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Technology you can trust

Safe, reliable and simple to handle process instrumentation
for Safety Instrumented Systems

According to the latest global developments in terms of local implementations of plant safety systems, a strong growing demand can be seen in both, hardware and organisational needs.

Only fully reliable process automation hardware combined with a comprehensive safety management system will meet the future requirements of the process plants.

As a world leading manufacturer of process instrumentation and measurement solutions, KROHNE has implemented all relevant points into a comprehensive portfolio of measurement equipment, meeting the latest international safety standards, and incorporating advanced safety features.

The implementation of SIL into process devices requires not only certain engineering and circuit design, but also deep knowledge of the specifics of the meter type. KROHNE has gained decades of experience with different measuring technologies and meter types in critical applications, and continuously implemented this know-how into meter designs. Our SIL devices have proven themselves in extensive testing and field use and provide the quality and operational reliability to minimise risk in safety-related applications.

  • All new field instrumentation devices are developed acc. to IEC 61058 in SIL 2/3 operation

  • The only Coriolis mass flowmeters on the market allowing wireless device monitoring even in safety-related applications

  • Online diagnostic functions with a Proof Test Coverage of >96 %

  • Partial proof testing to optimise maintenance efforts

OPTIWAVE series – Full portfolio of 80, 24 and 10 GHz radar (FMCW) level transmitters with SIL certification

Built on over 30 years’ experience, our OPTIWAVE radar level transmitters have two things in common: high signal dynamics, offering clear vision for continuous non-contact level measurement, and SIL certifications according to IEC 61508, covering the highest safety standards to protect your staff and installations.

  • SIL 2/3 certified (SIL 3 1oo2) according to IEC 61508 for safety-related applications
  • Highest safety standards for your process
  • Extensive choice of process connections starting from ¾”
  • Lens, Drop and Horn antennas to suit all process and installation conditions
  • Measuring range from the antenna edge up to 30 m / 98 ft

OPTIWAVE series developed according to IEC 61508 safety standards

Smart proof testing

Since our devices adapt to any customer process, self-diagnosis is not sufficient to ensure a complete check of device capability. This is why additional proof tests are done. Proof tests bring a test coverage greater than 82% of all undetected failures by self-diagnosis. They ensure the safe operation of any safety-relevant function and can be carried out under process conditions – no need to remove the device from the tank. More recently, the devices come with a dedicated wizard that helps the user with the proof test step by step.

80 GHz and SIL 2/3 – Radars with a sharp focus on safety

OPTIWAVE 7500 for liquids
OPTIWAVE 6500 for solids
OPTIWAVE 3500 for liquids in the pharmaceutical industry

Interferences from tank walls, internal obstructions or long nozzles are no longer a challenge with our 80 GHz radar (FMCW) level transmitters. Their narrow beam angle provides a sharper focus on your medium, whether it be liquid or solid.

Our radars are SIL 2/3-certified according to IEC 61508, covering the highest safety standards to protect your staff and installations.

> Watch the video of level measurement for safety applicatons

Applications:

  • Solvents, acids, chlorine, resins, ethylene
  • Fertilizer (e.g. urea), ammonium nitrate
  • Paint, ink
  • Liquefied Petroleum Gas (LPG)
  • Hydrocarbons
  • Oil
  • Plastic powder
  • Vaccines
  • Biohazard liquids
  • Purified water

OPTIWAVE 7500 with PEEK Lens antenna measuring aggressive media

80 GHz level transmitters with SIL 2/3 certification24 GHz level transmitters with SIL 2/3 certification10 GHz level transmitters with SIL 2 certification

OPTIWAVE 7500 for liquids in narrow tanks with internal obstructions

  • Continuous, non-contact level measurement in small and narrow tanks with agitators as well as long nozzles
  • Flush-mounted PEEK or PTFE Lens antennas (no tank intrusion), insensitive to deposit
  • PEEK or PTFE flange plate protections as well as a PEEK thread protection for corrosives
  • Measuring range: 0…18 m / 59 ft
  • -50…+200°C / -58…+392°F; -1…40 barg / -14.5…580 psig
  • Applications: Solvents, acids, foaming agents, fertilizer (e.g. urea), chlorine, resins, paint, ink
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OPTIWAVE 6500 for powders and dusty atmospheres

  • Continuous, non-contact level measurement in high and narrow silos, hoppers or containers
  • Flush-mounted PEEK or PTFE Lens antennas (no tank intrusion), insensitive to deposit
  • Optional purging system for antenna cleaning
  • Unaffected by dusty conditions, low reflective media, or angle of repose (no need for aiming kits)
  • Measuring range distance: 0…18 m / 59 ft
  • -50…+200°C / -58…+392°F; -1…40 barg / -14.5…580 psig
  • Applications: Plastic powder, ammonium nitrate
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OPTIWAVE 3500 liquids with hygienic requirements

