Franklin Fueling Systems · Probes & Sensors
Analog Inventory & Leak Detection Probes (LL2)
TSP-LL2 magnetostrictive probes for long tanks and legacy Franklin gauges
Overview
The TSP-LL2 analog probes use the same magnetostrictive principle as Franklin's digital range but send an analog signal to the gauge. They stay in the catalogue for two reasons: they cover longer tanks, and they are compatible with a wide list of consoles. Besides the EVO™ 600, 6000, 550, 5000, 200 and 400, they work with the TS-5, TS-550, TS-5000, Colibri® and older TS-1001, 2011, 750, 504 and 508 gauges, which makes them the practical choice when an older site needs a replacement probe.
Leak detection models are listed at 101", 113" and 125", while inventory-only models run up to 170", suited to large aboveground tanks. The inventory probes can be bottom mounted. Leak detection probes hang from a suspension install kit, which keeps the probe clear of tank deflection.
Each probe can carry up to three floats, so one shaft can report product, water, phase separation or density. Franklin specifies non-linearity at ±0.025% of full scale, repeatability at ±0.001", with five thermistors along the shaft reading temperature to ±0.02° F (±0.01° C). A 10' shielded, polyurethane-jacketed pigtail and a screw-in connector make field wiring and later removal simpler.
Apex supplies and fits TSP-LL2 probes in Lebanon, both for new long tanks and as like-for-like replacements on legacy Franklin gauges.
Key features
- Leak detection models at 101", 113" and 125"
- Inventory-only models up to 170"
- Up to three floats for product, water, phase separation or density
- Non-linearity of ±0.025% of full scale
- Repeatability of ±0.001"
- Compatible with EVO™ and legacy TS and Colibri® gauges
- Installs in 2", 3" or 4" risers
Specifications
Analog Inventory & Leak Detection Probes (LL2) technical data
| Parameter | Value |
|---|---|
| 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 cable | 10' three conductor cables with shields and polyurethane jacket |
| Float compatibility | Up to 3 floats for product, water, phase separation detection, or density measurement |
| Approvals | UL & cUL listed, ATEX, IECEx |
| Model | Description |
|---|---|
| TSP-LL2-101 CN | 101" analog leak detection probe |
| TSP-LL2-125 CN | 125" analog leak detection probe |
| TSP-LL2-125-I CN | 125" analog inventory probe |
| TSP-LL2-170-I | 170" analog inventory probe |
Figures from the manufacturer's published documentation. Confirm the final configuration with Apex at quotation stage.
Questions
Analog Inventory & Leak Detection Probes (LL2): common questions
- Why choose an analog probe over a digital one?
- Mainly for compatibility and length. TSP-LL2 probes work with legacy TS-series and Colibri® gauges as well as EVO™ consoles, and inventory models run up to 170".
- How many floats can a TSP-LL2 probe carry?
- Up to three, for product, water, phase separation detection or density measurement.
- Can the probe be bottom mounted?
- Bottom mounting applies to the inventory probes only. Leak detection probes are suspended with an install kit.
Request a Quotation
Get a quotation for the Franklin Fueling Systems Analog Inventory & Leak Detection Probes (LL2).
Tell us the quantities and the site. Apex prepares every quotation for the project, then supplies, installs and services the equipment in Lebanon.
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