Airtac CMSE Magnetic Reed Sensor CMSE-100
The AirTAC Airtac CMSE Magnetic Reed Sensor CMSE-100 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 10 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 / connector10 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-100
The CMSE-100 is an AirTAC reed position switch supplied with a 10 m flying lead - the longest lead option in the standard range. The magnetic reed contact is mechanical, polarity-free and switches 5-240 V AC or DC, sealed to IP64. It reports the position of a magnet-fitted AirTAC cylinder piston by closing its contact when the magnet arrives. Ten metres of lead means you can place the sensor on a cylinder at the far end of a machine or line and land the wires directly on a central control panel with no splice in between.
A long unshielded lead is also a design consideration: at 10 m the cable may pass power circuits and pick up noise, which is one reason the wide AC/DC reed format suits relay-level loads well. The E profile is a groove-fit code, so verify it seats in your cylinder body. No magnet in the piston means no signal, whatever the cable length.
Airtac CMSE Magnetic Reed Sensor CMSE-100 Technical Specifications
| Model | Airtac CMSE Magnetic Reed Sensor CMSE-100 |
|---|---|
| Family | CMS — Reed switch cylinder sensor |
| Technology | Reed (magnetic contact) |
| Output | 2-wire |
| Outputs in this family | 2-wire contact |
| Lead / connector | 10 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-100
| 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. |
| 100 | 10 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-100 Is Used
High-bay lifter position feedback
On a pallet-mast cylinder in a warehouse, the 10 m lead runs from the carriage down to ground-level controls, letting the reed contact signal top-of-stroke to a relay-based controller.
Long-line machine interlock
A transfer line tens of metres long uses these switches on clamp cylinders along its length, each 10 m lead landing on a single central panel - no junction boxes or cable extensions needed.
Remote gate on a water plant
A sluice or penstock actuator cylinder at the far end of a treatment plant reports open/closed position through the 10 m lead, switching a 230 V AC indicator lamp directly.
Is the Airtac CMSE Magnetic Reed Sensor CMSE-100 the Right Switch?
Take the CMSE-100 when the control cabinet is far from the cylinder and you would rather not joint or extend a shorter lead. A 10 m reed switch feeding a relay or lamp load is robust; if instead you drive a sensitive PLC input over that distance, weigh a solid-state DMS with 3-wire NPN or PNP output, whose clean switching gives a firmer signal than a bouncing reed contact. Any voltage from 5 V DC to 240 V AC is fine here. Confirm the E profile matches your cylinder groove and that the piston carries the magnet option.
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-100 FAQ
It is a reed position switch - a mechanical magnetic contact, not solid-state - with 2-wire connection and no polarity, rated 5-240 V AC or DC, IP64 sealed, and supplied on a 10 m flying lead. It wires in series exactly like a limit switch and its contact isolates the load circuit from the sensing side.
The lead length is purely a specification choice: 020, 030, 050 and 100 are the flying-lead options, while M8 or M12 connector versions suit cylinders you service often, because you can unplug instead of rewiring. Ten metres is for cylinders a long way from the panel. Whichever you choose, the switch only works if the profile E body seats in your cylinder groove and the piston has the magnet option.
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Related AirTAC Cylinder Sensors
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