FS-A325L
Proximity Switch | Explosion Proof / Flameproof | High Temperature
ATEX Ex d/db/tb, IECEx Ex d/db/tb, UKEx Ex d/db/tb IIC / IIIC T3 / T4 / T6 SPCO/SPDT
Our FS series switches are able to sense ferrous material, such as carbon or stainless steel (17/4 or 400 series) at up to 2.5mm (0.1") and are reliable through millions of operations.
Properties
| Body Shape | Cylindrical |
| Body Material | 316L Stainless Steel |
| Contact Arrangement | SPCO / SPDT (Form C) |
| Contact Material | Palladium-Silver |
| Mounting Thread | M18x1.0 (60mm/2.36" Long) c/w 2 x locknuts |
| Connection | PEEK Leads |
| Conduit Entry | No Conduit Entry |
| Termination | Lead wires |
| Certification & Approvals | IECEx, ATEX, UKEx Ex d/db/tb |
| Hazardous Location | Zone 1, 2, 21 and 22 |
| Gas Group | IIC |
| Dust Group | IIIC |
| Temperature Class (T Rating) | T3 / T4 / T6 |
| Operating Temperature | -20°C to +175°C / -4°F to +347°F |
| Sensing Range with Magnet | <12mm (0.47") |
| Sensing Face Pressure Rating | 2000psi / 138 bar |
| Environmental Protection | IP 66, 67 & 68 (24hrs at 30m)/ NEMA 4X & 6P |
| Safety Rating | SIL 2 / SC3 |
| Repeatability | Approx. 0.05mm (0.002") |
| Response Time | 8 ms |
| Differential / Hysteresis | < 0.51mm (0.020") |





Sensing Ranges
Standard SensingFerrous Material = 2.5mm (0.10")Extended SensingOptional magnetic targets can be used to increase sensing range. |
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Dimensions
Connections
Supplied with 2m (79") of individual 18AWG PEEK lead wires. Custom lengths available on request
Certifications & Approvals
| Certification | Compliance | Certificate No. | |
|---|---|---|---|
| ATEX | EN IEC 60079-0: 2018, EN 60079-1: 2014, EN 60079-31: 2014 | Baseefa14ATEX0256X | |
| CCC-Ex / NEPSI (China) | GB/T 3836.1-2021, GB/T 3836.2-2021, GB/T 3836.31-2021 | 2020322304000801 | |
| IECEx | IEC 60079-0:2017, IEC 60079-1:2014-06, IEC 60079-31:2013 | IECExBAS14.0121X | |
| Safety Integrity Level (SIL) | IEC 61508:2010; SC3 ¦ SIL 2 with HFT=0 (1oo1) and SIL 3 with HFT =1 (1oo2) | FSP18015 | |
| UKEx | EN IEC 60079-0:2018 EN 60079-1:2014 EN 60079-31:2014 | BAS21UKEX0756X |