Endress+Hauser FMI51, FMI52 Capacitive Level Transmitter Operating Instructions

About this manual

The Liquicap M FMI51 and FMI52 are compact capacitive level transmitters designed for continuous measurement of liquids. The manual provides safety instructions, designated use, and guidelines for safe installation and commissioning, emphasizing the need for trained personnel.

It details installation steps, wiring recommendations, operation options, troubleshooting, and technical data such as capacitance values, measuring frequency, output signal, and probe specifications. Accessories, maintenance procedures, and commissioning menus are also described.

What's inside

• Safety instructions
• Identification
• Installation
• Wiring
• Operation
• Commissioning
• Maintenance
• Accessories
• Troubleshooting
• Technical data

Specifications

Frequently asked questions

What is the recommended torque for flange bolts?

The recommended torque is 60 to 100 Nm.

What is the basic capacitance of the probe?

The basic capacitance is approximately 18 pF.

Which output signal does the transmitter provide?

It provides a 4 to 20 mA output with HART protocol.

How can the housing be aligned?

Rotate the housing up to 270°, loosen the Phillips screw, turn to the desired position, then tighten the screw.