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For pharmaceutical manufacturers, cleanrooms and ATEX-rated hazardous zones present some of the most challenging operating environments in modern industry. To maintain strict ISO cleanliness classifications and prevent cross-contamination, access to these controlled zones is heavily restricted. At the same time, compressed air systems, process gas lines, and electrical switchgear running inside these environments must be monitored constantly, since even a small leak or electrical fault can compromise safety, product integrity, or energy efficiency. To address these challenges, facilities are turning to remote ultrasonic acoustic imaging as a way to inspect hazardous and hard-to-reach areas without physically entering them.

The Hidden Cost of Compressed Air and Gas Leaks

Compressed air and process gases such as nitrogen are essential utilities in pharmaceutical manufacturing, used for pneumatic controls, purging, and formulation processes. Leaks in these systems are notoriously difficult to detect with the human ear, especially in noisy production areas or elevated piping runs. Left undetected, they translate directly into wasted energy, unstable process conditions, and unplanned maintenance work. In ATEX zones, tracking down a leak by ear or by hand-held contact methods is not only inefficient, it can require shutting down equipment or donning heavy protective gear just to get close enough to investigate.

Electrical Anomalies and Partial Discharge

Electrical switchgear and connections operating in cleanroom and hazardous environments are also vulnerable to partial discharge, corona, and tracking, early warning signs of insulation breakdown that can eventually lead to equipment failure or fire risk. Because these anomalies emit distinctive ultrasonic signatures, they can be detected long before they become visible or audible to a technician standing nearby, provided the right tool is used at a safe distance.

Safe Remote Inspection with Acoustic Imaging

Setting up ladders or wearing heavy protective suits to inspect elevated piping or electrical switchgear is slow, labor-intensive, and introduces contamination risks to sterile cleanrooms. Using an ATEX-certified CRYSOUND acoustic camera, maintenance teams can conduct safe, non-contact remote inspections of both compressed air/gas systems and electrical assets.

These acoustic cameras use high-performance MEMS microphone arrays to convert ultrasonic sound waves into a color-coded visual "bloom" displayed on a real-time optical screen. This visual feedback allows technicians to locate and document compressed air leaks, nitrogen leaks, vacuum bypasses, or electrical partial discharge from a safe distance of up to 200 meters, completely eliminating the need to enter restricted zones, climb infrastructure, or interrupt active production.

Because inspections are non-contact and can be performed from outside the immediate hazard area, they also reduce the risk of introducing particulates or contamination into sterile cleanroom zones.

Conclusion

Maintaining energy efficiency and electrical safety in ATEX and cleanroom environments requires visibility into problems that are otherwise invisible and inaudible. By adopting remote ultrasonic acoustic imaging, pharmaceutical manufacturers can detect compressed air and gas leaks, identify electrical anomalies before they escalate, and protect both personnel and product, all without compromising cleanroom integrity or hazardous area safety.

www.sdtultrasound.com

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A device is installed in a hazardous area. The nameplate looks reassuring: Ex ia IIC T4. It has been assessed for intrinsic safety under IEC 60079-11, the loop parameters have been checked, and the equipment is suitable for the intended zone and gas group.

For many projects, this feels like the hazardous-area question is closed. But if the same device is part of a safety instrumented function under IEC 61508 or IEC 61511, another question remains: will it perform when the plant needs it most?

Explosion protection asks whether equipment can become an ignition source. Functional safety asks whether a safety function can achieve the required risk reduction. A device can be correctly Ex-certified and still need further evidence if it supports a shutdown function, protective loop or safety device.

This gap often appears late in a project. The ATEX or IECEx file may look complete. Then, during SIL review, HAZOP follow-up or commissioning, a new question appears: what is the probability that this safety function will fail when demanded?

Consider a 4–20 mA pressure transmitter that freezes at a normal value while the real pressure continues to rise, with nothing in the loop diagnosing the failure. Its Ex ia certificate remains valid. Yet if that transmitter protects against overpressure, this dangerous undetected failure could be the difference between a shutdown and an incident.

In functional safety, the failure that matters most is the one nobody sees coming: a dangerous failure that no diagnostic detects. This rate, λDU, is the driver of how often a safety function fails to act on demand. Alongside diagnostic coverage, safe failure fraction, hardware fault tolerance and proof-test interval, it determines whether the complete function meets its SIL target.

