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RFnivo® - RF 8100 Capacitive Sensors

Brand: UWT GmbH

The RFnivo® RF-8100 Capacitive Sensor offers a powerful, reliable point-level solution for bulk solids, leveraging RF admittance to distinguish true coverage from caking or bridging. By uniting robust mechanical construction (stainless steel probes, sealed enclosures) with advanced guard technology, the sensor reduces false alarms common to simpler capacitive or mechanical switches, ensuring stable toggles across dusty, abrasive, or mildly sticky conditions.

Key Takeaways for Plant Engineers and Operators

Minimal Calibration
The device arrives configured for standard solids; borderline scenarios (e.g., extremely low dielectric) may need slight trim adjustments.

Guarded Probe
Helps offset partial buildup, enabling stable detection in dusty or bridging-prone bins.

Mechanical Durability
Few moving parts, sealed electronics for IP66/IP67, with high-temp or extended versions as needed.

Integration Flexibility
Relay, transistor, or two-wire outputs tie easily into PLCs, SCADA, or local alarm circuits, with optional fail-safe modes for safety-critical processes.

By selecting an appropriate probe length, ensuring correct mounting and clearances, verifying proper wiring, and performing routine maintenance checks, plant personnel can harness the RFnivo RF-8100’s robust sensing capabilities for long-term, cost-effective level detection. This fosters more efficient inventory management, reducing downtime, preventing spills, and helping operators maintain consistent production throughput in demanding industrial settings.

Features
  • Reliable measurement results even with viscous, adhesive medium due to "Active Shield" technology
  • "Inverse Frequency Shift" technology ensures precise measurement results
  • Maintenance-free sensor

The RFnivo® RF-8100 Capacitive Sensor offers a powerful, reliable point-level solution for bulk solids, leveraging RF admittance to distinguish true coverage from caking or bridging. By uniting robust mechanical construction (stainless steel probes, sealed enclosures) with advanced guard technology, the sensor reduces false alarms common to simpler capacitive or mechanical switches, ensuring stable toggles across dusty, abrasive, or mildly sticky conditions.

Key Takeaways for Plant Engineers and Operators

Minimal Calibration
The device arrives configured for standard solids; borderline scenarios (e.g., extremely low dielectric) may need slight trim adjustments.

Guarded Probe
Helps offset partial buildup, enabling stable detection in dusty or bridging-prone bins.

Mechanical Durability
Few moving parts, sealed electronics for IP66/IP67, with high-temp or extended versions as needed.

Integration Flexibility
Relay, transistor, or two-wire outputs tie easily into PLCs, SCADA, or local alarm circuits, with optional fail-safe modes for safety-critical processes.

By selecting an appropriate probe length, ensuring correct mounting and clearances, verifying proper wiring, and performing routine maintenance checks, plant personnel can harness the RFnivo RF-8100’s robust sensing capabilities for long-term, cost-effective level detection. This fosters more efficient inventory management, reducing downtime, preventing spills, and helping operators maintain consistent production throughput in demanding industrial settings.

Features
  • Reliable measurement results even with viscous, adhesive medium due to "Active Shield" technology
  • "Inverse Frequency Shift" technology ensures precise measurement results
  • Maintenance-free sensor

Specifications

Measurement Pprinciple

  • Capacitive

Measuring Task

  • Point Level Measurement
  • Interface Level Measurement

Version

  • Rod Version
  • Rope Version

Medium

  • Liquids

Mounting Position

  • Top
  • Horizontal
  • Angled
  • On a Socket

Ambient Temperature

  • -40° C to +85° C (-40 to +185° F)

Process Temperature

  • -40° C to +200° C (-40 to +392° F)

Process Pressure

  • -1 bar … +35 bar (-14.5 psi … +511 psi)

Minimum Sensitivity

  • DK ≥ 1.5

Housing Type

  • Flameproof

Housing Material

  • Aluminium

Housing Protection Rating

  • IP68, Type 4

Threaded Connection

  • ≥ G 3/4"
  • ≥ R 3/4"
  • ≥ NPT 3/4"

Flange Connection

  • ≥ DN 25 / ≥ 1"

Wetted Materials

  • Stainless Steel 1.4404 (316L)
  • PEEK
  • FKM
  • FFKM
  • PFA

Mechanical Load

  • Rod: 15 Nm

Minimum Immersion Length

  • Rod: 455 mm (17.91")
  • Rope: 605 mm (17.91")

Maximum Immersion Length

  • Rod: 1.4 m (4.71 ft)
  • Rope: 25.4 m (83.4 ft)

Power Supply

  • Universal Voltage: 12-250 Vdc/ Vac
  • 12-30 Vdc

Signal Output

  • Relay SPDT
  • Transistor
  • Profibus PA

Approvals

  • CE, General purpose, ATEX, INMETRO, FM, CSA

Explosion Protection

  • Dust Ignition-proof (Ex t)
  • Intrinsic Safe (Ex i)
  • Explosion-proof/ Flame Proof (Ex d)

Ship Approval

  • Lloyds

Overfill Protection

  • WHG

User Interface

  • LCD Display with Push Buttons
  • PACTware (DTM)
  • DIP Switches + Potentiometer

Optical Indicator

  • LED + Display

Adjustment Possibility

  • Adjutable Sensitivity
  • Adjustable Output Delay
  • Adjustable Switching Point
  • Adjustable Hysteresis
  • Switchable Logic (Fail Safe High - Fail Safe Low)

Applications

  • Chemicals
  • Power
  • Metal
  • Building, Cement & Quarry
  • Food & Beverage
  • Animal Feed

Documentation

Certificates