.5 metre deep fresh water level sensor
- 2 mWC waste water submersible pressure transmitter with 1/2 BSP female fitting
Find out more about Hydrostatic Level Sensors to determine which product options and capabilities will best meet your application requirements.
Description
Hydrostatic level sensors are pressure sensing devices specifically designed for use on liquid level measurement applications.
All liquids which are under the influence of gravity generate a hydrostatic pressure. This pressure is similar to the weight of a solid object, but because of the fluid state it is possible to measure how the weight of the liquid varies with height.
The resulting pressure at different heights is directly proportional to the weight of a liquid between the surface and a specific height point. The weight of the liquid can be derived from the mass and force (gravity). The mass can be derived from the density and volume of the liquid. The volume of a liquid can be derived from the dimensions of the vessel containing the liquid. If the vessel has a fixed length and width, then the height is directly proportional to the volume, mass, weight and therefore the pressure.
A hydrostatic level sensor is an instrument for measuring the height of a liquid and converting it to an electrical signal. The hydrostatic level signal output can then be utilised by other instrumentation to display, monitor, log or control the liquid level.
There are many different types of technology used to measure liquid level, there are sensors that can be mounted above the liquid such as ultrasonic or radar which bounce a sound or electromagnetic wave off the surface of the liquid and use the travel time to determine the distance from the liquid surface.
For liquid filled tanks a pressure sensor can be installed in a hole at the bottom of the tank which measures the hydrostatic pressure generated by gravity acting on the liquid.
Another method is to lower a hydrostatic level sensing probe into the tank and immerse it in the liquid to measure the pressure generated by gravity acting on the surrounding liquid.
Advantages
- Easily fitted at ground level to any port or take off, which is also convenient for maintenance
- No protrusion inside vessel
- Not affected by any surface disturbances such as turbulence, foaming, vibration
- Small compact size possible
- Compatible for conductive or non-conductive fluids
- Flush diaphragm types prevent clogging and works with thick liquids and slurries containing solids
Disadvantages
- Pressurised or vacuum sealed vessels require a more complex installation
- SG or density change affects calibration
- Flush diaphragm types vulnerable to mechanical damage from debris, cleaning processes
- Requires regular calibration due to gradual error shifts
- Installed in a position below the lowest required liquid level
- Fittings must be leak tight
- Diaphragm movement vulnerable to clogging, wear and tear
- High cost