For this reason, two important standards have been published to address the challenges created when Ex equipment depends on a safety device or safety-related function. EN 50495 addresses safety devices required for safe functioning with respect to explosion risks. IEC TS 60079-42 brings this thinking into the IEC 60079 series for safety devices used to control potential ignition sources from Ex equipment.

These standards show why Ex evidence and functional safety evidence must speak to each other.

For manufacturers and integrators, the practical message is simple: do not treat Ex and functional safety as two separate files that meet only at the end. Align the evidence early by asking:

What is the safety function?
What SIL or risk reduction is required?
Which assumptions are made for diagnostics and proof testing?

Does the Ex assessment support the same operating limits as the functional safety case?
Are the proof-test assumptions consistent with how the equipment will actually be maintained?

This is the gap ExVeritas and NMi Group are addressing with the Functional Safety service: helping customers go one step beyond Ex certification and prove that the complete safety function can achieve the required risk reduction.

An Ex certificate remains essential. But the better question is no longer only: Is it Ex-certified?

It is: Can we prove the complete safety function?

www.exveritas.com

Navigating the confusion between refrigerant monitoring and leak detection

By Bryan Redmond, MSA Safety

The terms ‘refrigerant monitor’ and ‘refrigerant leak detector’ are frequently used interchangeably across the industry - yet they serve fundamentally different purposes. Bryan Redmond, a technical specialist at MSA Safety, unpacks the regulatory requirements and practical applications of each, offering guidance for operators navigating both safety compliance and sustainability goals.

In the modern HVAC-R landscape, ‘refrigerant monitor’ and ‘refrigerant leak detector’ are often used interchangeably - yet from a regulatory and operational standpoint, they serve fundamentally different purposes. Understanding this distinction is more than semantic precision; it's the difference between meeting life-safety compliance and achieving meaningful refrigerant emissions reduction.

Let's examine the why, when, and how of these two important systems.

Refrigerant monitors: the life-safety sentinel

Refrigerant monitors are often installed to achieve compliance with EN 378 and Regulation 573/2024 (F-Gas), which govern refrigeration systems and heat pumps. The core philosophy of EN 378 is straightforward: safeguard individuals from the harmful effects of refrigerant exposure, whether from toxicity or asphyxiation.

When and why are they required?

A refrigerant monitor - typically a diffusion-based point detector - is a mandated safety device for most HVAC/R applications in Europe. Monitoring is generally required under EN 378 when the volume of refrigerant that could potentially escape into a space is sufficient to pose a danger to occupants.

These devices are engineered for speed and reliability. Where applicable, EN 378 requires monitors to activate an audible and visual alarm within 30 seconds of detecting refrigerant gas at a concentration above a particular pre-set value. Other mitigation actions may also be activated by the alarm, such as mechanical ventilation or shutdown.  Units are typically pre-set to trigger at concentrations well below the occupational exposure limit of the particular refrigerant used (or for flammable refrigerants, well below 25% of the lower explosive limit (LEL)). For most refrigerants, alarm set points between 100 and 150 ppm fall well below harmful levels, providing crucial early warning to evacuate.

The maths of safety: is your room at risk?

Determining whether a specific room requires a monitor isn't guesswork, it's a calculation based on the "Practical Limit" of the refrigerant in use. For every individual room in a facility, the following assessment is performed:

If the resulting figure equals or exceeds the Practical Limit defined in EN 378, a refrigerant monitor is required under EN 378. Different refrigerants have different practical limits – R-410A, for example, has a Practical Limit of 0.44 kg/m³. If your system charge divided by the room volume exceeds this threshold, installation of a refrigerant monitor is mandatory.

Refrigerant leak detectors: high-sensitivity system oversight

If the refrigerant monitor exists to help keep occupants safe, an aspirated refrigerant leak detector is designed for high-sensitivity, ongoing system oversight.

Aspirated systems typically use a centralised Non-Dispersive Infrared (NDIR) sensor to actively draw air samples from various locations. Unlike diffusion-based monitors which typically alarm at 100ppm or more, these systems are engineered with a Minimum Detection Level (MDL) of 1 ppm.

Why low-level detection matters

Why detect at 1 ppm when the safety alarm doesn't trigger until 100 ppm? The answer lies in cumulative refrigerant loss.

Standard refrigerant monitors cannot always detect small leaks- that's not their purpose. However, a system can sustain a persistent, minor leak that loses hundreds of kilograms of refrigerant annually without ever reaching the 100–150 ppm threshold at the monitor's location. This is particularly true in large rooms or spaces with high air-change rates.

