ENDRESS+HAUSER Liquiphant M FTL51-AGR2DB2G5A

Endress+Hauser Liquiphant M Level Switch

Description

This is the Endress+Hauser Liquiphant M, model FTL51-AGR2DB2G5A, a vibrating point level switch designed for reliable detection in liquids. Its robust construction ensures long-term, maintenance-free operation. The sensor operates on the tuning fork principle and is suitable for various industrial applications, including overfill prevention and pump protection. This unit is designed for non-hazardous areas and provides a dependable PNP switching output.

Specifications

• Manufacturer: Endress+Hauser
• Product Line: Liquiphant M
• Order Code: FTL51-AGR2DB2G5A
• Electronics: FEL52
• Power Supply: 10 to 55VDC
• Output Signal: 3-wire DC-PNP
• Max Current: 350mA
• Process Connection: Thread G1 ISO228
• Housing: Aluminum F15, IP66/67 protection
• Sensor Material: 316L Stainless Steel

Label Info

• Order Code: FTL51-AGR2DB2G5A
• Ser.-No.: A503BC01027
• Electronics: FEL52
• Voltage: U=10…55VDC
• Output: PNP, Imax 350mA

Application

Ideal for minimum or maximum level detection in tanks and pipelines across various industries such as food & beverage, chemical, and water/wastewater treatment.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this reused item, you contribute to a circular economy and help avoid approximately 40.0 kg of CO2 emissions associated with new production.

Availability

In stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?
What is the main advantage of a vibrating fork level switch like the Liquiphant M?

The main advantage is its reliability and lack of moving parts. It is unaffected by the liquid’s properties like conductivity, density, or dielectric constant, making it a versatile and maintenance-free solution.

Question?
Can this FTL51 sensor be used in hazardous areas?

Based on the order code ‘A’ for Approval (Non-hazardous area), this specific model is intended for use in safe, non-explosive environments. For hazardous areas, a model with the appropriate ATEX or FM certification would be required.

Question?
What does the PNP output mean for installation?

A PNP output is a “sourcing” type transistor output. When the switch is activated, it connects the output to the positive supply voltage (V+). This is a common standard for connecting to PLCs and control systems. Ensure your PLC input card is compatible with PNP (sourcing) signals.

Last Update: Friday, March 13, 2026

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