Dwyer CRF2-WR01T-048-M20 Series CRF2 Capacitive Level Transmitter Installation Guide
- June 10, 2024
- Dwyer
Table of Contents
Dwyer CRF2-WR01T-048-M20 Series CRF2 Capacitive Level Transmitter
The Series CRF2 Capacitive Level Transmitter provides a 2-wire 4-20 mA output to indicate level of liquids, powders and bulk materials. 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.
BENEFITS/FEATURES
- 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 custom 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
APPLICATIONS
- Pulp and paper processing
- Food and beverage
- Plastics
SPECIFICATIONS
- Service: Liquids, powders, and bulk materials compatible with wetted materials.
- Wetted Materials:
- Standard: Rod/cable: FEP,
- Connection: 316 SS;
- Ground option: Rod/cable and connection: 316 SS;
- Cable spacers: PVC;
- Flange option: Material of flange.
- Capacitance Range: 0 to 2000 pF.
- Sensitivity: 0.15 pF.
- Minimum Span: 8 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 Limits: Ambient: -40 to 185°F (-40 to 85°C); Process: -40 to 250°F (-40 to 121°C).
- Pressure Limit: 100 psi (6.9 bar).
- Power Requirements: 12-35 VDC.
- Output Signal: 4-20 mA or 20-4 mA, 2-wire.
- Response Time: 0.5 s.
- Electrical Connection: Screw terminal.
- Conduit Connection: 1/2˝ NPT female.
- Process Connection:
- Standard: 3/4˝ NPT male;
- Optional: See model chart.
- Enclosure Rating: NEMA 4X (IP66) weather tight/corrosion-resistant.
- Spark/Static Protection: 106 Ω dissipation resistance with a spark gap. Surge current to 100 A max.
- Calibration: Zero, span, 4 mA, 20 mA.
- Mounting Orientation: Vertical.
- Weight: 6´ rod type: 3.6 lb (1.63 kg).
DIMENSION
MODEL CHART
MODEL CHART
Example| CRF2| -W| R| 0| 1T| -048|
-M20| CRF2-WR01T-048- M20
Series| CRF2| | | | | | | Capacitive level transmitter
Enclosure| | W R| | | | | | WeatherproofRemote mount weatherproof
housing
Probe Type| | | R C| | | | | Rod Cable
Ground| | | | 0A
U
| | | | None includedAttached ground rod (3˝ or 4˝ flange process connection
types only) Unattached ground rod
Process Connection| | | | | 1T2T
3T
1B
2B
3B
1S
2S
3S
1F
2F
3F
4F
5F
6F
| | | 3/4˝ NPT male 1˝ NPT male1-1/2˝ NPT male 3/4˝ BSPT
1˝ BSPT
1-1/2˝ BSPT
1˝ sanitary clamp
1-1/2˝ sanitary clamp 2˝ sanitary clamp
2˝ 150# flange, 316 SS 2˝ 150# flange, PVC
3˝ 150# flange, 316 SS 3˝ 150# flange, PVC
4˝ 150# flange, 316 SS 4˝ 150# flange, PVC
Probe Length| | | | | | XXX| | Insertion length in inches. Example 048
is 48˝ length. Rod type min: 24˝, max: 144˝; Cable type min: 24˝, max: 360˝
Options| | | | | | | M20| M20 conduit connection with cable gland
Examples: CRF2-WR01T-072; CRF2-WR01T-096
DWYER INSTRUMENTS, LLC | dwyer-inst.com.