Find and compare marine and offshore pressure transmitters among 850 sensor families from 60 manufacturers. Enter your classification society, pressure range and environmental requirements to get a shortlist ranked by technical fit — not sponsorship.
Selecting a pressure transmitter for marine and offshore installations starts with classification society approval — and often ATEX or IECEx requirements alongside it. Many installations require type approval from one or more classification societies, confirming the device has been tested for suitability in the marine environment, including vibration, EMC, temperature cycling and ingress protection. The required society, housing materials and protection ratings depend on the vessel type, flag state and owner/operator specification.
With roots in Norway, DNV is one of the world's leading classification societies, with extensive coverage of ships, offshore units, LNG carriers and offshore energy projects.
Originating in the United States, the American Bureau of Shipping is a major international classification society with particular strength in marine and offshore assets, including the US offshore sector.
Lloyd's Register began in London and is one of the world's oldest classification societies, providing ship, marine equipment and offshore certification worldwide.
Founded in 1828 and headquartered in France, Bureau Veritas is a major international classification society active across commercial shipping, offshore assets and marine equipment certification.
Manufacturers may offer type approvals from several classification societies so the same product series can be used across different vessels, operators and projects. Verify which approval is required for the specific asset and project. Classification society approval covers the device type — not necessarily every configuration or variant. Verify the scope of the certificate against the selected device.
Marine and offshore environments expose pressure transmitters to conditions that are more demanding than most industrial installations. The key environmental factors are:
| Factor | What to consider |
|---|---|
| Salt atmosphere | Accelerated corrosion of housings, connectors and wetted parts. 316L stainless steel is commonly specified for marine environments; duplex stainless, Hastelloy or titanium may be required for high-chloride or more aggressive environments. Connector ingress protection is critical. |
| Vibration | Continuous vibration from engines, pumps and wave action. Verify vibration rating and consider remote diaphragm seal configurations for high-vibration locations. |
| Humidity and condensation | High ambient humidity and condensation on cold surfaces. Verify cable entry, connector sealing and ingress protection for the installation environment. |
| ATEX / IECEx | Many marine and offshore locations are classified hazardous areas. Verify whether ATEX or IECEx approval is also required in addition to classification society approval. |
| Subsea | Subsea pressure transmitters require specialist housings and connectors rated for the installation depth. Depending on the design, pressure compensation and qualification testing may be required. Verify depth rating, connector standard and qualification scope with the manufacturer. |
| Criterion | What to check |
|---|---|
| Classification approval | Confirm which classification societies are required. Verify that the certificate is current, covers the selected device configuration and is accepted for the vessel, asset and applicable project requirements. |
| ATEX / IECEx | Many offshore and marine locations require explosion protection in addition to classification approval. Verify zone classification and required protection concept. |
| Housing material | 316L stainless steel for general marine use. Duplex stainless for high-chloride environments. Hastelloy for aggressive process media or severe marine atmospheres. |
| IP rating | IP66 or IP67 is commonly specified for outdoor marine installations. IP67 or IP68 may be required for locations exposed to spray, washdown or temporary immersion. Connector ingress protection must match the transmitter rating. |
| Output signal | 4–20 mA 2-wire is most common for marine and offshore process measurement. HART for diagnostics and asset management. Verify loop power supply and cable run length. |
| Process connection | Flanged connections common for offshore process lines. G1/2 and NPT for general instrumentation. Flush diaphragm for viscous or fouling media. |
| Temperature range | Verify ambient and process temperature range. Arctic offshore applications may require −40 °C or lower. High-temperature process applications must be verified against the transmitter rating. |
Classification society approval and explosion protection approval are separate requirements. A DNV-approved transmitter is not automatically ATEX-certified. Many offshore installations require both. Verify the complete approval scope against the area classification drawing.
Standard industrial housings and connectors are often not rated for continuous salt atmosphere exposure. Verify that the housing material, surface treatment and connector sealing are suitable for the installation environment, not just the process media.
Classification society certificates are issued for a specific device type and configuration. A certificate for one variant does not automatically cover all variants of the same series. Verify the exact device configuration against the certificate scope before specifying.
Marine installations require attention to housing, connector and cable-gland materials, not only wetted parts. Salt atmosphere can attack external components even when the process media is compatible with the diaphragm and wetted materials. Verify housing material, surface treatment and connector sealing against the installation environment.
Verify before specifying: Always confirm the classification society approval, ATEX/IECEx requirements, housing material, IP rating, wetted materials and temperature range against the official certificates and manufacturer specifications. Pressure Selector provides a shortlist for further evaluation — it does not replace engineering review or certification assessment.
For promising matches, use Request Info on any result to prepare a supplier inquiry based on your application requirements.
Pressure Selector converts your application requirements — such as classification society approval (DNV, ABS, Lloyd's, Bureau Veritas), ATEX or IECEx certification, pressure range, output signal, housing material and IP rating — into a structured shortlist of matching pressure transmitters and sensors across established manufacturers.
Results are ranked by technical fit and link to manufacturer specifications for further verification. Coverage includes pressure transmitters and sensors with marine, offshore or classification-society approvals from manufacturers including Wika, Danfoss, Endress+Hauser, TE Connectivity, Ashcroft and others. Availability of specific classification society approvals and ATEX/IECEx combinations depends on the selected series and device configuration.