AirTAC Pneumatics
AirTAC CS1 Series Reed Switch Sensors
AirTAC CS1 is a reed-type magnetic position switch for magnet-fitted AirTAC cylinders - a mechanical contact output with no NPN or PNP choice, listed in 219 parts across 14 sub-families from about $10 to $34.
inventory_2219 models availableSeries Overview
The AirTAC CS1 series is a reed-type magnetic position switch. A reed switch senses the magnet in the cylinder piston and closes a mechanical contact - the contact is the output, so there is no transistor and no NPN or PNP decision to make. That is why the CS1 ordering code has no output-type position, while the electronic DS1 series does. CS1 is a switch, not a cylinder and not a valve: it adds end-of-stroke signalling to a magnet-fitted AirTAC cylinder.
AirtacDistr lists 219 live CS1 part numbers across 14 sub-families: CS1B (55 SKUs), CS1M (54), CS1MX (27), CS1MC (16), CS1A (11), CS1G (11), CS1E (9), CS1F (7), CS1J (5), CS1U (5), CS1JX (4), CS1T (4), CS1H (3) and 7 items listed simply as CS1. Prices run from about $10 to about $34 with a median around $21 - the cheap end of position sensing, which is the honest reason to pick a reed over an electronic sensor when the control circuit accepts a contact. Search tolerates both the compact form (CS1M020S06) and the dashed form (CS1-M-020-A-20) of the same parts.
The code positions - the 020/030/050/100 group, the S or A position and the trailing 2-digit number such as 06, 08, 10, 12, 16, 20, 25, 32, 40, 50 or 63 - are confirmed with us against your cylinder, and datasheet figures such as supply voltage, contact rating, cable length and protection class are confirmed per part number. Send your cylinder series, its bore and its groove or mounting style, and we return the exact CS1 code and the datasheet figures with your quotation.
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Typical Applications
Pick-and-place end-of-stroke confirmation
On a multi-axis gantry, a CS1 sensor on each magnet-fitted cylinder confirms the arm is fully extended or fully retracted before the next step fires. The two-wire contact drops straight into a relay or PLC input, so adding sensing at several positions stays a low-cost upgrade.
Conveyor stop and divert detection
Stopper and diverter cylinders on a pallet line need the controller to know the stop is actually up before the next pallet advances. A CS1 reed switch on the magnet-fitted stopper cylinder gives that confirmation as a simple contact, one sensor per position.
Packaging machine slide and clamp feedback
Carton sealers and wrapping machines run several short-stroke compact and mini cylinders per machine. At about $10 to $34 per sensor, CS1 reed switches keep per-position sensing cost low across a whole machine, with each sensor confirming its slide or clamp reached position.
Fixture clamp interlock
A machining or welding fixture will only cycle once its clamp cylinder has reached the clamped position. A CS1 sensor fitted to the magnet-fitted clamping cylinder feeds that signal to the safety or machine control circuit as a dry contact.
How to Choose the Right Model
Start with the output. If your control system specifies an NPN or PNP transistor output - most PLC input cards do - the answer is the electronic AirTAC DS1 series, not CS1. If the circuit accepts a dry mechanical contact, CS1 is the cheaper part. Second, check the cylinder: a position sensor reads the piston magnet, so the cylinder must be the magnet-fitted version. Some series cannot take a magnet at all - the steel-tube SGD, for example - and no position sensor will work on them.
Within CS1, pick the sub-family that matches your existing sensor code (CS1B, CS1M, CS1MX, CS1MC, CS1A, CS1G, CS1E, CS1F, CS1J, CS1U, CS1JX, CS1T or CS1H) and confirm the full code with us. The practical match to send: cylinder series, bore size, groove or mounting style, the code printed on your old sensor if you have one, and the lead or connector form you need. When a project needs a sensor family with full published specifications on paper today, the AirTAC CMS (reed), DMS and EMS (electronic) line is a separate series with documented data.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and available mounting space
- ✓ Port / thread type (PT / NPT / G)
- ✓ Sensor / magnet option (-S)?
- ✓ Side load — consider a guided model
Frequently Asked Questions
AirtacDistr lists 219 live CS1 part numbers in 14 sub-families, from CS1B and CS1M (the largest, at 55 and 54 SKUs) down to CS1H with 3. Prices run from about $10 to about $34, with a median around $21. Each code carries a 3-digit group (020, 030, 050, 100), an S or A position and a trailing 2-digit number (06 to 63) - send us your cylinder and we confirm what your code selects.
Every CS1 item is a reed-type sensor with a mechanical contact output - none offers NPN or PNP. The sub-families (CS1B, CS1M, CS1MX, CS1MC, CS1A, CS1G, CS1E, CS1F, CS1J, CS1U, CS1JX, CS1T, CS1H) differ in the details the code selects, such as lead and mounting form. Matching one to your cylinder is done by RFQ: send the cylinder series, bore and groove style, or the code off your old sensor, and we confirm the exact sub-family and part number.
The cylinder must have a piston magnet fitted - a non-magnetic cylinder cannot use any position sensor, and some series such as the steel-tube SGD cannot take a magnet. A reed and an electronic sensor are not freely interchangeable even when both fit the same groove: CS1 closes a mechanical contact, while the DS1 provides an NPN or PNP transistor output. If your PLC input card specifies NPN or PNP, choose DS1. We confirm CS1 fitment per cylinder by RFQ.
Yes - AirtacDistr is an authorized exporter of genuine AirTAC parts, and all 219 CS1 items are listed and orderable, with lead time confirmed on request. Figures such as supply voltage, contact rating, cable length and protection class are confirmed per part number from the AirTAC datasheet - send us the code and we return the datasheet with your quotation. If you need a sensor family with full published specifications on paper today, the CMS (reed), DMS and EMS (electronic) series is a separate AirTAC line with documented data.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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