On April 29, 2026, the EU officially released the new industrial sensor electromagnetic compatibility standard EN IEC 62977-2:2026, clearly mandating its implementation from January 1, 2027. This standard newly adds radio-frequency conducted immunity test requirements for hydraulic and pneumatic industrial pressure sensors in the 0.15–80 MHz frequency band. Export products to Europe such as pressure transmitters and smart pressure sensors will be directly affected by this adjustment, and relevant manufacturers, export traders, and supply chain service providers need to reassess their compliance pathways, otherwise they may face risks such as customs clearance delays or blocked market access.

Event Overview

On April 29, 2026, the EU released standard EN IEC 62977-2:2026, replacing the previous version. This standard is one of the EMC series standards for electronic measuring equipment used in industrial process control. The core revision this time is the addition of mandatory test provisions for radio-frequency conducted immunity (RF Conducted Immunity) in the 0.15–80 MHz frequency band, with the applicable scope clearly directed at hydraulic/pneumatic industrial pressure sensors. The standard will enter the mandatory implementation stage on January 1, 2027, with the transition period ending on that date.

Which market segments will be affected

Direct trading companies: mainly refers to foreign trade companies and overseas brand operators engaged in exporting pressure transmitters and smart pressure sensors to Europe. Since CE marking certification must be based on the latest harmonized standards, companies that have not completed testing and updated technical documentation in accordance with EN IEC 62977-2:2026 will not be able to obtain a valid Declaration of Conformity, directly affecting the validity of customs declaration documents and eligibility for access to the EU market.

Processing and manufacturing enterprises: including domestic pressure sensor OEM/ODM manufacturers and production enterprises with independent export qualifications. If their products have already passed certification under the old standard version but do not cover the newly added 0.15–80 MHz conducted immunity item, they will need to undergo EMC laboratory testing again, rectify circuit design (such as filter layout and grounding optimization), and update type test reports, resulting in increased development cycles and certification costs.

Supply chain service enterprises: covering EMC testing institutions, certification agencies, technical regulatory consulting service providers, etc. This standard update will drive a new round of testing appointments and compliance consulting demand, especially creating business concentration for CNAS-accredited laboratories with IEC 61000-4-6 (radio-frequency conducted immunity) testing capability; at the same time, service institutions are required to update their standard interpretation databases and customer response guidelines in sync.

What key points should relevant enterprises or practitioners pay attention to, and how should they respond at present

Confirm whether the products fall within the scope of the new standard

Refer to the applicable provisions of EN IEC 62977-2:2026 and verify whether your export products belong to “hydraulic or pneumatic sensors for industrial process control based on piezoresistive/capacitive/resonant principles,” so as to avoid misjudgment leading to deviations in compliance investment; focus on signal output type (such as 4–20 mA, HART, IO-Link), power supply mode (two-wire/three-wire), and installation environment (whether it belongs to industrial electromagnetic severity Class A).

Review the status of existing certifications and the validity of test reports

Sort out the CE certificates obtained before April 29, 2026 and the EMC test reports they are based on, and confirm whether they cite EN IEC 62977-2:2021 or earlier versions; any reports that do not include measured data for conducted immunity in the 0.15–80 MHz frequency band (according to IEC 61000-4-6 Ed.4 or higher) must start supplementary testing or retesting arrangements in the fourth quarter of 2026.

Coordinate in advance with laboratories that have the corresponding testing capabilities

Confirm whether the cooperating testing institution has obtained CNAS accreditation for IEC 61000-4-6 Ed.4 and above, and can reproduce test conditions for the current injection method (CDN) or electromagnetic clamp method in the 0.15–80 MHz frequency band; avoid delays in testing schedules caused by gaps in laboratory capabilities, which could affect completion of the compliance closed loop before January 2027.

Update technical documentation and the Declaration of Conformity in sync

After completing supplementary testing, the EMC section in the product technical documentation must be revised to clearly cite the standard number EN IEC 62977-2:2026 and the corresponding test items; at the same time, update the list of standards and test basis in the EU Declaration of Conformity to ensure consistency with the actual reports and prevent the risk of document non-conformity during market surveillance inspections.

Editorial Viewpoint / Industry Observation

Observably, this standard update is not an isolated technical upgrade, but rather a continuing signal of the EU’s ongoing tightening of electromagnetic robustness requirements for industrial automation equipment. The newly added 0.15–80 MHz conducted immunity test essentially strengthens the evaluation of resistance to interference coupled through field wiring (such as conducted noise from nearby variable-frequency drives and switching power supplies), reflecting that the EU’s focus on real EMC risks in industrial scenarios is extending in depth from radiated emissions to conducted immunity.

Analysis shows, this standard is currently still in the “published, not yet mandatory” stage and does not yet constitute an immediate compliance obligation, but it has already formed a clear time anchor point (January 1, 2027). Its nature is closer to a deterministic policy signal rather than a sudden regulatory action——enterprises have an approximately 8-month window to carry out technical adaptation and process preparation, but the window is in effect narrowing as the mandatory date approaches.

From an industry perspective, what is currently more worthy of attention is the consistency between the pace of standard implementation and the enforcement details among member states. Although it is an EU harmonized standard, differences still exist in the discretion of market surveillance authorities in various member states regarding transition period grace periods and the key product categories selected for spot checks, so it is necessary to continuously track subsequent announcements in the EU Official Journal (OJEU) and updates to operational guidance from notified body.

Conclusion: The release of EN IEC 62977-2:2026 marks a further refinement of the compliance threshold for exporting industrial pressure sensors to Europe. It is neither a disruptive reconstruction of rules nor a minor technical adjustment that can be dealt with temporarily, but a mandatory technical specification with a clear effective date, quantifiable test requirements, and a direct impact on market access qualifications. At present, it is more appropriate to understand it as a compliance upgrade task that needs to be advanced according to a countdown schedule; its value lies not in triggering a sense of crisis, but in driving enterprises to move EMC design capability further upstream and make it routine.

Information source note: EU official standard release platform (CENELEC), IEC official standards database, and the text of standard EN IEC 62977-2:2026 (version dated April 29, 2026). Items pending continued observation: the enforcement approach of market surveillance authorities in EU member states toward the transition period for old certificates after January 1, 2027, as well as the review criteria of Notified Body regarding the correlation between supplementary test reports and complete-machine CE declarations.