Environmental Monitoring Sensors
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.



