Key Differences: Pressure, Level, and Depth Transmitters
Transmitters are valuable in providing insightful details to application details. For example, depth and level transmitters may be used for water-related applications to collect details on fluid levels. Pressure transmitters on the other hand are just as important in gaining specific details on the pressure levels of various applications.
In this article, we discuss the key differences between pressure, level, and depth transmitters from PMC-STS, Inc.
What is a Pressure Transmitter?
A pressure transmitter is a device that measures the pressure of a fluid or gas. A transmitter translates the low-level output of a sensor or transducer to a higher-level signal which is suitable for transmission to a site where it can be processed further. In general, a transmitter is similar to a transducer but provides a 4-20 mA current loop suitable for operation over longer distances.
PMC-STS specializes in producing pressure sensors with its core being piezoresistive technology. The ATM.1ST Pressure Transmitter provides a modular construction that offers manufacturing flexibility. All wet parts of this sensor are made of 316L stainless steel which provides long lasting durability long-term. Alternative construction materials for this sensor include titanium and Hastelloy.
Transmitters for Water – Submersibles
PMC-STS’ Versaline submersible sensors measure hydrostatic pressure through a piezoresistive sensing diaphragm. Submersible sensors utilize a transducer to convert hydrostatic pressure into a signal of electricity. When the sensor senses a change in pressure, its electrical resistance changes as well. The electrical signals are converted to signal outputs of 4-20mA.
Submersibles from PMC-STS can be utilized for depth and level measurement. The transmitters are molded with a standard polyurethane vented cable and often these transmitters are made with durable and corrosion resistant material such as titanium.
What is a Level Transmitter?
A level transmitter measures the distance from the ground to the surface of the well. A submersible measures level by receiving a measurement of hydrostatic pressure of a liquid.
An example of a durable level transmitter is the VL2000 Submersible Level Transmitter from PMC-STS. A level transmitter can be placed in applications such as tanks, along with pumps and lift stations for wastewater applications.
The VL2000 sensor avoids clogging and sludge build up encountered in wastewater through its rugged flush open face design. The sensor consists of a ceramic sensing element and can be made of either stainless steel constructions that can be used for most applications or titanium that can be utilized for chemical environments. Along with this, a polyurethane vented cable is molded so the transmitter is resistant to water.
What is a Depth Transmitter?
A depth transmitter measures the distance from the transmitter to the surface of the well.
The VL3000 Depth and Level Transmitter is an example of a depth transmitter specialized for ground, surface, waste, and sea water applications. Most often, depth sensors are utilized in open environments such as rivers, lakes, and wells. Just like the VL2000 Submersible Level Transmitter, the VL3000 can also be made of stainless steel and titanium as well. Instead of a flush-mounted foundation, this sensor has an anti-shock nose cone designed to protect against water hammer.
PMC-STS, Inc.
PMC-STS, Inc. is a recognized leader of innovative measurement solutions for pressure, level, vacuum, and temperature applications. PMC-STS is proud of its USA made products, manufactured to meet the needs of diverse industries such as water and wastewater, aerospace, automotive, oil and gas, and the papermaking industry.
Interested in speaking with a sensor expert about pressure transmitters for your application needs? Contact us today.