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Datasheet summary

Soliphant T FTM20

Engineering summary from PDF text extraction for Soliphant T FTM20. Verify every value with the OEM datasheet.

Summary

Product identification

  • Product Name: Soliphant T FTM20, FTM21
  • Type: Vibronic point level switch for bulk solids.
  • Application: Suitable for fine-grained or coarse-grained, non-fluidised bulk solids. Available with certificates for use in dust incendive hazard areas.
  • FTM20: Compact design, 250 mm vibrating rod, installation in any direction.
  • FTM21: Vibrating rod with extension pipe in lengths of 500 mm, 1000 mm, 1500 mm, installation in any direction.
  • Typical applications: Cereals, coffee beans, sugar, animal feed, rice, detergents, dye powder, chalk, gypsum, cement, sand, plastic granules.

Benefits

  • No calibration required ("plug and play")
  • Insensitive to build-up, maintenance-free
  • No mechanically moving parts, wear-free, long operating life
  • Sensor material 316L offers resistance to abrasion
  • F16 plastic housing with sight glass (F18 aluminium housing also available)
  • Insensitive to external vibration and flow noises
  • Available with explosion protection (ATEX II 1/3 D, FM, or CSA approval)

Measuring Principle

The device uses a piezoelectric drive to excite a vibrating rod to its resonance frequency. If the medium covers the rod, its vibration amplitude changes (damps). The electronics compare this amplitude to a set value to indicate if the rod is vibrating freely or is covered by medium.

Measuring System

The Soliphant T is a compact electronic switch consisting of the Soliphant T unit (FTM20 or FTM21 with FEM22 or FEM24 electronic insert) and connection to a supply point and control systems.

Cable Specifications

  • Temperature Resistance: Connecting cables must withstand an ambient temperature of +20 K.
  • Cable Entries: M20x1.5 (cable gland), NPT ½, G ½.

Input

  • Measured Variable: Level (dependent on mounting location and extension pipe length).
  • Measuring Range: Dependent on mounting location and selected pipe extension length (500 mm, 1000 mm, 1500 mm).
  • Measuring Frequency: 700...800 Hz.

Output

  • Galvanic Isolation:
    • FEM22: Between sensor and power supply.
    • FEM24: Between sensor, power supply, and load.
  • Switch Behaviour: Binary.
  • Power-on Behaviour: Output initially set to "signal on alarm" for max. 3 s, then switches to the correct output signal.
  • Fail-safe Mode:
    • MAX: Output switches to "signal on alarm" when the vibrating rod is covered (for overfill protection).
    • MIN: Output switches to "signal on alarm" when the vibrating rod becomes exposed (for empty running protection).
    • Switchable at the electronic insert.
  • Switching Delay: 0.5 s (sensor covered), 1 s (sensor exposed).
  • Ex Specifications: FEM22, FEM24 support explosion protection for dust-air mixtures (Dust-Ex, DIP).

FEM22 electronic insert (DC PNP)

  • Power Supply: 10…45 V DC, Ripple max. 5 V (0…400 Hz).
  • Current Consumption: Max. 18 mA.
  • Power Consumption: Max. 0.81 W.
  • Separation Voltage: 2.2 kV.
  • Overvoltage Protection: Category II.
  • Electrical Connection: Three-wire DC connection with cable entry / M12 plug.
  • Output Signal: Positive signal at output (PNP), output blocked at point level.
  • Signal on Alarm (Device Failure/Power Failure): < 100 μA.
  • Connectable Load:
    • Load current: Max. 350 mA (cyclical overload and short-circuit protection).
    • Max. load voltage: 45 V.
    • Residual current: < 100 μA (transistor blocked).
    • Capacitive load: Max. 0.5 μF (at 45 V), Max. 1.0 μF (at 24 V).
    • Residual voltage: < 3 V (transistor switched through).

