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 STS Sensors.
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.
STS Sensors specializes in producing pressure transmitters with its core being piezoresistive technology. The ATM.1ST Pressure Transmitter provides a modular construction that offers manufacturing flexibility. All wet parts of this transmitter are made of 316L stainless steel which provides long lasting durability long-term. Alternative construction materials for this sensor include titanium and Hastelloy.
Submersible level transmitters from STS measure hydrostatic pressure through a piezoresistive sensing diaphragm. These transmitters 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.
An example of a submersible level transmitter is the VL2000 wastewater transmitter. With a polyurethane vented cable, this transmitter is built with durable and corrosion resistant material to prevent water ingress and construction damage. The VL2000 can be utilized in a variety of water and wastewater applications including ground water, oceanography, and sewage lift stations.
A depth transmitter measures the distance from the transmitter to the surface of a 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 transmitters 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 transmitter has an anti-shock nose cone designed to protect against water hammer.