Feature
● Skillful configuration, compact and lightweight with delicate appearance.
● Purchased high quality high-power reed switches with higher current rating and longer service time in international market.
● Made of 304 stainless steel to provide corrosion resistance and durability.
● Magnetic switch and remote transmitter have all passed SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety and Flameproof Enclosure explosion protection.
● With high Ingress protection level: IP66/IP67.
Overview
The compact and lightweight are the most prominent features of SW-21 Compact Magnetic Switch (with 35mm in width and 120mm in length). SW-21 has been approved for dual explosion-proof certifications (Flameproof Enclosure: Ex d IIC T6 and Intrinsic safety: Ex ia IIC T6). Jiwei holds a utility patent (NO. 201821348285.8) on SW-21. SW-21 is used with Flap-11 Magnetic Level Indicator for remote alarm as well. The magnetic float in the chamber rises or falls with the up and down of the liquid level in the vessel. When the magnetic float approaches the magnetic switch, the permanent magnetic steel in the magnetic float triggers the reed switch in SW-21 to change its open/close status. The state of the reed is locked by the internal magnetic mechanism to fulfill the alarm function.
Application
SW-21 is an ideal accessory when combines with Flap-11 Magnetic Level Indicator, so that the Magnetic Level Indicator can realize the remote alarm function.
Protection level : IP67, IP66
Other characteristics : compact, magnetic
Voltage : 24 V, 220 V

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