SIST EN 837-3:1997
(Main)Pressure gauges - Part 3: Diaphragm and capsule pressure gauges - Dimensions, metrology, requirements and testing
General Information
- Abstract
This European Standard specifies requirements for diaphragm and capsule (designated by D and C respectively, see clause 12) indicating pressure gauges, vacuum gauges and combined vacuum and pressure gauges (compound gauges), from 50 to 250 nominal size with ranges up to 25 bar for the measurement of gauge pressure. A reading of zero bar is atmospheric pressure.
- Status
- Published
- Publication Date
- 31-Mar-1997
- Technical Committee
- IMIN - Measurement instruments
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Apr-1997
- Due Date
- 01-Apr-1997
- Completion Date
- 01-Apr-1997
Overview - EN 837-3:1996 (CEN)
EN 837-3:1996 is the European standard from CEN that defines dimensions, metrology, requirements and testing for diaphragm and capsule pressure gauges. It covers indicating diaphragm (D) and capsule (C) pressure gauges used as pressure gauges, vacuum gauges and combined vacuum-and-pressure (compound) gauges. The scope includes nominal sizes 50 to 250 and measurement ranges for gauge pressure up to 25 bar. In this standard a reading of zero bar corresponds to atmospheric pressure. (Designations D and C are defined in clause 12.)
Key topics and requirements
- Mechanical dimensions and marking: standardized face sizes and mounting/connection reference to ensure interchangeability and correct installation.
- Metrology and measurement performance: requirements for accuracy, calibration procedures and traceability to ensure reliable pressure indication and acceptable measurement uncertainty.
- Construction and materials: general requirements for diaphragms, capsules and wetted parts to ensure compatibility with measured media and durability under specified ranges.
- Testing and verification: prescribed tests to demonstrate conformity - for example performance checks, pressure cycling/overpressure and functional tests relevant to diaphragm and capsule designs.
- Types of gauges covered: vacuum gauges, gauge-pressure gauges and compound (vacuum + pressure) gauges - specifically those with diaphragm or capsule sensing elements.
- Designation and documentation: identification (D/C), range information and required technical documentation for end-users and regulators.
(Note: EN 837-3 focuses on diaphragm and capsule types; exact test methods and numerical tolerances are specified in the full standard document.)
Applications and who uses EN 837-3
This standard is intended for professionals who design, manufacture, specify, test or maintain pressure-measurement equipment:
- Instrument manufacturers producing diaphragm and capsule gauges
- Calibration and metrology laboratories performing verification and traceable calibration
- Plant and process engineers in industries such as HVAC, petrochemical, pharmaceutical, food processing, laboratories and gas distribution where low-pressure and vacuum measurement is needed
- Procurement and compliance teams who require standardized product specifications for safety and interoperability
EN 837-3 ensures reliable performance of diaphragm and capsule pressure gauges in applications up to 25 bar and across common nominal sizes.
Related standards
- EN 837 series (other parts) covering alternative pressure gauge types and broader selection/installation guidance - consult the EN 837 family for complementary requirements and installation practices.
Keywords: EN 837-3, pressure gauges, diaphragm pressure gauges, capsule pressure gauges, vacuum gauges, compound gauges, metrology, dimensions, testing, CEN.
Relations
- Effective Date
- 29-Jul-2026
- Effective Date
- 29-Jul-2026
- Effective Date
- 13-May-2026
- Effective Date
- 06-May-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
SIST EN 14334:2015 - LPG equipment and accessories - Inspection and testing of LPG road tankers - Effective Date
- 28-Jan-2026
- Referred By
SIST EN 764-7:2002 - Pressure equipment - Part 7: Safety systems for unfired pressure equipment - Effective Date
- 28-Jan-2026
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Frequently Asked Questions
SIST EN 837-3:1997 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Pressure gauges - Part 3: Diaphragm and capsule pressure gauges - Dimensions, metrology, requirements and testing". This standard covers: This European Standard specifies requirements for diaphragm and capsule (designated by D and C respectively, see clause 12) indicating pressure gauges, vacuum gauges and combined vacuum and pressure gauges (compound gauges), from 50 to 250 nominal size with ranges up to 25 bar for the measurement of gauge pressure. A reading of zero bar is atmospheric pressure.
This European Standard specifies requirements for diaphragm and capsule (designated by D and C respectively, see clause 12) indicating pressure gauges, vacuum gauges and combined vacuum and pressure gauges (compound gauges), from 50 to 250 nominal size with ranges up to 25 bar for the measurement of gauge pressure. A reading of zero bar is atmospheric pressure.
SIST EN 837-3:1997 is classified under the following ICS (International Classification for Standards) categories: 17.100 - Measurement of force, weight and pressure. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 837-3:1997 has the following relationships with other standards: It is inter standard links to SIST EN 13445-3:2026, SIST EN 13445-6:2026, SIST EN 13445-3:2021+A1:2026, SIST EN 16728:2026, SIST EN 16728:2016+A2:2020, SIST EN 1440:2016, SIST EN 13445-6:2021, SIST EN 13445-6:2009, SIST EN 1803:2002, SIST EN 13731:2008, SIST EN 17407:2020, SIST EN 13445-3:2009, SIST EN 12972:2018, SIST EN 14334:2015, SIST EN 764-7:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 837-3:1997 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-1997
Merila tlaka - 3. del: Merila tlaka z membrano in mehovi - Mere, meroslovje, zahteve
in preskušanje
Pressure gauges - Part 3: Diaphragm and capsule pressure gauges - Dimensions,
metrology, requirements and testing
Druckmessgeräte - Teil 3: Druckmessgeräte mit Platten- und Kapselfedern - Masse,
Messtechnik, Anforderungen und Prüfung
Manometres - Partie 3: Manometres a membrane et manometres a capsule -
Dimensions, métrologie, prescriptions et essais
Ta slovenski standard je istoveten z: EN 837-3:1996
ICS:
17.100 Merjenje sile, teže in tlaka Measurement of force,
weight and pressure
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...