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

Water Level Measurement Products

Semrad Pty Ltd is the sole Australian distributor of WaterLOG® environmental products. The range of products is cost effective and technically advanced, designed for the measurement and control of liquid levels. It includes water sensors, data collection platforms, gas bubbler systems, rain gauges, SDI-12 interfaces, precision inclinometers, communication products and data loggers.

With a wide range of sensing technologies, logging solutions, data collection and transmission, the equipment provides complete application coverage. Their water level measurement solutions range from small farm devices (farm tanks and irrigation systems) to large government installations such as dam floodgates and outflow.

Sensors

The WaterLOG® H-331 is a dual interface digital shaft encoder that measures water level by monitoring the position of a float and pullet. It has a built-in LCD display with a ‘Push to Read’ button and high-speed encoder circuitry that prevents missing counts due to rapid movement from wave action or sudden movement in freeze/thaw conditions. It is battery powered with low current operation (less than 800 microamps on typical standby), has zero backlash and a sealed enclosure to protect the electronics. It can operate in a temperature range of -40 to +60° C and its dual bearing design comes with special low temperature lubricant. It has 200 counts per revolution for the DSI-12 output, multiple sensors on a three-wire cable and a threaded shaft compatible with mechanical shaft encoder wheels.

The WaterLOG® H-340 is a precision tipping bucket rain gauge, housed in durable extruded aluminium with a one-piece cast base. A magnetic reed bucket tip sensor provides standard switch closure output. It has precision bucket bearings, a removable stainless steel funnel screen, and side windows to allow inspection of the mechanism without removing the cover. It can be used to accurately measure rainfall, monitor storm water run off and in other meterological applications.

Industrial Sensors

Semrad Pty Ltd has produced hundreds of industrial process, municipal and OEM (Original Equipment Manufacturer) solutions, with expertise in level switches, sensors and transmitters for harsh acid, caustic and chemical environments. Their broad range of sensing technologies provide complete application coverage with unmatched user flexibility. Their precision instruments can be applied in most liquid and bulk solids process industries, such as semiconductor, chemical, water, wastewater, mining, metal finishing, beverage, electronic, material handling, agricultural, paper, textile, pharmaceutical, medical and environmental.

With unparalleled hands-on experience, Semrad’s engineers can assist you in the selection and process integration of our equipment. These include configurations ranging from general purpose, to hazardous, non-contact and invasive, with a variety of relay controller and installation accessories.

WaterLOG ® Sensors

The WaterLOG® H-350-LITE is a NIST (National Institute of Standards and Technology) traceable pressure reference with accuracy better than 0.02% FSO (Full Scale Output). This unit combines high accuracy and low cost, and the only choice  for replacing mercury manometers. It feaures a SDI-12 sensor, built in temperature compensation, an operating temperature range of -40 to +60° C and the ability to directly interface with Sutron 8004 DCP. The accuracy drift is less than ± 0.05% of FSO per year and its response time is a 16 second measurement sequence.

The WaterLOG® H-330 is a digital shaft encoder that measures water level by monitoring the angular position of a shaft. It is suitable for measuring water levels utilizing a float and pully system, and works with any SDI-12 data recorder. It is battery powered with minimal current drain and low system cost. With magnetic sensing the static sensitivity is minimised and it has multiple sensors on a simple three-wire cable. It also has a sealed precision dual bearing design with special low temperature lubricant, a threaded shaft compatible with older mechanical shaft encoder wheels, no backlash and a built in transient over voltage protection circuitry.