Hydac HYDAC EDS 3000 (IO-Link)
HYDAC EDS 3000 electronic pressure switches with IO-Link interface, 4-digit display and pressure ranges from -1…1 bar up to 1,000 bar.
The EDS 3000 is HYDAC's series of electronic pressure switches with a digital display, with switching outputs and an IO-Link interface (code F31 in the type key), connected through a 4-pin M12x1 connector. The document presents two versions: EDS 33XX, with a ceramic cell, for absolute or gauge pressure up to 16 bar (replaced by the EDS 34XX series, so no repeat orders for EDS 33X6), and EDS 34XX, with a thin-film measuring element, for gauge pressure. For EDS 34XX, the measuring ranges are -1…1, 2.5, 6, 10, 16, 25, 40, 100, 250, 400, 600 and 1,000 bar (1,000 bar only with connection 4). The display has 4 digits with a red LED, and the protection rating is IP 67 with the connector fitted.
The code is read from the document key: in EDS 3446-F31-0250-000, 3 is the family, 4 the technology (thin-film, gauge pressure), 4 the G1/4 A mechanical connection (ISO 1179-2), 6 the M12x1 connector, F31 the IO-Link output, 0250 the 250 bar range, and 000 the standard version in bar (400 means standard in psi). For a quotation, please send us the full code or a photo of the nameplate; we check the code structure in the HYDAC document before issuing the quotation.
Models and codes
| Code | Note |
|---|---|
| EDS 3446-F31-0250-000 | code shown as an example in the HYDAC document: thin-film, G1/4 A connection, M12x1 connector, IO-Link output, 250 bar range, standard in bar. |
| EDS 3446-F31-0016-000 | example built from the type key (the 16 bar range is permitted with connection 4), not a code quoted in the documentation; its existence and availability are confirmed on the exact code. |
| EDS 34X6 | document key for thin-film, gauge pressure; X is the digit of the mechanical connection (1, 4, 7 or 9). |
| EDS 33X6 | version with ceramic cell, gauge or absolute, up to 16 bar; replaced by the EDS 34XX series, no repeat orders. |
Key specifications
| Interface | IO-Link (code F31 in the type key) |
|---|---|
| Electrical connector | M12x1, 4 poles (mating connector not included) |
| EDS 34XX ranges (bar) | -1…1; 2.5; 6; 10; 16; 25; 40; 100; 250; 400; 600; 1.000 bar |
| EDS 34XX mechanical connections | G1/2 B (EN 837, up to 40 bar), G1/4 A (ISO 1179-2), 9/16-18 UNF (SAE6, in psi), DIN 3852-G1/4 |
| Overload / burst pressure, 100 bar range | 200 / 500 bar |
| Supply voltage | 9 … 35 V DC (with PIN 2 = SP2); 18 … 35 V DC (with analogue output) |
| Display | 4 digits, LED, 7 segments, red |
| Protection rating | IP 67 (with mating connector fitted) |
The HYDAC "EDS 3000 IO-Link" instructions (Mat.-Nr. 669897, dated 14.07.2022) indicate the EDS 34XX series as the replacement for the EDS 33XX series, for which repeat orders can no longer be placed for type EDS 33X6. The document dates from 2022; the current status of the range is confirmed on the exact code, at quotation.
Frequently asked questions
What does "EDS 3446-F31-0250-000" mean?
EDS 3 is the family, 4 means thin-film with gauge pressure, the second 4 the G1/4 A connection, 6 the M12x1 connector, F31 the IO-Link output, 0250 the 250 bar range, and 000 the standard version in bar, according to the key in the document; the code appears as an example in the HYDAC document.
Can I still order an EDS 33X6?
The HYDAC document shows that the EDS 33XX series is replaced by the EDS 34XX series with the corresponding range, and repeat orders for the EDS 33X6 are no longer possible. For an older device you can send us the code, and we check the equivalent in the EDS 34XX series from the document.
What data should I send for a quotation?
The full code or a photo of the nameplate, the pressure range, the mechanical connection and the fluid. If the device does not have IO-Link (a different output code instead of F31), the code is checked in the documentation corresponding to that version.
Other Hydac series
The document covers the versions with an IO-Link interface; HYDAC pressure switches with other outputs or from other families have their own documentation, which we check for your code. Parameter settings, the IO-Link diagram and process data are read from the instructions.
Updated: 2026-11-12