Liquiphant M FTL51C (Technical Information)

1 TI347F/00/enTechnical InformationLiquiphant M FTL51 CVibration Limit SwitchLevel limit switch for all liquids. With highly corrosion-resistant coating. Also suitable for use in hazardous Liquiphant M is a level limit switch for use in all liquids for temperatures from -50 C to 150 C (up to 230 C on request) for pressures up to 40 bar for viscosity up to 10000 mm2/s for densities g/cm3 or g/cm3, other settings on request foam detection on requestThe function is not affected by flow, turbulence, bubbles, foam, vibration, solids content or build-up. The Liquiphant is thus the ideal substitute for float all wetted parts of the sensor (process connection, extension pipe and tuning fork)

2 Are coated in enamel or various plastics, the unit can be used in very aggressive ia, EEx de and EEx d protection enable it to be used in hazardous benefits Use in safety systems requiring functional safety to SIL2/SIL3 in accordance with IEC 61508/IEC 61511-1 Optimally adapted to the process thanks to various materials for corrosion-resistant coating Large number of process connections to choose from flanges of various standards universal use Wide variety of electronics, NAMUR, relay, thyristor, PFM signal output: the right connection for every process control system PROFIBUS PA protocol: for commissioning and maintenance No calibration: quick, low-cost start-up No mechanically moving parts: maintenance-free,no wear, long operating life Monitoring of fork for damage: guaranteed function FDA approved materials (PFA Edlon) Liquiphant M FTL51C2 Endress+HauserTable of contentsApplication.

3 4 Level limit detection .. 4 Function and system design.. 4 Measuring principle .. 4 Modularity .. 4 Electronic versions for level limit switches .. 5 Electronic versions for level sensor .. 5 Galvanic isolation .. 5 Design .. 5 Input .. 5 Measured variable .. 5 Measuring range (detection range) .. 5 Product density .. 5 Electronic insert FEL51 (AC 2-wire) .. 6 Power supply .. 6 Electrical connection .. 6 Output signal .. 6 Signal on alarm .. 6 Connectable load .. 6 Electronic insert FEL52 (DC PNP) .. 7 Power supply .. 7 Electrical connection .. 7 Output signal .. 7 Signal on alarm.

4 7 Connectable load .. 7 Electronic insert FEL54 (AC/DC with relay output) .. 8 Power supply .. 8 Electrical connection .. 8 Output signal .. 8 Signal on alarm .. 8 Connectable load .. 8 Electronic insert FEL55 (8/16 mA) .. 9 Power supply .. 9 Electrical connection .. 9 Output signal .. 9 Signal on alarm .. 9 Connectable load .. 9 Electronic insert FEL56 (NAMUR L-H edge) .. 10 Power supply .. 10 Electrical connection .. 10 Output signal .. 10 Signal on alarm .. 10 Connectable load .. 10 Electronic insert FEL58 (NAMUR H-L edge) .. 11 Power supply .. 11 Electrical connection.

5 11 Output signal .. 11 Signal on alarm .. 11 Connectable load .. 11 Electronic insert FEL57 (PFM).. 12 Power supply .. 12 Electrical connection .. 12 Output signal .. 13 Signal on alarm .. 13 Connectable load .. 13 Electronic insert FEL50A (PROFIBUS PA) .. 14 Electrical connection .. 14 Output signal .. 15 Signal on alarm .. 15 Connection and function .. 16 Connecting cables .. 16 Safety mode .. 16 Switching time .. 16 switch -on behaviour .. 16 Performance characteristics.. 16 Reference operating conditions .. 16 Maximum measured error .. 16 Repeatability.

6 16 Hysteresis .. 16 Influence of medium temperature .. 16 Influence of product density .. 16 Influence of medium pressure .. 16 Operating conditions .. 17 Installation .. 17 Installation instructions .. 17 Examples of mounting with regard to the viscosity of the liquid and the tendency to form build-up .. 18 Orientation .. 19 Environment .. 20 Ambient temperature range .. 20 Ambient temperature limits .. 20 Storage temperature .. 20 Climate class .. 20 Degree of protection .. 20 Vibration resistance .. 20 Electromagnetic compatibility .. 20 Medium conditions.

7 21 Medium temperature range .. 213 Endress+HauserLiquiphant M FTL51 CThermal shock .. 21 Medium pressure pe .. 21 Test pressure .. 21 Pressure shock .. 21 State of aggregation .. 21 Density .. 21 Viscosity .. 21 Solids content .. 21 Mechanical construction .. 22 Design .. 22 Dimensions (in mm) .. 23 Weights .. 24 Material .. 25 Coating .. 25 Process connections .. 25 Human interface .. 25 Electronic inserts .. 25 Operating concept .. 26 Certificates and approvals .. 26 Certificates .. 26 Combinations of coatings, housings and electronic inserts .. 26 Ordering information .

8 28 Liquiphant M FTL51C product structure .. 28 Accessories .. 31 Cover with sight glass .. 31 Cover with clear screen .. 31 Supplementary Documentation .. 31 Operating Instruction .. 31 technical information .. 31 Funktionale Sicherheit (SIL) .. 32 Safety Instructions (ATEX) .. 32 System information .. 32 Liquiphant M FTL51C4 Endress+HauserApplicationLevel limit detectionMaximum or minimum detection in tanks or pipes containing all kinds of liquids, also in hazardous areas. Particularly suited to very aggressive liquids thanks to high degree of corrosion and system designMeasuring principleThe sensor's fork vibrates at its intrinsic frequency.

9 This frequency is reduced when covered with liquid. This change in frequency causes the limit switch to limit switchLiquiphant M FTL with electronic versionsFEL51, FEL52, FEL54L00-FTL51 Cxx-15-05-xx-xx-000 Level sensorLiquiphant M FTL with electronic versionsFEL55, FEL56, FEL57, FEL58for connecting to a separate switching unit or an isolating amplifier FEL50 Afor connecting to PROFIBUS PA segmentL00-FTL51 Cxx-15-05-xx-en-000 FEL51/52 unitPLCI solatingamplifierSegmentcouplerLiquiphan t M FTL51 CEndress+Hauser5 Electronic versions for level limit switchesFEL51:Two-wire AC version; switch the load directly into the power supply circuit via the : Three-wire DC version; switch the load via the transistor (PNP) and separate : Universal current version with relay output; switch the loads via 2 floating change-over versions for level sensorFEL55: For separate switching unit; signal transmission H-L edge 16/8 mA along two-wire cabling(AI module 4-20 mA to EN 61131-2).

10 FEL56: For separate switching unit; signal transmission L-H edge / mA to NAMUR (IEC 60947-5-6) on two-wire : For separate switching unit; signal transmission H-L edge / mA to NAMUR (IEC 60947-5-6) on two-wire of connecting cabling and other devices by pressing a key on the electronic : For separate switching unit; PFM signal transmission; Current pulses superposed on the power supply along the two-wire cabling. Cyclical checking from the switching unit without changing : For connecting to PROFIBUS PA; Cyclic and acyclic data exchange acc. to PROFIBUS PA Profile Discrete InputGalvanic isolationFEL51, FEL52, FEL50A: Between sensor and power supplyFEL54: Between sensor and power supply and loadFEL55, FEL56, FEL57, FEL58: See switching unit connectedDesignFTL51C.