Water or liquid levels are determined by measuring hydrostatic back pressure in a bubbler system. A low cost plastic tube is submersed in the fluid to be measured up at the “dry” end where the pressure is measured and converted to head of liquid. The key advantage of this technique level measurement is the electronics are remote from the fluid, ensuring long term reliability and low risk during flood events in rivers and streams or level measurements of volatile liquids.

The Pumppro 6150 provides a purge of compressed air into the capillary just before a reading is taken. When activated by the host system (or manually using the keypad), the internal compressor will purge air into the line for several seconds. Following a setting time (to allow the surplus air to escape the capillary tube end), a static pressure condition is achieved. The 6150 takes a pressure and temperature reading and applies a correction algorithm to produce an accurate pressure or water level measurement on the display or to the host system.

• accuracy better than +/-0.05% of full scale
• excellent temperature stability
• fully self contained precision piston air compressor
• compact, robust design
• simultaneous analogue or digital data output
• integrated LCD display and keypad
• low cost of ownership
• ranges 0-5m to 0-70m
• stage - discharge conversion
• stage - volume conversion
• over-pressure protection
• low energy measurement cycle
• modular design using levelpro 6100

• River, irrigation channel water level and discharge monitoring
• Groundwater level and landfill monitoring
• Dam, tank and reservoir levels
• Tidal monitoring
• Waste water monitoring
• Flood warning systems
• Process industry liquid level

The pumppro 6150 combines an integrated air compressor module and levelpro 6100 advanced liquid level sensor to form a fully self contained hydrostatic pressure sensor designed to measure water and liquid levels reliably and accurately. Featuring a Teflon lubricated precision piston air compressor, the 6150 contains all other components required for self generation of compressed air. The pumppro is a stand alone instrument that does not require compressed gas battles, regulators or ancillary pneumatic items.