Capacitive sensor

RFnivo® - RF 3300

Application area

The capacitive point level sensor RFnivo® RF 3300 is used in storage and process vessels as a full, demand, and empty detector in all bulk solids from a DK value of 1.5. It operates at process temperatures up to +500°C and process overpressure up to 10 bar. Due to its “Active Shield” function any buildup does not in any way affect the accuracy of the measurement results of the sensor.

Technical Data

Measurement principleCapacitive
Measuring taskPoint level measurement
Version
  • Rod version
  • Rope version
  • Version with inactive extension
  • Remote version
MediumSolids
Mounting position
  • top
  • horizontal
  • angled (in the cone)
  • in down Pipes
  • on a Socket
Ambient temperature-40°C … 70°C (-40°F … 158°F)
Process temperature-40°C … +500°C (-40°F … +932°F)
Process pressure-1 bar … +10 bar (-14.5 psi … +145 psi)
Minimum sensitivityDK ≥ 1.6
Housing type
  • standard
  • flameproof
  • increased safety
Housing material
  • Aluminium
  • Plastics (PA6)
Housing protection ratingIP67, NEMA Type 4X
Threaded connection
  • ≥ G 1 1/4″
  • ≥ NPT 1 1/4″
Flange connection
  • ≥ DN100
  • ≥ 2″
Hygienic fittings
Wetted materials
  • Stainless steel 1.4301 (304)
  • Stainless steel 1.4305 (303)
  • Stainless steel 1.4404 (316L)
  • Stainless steel 1.4401 (316)
  • Ceramic
  • Graphite
Mechanical load
  • rod: 525 Nm (active part: 20 Nm)
  • rope: 10 kN
Accuracy
Min. immersion length
  • rod: 240 mm (9.5″)
  • rope: 490 mm (19.3″)
Max. immersion length
  • rod: 2,44 m (8.01′)
  • rope: 21,94 m (71.12′)
Power supplyuniversal voltage (21…230V DC/ AC)
Signal outputRelay DPDT
Approvals
  • CE
  • General purpose
  • ATEX
  • IEC-Ex
  • TR-CU
  • FM
  • FMc
Explosion protection
  • Dust Ignitionproof (Ex t)
  • Explosionproof/ Flameproof (Ex d)
  • Increased Safety (Ex de)
Hygienic / Pharma
Ship approval
Overfill protection
SIL qualification
Further approvals
User InterfaceLCD Display with push buttons
Optical indicatorLED + Display
Adjustment possibility
  • adjutable sensitivity
  • adjustable output delay
  • adjustable switching point
  • adjustable hysteresis
  • self diagnostics