Pressure sensors for installing underwater which are constructed to prevent water entering sensitive components and causing damage to the sensor. Underwater pressure sensors are IP68 rated for permanent use underwater to a specified maximum water depth.
18.605 G Low Cost Submersible Diesel Fuel and Water Tank Level Sensor - Low cost OEM diesel fuel or water level sensor for installing inside or outside a storage tank. 
MTM3000 10mm diameter submersible miniature pressure transducer - MTM3000 Miniature Level Sensor specially designed for inserting down very small boreholes in wells, dams and many geophysical research applications.
DCL 531 Modbus RTU RS 485 Submersible Stainless Steel Liquid Level Sensor - Digital submersible stainless steel liquid level sensor with a Modbus RTU protocol RS 485 serial bus interface.
DCL 571 RS485 Modbus RTU Submersible 22mm dia Groundwater & Wastewater Level Probe - 22mm diameter digital interface submersible liquid level probe with RS 485 Modbus RTU protocol serial bus communications for installing in 1" diameter tubes to measure groundwater level and measuring wastewater with nose cone removed.
DCL 551 RS485 Modbus RTU Submersible Low Range Fuel, Oil & Wastewater Level Probe - Low range digital interface submersible liquid level probe with RS 485 Modbus RTU protocol serial bus communications for measuring level of fuel, oil and wastewater in low fill height open tanks.
IMSTL IP68 Water Temperature and Depth Transmitter - Stainless steel 316L waterproof probe for measuring both water temperature and depth and generating two separate 4-20mA current loop measurement signals.- IWSL Potable Water Submersible Level Sensor - IP68 protect pressure sensor for monitoring potable water level to depths of 100 metres.
- IMCL Low Cost Submersible Pressure Sensor - Economical IP68 protected sensor with stainless steel 316L housing and Ceramic strain gauge sensing diaphragm for measuring liquid depth pressure.
LMP305 Borehole Level Transmitter - Submersible stainless steel pressure transmitter ideal for geotechnical surveying with a 19mm diameter for measuring hydrostatic water level in bore-holes.
LMP307 Submersible Level Transmitter - Submersible level transmitter for measuring liquid level with a 4-20mA current loop or a 0-10V voltage output plus optional ATEX approval for intrinsically safe use in hazardous areas in ranges from 1mH2O up to 250mH2O. The LMP307 is suitable for use on potable water with no leaching, and can be supplied with a drinking water certificate according to DVGW and KTW.
LMK458 Marine Approved Hydrostatic Level Transmitter - Marine approved level transmitter with 4-20mA output for measuring level of contents inside ship ballast, fuel, liquid cargo or wastewater tanks
LMK307 Submersible Waste Water Level Sensor - Submersible waste water level sensor with optional intrinsic safety certification for monitoring the level of sewage and effluent in water treatment plants.
- Modbus RTU RS485 submersible borehole water level sensor
- Utility manhole vault 4mH2Og range 0.5-4.5V out water level sensor
- 40m RS485 Modbus RTU submersible borehole pump drawdown depth sensor
- CIP protected dairy sensor for measuring level of milk in 6m high tank
- Underground rain water storage tank level sensor and readout for 2 metre depth
- Borewell water level sensor for 100m water height
- 200m deep well pump water level sensor, switch & display
- Arduino UNO compatible borehole water level sensor
- Borehole drawdown low voltage power supply 25m depth sensor
- Genset hydrostatic sensor for measuring level of small diesel tank up to 12 inches
- Hot leachate level transmitter for 20m deep well monitoring on landfill sites
- Dairy 100 deg C wash water tank 2m range submersible level sensor