HFS
Horizontal Float Switch
HFS
Horizontal Float Switch
The HFS is a 2-wire, non-discriminating liquid sensor designed for liquid detection in dry fiberglass tank interstitial spaces.

Horizontal Float Switch Sensor
- Fiberglass interstitial monitoring using a 2-wire sensor.
- For dry fiberglass tank interstitial monitoring.
- Highly reliable magnetic-float/reed-switch technology.
- Chemical-resistant materials.
- Easily fits tight interstitial spaces.
- Rounded design makes it easy to remove for cleaning and reinstall after an alarm condition has been triggered or for maintenance and testing.
- Each HFS comes with a 25’ (7.6 m) oil-resistant cable.
For fiberglass tanks, the sensor is pulled into the interstitial space using a “fish” string wire. Optional installation kits are available which include a riser cap and other parts required to complete the installation.
SENSOR SELECTION
No matter what the monitoring application is, Franklin Fueling Systems offers a sensor solution tailored to the specific requirements of each application.
Let us help you choose the right sensor for your application.
SENSOR SELECTION GUIDE
Application
For dry tank interstitial monitoring.
Approvals/Certifications
- UL listed.
Model Number | Description |
---|---|
FMP-HFS2 | Horizontal float switch sensor (EVO™ 550,EVO™ 5000, EVO™ 600, and EVO™ 6000) |
TSP-KI2 | Interstitial sensor riser cap kit for 2" riser pipes |
TSP-KW4 | Interstitial sensor riser cap kit for 4" riser pipes |
-
Note: The FMP-HFS2 wires to the 2 wire sensor module or the 3 wire sensor module. It cannot be wired to the probe module.
Brochures
Title | Type | Size | |
---|---|---|---|
FFS-0635 Sensors Datasheet.pdf | 3.12 MB |
Catalogs
Title | Type | Size | |
---|---|---|---|
FFS-0216 (UL) FFS Product Catalog.pdf | 62.67 MB | ||
FFS-0807 (EN) Product Catalogue.pdf | 48.43 MB | ||
FFS-0367 (UL) Site Starters Ordering Guide.pdf | 52.07 MB |
Manuals
Title | Type | Size | |
---|---|---|---|
000-0326 FMP-HFS2 Sensor Installation Guide.pdf | 1.08 MB | ||
TB0420-03 Field Wiring Cable Selection Guide.pdf | 0.57 MB |
Drawings
Title | Type | Size | |
---|---|---|---|
CD_FMS_TSP-KI2_001.dwg | DWG | 0.29 MB | |
CD_FMS_TSP-KI2_001.pdf | 0.03 MB |