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RFnivo® - RF 3300 Capacitive Sensors

Brand: UWT GmbH

The RFnivo® RF-3300 is a capacitance-based RF admittance level sensor purpose-built for point-level detection in diverse bulk solid applications—from dusty grains and sticky powders to abrasive pellets and mild chemical environments. Its active guard technology helps neutralize false signals caused by partial buildup, and its integrated electronics reduce calibration overhead.

By merging mechanical robustness (stainless steel probe, high IP enclosure) with advanced electronic shielding, the RF-3300 ensures consistent toggles, whether used for high-level overfill prevention or low-level depletion alerts.

Features
  • Sensor suitable for high process temperatures
  • Maintenance-free sensor for use in all bulk solids
  • Plug and play level limit switch with automatic calibration

The RFnivo® RF-3300 is a capacitance-based RF admittance level sensor purpose-built for point-level detection in diverse bulk solid applications—from dusty grains and sticky powders to abrasive pellets and mild chemical environments. Its active guard technology helps neutralize false signals caused by partial buildup, and its integrated electronics reduce calibration overhead.

By merging mechanical robustness (stainless steel probe, high IP enclosure) with advanced electronic shielding, the RF-3300 ensures consistent toggles, whether used for high-level overfill prevention or low-level depletion alerts.

Features
  • Sensor suitable for high process temperatures
  • Maintenance-free sensor for use in all bulk solids
  • Plug and play level limit switch with automatic calibration

Specifications

Measurement Pprinciple

  • Capacitive

Measuring Task

  • Point Level Measurement

Version

  • Rod Version
  • Rope Version
  • Version with Inactive Extension
  • Remote Version

Medium

  • Solids

Mounting Position

  • Top
  • Horizontal
  • Angled (In the Cone)
  • In Down Pipes
  • On a Socket

Ambient Temperature

  • -40° C to 70° C (-40° F to 158° F)

Process Temperature

  • -40° C to +500° C (-40° F to +932° F)

Process Pressure

  • -1 bar … +10 bar (-14.5 psi … +145 psi)

Minimum Sensitivity

  • DK ≥ 1.6

Housing Type

  • Standard
  • Flameproof
  • Increased Safety

Housing Material

  • Aluminum
  • Plastics (PA6)

Housing Protection Rating

  • IP67, NEMA Type 4X

Threaded Connection

  • ≥ G 1-1/4"
  • ≥ NPT 1-1/4"

Flange Connection

  • ≥ DN 100 / ≥ 2"

Wetted Materials

  • Stainless Steel 1.4301 (304)
  • Ceramic
  • Graphite
  • Stainless Steel 1.4305 (303)
  • Stainless Steel 1.4404 (316L)
  • Stainless Steel 1.4401 (316)

Mechanical Load

  • Rod: 525 Nm (Active Part: 20 Nm)
  • Rope: 10 kN

Minimum Immersion Length

  • Rod: 240 mm (9.5")
  • Rope: 490 mm (19.3")

Maximum Immersion Length

  • Rod: 2.44 m (8.01 ft)
  • Rope: 21.94 m (71.12 ft)

Power Supply

  • Universal Voltage: 21-230 Vdc/ Vac

Signal Output

  • Relay DPDT

Approvals

  • CE, General Purpose, ATEX, IEC-Ex, TR-CU, FM, FMc

Explosion Protection

  • Dust Ignition-proof (Ex t)
  • Explosion-proof/ Flame Proof (Ex d)
  • Increased Safety (Ex de)

User Interface

  • LCD Display with Push Buttons

Optical Indicator

  • LED + Display

Adjustment Possibility

  • Adjutable Sensitivity
  • Adjustable Output Delay
  • Adjustable Switching Point
  • Adjustable Hysteresis
  • Self Diagnostics

Applications

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

Documentation

Certificates