Analog Inventory & Line Leak Probes

Analog Inventory & Line Leak Probes

TSP-LL2 liquid level probes are advanced instruments that use mangetostrictive position measurement technology to accurately report inventory levels in storage tanks.

  • Uses innovative magnetostrictive position measurement technology to report liquid levels.
  • Unparalleled accuracy and performance when used with an EVO™ Series ATG.
  • Screw-in electrical connector provides quick installation or removal eliminating the need to resplice wires.
  • Instrinsically safe circuits for hazardous locations.
  • Probes can report the level of up to 3 floats.
  • The TSP-LL2 is capable of precise leak detection, density
    measurement and inventory monitoring.
  • 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
  • LL2- Interface cable: 0' to 200' -Belden™ 87760, 0' to 400' -Belden™ 87761, 0' to 1500' -Belden™ 89182, consult factory for others.
  • Shaft, E-ring and washer materials: # 316 stainless steel. Housing-anodized aluminum, MIL-A-8625C, Type 2, Class 2. Floats-nitrophyl, PVDF and nickel plated brass.
  • Float kits must be ordered serparately.
  • Bottom mount type installation kit required.


  • 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.
  • Probes are available in many sizes that are suitable for all common tanks.
  • Easily installed into 2", 3", or 4" riser pipes.
Model Number Description
TSP-LL2-161-I 13' (3.96 m) digital inventory control probe
TSP-LL2-173-I 14' (4.26 m) digital inventory control probe
TSP-LL2-185-I 15' (4.57 m) digital inventory control probe
TSP-LL2-197-I 16' (4.87 m) digital inventory control probe
TSP-LL2-209-I 17' (5.18 m) digital inventory control probe
TSP-LL2-221-I 18' (5.48 m) digital inventory control probe
  • Orders for probes larger than 149" cannot be cancelled and are non-returnable.
  • Probes larger than 149" may require special floats and install kits.
  • These probes are used with all FFS ATG consoles.
  • Not for leak detection.
  • Float kits must be ordered separately.
  • Comes with bottom mount hardware. For replacement hardware kits, order TSSP-BMKT.


Title Type Size
CD_FMS_TSP-LL2-XXX_001.dwg DWG 0.24 MB
CD_FMS_TSP-LL2-XXX_001.pdf PDF 0.02 MB


Title Type Size
000-2081 LL2 Probe Installation Guide.pdf PDF 1.69 MB