Catalog excerpts
Fork-11 Tuning Fork Level Switch Catalog SHENZHEN JIWEI AUTOMATIONS LTD.
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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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www.jiweiauto.com 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 Types of the Medium Density Medium...
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www.jiweiauto.com Dimensional drawing SHENZHEN JIWEI AUTOMATIONS LTD.
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www.jiweiauto.com 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...
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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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