OVERVIEW 
CHEMISTRY 
WATER 
Unique 3D linearisation
Maximum accuracy even under difficult process conditions such as high static pressure
KROHNE PRESSURE MEASUREMENT – FOR A SUBTLE DIFFERENCE
As a main instrumentation vendor (MIV), KROHNE ensures customer satisfaction by supplying the entire range of process instrumentation. Our pressure measuring technology is the proverbial icing on the cake. On this page discover how technology, know-how, material and experience can make all the subtle difference – with superior results for you, the customer.
Pressure is one of the most commonly measured parameters in the process industry. It is used to measure the flow, level and even the process pressure directly. We offer a wide selection of resistant materials and digital communication protocols specifically designed for the chemical industry. Our devices and technologies meet the high requirements on equipment safety and explosion protection – for technically perfect solutions tailored to your business.
All of these require a lot of experience and measuring know-how, which we have been offering for over 100 years.
WHEN TECHNOLOGY MAKES THE DIFFERENCE
We have incorporated a number of high-end technologies in our products to ensure we can deliver reliable values even under difficult conditions.
Whether hot or cold, under high pressure, abrasive or aggressive, flow rate, level or process pressure: Pressure measurement must meet many requirements if plant availability and safety in chemical systems are to be increased.
The process pressure transmitters in the OPTIBAR family are geared to the requirements of the chemical industry. Their unique design guarantees cost-effective, accurate and reliable measurement, starting with commissioning through to the end of their service life.
As the only manufacturer world-wide, KROHNE carries out a Total 3D-linearization, which in process recognizes and effectively compensates all influencing factors The availability of all options, ranging from Bluetooth®, FOUNDATION fieldbus®, PROFIBUS PA®, HART 7® to ATEX/IECEx and SIL-certified versions, rounds off our portfolio.
DECISION-MAKING TOOL
Which is better suited to your applications: electronic differential pressure or conventional differential pressure?
Your benefits
- All process class devices available as SIL version
- Precise measurements with long-term stability, even under difficult process conditions thanks to 3D linearisation
- Quick commissioning and low total cost of ownership
- Electronic differential pressure measurement as an economical alternative to conventional DP measurement
- 100% error detection with diaphragm rupture for greater process reliability
- Numerous communication options: HART 7, FF, PA, Bluetooth, IO-Link
HIGHLIGHTS
Electronic differential pressure measurement (eDP)
Smart and economical alternative to diaphragm seal assemblies with long capillary tubes
Robust, reliable product design
Excellent plant safety thanks to overpressure protection. All process class devices available as SIL version
WHEN EXPERTISE MAKES THE DIFFERENCE
Every process is unique. Which is why the method must be optimally selected and designed for the respective application, regardless of whether it involves measuring the fill level, flow rate or pressure. Electronically measuring pressure as a physical variable is usually very challenging. How can, for example, unwanted influences from temperature, long-term effects, over-pressure events and surges be kept to a minimum?
Our pressure transmitters embody decades of experience. In practice, OPTIBAR pressure transmitters offer impressively precise results with long-tern stability, even in challenging process conditions. All the while, you benefit from KROHNE’s comprehensive measuring know-how thanks to the vast application knowledge of our engineers and service technicians.
From simple, low-cost solutions to particularly sophisticated applications at high pressures or extreme temperatures: we will find the optimal solution for your measuring task competently and quickly.
DECISION-MAKING TOOL
Pitot tubes make your energy flows transparent. Ever considered a retrofit?
Your benefits
- Know-how of our engineers and technicians across all measuring principles
- Many years of experience and broad knowledge of applications in the chemical industry
- Full pressure portfolio from pressure transmitters, diaphragm seal assemblies, orifice plates, pitot tubes to Venturi tubes
- Select and design the optimal processes for the respective application
HIGHLIGHTS
Broad knowledge of applications
Experienced specialist engineers and technicians in all industrial sectors
Focus on customer's process
Select and design the optimal process for the individual application
Full pressure portfolio
From affordable solutions to sophisticated applications
WHEN MATERIAL MAKES THE DIFFERENCE.
In the case of applications involving extremely aggressive media, it is essential in pressure measurement to select the right quality and material for the measuring cell. When metal materials reach their limits of use through corrosion and leakage of the diaphragm, a chemically resistant, wear-free membrane in oxide ceramic may represent a good alternative. In addition, a very high degree of process reliability and plant availability is guaranteed by an integrated detection system for diaphragm rupture.
The OPTIBAR series offers a wide range of pressure transmitters, diaphragm seal assemblies, primary elements and other accessories, which are geared to the requirements of the chemical industry.
Ranging from stainless steel 316L as standard to ceramic, Hastelloy®, tantalum, titanium, Monel®, Duplex® to coatings such as gold or rhodium, there are plenty of options to suit many different requirements.
WEBINAR
Diaphragm seal assembly or not? In touch with the process.
Your benefits
- Durable and robust materials for whatever the process
- Extensive selection of stainless steel 316L, ceramic, Hastelloy®, tantalum, titanium, Monel®, Duplex® right through to gold or rhodium
- Ceramic measuring cells with considerable long-term stability, vacuum and overload resistance
- Metal measuring cells with fully welded process connection for high pressures to 1000 bar
- Solutions with diaphragm seal assemblies for high-temperature or corrosive applications
- The right housing material for all requirements in the chemical sector
Highlights
Wide range of materials
Extensive range of materials for the chemical industry – from ceramic and gold to stainless steel
Robust ceramic diaphragm
Pressure transmitter with flush-mounted, ceramic diaphragm for corrosive and abrasive media as a compact alternative to diaphragm seal assemblies
Long-term protection from diffusion
Gold/rhodium coatings for applications with high pressure or temperatures, e.g. when measuring hydrogen.
WHEN EXPERIENCE MAKES THE DIFFERENCE
100 years of KROHNE. That means 100 years of thinking in terms of “solutions” rather than “products” to create real added value. As a supplier of your pressure transmitters, we accompany you every step of the way. Chemical/petrochemical plants and processes are becoming increasingly complex. From the outset KROHNE is at your side, offering you all its experience and safety solutions. Proven in practice, they undergo continuous improvement, so affording protection to both your staff and systems.
When it comes to applications with corrosive, flammable or abrasive media, you can count on our expertise in measurement technology. Besides the supply of complete measuring solutions with all components, our range of consultation services also includes explosion protection, plant safety, project planning, engineering and subsequent documentation.
We design and take care of the measuring solution according to your needs. Allowing you to devote your full attention to your process.
WHITEPAPER
Hydrogen under pressure: What are the challenges in terms of measuring technology?
Your benefits
- One hundred years of experience and broad application knowledge in industry
- Know-how of our engineers and technicians across all measuring principles
- Complete engineering process from design to delivery of the finished solution, including documentation
- Full compliance with explosion and safety-related applications (SIL)
HIGHLIGHTS
One hundred years of experience in measuring technology
Expertise for highest quality and reliability
End-to-end customer support
We take care of the entire design and all performance parameters right through to commissioning
Plant safety
Know-how in functional safety and explosion protection as per the latest standards
PRACTICAL ISSUES
The choice and design of the measuring technology and the measuring method are as individual as every process. From simple, cost-effective solutions to highly complex solutions – our engineers and technicians are ready for anything. Discover our expertise for yourself by browsing through some practical examples.
LOOKING FOR THE RIGHT
PRESSURE GAUGE?
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