Airtac DMSG Electronic Sensor DMSG-020
The AirTAC Airtac DMSG Electronic Sensor DMSG-020 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
- VersionStandard
- RequiresMagnet-equipped cylinder
About the Airtac DMSG Electronic Sensor DMSG-020
The DMSG-020 is an AirTAC DMS-series electronic position switch with a 2-wire solid-state output. It reads the piston magnet inside an AirTAC cylinder fitted with the magnet option and closes the loop just like a mechanical contact would - but with no moving parts to wear, stick or bounce. Supply voltage is 10-28 V DC, protection is IP64, and the wiring is a 2 m flying lead you can cut to length. The general-type body needs no special suffix.
A 2-wire switch wires in series with the load, which keeps panel wiring minimal - two conductors and done. The trade-off is a small leakage current through the circuit even when OFF, so verify your PLC input accepts it. Profile G is the fit code for the cylinder's sensor groove; confirm it against your cylinder series before ordering, and remember the switch is blind without a magnet-equipped piston.
Airtac DMSG Electronic Sensor DMSG-020 Technical Specifications
| Model | Airtac DMSG Electronic Sensor DMSG-020 |
|---|---|
| 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 | Standard version |
| 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
| 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. |
| (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 | 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 Is Used
End-of-stroke signals on pneumatic slides
Clipped into the groove of a magnet-equipped slide cylinder, the switch tells the controller the slide has fully retracted before the part-transfer sequence advances.
Stopper cylinders on a conveyor line
A 2 m flying lead reaches a nearby junction box, giving the line PLC confirmation that each stopper is up or down before product is released.
Clamp check on a welding fixture
The solid-state 2-wire loop proves the clamp cylinder is closed, interlocking the weld timer until both clamps report in - no extra PLC input card channels needed.
Is the Airtac DMSG Electronic Sensor DMSG-020 the Right Switch?
This is the straightforward choice: a 2-wire electronic switch on a 2 m lead for a DC circuit at 10-28 V. Choose it when simplicity beats signal purity - two wires into the loop, no NPN/PNP decision to make. If your PLC input is sensitive to leakage current or you need a dedicated signal wire, step up to a DMS 3-wire NPN or PNP model instead. Profile G must match the cylinder groove, the cylinder must have the magnet option, and for wet or oily zones pick the -RW IP68 version rather than this general IP64 type.
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 FAQ
It is a DMS electronic (solid-state) switch with a 2-wire output. Supply voltage is 10-28 V DC, protection is IP64 as the general type, and wiring is a 2 m flying lead. Profile G sets the fit to your cylinder's sensor groove - confirm the match to your cylinder series.
Both wire in series like a mechanical contact, but the DMS output is solid-state: no contact bounce, no mechanical wear, and faster cycling on DC circuits. A reed switch (the CMS family) uses a physical contact, accepts AC or DC over 5-240 V, and needs no polarity - a simpler but finite-life contact. Pick the DMSG-020 for long-life DC switching.
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Related AirTAC Cylinder Sensors
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