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Dwyer

CRF2 Capacitive Level Transmitter

Powder, bulk or liquid level indicator with no moving parts and excellent chemical resistance

This product is no longer available. Contact us at 800-567-8686 for alternative solutions.

Have questions? We're here to help!
Have questions? We're here to help!

The Series CRF2 is a level transmitter providing a two-wire 4 - 20 mA output to indicate level of liquids, powders and bulk materials. State of the art sensing technology in the CRF2, using impulse RF admittance measurement provides excellent accuracy and stability. The CRF2 senses capacitance changes resulting from the height of the material in the tank between the probe and the tank wall. In non-metallic tanks or tanks that do not have the wall parallel to the probe a ground reference must be used.

The CRF2 comes with either a rigid or flexible probe depending on application installation need and probe length required. Featured in the CRF2 is easy push button calibration of zero and span. Custom order the CRF2 to any length probe that you need for your application. FEP covered probe is ideal for use with corrosive media. This technology also provides immunity to external RF sources like walkie-talkies and cell phones as well as minimal interference with radio communication or other electronic systems.

• State of the art sensing technology, uses impulse RF admittance measurement which provides excellent accuracy and stability
• Comes with either a rigid or flexible probe depending on application installation need and probe length required
• Easy push button calibration of zero and span
• Any length probe can be customer ordered for any specific application
• FEP covered probe is ideal for use with corrosive media
• Immune to external RF sources like walkie-talkies and cell phones as well as minimal interference with radio communication or other electronic systems

ServiceLiquids, powders, and bulk materials compatible with wetted materials
Wetted MaterialsStandard: rod/cable: FEP; connection: 316 SS.
Ground Option: rod/cable and connection: 316 SS; cable spacers: PVC.
Flange Option: material of flange
Capacitance Range0 pF - 2000 pF
Sensitivity0.15 pF
Minimum Span8 pF
Accuracy± 0.5 pF or ± 0.25% of span, whichever is greater
Repeatability± 0.25 pF or ± 0.1% of span, whichever is greater
Temperature LimitsAmbient: -40°F - 185°F (-40°C - 85°C);
Process: -40°F - 250°F (-40°C - 121°C)
Pressure Limits100 PSI (6.9 Bar)
Power Requirements12 VDC - 35 VDC
Output Signal4 - 20 mA or 20 - 4 mA, 2 wire
Response Time0.5 s
Electrical ConnectionScrew terminal
Conduit Connection1/2 in NPT female
Process ConnectionStandard: 3/4 in NPT male.
Optional: See Catalog page
Enclosure RatingNEMA 4X (IP66) weathertight/corrosion resistant
Spark/Static Protection106 Ω dissipation resistance with spark gap. Surge current to 100 A max
CalibrationZero, Span, 4 mA, 20 mA
Mounting OrientationVertical
Weight6 ft rod type: 3.6 lb (1.63 kg)
• Pulp and paper processing
• Food and beverage
• Plastics

  • Thumbnail of document Data Sheet - CRF2 Capacitive Level Transmitter
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    Data Sheet - CRF2 Capacitive Level Transmitter

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  • Thumbnail of document Brochure - CRF2 Capacitive Level Transmitter
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    Brochure - CRF2 Capacitive Level Transmitter

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  • Thumbnail of document Manual - CRF2 Capacitive Level Transmitter
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    Manual - CRF2 Capacitive Level Transmitter

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