By the time a refrigerant monitor alarms, the leak is already significant. When an aspirated leak detector alarms, the issue remains a manageable maintenance task. Detecting these small leaks enables prompt repairs, drastically reducing refrigerant replacement costs and helping facilities meet their Environmental, Social, and Governance (ESG) targets.

It's worth noting that the majority of refrigerant loss occurs through undetected small leaks - not catastrophic blowouts that would trigger safety alarms.

The critical difference: why not use one system for both?

This is the question I encounter most frequently: If an aspirated detector is so sensitive, why can't I use it for my EN 378 safety compliance?

The answer comes down to cycle time.

The 30-second rule under EN 378

Because aspirated systems must sequentially sample each zone - drawing air through tubing, analysing it, and purging the sensor before moving to the next location- a cycle time is introduced. Depending on the number of zones and total tubing length, it could take up to 90 minutes for a 16-zone unit with maximum line lengths of 300 metres to return to any given location.

While this timeline is appropriate for identifying slow-developing leaks and reducing long-term emissions, it is unsuitable for life safety. If a sudden, large-scale leak fills a room with refrigerant, you cannot wait for an aspirated detector to cycle back to that location.

Under EN 378, refrigerant monitors must be installed in any space where the practical limit could be reached or exceeded. These devices must alarm within 30 seconds of detecting a pre-set concentration of refrigerant. Aspirated systems - regardless of their sensitivity - cannot fulfil this mandatory rapid-response role.

Conclusion - a multi-layered approach

The choice between a refrigerant monitor and an aspirated leak detector is not an either/or proposition - it's a both/and strategy for effective facility management.

Refrigerant monitors are non-negotiable where EN 378’s “Practical Limit” is reached. They are the silent sentinels helping to prevent mechanical failure from becoming a human tragedy. However, relying solely on refrigerant monitors means accepting the hidden cost of slow, undetected leaks that drain budgets and may harm the environment.

By implementing aspirated refrigerant leak detection alongside required refrigerant monitors, operators can achieve both objectives: a compliant, safe environment for occupants and a higher-efficiency, lower-emission refrigeration system that delivers measurable returns through reduced refrigerant costs.

In a market increasingly defined by stringent environmental regulations and rising refrigerant costs, understanding this distinction has become a business imperative.

with appropriately specified refrigerant monitors, then consider where aspirated leak detection can deliver additional value through early identification of minor leaks.

The investment in both technologies pays dividends - not only in regulatory peace of mind, but in reduced refrigerant costs, lower emissions, a stronger position as sustainability reporting requirements continue to evolve, and perhaps most important, in improving safety.

Discover how MSA Safety can help you combine life-safety monitoring with high-sensitivity leak detection to support safer, more efficient and lower-emission operations.

EEMUA is pleased to announce that EDF’s Nuclear Operations Business Unit has joined the Association as a Corporate Member, forming a joint membership with existing member EDF Power Solutions. This expansion brings the full scope of EDF’s low carbon generation activities in the UK and Ireland (spanning nuclear, renewable, storage and emerging hydrogen technologies) into closer engagement with EEMUA’s cross industry community.

EDF manages the UK's nuclear power plant sites. Its remit includes the safe and reliable operation of nuclear assets, decommissioning activities, and the delivery of major new build projects. The organisation plays a central role in maintaining energy security and supporting the UK’s transition to net zero.

EDF Power Solutions has been an active participant in EEMUA for several years, contributing through its portfolio of onshore and offshore wind farms, solar installations, battery storage sites and green hydrogen projects.

EEMUA Chief Executive, Stefan Kukula, said: “It is great news that EDF’s Nuclear Operations Business has decided to join EEMUA alongside EDF Power Solutions. Our members span many different specialties and markets but have common interests in safety and asset integrity, while maintaining operational efficiency. I know that they will seize the opportunity to share good practice and learnings across technologies and sectors and look forward to meeting their staff at our events.”

http://www.eemua.org/

The International Electrotechnical Commission (IEC) has officially published IEC 60079-0:2026 Edition 8, introducing the latest revision of the core international standard governing the design, construction, testing and marking of equipment intended for use in explosive atmospheres.

The publication of IEC 60079-0:2026 Edition 8 marks an important milestone for manufacturers, certification bodies and end users operating in hazardous environments.

