Airtac DMSJ Electronic Sensor DMSJ-P050
The AirTAC Airtac DMSJ Electronic Sensor DMSJ-P050 is a genuine DMS magnetic position switch. It senses the magnet ring in a pneumatic cylinder's piston and signals when the piston reaches that point, giving a pnp 3-wire output on 5-30 V DC with a 5 m flying lead. It only works on a cylinder that carries a piston magnet.
- TechnologyElectronic (solid-state)
- OutputPNP 3-wire
- Supply voltage5-30 V DC
- ProtectionIP64
- Profile (groove fit)J
- 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 DMSJ Electronic Sensor DMSJ-P050
AirTAC's DMSJ-P050 is an electronic (solid-state) magnetic position switch with a PNP 3-wire output and a generous 5 m flying lead. Mounted in the sensor groove of an AirTAC cylinder ordered with the piston magnet, it reports end-of-stroke to the controller, powered from a 5-30 V DC supply with an IP64 general-type body.
Five metres of lead is the choice for machines where the valves and PLC sit in a remote cabinet - long gantries, multi-zone palletising frames, or roof-mounted actuator sets - letting you run straight to the panel rather than splicing a shorter lead. Unlike a reed switch, whose mechanical contact has a finite life and can bounce, this solid-state unit switches cleanly over unlimited fast cycles, though it does demand the correct DC polarity and voltage, something an AC/DC reed does not care about. Verify that the J profile seats in your cylinder's groove; the switch also does nothing at all without a magnet in the piston.
Airtac DMSJ Electronic Sensor DMSJ-P050 Technical Specifications
| Model | Airtac DMSJ Electronic Sensor DMSJ-P050 |
|---|---|
| Family | DMS — Electronic cylinder switch |
| Technology | Electronic (solid-state) |
| Output | PNP 3-wire |
| Outputs in this family | 2-wire, NPN 3-wire or PNP 3-wire |
| Lead / connector | 5 m flying lead |
| Supply voltage | 5-30 V DC |
|---|---|
| Protection rating | IP64 |
| Version | Standard version |
| Profile letter | J (cylinder-groove fit) |
| Profiles in this family | E, G, H, J |
| Detects | Piston magnet ring inside the cylinder |
2-wire versions run 10-28 V DC; NPN / PNP 3-wire versions run 5-30 V DC. IP64 as standard. Order the RW version where coolant, washdown or constant cable flexing is present. 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 DMSJ Electronic Sensor DMSJ-P050
| DMS | Electronic cylinder switch — electronic (solid-state). |
|---|---|
| J | 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. |
| P | Output: PNP 3-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 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. |
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 | DMSJ · PNP 3-wire · 5-30 V DC |
|---|---|
| Consider EMS | the mini 2-wire electronic switch for tight installations |
| Consider CMS | the reed alternative for AC circuits and voltages up to 240 V |
| Mounting parts | F-MQ (round body), F-ACT (tie-rod) |
Where the Airtac DMSJ Electronic Sensor DMSJ-P050 Is Used
Palletising gantry axis feedback
On a palletiser gantry, grip cylinders sit several metres from the main cabinet; the DMSJ-P050's 5 m lead runs directly to the panel, giving the PLC a PNP confirmation of every grip and release.
Bolting station clamp verification
A multi-spindle bolting station interlocks its tools on clamp-closed signals; this switch on each clamp cylinder provides the sourcing feedback the cell controller needs before torque cycles start.
Lab press safety position
A laboratory test press reports ram top-of-stroke through this switch so the test software logs each cycle and blocks the next compression until the ram has fully retracted.
Is the Airtac DMSJ Electronic Sensor DMSJ-P050 the Right Switch?
Use the DMSJ-P050 where the switch-to-panel run is around 5 m and you prefer one continuous wire over connectors or junction boxes. Its PNP 3-wire output must pair with a sourcing-compatible PLC input; NPN cards take the N-version. Runs longer than 5 m are covered by a 10 m lead, and M8/M12 connector versions make later swap-outs plug-and-play. The general type is IP64 - select -RW if the switch will see washdown, oil mist, or a continuously flexing cable track, which raises protection to IP68. Profile J must match the cylinder groove; send us your cylinder series to confirm.
Quick checklist
- ✓ Cylinder has a piston magnet
- ✓ Profile letter fits your cylinder groove
- ✓ Output matches the PLC input (PNP 3-wire)
- ✓ Supply rail is 5-30 V DC
- ✓ Lead length or M8 / M12 connector
- ✓ Coolant or flexing? Use the RW 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 5-30 V DC.
- check Wire pnp 3-wire to match the PLC input's polarity.
- 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 DMSJ Electronic Sensor DMSJ-P050 FAQ
Electronic (solid-state) switch type; PNP 3-wire output; supply voltage 5-30 V DC; IP64 protection in the general type; wiring is a 5 m flying lead. It must be paired with a magnet-equipped AirTAC cylinder whose sensor groove matches the J profile.
Only if the piston contains a magnet - the switch senses the magnet, not the piston itself, so an unmagnetised cylinder gives no signal at all. The body must also seat in the cylinder's sensor groove. When ordering an AirTAC cylinder, add the magnet option and confirm the profile letter against the groove; we can check the fit from the datasheet.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Cylinder Sensors
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Send us the quantity, your cylinder model (so we can confirm the profile fit) and the destination. We confirm price, availability and lead time — usually within 7-8 hours.