ENDRESS+HAUSER  FTI77-A1AVVRG1W2A1A

Application

Solicap S is used for point level detection at high temperatures in bulk solids. It can be operated in minimum or maximum failsafe mode.

Due to its robust construction, it can also be used to provide accurate measurements in applications with very high lateral loads (up to 800 Nm for sword version) and in applications with abrasive media.

Active buildup compensation facilitates safe switching, even in the event of media that tend to cause buildup.

Your benefits

• Extremely robust design for harsh process conditions
• Easy and fast commissioning as calibration is performed at the press of a button
• Universal application thanks to wide range of certificates and approvals
• Two-stage overvoltage protection against static discharges from the silo
• Active buildup compensation for bulk solids with caking tendency
• Use in safety systems requiring functional safety to SIL2/SIL3 in combination with electronic insert FEI55
• Increased safety due to permanent automatic monitoring of electronics
• Reduction in storage costs thanks to easy-to-shorten sword model and rope model

Measuring principle

The principle of capacitance point level detection is based on the change in capacitance of a capacitor as a result of the probe being covered by bulk solids. The probe and container wall (conductive material) form an electric capacitor. When the probe is in air (1), a certain low initial capacitance is measured. If the container is being filled, the capacitance of the capacitor increases as more of the probe is covered (2), (3).

The point level switch switches when the capacitance C S specified during calibration is reached.

In addition, a probe with inactive length ensures that the effects of medium buildup or condensate near the process connection are avoided. A probe with active buildup compensation compensates for the effects of buildup on the probe in the area of the process connection.