As the cornerstone standard covering the general requirements for equipment intended for use in explosive atmospheres, IEC 60079-0 underpins many of the protection concepts used across ATEX and IECEx certified equipment. The release of Edition 8 introduces a number of technical revisions designed to improve clarity, consistency and safety throughout the equipment lifecycle.

While many of the changes are aimed at equipment manufacturers and certification organisations, there are also important implications for operators, maintenance teams and hazardous area professionals responsible for selecting, installing and maintaining Ex equipment.

What does this mean for users?

One of the key changes in Edition 8 is an increased emphasis on ensuring that equipment markings, documentation and specified conditions of use are fully understood and followed throughout the equipment's operational life.

For end users, this reinforces the importance of:

• Verifying equipment markings before installation.
• Following all manufacturer instructions and special conditions of use.
• Ensuring maintenance personnel are familiar with the latest documentation.
• Reviewing existing equipment management procedures to ensure continued compliance.

Although existing certified equipment remains valid under the terms of its certification, organisations planning new projects or equipment upgrades should be aware that newly certified products will increasingly reference IEC 60079-0:2026 Edition 8.

Supporting safer hazardous area operations

The updated standard forms part of the ongoing development of the IEC 60079 series, helping to ensure that explosion-protected equipment continues to meet the evolving needs of modern industrial facilities.

For manufacturers, the new edition provides updated technical requirements for product design, testing and certification. For users, it serves as a timely reminder that correct equipment selection, installation and maintenance remain fundamental to maintaining safety and compliance within hazardous locations.

Companies operating in sectors such as oil & gas, chemical processing, pharmaceuticals, hydrogen, energy, mining and manufacturing should familiarise themselves with the latest edition and consult their certification partners where appropriate when specifying new Ex equipment.

As manufacturers begin introducing products certified to IEC 60079-0:2026 Edition 8, hazardous area professionals can expect to see the new standard referenced more frequently across technical documentation and certification records.

Tags:

• IEC 60079
• IEC 60079-0
• IECEx
• ATEX
• Explosion Protection
• Hazardous Areas
• Ex Equipment
• Process Safety
• Industrial Safety
• Standards
• Compliance

The British Safety Industry Federation (BSIF), through its Respiratory Protection Group, has relaunched the ‘Clean Air? Take Care!’ campaign, supported by a comprehensive range of online guidance resources designed to help employers and wearers understand and address the key considerations of respiratory protection in the workplace.

The accompanying campaign concertina leaflet has been developed to reinforce essential respiratory health and safety messages across UK workplaces. Designed for both employers and respiratory protective equipment (RPE) wearers, it provides a concise and accessible reminder of the principles that support effective respiratory protection.

Developed as a practical awareness resource for employers, health and safety professionals, supervisors and workers, the leaflet presents key information in a simple, accessible format while providing direct access to more detailed guidance through QR codes on every page.

The refreshed publication aims to support organisations in tackling one of the UK's most significant occupational health challenges. Despite increased awareness of workplace health risks, work-related respiratory disease remains a major cause of ill health and death, with thousands of workers affected every year.

The campaign  highlights a range of key topics, including:

•           Recognising invisible airborne hazards

•           Controlling exposure at source through ventilation and extraction

•           Understanding legal responsibilities

•           Selecting appropriate respiratory protective equipment (RPE)

•           The importance of face fit testing

•           Training users in correct wear and use

•           Maintaining equipment effectively

•           Purchasing products from trusted suppliers

Each section is supported by a dedicated QR code, enabling readers to access further information, guidance and practical resources relevant to the topic being discussed. This approach allows the leaflet to communicate the key messages clearly and concisely while providing a pathway to more in-depth learning.

Commenting on the launch, BSIF CEO, John Hooker said:"We are proud to relaunch the ‘Clean Air? Take Care!’ campaign with updated emphasis on the entire area of Respiratory Protection making the key messages clearer and more accessible than ever. Work-related respiratory disease remains a major source of occupational ill health, and we must continue to work together to keep the risks and the controls firmly front of mind.

"A common misconception is that respiratory protection is simply a matter of handing someone a mask. Effective protection depends on much more, including selecting the right product for the hazard, ensuring it fits the wearer correctly through face fit testing, providing appropriate training, and maintaining equipment throughout its life. Just as importantly, organisations should ensure they purchase products from trusted suppliers, as substandard or unsuitable products can leave workers exposed to significant risks."

