Analog Inventory & Line Leak Probes

Analog Probes Hero.psd

Analog Inventory & Line Leak Probes

Analog inventory and leak detection probes provide accurate tank level monitoring and reporting with optional leak detection capabilities. These probes employ magnetostrictive position measurement technology to accurately report inventory levels in storage tanks.

  • Models available for inventory control or inventory control with leak detection.
  • Capable of precise leak detection, density measurement, and inventory monitoring.
  • Suitable for use with gasoline, diesel, DEF/AdBlue®, and other manufacturer approved products.
  • Bottom mounted installation for fast and simple install.
  • Screw-in electrical connector provides quick installation or removal, eliminating the need to re-splice wires.
  • Probes are available in many sizes that are suitable for all common tanks.
  • Easily installed into 2", 3" or 4" riser pipes.


  • Operating temperature: -40° to 140 °F (-40° to 60 °C)
  • Storage temperature: -40° to 158 °F (-40° to 70 °C)
  • Non-linearity: ±0.025% of full scale
  • Repeatability: ±0.001"
  • Temperature sensors: 5 thermistors located in the shaft
  • Temperature resolution: ±0.02 °F (±0.01 °C)
  • Probe pigtail: 10' long three conductor cables with shields and polyurethane jacket
  • Compatible with up to three floats for product, water, phase separation detection, or density measurement.
  • Compatible with Franklin Fueling Systems Automatic Tank Gauges (ATGs) including: EVO™ 600, EVO™ 6000, EVO™ 550, EVO™ 5000, TS-5, TS-550, TS-5000, Colibri®,


  • The leak detection probes are typically used for underground storage tanks and petroleum applications when static or SCALD leak detection is required.
  • The inventory control probes are typically used for aboveground storage tanks, chemical or oil waste, or underground storage tanks that do not require in-tank leak detection.

Approvals & Certifications

  • UL & cUL listed, ATEX, IECEx


An electromagnetic field is created inside the probe head and forms around a long waveguide within the probe shaft when position measurements are taken. The electromagnetic field interacts with the magnetic field of the float(s) and produces a shock wave in the waveguide that travels at a known speed. When the shock wave is detected at the probe head, the probe creates a signal that corresponds precisely to the product level. Product expansion calculations are enabled by temperature sensors that are located at various points in the probe shaft.

Leak Detection Probes


Model Number Description
TSP-LL2-101 CN 101” analog leak detection probe
TSP-LL2-113 CN 113” analog leak detection probe
TSP-LL2-125 CN 125” analog leak detection probe

Inventory Control Probes

Model Number Description
TSP-LL2-101-I CN 101” analog inventory probe
TSP-LL2-113-I CN 113” analog inventory probe
TSP-LL2-125-I CN 125” analog inventory probe
TSP-LL2-158-I 158” analog inventory probe
TSP-LL2-161-I 161” analog inventory probe
TSP-LL2-167-I 167” analog inventory probe
TSP-LL2-168-I 168’ analog inventory probe
TSP-LL2-170-I 170” analog inventory probe
TSP-LL2-173-I 173” analog inventory probe
TSP-LL2-179-I 179” analog inventory probe
TSP-LL2-185-I 185” analog inventory probe
TSP-LL2-197-I 197” analog inventory probe
TSP-LL2-209-I 209” analog inventory probe
TSP-LL2-215-I 215” analog inventory probe