Wireless Liquid Level Transmitter and Level Gauge

Wireless Tank Level Monitoring Solution Using Accurate, Reliable Resistive Technology.

  • Wireless Liquid Level Transmitter and Resistive Sensor combination is designed for industrial tank level monitoring applications
  • Wireless Transmitter mates with either rigid (316 stainless steel) or flexible (PTFE) tank level gauge of various custom lengths
  • “LL3” Transmitter version allows monitoring of three processes: product (oil), interface (water, wastewater) and temperature
  • “LL3-D” head provides everything LL3 offers plus a discrete input for alarming high level or thief hatch open/close detection
  • High accuracy and reliability using field-proven reed switch design
  • Sensor supports wide temp. range -40 ˚C to 120 ˚C / -40 ˚F to 248 ˚F
  • Provides excellent compatibility with wide range of chemicals
  • US Patent 8,763,455 B1
  • API 18.2 Compliant – (Rigid Sensor with 1/4″ resolution and 1/8″ accuracy only)
  • Highly resistant to corrosion and paraffin build-up (extremely low maintenance product)
  • Quick connect adapter eliminates wiring error and hassle from Transmitter head to sensor
  • Takes only minutes to install, requires only one-time calibration
  • Over 7-year battery life for typical operation
  • Class I, Division 1 (Zone 0), intrinsically safe
  • 900 MHz: Up to 7500 ft (2.3 km)
  • 2.4 GHz: Up to 4.3 miles (7 km)
  • Secure AES encryption

3-in-1 or 4-in-1 LEVEL MONITORING

The OleumTech® Wireless Liquid Level Transmitter is designed to work with OleumTech Resistive Level Sensor that is offered in various lengths.  This highly accurate and reliable tank level monitoring solution is designed for use in hazardous locations including Class I, Division 1 (Zone 0).  The sensor itself provides dual-float operation for simultaneously monitoring product (oil), interface (water/wastewater), and temperature using integrated RTD sensor.  The LL3 version of the Transmitter provides 3-in-1 monitoring capability while the LL3-D version provides 4-in-1 measurement capability with an added discrete input.  The discrete can be wired to a high level switch or thief hatch open/close detection system for implementing additional safety measures or to meet regulatory compliance.


The Wireless Resistive Transmitter mates to either OleumTech Flex or Rigid Resistive Sensor that is sold separately.  The flex level sensor is available in 8 to 38 ft (2.4 to 11.6 m) lengths while the rigid level gauge is offered in 2 to 17 ft (0.6 to 5.2 m) lengths.  Both versions are available in 1 ft (0.3 m) increments and can be ordered with a single or dual-float configuration option. The sensor only requires a one-time calibration.  The entire installation takes minutes rather than hours or days.


The device features a 32-character local LCD display for instantly reading process data, battery voltage, and RF strength (RSSI).  When the display is set to configuration mode, users can set all of its parameters, perform calibration, and connect to a network just using the push button interface without the need of any configuration cables.


The LL3 and LL3-D Transmitters rely on power from a replaceable battery. The system is engineered to achieve maximum battery life, providing +7 years of life from a single battery.


Designed for use in Class I, Division 1 (Zone 0) hazardous locations.  These Transmitters and Sensors are intrinsically safe, meaning they cannot a cause a spark and can be serviced without being removed from a process.


The OTC Sensor Network is managed using the BreeZ Software by OleumTech, provided free of charge. The High Level Switch Transmitter can be configured using the push button interface or BreeZ Software.


The Resistive Transmitter is one of many Wireless Transmitters that communicates with an OleumTech Wireless Gateway within its network, creating a highly scalable network, accommodating virtually any level or I/O requirement.