--- title: Submersible Pressure Transducers description: Pressure transducers measure pressure by detecting changes at the source, which cause the diaphragm (the sensing element) to bend. image: https://blog.techstar.com/hubfs/Submersible%20Pressure%20Transducers.png --- [![Teckstar](https://blog.techstar.com/hubfs/header-logo-1.png)](http://techstar.com/) [SPEAK TO AN EXPERT](https://techstar.com/asktechstar/?__hstc=233546881.94308a3d6ad9d040c1c30bf75699981b.1700673178130.1709582481954.1709637461889.239&__hssc=233546881.1.1709637461889&__hsfp=541284016) [ONLINE STORE](https://store.techstar.com/?__hstc=233546881.94308a3d6ad9d040c1c30bf75699981b.1700673178130.1709582481954.1709637461889.239&__hssc=233546881.1.1709637461889&__hsfp=541284016) - OUR COMPANY - [Sales Coverage](https://techstar.com/locations) - [Office Locations](https://techstar.com/locations#offices) - [Ask An Expert](https://techstar.com/asktechstar/) - [Who We Are](https://techstar.com/who-we-are) - [Industries](https://techstar.com/industries) - 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The alterations to the diaphragm are recorded as measurements that are translated into signals. The signals travel on the transduction element and synchronize to provide instructions for the control system. There are many types of pressure transducers that can be customized to fit a multitude of environments.  Submersible [pressure transducers](https://techstar.com/solutions/pressure-solutions/pressure-transducers/)accurately measure tank levels while fully submerged in a fluid. A sensor is attached to a cable, and the cable lowers the sensor to the bottom of a vessel of liquid. The transducers are securely fitted inside water-tight enclosures. The measurements provide data to calibrate the fluid levels according to the site specifications.  ## What is Hydrostatic Pressure?  Hydrostatic pressure, also known as head pressure, is the force exerted by the liquid in the tank. The density of the fluid and the height of the fluid determine the pressure. When the fluid density is a constant, measurable changes reflect variance in level. Pressure sensing can be affected by atmospheric conditions such as barometric pressure, and in these sorts of conditions, venting strategies are used to maintain measurement accuracy.  ## What is Osmotic Pressure? Osmotic pressure is the pulling force on fluid due to the presence of solutes in the liquid. The concentration of solutes present in each solution prevents the pure solvent from diffusing into it. Osmotic pressure is the pressure required on the solution to stop fluid movement when solutions and pure water are separated by a semipermeable membrane. Osmotic pressure is related to the concentration levels of particles. The freezing point depression, boiling point elevations, and vapor pressure depressions all relate to solutes in a solution and influence osmotic pressure. The higher the osmotic pressure, the higher the tendency of the solution to attract water through osmosis.   ## How do Submersible Pressure Transducers work? In [submersible pressure transducers](https://techstar.com/solutions/pressure-solutions/submersible-pressure-transducers/), the diaphragm responds to variance in hydrostatic and osmotic pressure. Each application for submersible pressure transducers necessitates a specific balance between hydrostatic and osmotic pressure to maintain fluid equilibrium, functionality, and safety. When the inward flow of water needs to be maintained, it is critical that the appropriate amount of osmotic pressure is applied. When water flow needs to be stopped, the flow pressure must be aligned with the osmotic pressure. This balance is referred to as hydrostatic pressure.  ## The Importance of Submersible Pressure Transducers Submersible pressure transducers can measure the level of any liquid, and they are common in the water or wastewater treatment industries. They can continuously measure levels, and they are extremely accurate. Additionally, they are distinguished from mounted fluid switches because they can function in any size vessel. The low power requirements make these devices versatile and ideal for remote tank level monitoring. Submersible pressure transducers are designed for clean or dirty liquids. Submersible pressure transducers are important to wastewater lift stations because they control the pumps and prevent Sanitary Sewer Overflows (SSOs). SSOs are expensive and hazardous, and durable technology is required to operate reliably. Submersible pressure transducers are also important to landfills to drain and process leachate. Leachate is the moisture formed by decomposing substances, and it must be diverted from contaminating the soil and water supplies that lie below the landfills.  The PT-500 submersible pressure transducer is designed for water and other hydrocarbon-based liquids that have consistent density. It is safe for Class 1, Div 1/Zone 0 locations. This classification means it is safe in the most explosive environments. With this model, a surge protector is not needed to protect the exposed electrical infrastructure. It has built-in lighting transient protection. When the device drifts, the zero point can be adjusted in the field using a simple magnet. The provided sensor cage that protects the diaphragm is reusable. It is ideal for remote monitoring situations due to the low power consumption engineered through Modbus and voltage output solutions. Modbus provides connection to the remote monitoring software, Tank Cloud, that is operational on both computers and smartphones. The Modbus system also offers a flexible display with versatile wiring that can function in master, slave, or snooper modes. PT-500 submersible pressure transducers are commonly found in lift stations, retainer ponds, wells, process tanks, oil storage, chemical tanks, and water storage. The stainless-steel instrument can resist corrosion by caustic chemicals and natural elements. With high-strength cables, superior laser welds, surge protection, automatic temperature compensation, field adjustment capabilities, robust NPT fitting, and durable transducer face, the PT-500 submersible pressure transducer is an exceptional instrument.  For every situation that necessitates a submersible pressure transducer, only the highest quality devices should be used. For over 20 years, TechStar has been the most reliable supplier of reliable instruments, training, and support. 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