Endress+Hauser FTS 20 Mode D'emploi page 16

Function
An element built into the floating switch switches when a deviation in the horizontal is detected.
The switching process is triggered by the movement of a steel ball and, depending on the version,
is carried out by an inductive initiator or a microswitch.
The inductive initiator acts as a switching output and provides a switching signal to EN 60947-5-6
(NAMUR). The microswitch version is a two-way switch.
Features
• Reliable level limit detection in liquids
• Electrical connections to NAMUR for hazardous areas (to Zone 1) or change-over contact
(AC/DC) for universal standard application
• Different cable materials for different media
E
..
• Small diameter for simple installation using tapped hole G1A
4 Endress + Hauser