The refreshed ‘Clean Air? Take Care!’  campaign forms part of the BSIF Respiratory Protection Group's ongoing commitment to raising awareness of respiratory hazards and promoting best practice in the selection, use and maintenance of respiratory protective equipment.

Access the full suite of CATC resources here: https://bsif.co.uk/campaigns-projects/clean-air-take-care/

 EXAIR's Dual Hazardous Location Cabinet Cooler® Systems provide a powerful, maintenance-free solution for protecting large electrical enclosures in hazardous environments. Designed for classified areas, including Class I Div 1, Groups A, B, C, and D; Class II Div 1, Groups E, F, and G; and Class III, these high-capacity cooling systems prevent overheating of sensitive electronics while eliminating the need for costly air conditioners or vortex fans. With cooling capacities up to 5,600 Btu/Hr, Dual Hazardous Location Cabinet Coolers are ideal for oversized control panels, motor control centers, and other electrical enclosures exposed to explosive gas or combustible dust atmospheres.

Dual Hazardous Location Cabinet Cooler Systems use two engineered Cabinet Coolers working together to evenly distribute cold air throughout large enclosures, maintaining safe operating temperatures for critical electrical components. The systems are UL tested for hazardous locations and preserve the enclosure's integrity by mounting through standard electrical knockouts. Each system includes an automatic drain filter separator to prevent moisture from entering the enclosure, while optional electronic temperature controls are also available. With no moving parts to wear out and no refrigerants to maintain, the systems provide long-lasting, reliable protection in the harshest industrial environments.

Dual Hazardous Location Cabinet Cooler Systems are part of EXAIR's complete family of Cabinet Cooler® Systems, offering solutions for NEMA 12, 4, 4X, and ATEX-rated enclosures ranging from 1,000 to 5,600 Btu/Hr. Whether cooling a small control panel or a large electrical enclosure in a classified area, EXAIR provides engineered cooling solutions for virtually any enclosure cooling challenge. https://exair.co/190-hazdual

Updated: June 2026
This article reflects the publication of IECEx 02 Edition 9.0, released on 25 March 2026.

The IECEx System has introduced Edition 9.0 of its Certified Equipment Scheme Rules of Procedure, bringing several important updates for manufacturers, certification bodies and organisations involved in the design and supply of equipment for explosive atmospheres. While the fundamental principles of IECEx certification remain unchanged, the latest edition reflects the continued evolution of international standards and certification processes.

As industries such as hydrogen, battery energy storage, oil & gas, chemicals and pharmaceuticals continue to expand, demand for internationally recognised hazardous area certification continues to grow. The publication of IECEx 02 Edition 9.0 demonstrates the scheme's ongoing commitment to maintaining globally harmonised certification procedures while supporting technological advances and regulatory developments.

What is IECEx?

The IECEx System is the International Electrotechnical Commission's conformity assessment system for equipment and services used in explosive atmospheres.

Unlike ATEX, which is a legal requirement within the European Union, IECEx is an international certification scheme recognised by many countries around the world. It provides confidence that equipment has been independently assessed against the internationally accepted IEC 60079 standards.

Today, IECEx certification is widely used throughout:

• Oil & Gas
• Chemical Processing
• Hydrogen Production
• LNG Facilities
• Mining
• Pharmaceutical Manufacturing
• Offshore Installations
• Energy Generation
• Industrial Manufacturing

For companies exporting equipment internationally, IECEx certification can significantly simplify market access.

What's New in Edition 9.0?

The publication of IECEx 02 Edition 9.0 represents the latest revision of the Rules of Procedure governing the IECEx Certified Equipment Scheme.

The updated edition introduces refinements aimed at improving consistency across certification bodies, strengthening governance arrangements and reflecting changes introduced through revised IEC standards.

Among the key areas addressed are:

• Improved certification procedures
• Updated administrative requirements
• Enhanced document management
• Greater harmonisation between participating certification bodies
• Clarification of responsibilities throughout the certification process

Although many of the changes are procedural rather than technical, they help maintain the credibility and international recognition of IECEx certification.

Why Does It Matter?

For manufacturers, compliance with the latest IECEx procedures helps ensure certification remains recognised throughout global markets.

Certification bodies also benefit from clearer procedures that improve consistency when assessing products against the IEC 60079 standards.

Ultimately, end users gain increased confidence that certified equipment has been assessed using harmonised international processes.

