Function And System Design; Point Level Detection; Measuring Principle; Measuring System - Endress+Hauser Liquiphant FTL64 Technical Information

Liquiphant FTL64

point level detection

Measuring principle

Measuring system

Dependability

Measured variable

Measuring range

Endress+Hauser

Function and system design

Maximum or minimum detection for liquids in tanks or pipes in all industries. Suitable for leakage
monitoring, pump dry-running protection or overfill prevention, for example .
Specific versions are suitable for use in hazardous areas.
The point level switch differentiates between the "covered" and "not covered" conditions.
Depending on the MIN (minimum detection) or MAX (maximum detection) modes, there are two
possibilities in each case: OK status and demand mode.
OK status
• In MIN mode, the fork is covered, e.g. Pump dry running protection
• In MAX mode, the fork is not covered e.g. overfill prevention
Demand mode
• In MIN mode, the fork is not covered e.g. pump dry running protection
• In MAX mode, the fork is covered e.g. overfill prevention
The sensor' s tuning fork vibrates at its intrinsic frequency. As soon as the liquid covers the tuning
fork, the vibration frequency decreases. The change in frequency causes the point level switch to
switch.
A
 1 Example of a measuring system
A Device for direct connection of a load
B Device for connection to a separate switching unit or PLC
1 Switching unit, PLC etc.
Device-specific IT security
The device settings and the diagnostic data can be read out via Bluetooth. Device settings cannot be
changed via Bluetooth.

Input

Level (point level), MAX or MIN safety
Depends on the installation location and the pipe extension ordered
Standard pipe extension up to 3 m (9.8 ft) and up to 6 m (20 ft) on request.
B
1
A0042328
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