The 6548 submersible level transmitter measures the height of liquid above the position in the tank, well or borehole, referenced to atmospheric pressure. The sensor has a slim body design, ideal for narrow space applications like boreholes. It has good chemical compatibility and lightning and surge protection.

The transmitter has a piezoresistive sensing element, encased in stainless steel 316 housing. A bullet nose design protects the diaphragm from damage. The 6548 incorporates lightning and surge protection that utilises dual arrestor technology, grounded to case, which eliminates both power supply surges and lightning ground strike transients. Lightning and surge protection is not guaranteed and is not covered by a warranty.

When used with a proper intrinsically safe Zener barrier the 6548 is UL approved intrinsically safe for use in hazardous locations. The level transmitter comes equipped with a strong tensile strength shielded and vented cable. The vent tube in the cable automatically compensates for changes in atmospheric pressure above the water level. The vent is protected with a maintenance-free filter that stops water droplets or vapour from entering the transducer.

The 6549 MODBUS water level sensor is a pressure sensor-based instrument for measuring water depth in many applications. It has a cable with a vent tube for atmospheric pressure compensation. The 6549 water level sensor provides accurate long term measurements of water depths of 0m to 10m with an accuracy of 0.1% full scale. The sensor communicates via Modbus RTU RS485 protocol. The 6549 water level sensor is fully sealed and temperature compensated. A hermetically sealed stainless steel 316 case with a protection type IP 68 allows the pressure sensor to be immersed down to a depth of 10m.

The inner vented connection cable makes pressure compensation of the measuring cell against the atmosphere possible, thus hydrostatic pressure measurement. The submersible pressure sensor meets the electromagnetic compatibility (EMC) requirements of EN 61326. The mechanical fastening of the pressure sensor does not require any additional strain relief, as the construction of the cable is suitable to take a maximum tensile force of 1000 N. The cable’s individual signal wires are epoxy sealed into the casing to protect against water ingress. The probe comes with the inbuilt surge/lightning protection, which makes this probe ideal for monitoring drainage, bore depth and river height. It can also measure water with dissolved solids and other liquids.