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Compact Liquid Level Switch

Ring-21 Compact Liquid Level Switch

 High cost-effective, and with lightweight structure.
● With only 38 mm long of the fork body while the total length is only 160.5 mm, and the maximum diameter is about only 31.5 mm.
● Suitable to be installed in pipelines with constricted mounting space.
● The lowest measurable density is 0.7g/cm3.
● Suitable to use in foams, air bubbles, viscous liquid and conditions with complex vibrating interference.
● Design principles are based on detecting the change of the vibration frequency when fork body is covered by medium, which has high detection reliability.
● Simple operation, and strong versatility.

  • Ring-21 is an economical compact tuning fork liquid level switch. It is designed with a compact and lightweight structure, with only 38 mm long of the fork body while the total length is only 160.5 mm, and the maximum diameter is about only 31.5 mm. Ring-21 can be applied to the level measurement of vessels and storage tanks under difficult conditions. It is not only suitable to use in foams, air bubbles, viscous liquid and conditions with complex vibrating interference, but also particularly suitable to be installed in small containers and tanks with constricted mounting space. The design principles are also based on detecting the change of the vibration frequency when fork body is immersed in medium. Its lowest measurable density is 0.7g/cm3.

  • Ring-21 Compact Liquid Level Switch is designed based on detecting the change of the vibration frequency when fork body is covered by medium. The frequency of tuning fork will obviously decreases if it is covered by liquid. This change of vibration frequency directly reflect on the output signal of the piezoelectric detection device, thus, the detection circuit responds to the change of frequency and converts into a switching output signal.



  •  High cost-effective, and with lightweight structure.
    ● With only 38 mm long of the fork body while the total length is only 160.5 mm, and the maximum diameter is about only 31.5 mm.
    ● Suitable to be installed in pipelines with constricted mounting space.
    ● The lowest measurable density is 0.7g/cm3.
    ● Suitable to use in foams, air bubbles, viscous liquid and conditions with complex vibrating interference,
    ● Design principles are based on detecting the change of the vibration frequency when fork body is covered by medium, which has high detection reliability.
    ● Simple operation, and strong versatility.


  • Applicable materials

    Density

    0.7g/cm3

    Viscosity

    110000mPa.s= 1 \* GB3

    Flow velocity

    Max 6m/s

    Fork data

    Vibration frequency

    1100Hz

    Fork length

    40mm

    Accuracy

    Measurement

    ±1mm

    Delay

    3.0± 0.5mm

    Repeatability

    0.1mm

    Switching

    delay

    When immersed

    0.5S

    When laid bare

    1S

    Power

    Relay output

    85253V AC/1035V DC

    PNP

    1035VDC

    Power consumption

    AC<3.8mA/DC<825mW

    Ambient conditions

    Process pressure

    -140bar

    Process temperature

    -50150

    Ambient temperature

    -4070

    Storage and transport temperature

    -4080

    Electrical protections

    Relay output

    Category III, class I

    PNP

    Category III, class II

    Approvals

    Protection rating

    Pg 11: IP65

    M12*1: IP66/67

    Materials

    Connector

    Plastic PC

    Process fitting

    316L

    Round shell

    316L

    Process seal

    Klingersil C-4400

    Note: conditions of = 1 \* GB3 : The viscosity range with the density of 1.


  • ● Mainly applied in occasion that requires low-cost and economical instrumentation, and it is suitable for nonhazardous areas, particularly applicable to install in pipelines and tanks with constricted mounting space.



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