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

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.
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™ 550/5000, EVO™ 600/6000)
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 communicates with the EVO™ 550/5000 and EVO™ 600/6000 using the 2-Wire Sensor Module (TS-2WSNS) or the 3-Wire Sensor Module (TS-3WSNS). The FMP-HFS2 cannot communicate with the Universal Device Protocol Module (FMP-UDP9) or the Probe Module (TS-PRB).

Brochures

	Title	Type	Size
	FFS-0635 Sensors Datasheet.pdf	PDF	2.64 MB

Catalogs

Title	Type	Size
FFS-0807 (EN) Product Catalogue.pdf	PDF	153.77 MB
FFS-0367 (UL) Site Starters Ordering Guide.pdf	PDF	64.42 MB
FFS-1028 2025 UL Ordering Catalog.pdf	PDF	95.32 MB