Find and compare oil and gas pressure transmitters among 850 sensor families from 60 manufacturers. Enter your pressure range, hazardous-area approval and process requirements to get a shortlist ranked by technical fit — not sponsorship.
Selecting a pressure transmitter for oil and gas applications starts with the combination of explosion protection, material and functional safety requirements that apply to the installation. Hazardous-location approval, NACE MR0175 sour service compliance, SIL capability and the exact wetted materials all need to match the installation — the specific combination depends on the installation type, location and operator specification.
Typically required for European and international installations in classified hazardous areas. Many onshore oil and gas process areas are classified as Zone 1 or Zone 2, depending on the area classification. North American projects usually require FM, CSA, UL or cULus hazardous-location approval instead.
Material standard for equipment in H₂S-containing (sour service) environments. For sour service, wetted metallic materials must be selected and documented according to NACE MR0175 / ISO 15156 for the specific service conditions. Verify material grade, hardness, heat treatment and certificate scope for all applicable wetted metallic parts.
Safety Integrity Level assessment for use in safety instrumented systems (SIS). SIL 2 is commonly specified for emergency shutdown and process safety applications in oil and gas.
North American hazardous-location approvals for onshore oil and gas in the US and Canada. Class I Division 1 or Division 2, depending on the area classification. Some international projects specify both North American and ATEX/IECEx approvals, depending on asset location and operator requirements.
Hydrogen sulphide (H₂S) in process fluids causes sulphide stress cracking (SSC) in susceptible materials. NACE MR0175 / ISO 15156 defines the material requirements for wetted metallic components in sour service. For pressure transmitters, all wetted metallic components — including the diaphragm and process connection — must meet the applicable MR0175/ISO 15156 requirements. Seal and O-ring materials must be verified separately for chemical compatibility and service conditions.
Common NACE-compliant wetted materials include 316L stainless steel (within hardness limits), Hastelloy C276, Inconel and selected duplex stainless steels. 316L stainless steel may be acceptable in some sour service applications, but must be verified against the specific H₂S partial pressure, chloride content, pH and temperature. Always request material certifications (EN 10204 3.1 or 3.2) and verify compliance with the applicable NACE/ISO requirements.
| Criterion | What to check |
|---|---|
| Hazardous area approval | ATEX/IECEx for European and international installations. FM/CSA for North American onshore. Offshore installations may additionally require classification society approval (DNV, ABS, LR). |
| Sour service | If H₂S is present, verify NACE MR0175 / ISO 15156 compliance for all applicable wetted metallic parts. Seal and O-ring materials must be verified separately for chemical compatibility. Request material certificates. Verify hardness values against NACE requirements. |
| SIL capability | If the transmitter is used in a safety instrumented function, verify its SIL capability (SIL 1, SIL 2 or SIL 3) and required documentation (FMEDA, failure-rate data, safety manual, proof-test interval). The achievable SIL of the safety function depends on the complete SIF architecture and PFD calculation, not the transmitter alone. |
| Output signal | 4–20 mA 2-wire with HART is the dominant standard for oil and gas process measurement. Foundation Fieldbus and PROFIBUS PA are used in some facilities. Verify the control system compatibility. |
| Wetted materials | 316L stainless for standard service. Hastelloy C276 for aggressive or sour media. Verify compatibility with the specific process fluid, including H₂S concentration, CO₂, chlorides and temperature. |
| Process connection | Flanged connections common for process lines. G1/2 and NPT for instrument manifolds. Flush diaphragm for viscous crude or fouling media. |
| Ambient conditions | Onshore oil and gas sites can see extreme temperature ranges. Verify the ambient and process temperature specifications. Desert sites may require high-temperature versions; Arctic or deepwater sites require low-temperature ratings. |
ATEX approval for a sensor series does not automatically cover all variants. The protection concept, gas group, temperature class and device configuration must all match the installation. Always verify against the actual certificate, not just the product brochure.
316L stainless steel can be NACE MR0175-compliant within specific hardness limits, but not all 316L components meet these requirements. Request material certificates and verify hardness values, especially for castings and fittings.
If the transmitter is used in a safety instrumented function, verify its systematic capability, failure-rate data, safety manual and proof-test requirements. The achievable SIL depends on the complete SIF architecture and PFD calculation — not the transmitter alone. SIL-capable transmitters are typically supplied with FMEDA documentation and defined proof-test intervals; verify this documentation covers the intended architecture (1oo1, 1oo2 etc.).
The process diaphragm material is visible on the datasheet, but seals, O-rings and wetted fasteners may use different materials. Request the complete wetted materials declaration and verify against the process fluid composition.
Verify before specifying: Always confirm hazardous area approval, NACE compliance, SIL documentation, 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 ATEX/IECEx approval, NACE MR0175 compliance, SIL capability, pressure range, output signal, wetted materials and process connection — 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 for oil and gas applications from manufacturers including Yokogawa, ScanSense, Ashcroft, Wika, Althen, TE Connectivity and others. Availability of NACE compliance, SIL capability, specific ATEX variants and material certificates depends on the selected series and device configuration.