Growing Demand from Emerging Industries

One of the biggest drivers behind continued IECEx development is the rapid growth of emerging technologies.

Hydrogen infrastructure, battery energy storage systems, carbon capture facilities and renewable energy projects all present new hazardous area challenges.

As these industries expand, manufacturers increasingly require certification that is recognised internationally rather than being limited to one geographical region.

IECEx continues to play a central role in supporting these developments.

The Importance of the IEC 60079 Series

The IECEx Scheme is built around the internationally recognised IEC 60079 series of standards.

These standards cover every aspect of explosion protection, including:

• General equipment requirements
• Flameproof enclosures (Ex d)
• Increased safety (Ex e)
• Intrinsic Safety (Ex i)
• Pressurised equipment (Ex p)
• Equipment installation
• Inspection and maintenance
• Hazardous area classification

As these standards evolve, the IECEx Scheme is updated to ensure certification processes remain aligned with current technical requirements.

What Should Manufacturers Do?

Companies manufacturing equipment for explosive atmospheres should review the latest IECEx documentation and ensure internal certification processes remain aligned with current requirements.

Although existing certificates remain valid where appropriate, organisations planning new product approvals should work closely with their certification body to understand any procedural changes introduced through Edition 9.0.

Maintaining awareness of evolving IEC standards will also help reduce delays during future certification projects.

Looking Ahead

International demand for explosion-protected equipment continues to increase, particularly within hydrogen, renewable energy and advanced manufacturing sectors.

The publication of IECEx 02 Edition 9.0 reinforces the scheme's position as one of the world's leading certification systems for equipment used in explosive atmospheres.

For manufacturers seeking global market access, staying informed about these developments will remain an important part of successful product certification strategies.

Key Takeaways

• IECEx 02 Edition 9.0 was published in 2026.
• The update refines the Rules of Procedure for the IECEx Certified Equipment Scheme.
• Changes focus on certification processes, governance and harmonisation.
• IECEx continues to support international trade through globally recognised certification.
• Emerging sectors such as hydrogen and battery energy storage are driving increased demand for IECEx-certified equipment.

Editorial Note: This article provides an overview of recent IECEx developments. Organisations should consult the latest official IECEx Rules of Procedure and work with their chosen Certification Body before making certification or compliance decisions.

As hydrogen technologies continue to grow, so does the need for pressure measurement equipment that can operate safely and reliably in demanding hydrogen environments. From production and storage to transportation and refuelling, hydrogen systems often involve high pressures and challenging operating conditions.

The HP1000H from ESI Technology has been specifically developed to meet these requirements. Based on the proven HP1000 platform, the HP1000H combines high-pressure capability, hydrogen-compatible materials, and robust sensor technology to provide accurate and dependable pressure measurement across the hydrogen value chain.

Designed for pressures up to 5,000 bar (72,500 psi), the HP1000H offers engineers a trusted solution for critical hydrogen applications.

Engineered for Hydrogen Service

Hydrogen presents unique challenges for pressure measurement equipment. Its small molecular size can affect materials differently from many other gases, making material selection a critical part of transmitter design.

To address these challenges, ESI developed the HP1000H using hydrogen-compatible titanium wetted parts. Each unit undergoes testing in accordance with ISO 11114 standards, which assess the suitability of metallic materials for hydrogen service.

ESI also supplies hydrogen-approved versions with certification confirming their compatibility with hydrogen applications. This gives engineers confidence that the transmitter has been specifically designed and tested for use within hydrogen systems.

Supporting the Hydrogen Economy

As investment in hydrogen infrastructure accelerates worldwide, reliable pressure monitoring plays a key role in ensuring efficiency, safety, and system performance.

The HP1000H is suitable for a wide range of hydrogen applications, including:

• Hydrogen production systems
• Electrolysers
• Hydrogen storage vessels
• Hydrogen distribution networks
• Hydrogen refuelling stations
• Fuel cell development and testing
• Research and development facilities
• High-pressure gas compression systems

In many of these applications, pressure measurement is critical for process control, equipment protection, and regulatory compliance.

Built for Extreme Pressures

Hydrogen systems frequently operate at very high pressures, particularly in storage and refuelling applications. As a result, pressure transmitters must be able to withstand demanding operating conditions while maintaining measurement accuracy.

The HP1000H uses a unique one-piece titanium sensing assembly. Unlike conventional pressure transmitters that rely on welded components, the diaphragm and pressure housing are machined from a single piece of titanium alloy.