FEM24 electronic insert (AC/DC with relay output)

  • Power Supply: 19…253 V AC (50/60 Hz) or 19…55 V DC.
  • Power Consumption: Max. 1.3 W.
  • Separation Voltage: 2.2 kV.
  • Overvoltage Protection: Category II.
  • Electrical Connection: Universal current connection with relay output (DPDT).
  • Output Signal: Relay output.
  • Signal on Alarm (Power Failure): Relay de-energised.
  • Connectable Load:
    • AC: Max. 6 A, Max. 253 V; Max. 1500 VA (cos φ = 1), Max. 750 VA (cos φ > 0.7).
    • DC: Max. 6 A to 30 V, Max. 0.2 A to 125 V.
    • For functional extra-low voltage circuits (double insulation): Sum of relay output and power supply voltages max. 300 V.

Operating Conditions

  • Ambient Temperature Range: –40 to +70 °C (–40 to +158 °F).
  • Storage Temperature: –40 to +85 °C (–40 to +185 °F).
  • Climate Class: As per DIN IEC 68 Part 2-38, Fig. 2a.
  • Degree of Protection: IP66/IP67, NEMA4X.
  • Vibration Resistance: DIN 60068-2-27 / IEC 68-2-27: shock 30 g; vibration 0.01 g²/Hz.
  • Electrical Safety: IEC 61010, CSA 1010.1-92, FM3600.
  • Electromagnetic Compatibility:
    • Interference emission: EN 61326, Class B.
    • Interference immunity: EN 61326, Annex A (Industrial).
  • Installation Height: Up to 2000 m (6600 ft) above sea level.
  • Thermal Shock Resistance: Maximum 120 K.
  • Limiting Medium Pressure Range: –1 to 25 bar (–14.5 to 362.5 psi).
  • Maximum Working Pressure (MWP): 25 bar (362.5 psi).
  • Burst Pressure: 100 bar (1450 psi).
  • Grain Size: ≤ 25 mm.
  • Bulk Density: ≥ 200 g/l, not fluidised.

Mechanical Construction

  • Design, Dimensions: Available in compact (FTM20) and pipe extension versions (FTM21) with lengths of 500 mm, 1000 mm, 1500 mm.
  • Weight:
    • FTM20/FTM21 with F16 housing, FEM24 and R 1 thread: Approx. 1.0 kg (2.21 lbs).
    • 500 mm extension: Approx. 1.3 kg (2.87 lbs).
    • 1000 mm extension: Approx. 2.0 kg (4.41 lbs).
    • 1500 mm extension: Approx. 2.6 kg (5.73 lbs).
  • Material:
    • F16 Housing: Polyester.
    • F18 Housing: Aluminium EN-AC-AlSi10Mg.
    • Process connections: R1, R1½ (316L), NPT 1¼, NPT 1½ (316L).
    • Sensor: 316L.

Operability

  • Display Elements:
    • FEM22: One green LED (operation), one yellow LED (electronic switch closed).
    • FEM24: One green LED (operation), one yellow LED (contact closed/relay energised).
  • Operating Elements: Switches for safety mode (MAX/MIN) and bulk density/density setting (200 g/l or 400 g/l).

Certificates and Approvals

  • CE Mark: Declaration of Conformity available.
  • Ex Approval: Information on Ex versions available from sales centers; separate documentation provided. Approvals include ATEX II 1/3 D, CSA, FM, IEC Ex, NEPSI, EAC Ex.
  • Other Standards and Guidelines: Low Voltage Directive (73/23/EEC), DIN EN 61010 Part 1, EN 61326.
  • Pressure Equipment Directive (PED) 2014/68/EU: Applicable for pressure instruments with permitted pressure ≤ 200 bar. Devices without a pressure-bearing housing are outside the scope.
  • RCM Tick Mark: Complies with Australian Communications and Media Authority regulations.
  • EAC Conformity: Meets legal requirements of applicable EAC Directives.
  • RoHS: Complies with EU Directive 2011/65/EU.

Accessories

  • Sliding Sleeve: Available for pressurized and unpressurized containers.

Spare Parts

  • FEM22 electronic insert: 52025688
  • FEM24 electronic insert: 52025691
  • Covers for F16 and F18 housings.

Supplementary Documentation

  • Operating Instructions: KA00227F
  • Certificates: ATEX, IECEx, NEPSI.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror

Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.