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Powder, Bulk or Liquids, No-Moving Parts, Excellent Chemical Resistance
CRF2系列电容式料位变送器是两线制4-20mA输出的能够监测液体，粉体和颗粒物料的料位。采用了先进的脉冲射频导纳技术，具有很高的测量精度和稳定性能。CRF2系列测量料位高度的原理是通过测量槽罐壁和变送器探头之间的电容的变化来导出它们之间的料位。对于非金属的槽罐或这槽罐的侧壁和探头不平行的场合，必须要有接地参考点。
CRF2系列料位变送器有固定杆式或挠性管缆式两种探头，用于不同的应用场合。零点和量程是直接按键校准。订购时可按需要定制探头的长度。聚全氟乙丙烯(FEP) 覆膜的探头耐腐蚀性能强。这种技术不会受到象手机，对讲机或其它无线发射装置等其它电磁信号的干扰。
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 To 35 VDC.
Output Signal: 4 To 20 MA Or 20 To 4 MA, 2 Wire.
Response Time: 0.5 Seconds.
Electrical Connection: Screw Terminal.
Conduit Connection: 1/2" NPT Female.
Process Connection: Standard: 3/4" NPT Male. Optional: See Catalog Page.
Enclosure Rating: NEMA 4X (IP66) Weather-Tight/Corrosion Resistant.
Spark/Static Protection: 106 Ohm Dissipation Resistance With Spark Gap. Surge Current To 100A Max.
Calibration: Zero, Span, 4 MA, 20 MA.
Mounting Orientation: Vertical.
Weight: 6 Ft Rod Type: 3.6 Lb (1.63 Kg).
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