Proximity Switch - Ferrous
IECEx & ATEX Intrinsically Safe Proximity Switches - FS-A Series
Certifications / Approvals
| Magnet Part No. | MA-1S | MA-2S | MA-3S | MA-4S | MA-7S |
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Documents to view/download
FS-A Series Overview
FS-A Series Proximity Switches (M18 Thread) are intrinsically safe, highly versatile solutions for hazardous environments and IECEx/ATEX/UKEx Exia. They support Gas/Dust Groups IIC and IIIC, and T4/T6 Ratings.
Designed with proven magnetic technology, these switches can detect ferrous materials up to 2.5mm (0.1") away, including carbon steel and stainless steel (17/4 or 400 series). The SPCO/SPDT (Form C) contacts are volt-free as standard. The outputs come in 2,3, 4-wire, NAMUR, and AS-Interface versions.
FS-A Series is certified for hazardous areas as follows.
| Explosion Proof: | IECEx & ATEX Exd (Zone 1 & Zone 21) |
| Intrinsically Safe: | IECEx & ATEX Exia (Zone 0 & Zone 20) ¦ UL/CSA IS (Zone 0) |
| Other Regional Approvals Include: | EAC/TRCU, INMETRO, KCs, CCOE/PESO, ECAS ex, NEPSI/CQST |
The FS-A series meets the requirements of IEC 61508:2010, Routes 1H and 1S, and has Systematic Capability (SC3). As a result, these proximity switches can be used in safety-related systems that perform safety functions up to and including SIL 2 (HFT=0, 1oo1) and SIL 3 (HFT=1, 1oo2), ensuring safe operation in hazardous and explosive environments.
- Body Shape
- Cylindrical
- Body Material
- 316L Stainless Steel
- Contact Arrangement
- SPCO / SPDT (Form C)
- Contact Material
- Palladium-Silver
- Max Current
- 4A
- Conduit Entry
- No Conduit Entry
- Temperature Class (T Rating)
- T3 / T4 / T6
- Operating Temperature Range
- -60°C to +204°C / -76°F to +400°F
- Sensing Face Pressure Rating
- 2000psi / 138 bar
- Environmental Protection
- IP 66, 67 & 68 (24hrs at 30m)/ NEMA 4X & 6P
- Safety Rating
- SIL 2 / SC3
- Actuation
- Ferrous Actuated (Magnet Optional)
- Mounting Thread
- M18x1.0 (60mm/2.36" Long) c/w 2 x locknuts
- Sensing Range with Magnet
- <12mm (0.47")
- Range (ferrous target)
- 2.5mm|0.10"
- Repeatability
- Approx. 0.05mm (0.002")
- Response Time
- 8 ms
- Differential / Hysteresis
- < 0.51mm (0.020")
All of our products are also available as Ordinary Location / General Industrial.
Please select your certification and protection concept for your specific requirement from the Part Number builder below
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