Capacitive sensor

RFnivo® - RF 8100

Application area

The capacitive level detector RFnivo® RF 8100 is used in storage and process vessels as a full, demand and empty detector in all liquids from a DK value of 1.5. It can generally be used at process temperatures up to +200°C and process overpressure up to 35 bar. Its “Active Shield” function ensures reliable functionality within applications with adhering material.

Technical Data

Measurement principleCapacitive
Measuring task
  • Point level measurement
  • Interface level measurement
Version
  • Rod version
  • Rope version
MediumLiquids
Mounting position
  • top
  • horizontal
  • angled (in the cone)
  • on a Socket
Ambient temperature-40°C … 85°C (-40°F … 185°F)
Process temperature-40°C … +200°C (-40°F … +392°F)
Process pressure-1 bar … +35 bar (-14.5 psi … +511 psi)
Minimum sensitivityDK ≥ 1.5
Housing typeflameproof
Housing materialAluminium
Housing protection ratingIP68, Type 4
Threaded connection
  • ≥ G 3/4″
  • ≥ R 3/4″
  • ≥ NPT 3/4″
Flange connection
  • ≥ DN25
  • ≥ 1″
Hygienic fittings
Wetted materials
  • Stainless steel 1.4404 (316L)
  • PEEK
  • FKM
  • FFKM
  • PFA
Mechanical loadrod: 15 Nm
Accuracy
Min. immersion length
  • rod: 455 mm (17.91″)
  • rope: 605 mm (23.82″)
Max. immersion length
  • rod: 1,4 m (4.71′)
  • rope: 25,4 m (83.4′)
Power supply
  • universal voltage (12…250V DC/ AC)
  • 12…30V DC
Signal output
  • Relay SPDT
  • Transistor
  • Profibus PA
Approvals
  • CE
  • General purpose
  • ATEX
  • INMETRO
  • FM
  • CSA
Explosion protection
  • Dust Ignitionproof (Ex t)
  • Intrinsic Safe (Ex i)
  • Explosionproof/ Flameproof (Ex d)
Hygienic / Pharma
Ship approvalLloyd’s
Overfill protectionWHG
SIL qualification
Further approvals
User Interface
  • DIP switches + potentiometer
  • LCD Display with push buttons
  • PACTware (DTM)
Optical indicatorLED + Display
Adjustment possibility
  • adjutable sensitivity
  • adjustable output delay
  • adjustable switching point
  • adjustable hysteresis
  • switchable logic (Fail Safe High – Fail Safe Low)