Product Description
Endress+Hauser FTL51-GGR2BB7G4A Vibrating Level Switch
The Endress+Hauser Liquiphant M FTL51-GGR2BB7G4A is a robust and reliable vibrating level switch (tuning fork) designed for point level detection in all types of liquids. As part of the proven Liquiphant series, it operates on the principle of a vibrating fork that changes its frequency when submerged in a liquid, providing a highly dependable switching signal. This device is unaffected by changing media properties such as conductivity, build-up, turbulence, or air bubbles. The FTL51 is ideal for a wide range of industrial applications, including overfill prevention and pump dry-run protection, and features a SIL2/SIL3 safety rating in accordance with IEC 61508 for critical processes.
Technical Specifications:
- Model: FTL51-GGR2BB7G4A
- Process Connection: Thread ISO228 G1, 316L Stainless Steel
- Electronics Output: Relay DPDT, 19-253VAC / 19-55VDC
- Housing: Aluminum, IP66/67 NEMA4X with M20 cable entry
- Process Temperature Range: -50°C to 150°C (-58°F to 302°F)
- Process Pressure Range: -1 to 64 bar (-14.5 to 928 psi)
- Safety Integrity Level: SIL2 / SIL3 according to IEC 61508
- Approvals: Suitable for non-hazardous areas

Endress+Hauser FTL51-GGR2BB7G4A Vibrating Level Switch
Buy the Endress+Hauser FTL51-GGR2BB7G4A Liquiphant M vibrating fork level switch. Features a G1 process connection, DPDT relay output, and SIL2/SIL3 rating for reliable point level detection in liquids.





