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The new Liquiphant: Digital, simple and safe

Demands in digital times

Who wants to prepare the company for the digital era optimizes its information technology as well as its field level. For the field level it means the right sensors for the future. Crucial is that the sensors provide relevant data to initiate further process optimizations and efficiency gains. The following three demands are important:

  • A second, mobile way of communication with the sensor
  • Information for preventive maintenance and process optimizations
  • Product information like manuals or certificats always mobile on-site at hand

IIoT ready

The new Liquiphant FTL51 is specialized for the process industry and already developed according to IEC 61508 to be proven directly for SIL2 and SIL3 applications without big efforts. In addition, with Heartbeat Technology it meets the demands for an efficient and safe plant operation as well as for IIoT conditions:

  • Liquiphant guarantees an X-ray view into the plant with Heartbeat Technology. It verifies the health status of the sensors without process interruption at each time via Bluetooth® Technology.
  • An automatically generated verification report shows a frequency tracking of the sensor data and with this provides important preconditions for predictive maintenance. You easily identify beginning corrosion and evaluate the maintenance effort. On this basis you derive possible process optimizations.
  • Recurring proof tests according to SIL or WHG you conduct simply mobile with an intuitive wizard and receive an automatic documentation at the end.

How vibronic arose

Towards the end of the 1970s, Endress+Hauser founder Georg H. Endress created a vision of a permanently sealed sensor made entirely of metal. Endress’ vision involved a sensor with a single rod to check the presence of liquid. Capacitive and conductive measuring principles were unsuited to the task, since they could not be used in an instrument composed entirely of metal.

At the start of the 1980s, a group of developers devised a solution to their employer’s conundrum by developing a symmetrical double-rod device. A new measuring principle was born: vibronic.

A piezoelectric device causes the fork to vibrate. When the medium covers the metallic fork, the vibration frequency changes, and the sensor converts this information into an output signal.

Until today an installed base of more than 6 million vibronic Point level switches worldwide is testament to the Liquiphant’s day-to-day reliability. The universal measuring principle does not need any adjustment for different media. Today you have mobile access to the data. Liquiphant is designed according to functional safety principles and is very easy to use.

Technical data

  • Process temperature from -60°C to +150°C
  • Process pressure up to 100bar
  • Ambient temperature from -50°C up to +70°C
  • Viscosity up to 10.000 mPa*s
  • Extension tube up to 6 m
  • Medium density >0.4 g/cm³