Airtac DMSG Electronic Sensor DMSG-020-W
The AirTAC Airtac DMSG Electronic Sensor DMSG-020-W 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 2-wire output on 10-28 V DC with a 2 m flying lead. It only works on a cylinder that carries a piston magnet.
- TechnologyElectronic (solid-state)
- Output2-wire
- Supply voltage10-28 V DC
- ProtectionIP64
- Profile (groove fit)G
- Lead / connector2 m flying lead
- VersionW
- RequiresMagnet-equipped cylinder
About the Airtac DMSG Electronic Sensor DMSG-020-W
The DMSG-020-W is the DMSG-020 AirTAC DMS electronic position switch with a trailing -W special code. The base unit is a 2-wire solid-state sensor, rated 10-28 V DC and IP64, that clips into the sensor groove of a magnet-equipped AirTAC cylinder and reports piston position on a 2 m flying lead. What the -W suffix changes is a factory variant our data does not document - we will confirm its exact meaning from the datasheet on request, so do not assume it matches the documented -RW waterproof grade.
Treat the electrical core as proven and the suffix as an open question: the solid-state 2-wire loop wires in series with your load at 10-28 V DC, with the small leakage current typical of 2-wire electronics to check against your input. Profile G remains the cylinder-groove fit code - verify it against your cylinder series - and the piston magnet option is still required for anything to be detected.
Airtac DMSG Electronic Sensor DMSG-020-W Technical Specifications
| Model | Airtac DMSG Electronic Sensor DMSG-020-W |
|---|---|
| Family | DMS — Electronic cylinder switch |
| Technology | Electronic (solid-state) |
| Output | 2-wire |
| Outputs in this family | 2-wire, NPN 3-wire or PNP 3-wire |
| Lead / connector | 2 m flying lead |
| Supply voltage | 10-28 V DC |
|---|---|
| Protection rating | IP64 |
| Version | W - factory special code, confirm from datasheet |
| Profile letter | G (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 DMSG Electronic Sensor DMSG-020-W
| DMS | Electronic cylinder switch — electronic (solid-state). |
|---|---|
| G | 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. |
| (blank) | Output: 2-wire. Blank is 2-wire, N is NPN 3-wire, P is PNP 3-wire. |
| 020 | 2 m flying lead. 020 / 030 / 050 / 100 are 2 / 3 / 5 / 10 m flying leads; M08 and M12 are M8 / M12 connector versions. |
| W | W - factory special code, confirm from datasheet. |
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 | DMSG · 2-wire · 10-28 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 DMSG Electronic Sensor DMSG-020-W Is Used
Gate cylinders on an automated storage system
A 2 m lead reaches the distribution box at each aisle, feeding the warehouse controller a position signal for safety-gate interlocks on the shuttle route.
Retrofit onto legacy fixtures
Where a machine file lists the -W variant, matching the original part code keeps the retrofit identical to the installed base - we confirm the suffix from the datasheet.
Logged end-of-stroke on a test rig
The 2-wire loop feeds a data-acquisition channel, recording when the magnet-equipped test cylinder reaches each programmed stop during endurance trials.
Is the Airtac DMSG Electronic Sensor DMSG-020-W the Right Switch?
Order this model only if your build sheet or an existing installation specifies the -W variant explicitly. Otherwise the standard DMSG-020 (identical 2-wire, 10-28 V DC, 2 m lead, IP64) or the documented -RW version (IP68 waterproof, oil-resistant and flex-resistant for washdown zones) covers most needs - the -RW is the one with a confirmed protection upgrade. In every case the profile G letter must seat in your cylinder's sensor groove, and the cylinder must carry 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 10-28 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 10-28 V DC.
- check Wire 2-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 DMSG Electronic Sensor DMSG-020-W FAQ
Family DMS means an electronic solid-state switch; the output is 2-wire, supply voltage is 10-28 V DC, protection is IP64 (general type), and wiring is a 2 m flying lead. The -W suffix itself is a special code not covered by our data - we confirm its exact meaning from the datasheet on request.
We cannot say so. The documented -RW option raises a DMS or EMS switch to IP68 with waterproof, oil-resistant and flex-resistant construction. The -W code is separate and undocumented in our catalogue data, so its protection rating stays at the general IP64 until we verify the datasheet. Ask us before specifying it for a wet environment.
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