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Cape-11A Standard RF Admittance Level Switch

 Excellent flexibility, widely used for the level measurement of fly ash, solid granules and adhesive materials.
 With an external dual color LED indicator and housing with electronics can be rotated during installation to make the orientation of LED indicator convenient for long distance observation.
 Modular design for high reliability, easy installation and maintenance.
 Passed third party reliability tests and received certifications from the third party, guaranteed extreme high reliability.
 Inexpensive with super quality, high cost-effective ratio. 
  • Cape-11A Standard RF Admittance Level Switch can measure capacitance as well as impedance between probe and vessel. It is suitable for dust and coal ashes level measurement. The probe is not susceptible to material buildup. It is flexible for various applications. Cape-11A is with modular design, easy for installation and maintenance. External LED light is ideal for long distance observation.


  • In Cape-11 RF Admittance Level Switch series products, a probe is designed to detect the change of capacitance and impedance between probe and vessel wall to fulfill material level measurement and control. In its electronic unit, reactance between measurement electrode and the wall of an empty vessel constitute a balanced bridge circuit which outputs a stable oscillation signal. As medium level rises, measured medium covers measurement electrode, reactance between electrode and the wall of vessel changes. It causes imbalance of bridge circuit and stops the oscillation as a result. A post-circuit is designed to detect the change of output signal from bridge circuit and generate an alarm signal. In addition, oscillation signal at radio frequency is not only applied to the measurement electrode but also applied to a shield pole through a 1: 1 voltage-follower, so measurement electrode and shield pole have the same electric potential, phase, and frequency, but these two electrodes are insulated from each other. Even if there is medium buildup on probe, because there is no electric potential difference between measurement electrode and shield pole, and the reactance change on shield pole has no effect on the detection of post-circuit. Therefore, only reactance change on measurement electrode induced by the filled medium between measurement electrode and the wall of vessel will be detected by post-circuit. It eliminates the effect of medium buildup on level measurement.


  •  Excellent flexibility, widely used for the level measurement of fly ash, solid granules and adhesive materials.
     With an external dual color LED indicator and housing with electronics can be rotated during installation to make the orientation of LED indicator convenient for long distance observation.
     Modular design for high reliability, easy installation and maintenance.
     Passed third party reliability tests and received certifications from the third party, guaranteed extreme high reliability.

     Inexpensive with super quality, high cost-effective ratio. 


  • Medium

    Medium Type

    Solid granules and adhesive materials

    Dielectric constant

    ≥1.6

    Probe data

    Probe length

    2502000mm

    Shield length

    90mm/240mm/300mm /590mm , can also be customized

    Diameter

    φ8mm/φ10mm

    Materials

    External housing

    Aluminum alloy

    Inner housing

    Plastic

    Probe metallic parts

    SUS304, 316L

    Probe insulation parts

    PTFE

    Power supply

    AC

    85264V AC

    DC

    1830V DC

    Power consumption

    ≤3W

    Switch delay

    When immersed

    1s

    When laid bare

    1s

    Signal output

    Relay

    DPDT, 8A/250V AC/30V DC

    Relay Delay

    030s continuous adjustable

    Operating conditions

    Process temperature

    -40250

    Ambient temperature

    -4070

    Storage and transport temperature

    -4080

    Approvals

    Protection rating

    IP66

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  • Cape-11A Standard RF Admittance Level Switch


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