The most popular device is the S12S submersible level transmitter with SDi-12 output, this can be supplied with various measurement ranges and cable lengths to suit the installation. There is also the S12C which is a ceramic based sensor with a Marine Bronze housing which is suitable for permanent submersion in estuary and seawater installations.
ComBox is a simple interface to connect your SDI-12 device to a USB port. It has an internal 9V PP3 battery which powers the device and therefore there is no need for external power supplies. The ComBox has push button connectors on the top for the easy connection of a sensor. The provided SDI-12 configuration software has many features which include data-logging, auto zero (tare), level offset, density correction etc…
GenBox is a SDI-12 Signal Generator. This can connect to your interface or outstation and generate a SDI-12 output for level and temperature which can be adjusted via the multi-turn pot on the unit. This is typically ranged from 0mWG through to 50mWG and by rotating the pot you can generate the required mWG reading. Useful when setting up your alarm levels without having to generate pressure or physically moving a device in the installation.
VentBox – Vented Junction boxes with either the KL2 which has 2 x cable glands or a version called the KL3 which has 3 x cable glands which is useful for differential level measurement across sluice gates, weirs & traps etc…