Airtac CMSH Reed Sensor CMSH-050
The AirTAC Airtac CMSH Reed Sensor CMSH-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)H
- Lead / connector5 m flying lead
- VersionStandard
- RequiresMagnet-equipped cylinder
About the Airtac CMSH Reed Sensor CMSH-050
This CMSH-050 reads the piston magnet of an AirTAC cylinder and closes a 2-wire reed contact. The mechanical element switches anything from 5-240 V, AC or DC alike, with no polarity to observe. A 5 m flying lead gives slack for routing along long frames; the general-type housing is sealed to IP64.
Five metres of lead covers long machine spans and cable trays - trim the excess to length and land it straight on the terminal block, with no connector to source. The H in the code is the mounting profile: it must match the groove on your cylinder body, so confirm the fit for your series with us before ordering.
Airtac CMSH Reed Sensor CMSH-050 Technical Specifications
| Model | Airtac CMSH Reed Sensor CMSH-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 | H (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 CMSH Reed Sensor CMSH-050
| CMS | Reed switch cylinder sensor — reed (magnetic contact). |
|---|---|
| H | 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 | CMSH · 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 CMSH Reed Sensor CMSH-050 Is Used
Conveyor gate position
A diverting gate cylinder on a long conveyor line reports open or closed; the 5 m lead reaches the panel without any splice.
Palletizer pusher proof
On a palletizer, the push cylinder must fully retract before the next layer lands; the switch feeds that proof straight to the controller.
Cable-tray routing
Along an elevated tray run, the extra five metres lets the switch stay on the far end of the machine while one drop feeds the panel.
Is the Airtac CMSH Reed Sensor CMSH-050 the Right Switch?
Decide between families by circuit first: a reed CMSH switches AC or DC in series with the load, while a DMS or EMS electronic switch is DC-only solid-state. If the run is long or the switch sits deep inside a frame, this 5 m flying lead saves a junction box; on machines serviced often, an M8 or M12 connector build unplugs faster. This is the general type; take -H if the spot runs hot. The H profile must match the groove of a magnet-equipped AirTAC cylinder.
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 CMSH Reed Sensor CMSH-050 FAQ
Reed-type position switch, 2-wire mechanical contact, 5-240 V AC/DC supply, IP64 housing, 5 m flying lead. No polarity to observe, and it works on AC or DC alike. For exact switching current and electrical life figures, confirm from the datasheet.
A flying lead is cut to length and landed directly on terminals, with nothing extra to buy or fail. An M8 or M12 connector build costs a little more but lets technicians unplug the switch during service. Whichever you choose, the H profile must fit the cylinder groove and the piston must carry the magnet.
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Standard models usually ship in 3-4 days.
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