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Vibrating Level Switch Catalog

Vibrating Level Switch Catalog
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Vibrating Level Switch Catalog SHENZHEN JIWEI AUTOMATIONS LTD.

Vibrating Level Switch Vibrating level switch is based on a cantilever beam vibrating principle. A cylindrical rod or a fork is used as a vibrating probe. Piezoelectric devices are utilized to drive and detect the vibration. With state-of-the-art techniques, the specifications of our vibrating level switch and its reliability reach to an advanced level in the field. When vibrating probe comes in contact with measured material, vibrating amplitude and frequency of the probe will substantially decrease, so does the output of detecting piezoelectric device. The amount of decrease is analyzed...

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Tube-11 Vibrating Rod Level switch Overview Tube-11 is the first made-in-China Vibrating Rod Level Switch that is designed with double vibrating elements, it is suitable for majority granular, powdery and fine-grained bulk solids, such as PVC, sodium hydroxide, lime, sand, soil, coal, dust, sugar, grain, bean, etc. The density of medium can be as low as 0.02g/cm³. It is highly reliable and with industry-leading performance and specifications. Jiwei has been granted 2 invention patents on Tube-11 vibrating rod level switch (patent number: ZL 201510009538.3 and ZL 201510059187.7) and one...

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Typical applications Silo with mixture of CaSO4 and CaSO3 resulting from semi-dry desulfurizing reaction at a coal power plant. ① The problem of medium buildup has been successfully solved due to a larger redundancy. ② The fluctuation of humidity results in an unstable dielectric constant of the mixture of CaSO4 and CaSO3, but Jiwei Tube-11 vibrating level switch could provide a reliable measurement in this situation because the measurement is independent of dielectric constant.  Environment friendly fuel tank in combustion system at power plant. The density of sawdust or straw is as low...

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Technical data Working environment Probe length When immersed When laid bare Maximum Power consumption Relay output Process pressure Power Supply Relay output Switching Delay Granular or powdery solids① Probe diameter Probe data Types of the medium Vibrating frequency Applicable medium Process temperature Regular: -50～150℃ High temperature: -50～250℃ Ultra-high temperature: -50～400℃ Overvoltage protection Min. cooling air flow rate Relay output Protection rating Cooling system data (for Ultra-high temperature only） Ambient temperature Storage and transport t t Air intake tube Explosion-proof...

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Dimensional drawing Shenzhen Jiwei Automations Ltd.

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Installation diagrams Notes:  For vertical installation, install level switch at a distance of d/6 from the vessel’s wall as shown in Fig.1.  For horizontal installation, mount Tube-11A approx.20°inclined to the vessel’s bottom to avoid medium buildup. To protect the probe from direct impact damage, a protection baffle should be installed above the vibrating body, and longer than intrusion depth (horizontal). Generally, protection baffle can be a convex shape (inverted “V” section) as in Fig.2 (a). If medium is coarse and abrasive, baffle in concave shape (erected “v” section) as in Fig.2...

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Order information N Non-explosion-proof I Gas Intrinsic Safety (Ex ia IIC T1～T6 Ga) D Gas Flameproof Enclosure (Ex d IIC T1～T6 Gb) M Dust Intrinsic Safety (Ex iaD 20 T85℃～450℃) E Dust Protection Enclosure (Ex tD A21 IP66 T80℃～440℃) F Gas/Dust Explosion-proof (Ex d IIC T6~T1 Gb+ Ex tD A21 IP66 T80℃~440℃) Process temperature Process fitting Thread G11/2''A Thread NPT 1½ '' Thread G1''A Thread NPT 1'' Flange DN50 PN40 ② Flange DN80 PN40 Flange DN50 PN16 Flange DN80 PN16 Customized External Housing/Ingress protection rating M N Cable entry Intruding depth Standard (168mm) Lengthened...

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Fork-11 Tuning Fork Level Switch Overview 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. Working principle 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...

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Typical applications 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. Technical data Fork data Switching Delay Power supply Maximum power consumption Applicable medium Types of...

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Dimensional drawing Shenzhen Jiwei Automations Ltd.

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Wiring plan Relay output ①：Power terminal ②③：Relay output (DPDT) Two-wire output ①：Power terminal /output (8/16mA) Installation diagrams Notes:  For horizontal installation, mount Fork-11 approx.20°inclined to the vessel’s bottom to avoid medium buildup as shown in Fig.1. To protect the probe from direct impact damage, a protection baffle should be installed above the vibrating body, and longer than intrusion depth (horizontal). Generally, protection baffle can be a convex shape (inverted “V” section) as in Fig.1 (a). If medium is coarse and abrasive, baffle in concave shape (erected “v”...

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In situation where medium is with higher density and bigger granular size, and medium fills in vertically downwards, it will impact the probe, to ensure the life time of instrument and reliable measurement, instrument should be mounted in a recess portion of the container shown as Fig.4(a) to protect the probe from impacting or being bent by filling materials, and “a” must be longer than the probe intrusion length. Order information Non-explosion-proof Intrinsic Safety(Ex ia IIC T1～T6 Ga) Flameproof Enclosure(Ex d IIC T1～T6 Gb) Process temperature Process fitting External Housing/Ingress...

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