This design removes welds from the pressure boundary, improving structural integrity and reducing potential points of failure. It also provides excellent resistance to pressure spikes, fatigue, and cyclic loading.

Combined with the natural corrosion resistance of titanium, this robust construction helps ensure long-term reliability in demanding hydrogen environments.

Proven Silicon-on-Sapphire Sensor Technology

At the heart of the HP1000H is ESI Technology's Silicon-on-Sapphire (SOS) sensor technology.

SOS technology offers exceptional long-term stability, excellent accuracy, and reliable performance across wide temperature ranges. These characteristics are particularly important in hydrogen applications, where operating conditions can vary significantly.

The sapphire substrate provides outstanding electrical insulation and contributes to the sensor's durability and measurement stability over time.

As a result, the HP1000H delivers dependable pressure measurement with minimal drift, helping to reduce maintenance requirements and improve long-term system performance.

ATEX Certification for Hazardous Areas

Many hydrogen applications operate in potentially explosive atmospheres, making hazardous area certification an important consideration.

To support these environments, the HP1000H is available with ATEX Intrinsically Safe approval on 4-20 mA versions. This certification enables installation within designated hazardous areas when used as part of an approved intrinsically safe system.

By combining hydrogen compatibility with hazardous area certification, the HP1000H provides a practical solution for applications where both safety and performance are critical.

A Pressure Transmitter Designed for the Future of Hydrogen

The transition towards cleaner energy continues to drive investment in hydrogen technologies. As systems become more advanced and operating pressures increase, dependable pressure measurement becomes increasingly important.

The HP1000H combines hydrogen-compatible materials, high-pressure capability up to 5,000 bar, proven Silicon-on-Sapphire technology, and optional ATEX certification in a single robust transmitter.

Whether monitoring hydrogen production, storage, transportation, or refuelling systems, the HP1000H delivers the accuracy, durability, and reliability engineers need to support the next generation of hydrogen infrastructure.

For more information or to discuss your application requirements, contact the ESI Technology sales team at This email address is being protected from spambots. You need JavaScript enabled to view it. or call +44 (0)1978 262255.

 By Gavin Brute, Technical Sales Engineer at Pennaire Filtration

Dust is one of the most common hazards across manufacturing and chemical processing sites, yet it remains one of the most underestimated. Long-term exposure is linked to occupational asthma, COPD and other irreversible lung conditions, while numerous dusts also carry a combustible risk if allowed to accumulate. Because symptoms of dust-related illness are rarely immediate, the consequences of inadequate control are often only seen years later, making prevention far more valuable than any later remedy.

Effective dust control depends on understanding where dust is generated, not just how it is filtered afterwards. A facility audit, ideally carried out by qualified personnel, can determine average and peak airborne concentrations at key points across a site. This is typically when previously unmonitored dust sources are identified, such as transfer points, mixing operations or material handling areas where extraction either doesn't exist or is poorly positioned relative to the source.

Local exhaust ventilation (LEV) is one of the most effective controls available, but only when correctly designed and located close to the point of dust generation. Hoods positioned too far from the source, or sized incorrectly for the airflow required, or poorly designed are often the main factors where inadequate dust extraction exists. Reviewing existing hood placement against actual dust-generation points is one of the simplest ways to identify gaps in an otherwise established system.

Once exposure points have been addressed, attention should turn to the dust collection technology itself. A dust collector needs to deliver consistent, predictable performance, removing contaminants effectively while maintaining stable airflow. Filter unit type and media selection are central to this. Each application has its own challenges and more efficient choices, with many factors considered when choosing the correct equipment. Dust load, particle size, bulk density, dust properties, operating processes, and many more considerations should be taken into account when designing an effective LEV system.

A competent dust extraction and filtration engineer can specify a system matched to actual dust loads, effective airflows throughout the system, and compliance requirements rather than over- or under-specifying equipment based on assumptions.

The benefits of getting this right extend well beyond compliance. Effective dust control reduces airborne contamination risk during production, supports consistent product quality, and limits downtime caused by system failure or contamination issues. It also protects machinery, contributing to longer equipment life and more stable system performance, while extended filter life supports lower running costs over time.

Approaching dust control as a combination of exposure, filtration efficiency and system longevity gives facilities a far more complete picture of how well their systems are performing and ensures worker health is always at the forefront of their business.

Website: https://www.pennairefiltration.com/

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.