Liquid Level – Hydrostatic (HP1)

Economical Wireless Liquid Level Monitoring Solution.

  • One analog input (0-5 Volt, 24-bit ADC)
  • Sensor up to 150 ft / 457 m length
  • Over 10-year battery life
  • Self-contained, rugged design
  • Class I, Division 1 (Zone 0), intrinsically safe
  • -40 ˚C to 70 ˚C / -40 ˚F to 158 ˚F
  • 900 MHz: Up to 7500 ft (2.3 km)
  • 2.4 GHz: Up to 4.3 miles (7 km)
  • Secure AES encryption


The OleumTech™ HP1 Hydrostatic Transmitter determines level measurement by monitoring pressure at the bottom point of vented top mount tanks, deep wells, water towers, rivers, and lakes. This Transmitter is equipped with one 0-5 VDC analog input and provide high resolution 24-bit analog to digital conversion (ADC). The HP1 Transmitter can supply up to 9.5 VDC to the connected submersible pressure sensor. The HP1 also provides removable wiring terminal blocks in its junction box housing to facilitate the wiring process.


HP1 Transmitter relies on power from a replaceable battery. The system is engineered to achieve maximum battery life, providing +10 years of life from a single battery.


Designed for use in Class I, Division 1 (Zone 0) hazardous locations. The HP1 is intrinsically safe, meaning it cannot a cause a spark and can be serviced without being removed from a process.


The Hydrostatic Transmitter is configured using BreeZ Software by OleumTech, provided free of charge.


The HP1 communicate with an OleumTech Wireless Gateway within its network, creating a highly scalable network, accommodating virtually any I/O requirement.