SW-21 Compact Magnetic Switch
SW-21 has been approved for both Explosion-proof Certifications (Flameproof Enclosure: Ex d IIC T6 Gb and Intrinsic safety: Ex ia IIC T6 Ga). Jiwei holds a utility patent (NO. 201821348285.8) on SW-21.
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 both Explosion-proof Certifications (Flameproof Enclosure: Ex d IIC T6 Gb and Intrinsic safety: Ex ia IIC T6 Ga). It is designed with quality high power reed switch. Jiwei holds a utility patent (NO. 201821348285.8) on SW-21.
Same as SW-11 Magnetic Switch, SW-21 is also an ideal accessory when combined with Flap-11 Magnetic Level Indicator, so that the Magnetic Level Indicator can realize the remote alarm function. When the magnetic float in the buoy rises and falls by the changing of the liquid level, the permanent magnetic steel in magnetic float approaches the magnetic switch, and stimulates the switches to trigger the status of reed switch to change, and the on/off state of the reed is locked by the internal magnet and providing a signal to the control system to realize the liquid level control.
● Skillful configuration, compact and lightweight with delicate appearance (35mm in width and 120mm in length).
● Imported high quality and high-power reed switch as core component with longer service life.
● Chamber is made of 304 stainless steel to provide corrosion resistance and durability.
● Qualified with SIL2 / SIL3 Functional Safety Assessment, as well as certified for both Intrinsic Safety (Ex ia IIC T6 Ga) and Flameproof Enclosure (Ex d IIC T6 Gb) explosion protection.
● With high Ingress Protection rating IP66/67.
| Signal output | Switch signal (lockable) |
| Contact rating | 220V AC，1.0/2.0A |
| 24V DC，1.5/2.5A | |
| Process temperature | -50～150℃ |
| Ambient temperature | -40～70℃ |
| SIL Qualification | SIL2(HFT≥0)/SIL3(HFT≥1) |
| Explosion-Proof | Flameproof Enclosure: Ex d IIC T6 Gb |
| Intrinsic Safety: Ex ia IIC T6 Ga | |
| Ingress Protection | IP66/IP67 |
| Cable entry | M20×1.5 |
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.
