RF – Capacitance Level Switch
RF-Capacitance level switch is appropriate for application in liquid and solid mediums. Design and sensing electric unit makes it suitable for sticky media, large hoppers and storage bins. The switch is easily thread mounted an the tank and is highly reliable in operation.
RF-Capacitance level switch consists of a guard section, upper insulation, main probe and grounding. It consists of a conductive probe which serves as one of the capacitor plate, and the vessel wall which forms the other plate of capacitor since it is also prepared from a conductive material. The isolation between these two plates of capacitor is provided via an insulating process material having low dielectric constant. Now, for measurement purpose, an RF signal is applied between the two capacitor plates which cause a little flow of current from the conductive probe to the vessel wall via process material. The probe works as an antenna to sense the frequency. “When the level in the tank drops and the probe is exposed to the even less conductive vapours, the dielectric constant drops. This causes a drop in the capacitance reading and a minute drop in current flow. This change is detected by the level switch’s internal circuitry and translated into a change in the relay state of the level switch.
Liquids, syrups, solids, powder, cement, sugar, flour, power milk, rice, granules, chemical, etc.
Time delay function from 0-30 seconds.
IP 65 Protection.
Easy installation, durable, rugged
Suitable for sticky application, solids, powder
No moving parts
|1||Probe||SS, PTFE Insulated|
|2||Housing||Aluminium, Weather Proof|
|3||Operating Temperature||70 Deg. C / above 60(different model)|
|4||Supply||230 V AC|
|6||Safety.||FSL/FSH, switching points|
|7||Contact Rating||2 C/O SPDT, 5Amp.|
|8||Connection||11/2” BSP SS Male Thread|
|9||Cable Entry||1 Nos. Standard|
|10||Mounting||Screwed BSP Standard or Flanged(Optional)|
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