Bubbler level sensor PS-Light-2

for water4-20 mAcompact

Compact, robust measurement system for measurement of water level using the "bubble gauge" principle High accuracy (0.05% FS) and long-term stability through smart sensor drift compensation Measuring ranges: 0-10 m (standard), Option: 0-20 m, 0-40 m Low energy consumption through optimised pump control Wide range of output signals 0-1 V, 0-5 V, 0/4-20 mA, RS485 (SHWP), SDI-12 for uncomplicated connection to external data collectors or to process control systems (SPS) Easy installation in the existing water level stations, protective housing or control cabinets Optionally available with integrated data logger Optionally available with integrated data logger and modem for remote data-transmission (4G/LTE) Robust, reliable and accurate: Using a high-performance, durable and brushless small compressor, air is forced at adjustable measuring intervals into the water via a tube. The pressure generated in the transmission line corresponds exactly to the hydrostatic pressure over the outlet nozzle. This is measured using a ceramic pressure measuring cell in the PS Light-2. Prior to each measurement a sensor drift compensation occurs. PS-Light-2 is as precise after many years of operation as on day one. Maintenance-free: The measuring cell of the PS-Light-2 does not come directly into contact with the measured medium and therefore does not have to be cleaned regularly of deposits (e.g. lime). Safe: Since, as is generally known, air is not conductive, elaborate electronic overvoltage protection can be dispensed with.