Airtac CMSE Magnetic Reed Sensor CMSE-050
The AirTAC Airtac CMSE Magnetic Reed Sensor CMSE-050 is a genuine CMS magnetic position switch. It senses the magnet ring in a pneumatic cylinder's piston and signals when the piston reaches that point, giving a 2-wire output on 5-240 V AC/DC with a 5 m flying lead. It only works on a cylinder that carries a piston magnet.
- TechnologyReed (magnetic contact)
- Output2-wire
- Supply voltage5-240 V AC/DC
- ProtectionIP64
- Profile (groove fit)E
- Lead / connector5 m flying lead
- VersionStandard
- RequiresMagnet-equipped cylinder
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac CMSE Magnetic Reed Sensor CMSE-050
The CMSE-050 is a reed-type magnetic position switch from AirTAC. Inside is a mechanical reed contact that closes when the piston magnet of a suitably equipped AirTAC cylinder passes it. It is a 2-wire switch that wires in series like a mechanical limit contact, works on 5-240 V AC or DC, and is sealed to IP64. A 5 m flying lead is built on, so you can land it on your control panel without a joint.
Because the contact is mechanical and fully isolated from the supply, this switch tolerates AC and DC alike with no polarity to observe. The E in the code is a fit code: it sets which cylinder groove or mounting band the body seats in, so check it against your cylinder before ordering. The cylinder must carry the built-in magnet option or the switch has nothing to detect.
Airtac CMSE Magnetic Reed Sensor CMSE-050 Technical Specifications
| Model | Airtac CMSE Magnetic Reed Sensor CMSE-050 |
|---|---|
| Family | CMS — Reed switch cylinder sensor |
| Technology | Reed (magnetic contact) |
| Output | 2-wire |
| Outputs in this family | 2-wire contact |
| Lead / connector | 5 m flying lead |
| Supply voltage | 5-240 V AC/DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | E (cylinder-groove fit) |
| Profiles in this family | E, G, H, J |
| Detects | Piston magnet ring inside the cylinder |
A reed contact switches a wide window, 5-240 V AC or DC, which is why it suits AC circuits and relay logic. IP64. The CMS range has no RW / IP68 option - that belongs to DMS and EMS. Switching distance, response time, current rating, voltage drop, LED behaviour, contact life, weight and dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
Model Code: Airtac CMSE Magnetic Reed Sensor CMSE-050
| CMS | Reed switch cylinder sensor — reed (magnetic contact). |
|---|---|
| E | Profile letter: the mounting / groove type that fits a particular cylinder body. This family offers E, G, H, J. It is a fit code, not a performance grade. |
| 050 | 5 m flying lead. 020 / 030 / 050 / 100 are 2 / 3 / 5 / 10 m flying leads; M08 and M12 are M8 / M12 connector versions. |
| (blank) | Standard version. On a CMS the suffix -H is the high-temperature version — do not confuse it with the H profile letter. |
We do not hold the full profile-to-cylinder-series table, so confirm the profile letter against your cylinder model before ordering — send us the cylinder part number and we will check the fit.
Which Family Do You Need?
- DMSElectronic, 2-wire / NPN / PNP, DC
- EMSMini electronic, 2-wire only, DC
- CMSReed contact, 2-wire, 5-240 V AC/DC
The split is electrical, not quality. Solid-state DMS and EMS are DC-only and suit modern PLC inputs; the reed-based CMS switches a much wider window, so it is the one for AC circuits, relay logic and older panels. The RW (IP68) option exists on DMS and EMS only.
| This switch | CMSE · 2-wire · 5-240 V AC/DC |
|---|---|
| Consider DMS | the solid-state range with NPN / PNP 3-wire outputs (DC only) |
| Consider EMS | the mini 2-wire solid-state switch (DC only) |
| Mounting parts | F-MQ (round body), F-ACT (tie-rod) |
Where the Airtac CMSE Magnetic Reed Sensor CMSE-050 Is Used
Conveyor end-stop signalling
Clipped to the groove of a magnet-fitted AirTAC cylinder that pushes cartons against a stop. The 5 m lead reaches the panel on a packaging line, and the reed contact closes a 24 V DC PLC input directly with no interposing relay.
AC-control cabinet interlock
On older machinery wired at 110 V AC, this switch reads cylinder position straight into the control circuit. Its 5-240 V AC/DC range means the same sensor suits both legacy AC panels and modern DC logic.
Gate and clamp confirmation
Mounted on tie-rod cylinders holding a guard gate or work clamp, the reed contact proves the piston has reached the clamped position before the machine cycle is allowed to continue.
Is the Airtac CMSE Magnetic Reed Sensor CMSE-050 the Right Switch?
Pick a CMS reed switch when your circuit is AC, mixed AC/DC, or you want the simplest possible hookup. A 2-wire reed contact behaves like a plain mechanical switch, so almost any PLC input, relay or lamp circuit accepts it. If your cabinet is DC-only and the duty cycle is very high, a solid-state DMS may outlast it - the reed contact has a finite life and can bounce on closure. Choose the 5 m lead here, step to 030 for short runs or 100 for distant cabinets, and confirm the E profile seats correctly in your cylinder groove.
Quick checklist
- ✓ Cylinder has a piston magnet
- ✓ Profile letter fits your cylinder groove
- ✓ Output matches the PLC input (2-wire)
- ✓ Supply rail is 5-240 V AC/DC
- ✓ Lead length or M8 / M12 connector
- ✓ High temperature? Use the -H version
Installation & Wiring Notes
- check The cylinder must carry a piston magnet — a plain cylinder cannot be sensed.
- check Slide the switch along the groove to the stop position, then lock it.
- check Keep the supply within 5-240 V AC/DC.
- check A reed contact suits AC or DC; observe the load limits on the datasheet.
- check Keep the lead clear of moving parts; use the RW type where it must flex.
- check Rated IP64 — protect it beyond that rating.
Use the F-MQ bracket on round-body cylinders and F-ACT on tie-rod cylinders where there is no groove to seat the switch. Both are ordered separately from the switch. Switching distance and mounting dimensions come from the factory datasheet — ask us for the sheet that matches your cylinder.
Airtac CMSE Magnetic Reed Sensor CMSE-050 FAQ
It is a reed (mechanical contact) magnetic position switch with a 2-wire connection, rated for 5-240 V AC or DC, protected to IP64, and fitted with a 5 m flying lead. Wiring is in series like a conventional limit switch, and the reed contact has no polarity, so either lead can go to either side of the circuit.
The profile letter defines the mounting fit - which groove or band position the body clips into - and it must match your cylinder series. AirTAC does not publish the E-to-series map in this datasheet extract, so confirm your cylinder model with us. The cylinder itself must have the built-in piston magnet option; a switch fitted to a plain cylinder will never signal.
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Related AirTAC Cylinder Sensors
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