Welcome to the Shenzhen Jiwei Automations Ltd.

+86 755 28407683

Tuning Fork Level Switch

Fork-11 Tuning Fork Level Switch


 Reasonable design of tines and precisely adjusted of fork resonant frequency. The lowest measurable density can be as low as 0.008g/cm³.

 Particularly suits for level measurement of powdery, fine-grained bulk solids, can effectively avoid material buildup.

 Industry-leading performance for high temperature working environment, can tolerate process temperature up to 250℃.

 With CE certificates, gas and dust Flameproof Enclosure and Intrinsic Safety certificates.

 Made of strong corrosion resistant material 316L.


  • Fork-11 Tuning Fork Level Switch is specially designed for powdery and fine-grained bulk solids, such as sands, fine raw materials in chemical industry, flours, salts etc. The lowest measurable medium density can be as low as 0.008g/cm³. It makes Fork-11 the best level switch for ultra-low density mediums. Fork-11 has very high reliability. It has been applied extensively.


  • Fork-11 Tuning Fork Level Switch probe is based on a tuning fork harmonic resonance. It utilizes piezoelectric devices to drive the fork to vibrate and detect the changes of vibration. The fork vibrates in resonant frequency when it does not contact with medium. Once the fork comes in contact with medium, vibrating amplitude of the fork will decrease substantially. Output from the detecting piezoelectric device will decrease accordingly. An integrated circuit is designed to analyze the amount of decrease and output a switch signal. By reasonably increasing the area of tines and precisely adjusting harmonic resonance, Jiwei Fork-11 Tuning Fork Level Switch offers a very high sensitivity. Therefore, the lowest measurable density can be as low as 0.008g/cm³.


  •  Reasonable design of tines and precisely adjusted of fork resonant frequency. The lowest measurable density can be as low as 0.008g/cm³.

     Particularly suits for level measurement of powdery, fine-grained bulk solids, can effectively avoid material buildup.

     Industry-leading performance for high temperature working environment, can tolerate process temperature up to 250℃.

     Strong self-diagnostic function helps to accurately locate the fault.

     Easy installation and maintenance free.

     With CE certificates, gas and dust Flameproof Enclosure and Intrinsic Safety certificates.

     Made of strong corrosion resistant material 316L.


  • Applicable medium

    Types of the Medium

    powders or granular solids

    Density

    0.008g/cm³

    Medium size

    Max. 10mm

    Fork data

    Vibrating frequency

    140Hz

    Fork length

    150mm

    Switching Delay

    When immersed

    0.5s

    When laid bare

    1s

    Power supply

    Relay output

    20253VAC/2072VDC

    Two-wire

    1036V DC

    Maximum power consumption

    8VA (AC)1.5W (DC)

    Output

    Relay output

    DPDT, 5A/253V AC/24V DC

    Two-wire

    8/16mA, Alarm<2.3mA

    Working environment

    Process pressure

    -125bar

    Process temperature

    Regular: -50150

    High temperature: -50250

    Ambient temperature

    -4080

    Storage and transport temperature

    -4080

    Overvoltage protections

    Relay output

    Category III, class I

    Two-wire

    Category III, class II

    Approvals

    Protection rating

    IP66/IP67

    Explosion-proof types

    Flameproof Enclosure: Ex d IIC T6~T1 Gb, Intrinsic Safety: Ex ia IIC T6~T1 Ga

    CE

    LVD and EMC certificates

    Materials

    External Housing

    Aluminum Alloy

    Ground terminal

    316L

    Process fitting

    316L

    Fork body

    316L

    Process seal

    Klingersil C-4400

  •  Low density foam beads in the silo of a foam molding machine and a plastic forming machine.

     Zircon sand and petroleum coke.

     Other (ultra-low density) particles and powders.

     After spraying PTFE on fork body, it is especially suitable for fumed silica (SiO₂) level measurement. The density of fumed silica is as low as 0.01g/cm³, and the lowest detectable value of Fork-11 is 0.008g/cm³, which fully meets the measurement requirements of fumed silica working condition.




Online Service
Service Service Service Service
Scan the QR code to the mobile Web

x