Switches Indicators & Gauges

Submersible Pressure Transducer are typically created with a round, tubular stainless steel body with a pipe fitting on one end and a cable coming out of the other end. They detect pressure underwater and then convert it into energy which is outputted as a voltage.

The WaterLOG® Model H-310 is a submersible pressure transducer that is used for water level monitoring. It is extremely accurate in its measurements and its accuracy exceeds of ±0.01 feet (the US government requirements).

The WaterLOG® Model H-310 has many features that make it one of the best in its field. Some of these include:

• It is very simple to install, use, and maintain and there is no need for on-site calibration when installing the WaterLOG® Model H-310
• The WaterLOG® Model H-310 performs exceptionally precise measurements for excellent accuracy of results.
• The enclosure which surrounds the WaterLOG® Model H-310 is made from high quality stainless steel which is nonconductive as well as being noncorrosive.
• There is no room for error during transmission due to the fact that the pressure measurement data is transmitted digitally over long cable lengths.
• The WaterLOG® Model H-310 contains a unique dry air moisture barrier system. This provides atmospheric compensation without impairing the sensor’s accuracy.

For more information see the Samrad Website

Hydrostatic level transmitters are designed for depth/level measurements in deep wells, groundwater, rivers, water towers, sewage treatment plants and other similar applications. They are a form of two-wire level transmitter that consists of a probe (made from stainless steel) and a special breathing cable (containing a capillary pipe) and a stress resistant inlet.

Hydrostatic level transmitters can be used in both indoor and outdoor applications, however, if it is being used in an outdoor application it is recommended that application of an over voltage protector be used.

Hydrostatic level transmitters can be used in clean liquids in bore holes and are especially recommended for monitoring and controlling submersible pumps.

How they work

As the hydraulic pressure increases with the height of the water column a displaced electrical charge accumulates on the opposing surface of the cell. This generates an output signal, which is converted to a signal that is directly proportional to the pressure applied. The level metering is based on a measurement of the pressure difference between the hydrostatic pressure of the liquid head above the probe and the actual atmospheric pressure.

Semrad

Semrad Pty Ltd is a leading Australian distributor of level switches and transmitters, designed specifically for harsh industrial applications, including caustic and chemical solutions. They produce NivoPress NP Hydrostatic level transmitters for commercial and industrial use.

For more information click here to view the Semrad Pty Ltd website.

Guided Microwave level transmitters are designed for continuous level measurement.

They have a very versatile range of applications and are suitable for use in both liquid (including corrosive liquids) and solid products. Even conditions such as steam generation, density fluctuations and changes of the dielectric constant do not influence the accuracy of the measurement. This is because the microwave principle that the transmitter is based on works independently to the products characteristics (e.g. moisture, intense dust/noise generation density, temperature, overpressure, foal, dielectric value and the shape of the material cone).

The simple installation and the 2 wire electrical connection make guided microwave level transmitters one of the most popular level instruments on the market.

Guided Microwave level transmitters are used in the following industries (although not limited to only these industries): chemical, pharmaceutical, oil and gas, food, dairy, beverage, paper, automotive, aggregates, steel, water and waste water and marine.

How it works

Guided Microwave level transmitter operate based on the TDR (Time Domain Reflectometry) principle. High frequency microwaves/micropulses are sent along a steel rod or cable at the speed of light. When these microwaves reach the product surface pulses are reflected and received by the base. The time it takes for the microwaves to fit the product surface is evaluated by the base and converted to a distance.

Where do I get one?

Semrad Pty Ltd is a leading Australian distributor of level switches and transmitters, designed specifically for harsh industrial applications, including caustic and chemical solutions. They produce and distribute a range of guided microwave level transmitters. For more information or to place an order click here to view their website.