  • Continuous, non-contact level measurement in small and narrow vessels, small storage tanks and agitated tanks
  • Flush-mounted Lens antenna
  • Suitable for SIP (Sterilisation In Place) and CIP (Cleaning In Place)
  • Large choice of hygienic process connections
  • Measuring range: 0…18 m / 59 ft
  • -40…+150°C / +302°F; -1…25 barg / -14.5…362 psig
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OPTIWAVE 5400 for liquids in basic process applications

  • Continuous, non-contact level measurement in closed tanks or in the open air
  • PP Drop antenna insensitive to condensation
  • PP flange plate protection and cladded antenna extensions for corrosives
  • Metallic Horn antennas with optional purging system
  • Measuring range: 0…18 m / 59 ft
  • -50…+130°C / -58…+266°F; -1…16 barg / -14.5…232 psig
  • Applications: Alcohols e.g. methanol, ethanol, solvents, acids, bases, phosphorus, additives condensates, lime slurry, fuels, hydraulic oils and other hydrocarbons
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OPTIWAVE 6400 for solids from granulates to rocks

  • Continuous, non-contact level measurement in/on silos, stockpiles, conveyor belts etc.
  • PP or PTFE Drop antennas insensitive to product build-up
  • Metallic Horn antennas with optional purging system
  • Unaffected by angle of repose – no need for aiming kits
  • Built-in configurations for different surface profiles
  • Measuring range: 0…18 m / 59 ft
  • -50…+130°C / +266°F; -1…16 barg / -14.5…232 psig
  • Applications: Fertilisers, plastic granulates (PE, PP, PVC)
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OPTIWAVE 7400 for agitated and corrosive liquids

  • Continuous, non-contact level measurement in harsh environments
  • PTFE or PEEK Drop antennas insensitive to condensation
  • PTFE flange plate protection for corrosives
  • Metallic Horn antenna with optional purging, heating or cooling systems to prevent crystallisation or build-up
  • METAGLAS® second sealing barrier for toxic and dangerous liquids
  • Quick coupling system: converter is rotatable and removable under process conditions
  • Measuring range: 0…18 m / 59 ft
  • -50…+200°C / -58…+392°F (up to +700°C / +1292°F in non-Ex applications);
    -1…100 barg / -14.5…1450 psig (higher on request)
  • Applications: Alcohols, e.g. methanol, ethanol, solvents, acids, bases, additives, butadiene, ethylene, propylene, molten sulphur, liquefied gases, hydrocarbons and fuels, benzene, hydraulic oils, condensates
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OPTIWAVE 5200 for liquids in storage and process applications

  • Continuous, non-contact level measurement in storage and process tanks
  • PP or PTFE Wave Horn antennas for corrosives
  • Metallic Horn antennas with optional purging, heating or cooling systems to prevent crystallisation or build-up
  • METAGLAS® second sealing barrier for toxic and dangerous liquids
  • Quick coupling system: converter is rotatable and removable under process conditions
  • Measuring range: 0…30 m / 98 ft
  • -60…+250°C / -76…+482°F; -1…40 barg / -14.5…580 psig (higher on request)
  • Applications: Solvents, alcohols, bases, acids, ferric chloride, hydrocarbons
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OPTIWAVE series – Further information

OPTIWAVE product pages

Get a quick overview of all OPTIWAVE level transmitters, technical highlights and target applications

View website

Case Studies

Take a look at our application library, which gives many success stories about OPTIWAVE level transmitters in the field

View library

Video

Watch a video about easy configuration of OPTIWAVE level transmitters

Watch video

Video

Watch a video about the comparison between 24 GHz and 80 GHz technology

Watch video

Free eLearning course radar level measurement

The course “Radar level measurement“ deals with the measuring principle, advantages, applications and installation notes

Attend free eLearning course

Free eLearning course SIL

Ten practical eLearning modules from TÜV NORD, KROHNE, SAMSON and PHOENIX CONTACT give an overview of the basic concepts and methods incl. many practical examples

Attend free eLearning course

OPTIMASS – A world’s leading series of Coriolis mass flowmeters

The OPTIMASS series has covered all bases of all relevant applications around the globe for years. KROHNE offers the entire range of superior performance and high accuracy mass flowmeters. From small to large. For 0.00015 to 4600 t/h flows. For cryogenic applications or high temperatures up to +400 °C/+752 °F. For standard or demanding applications such as highly corrosive media or multiphase flows with a wide range of gas fractions and complex flow conditions.

OPTIMASS series with new MFC 400 converter

New MFC 400 converter – Novel features for safety-related applications

With the introduction of the new MFC 400 converter for the whole OPTIMASS series, extra features have become available throughout a wide range of applications in Safety Instrumented Systems.

  • Fully developed for safety applications acc. to IEC 61508 2010
  • Diagnostic coverage of >96 %
  • Diagnostic test interval of less than one minute: this allows use in SIL 3 applications or in continuous demand mode, the highest specified levels of operation
  • SIL 3 software certification ensures the lowest possible number of systematic software errors
  • Fail-safe bus topologies and other hardware safety-relevant features
  • The only Coriolis mass flowmeters on the market allowing secure wireless access via Bluetooth® or remotely via HART® even in safety-related applications

+ View SIL certificate

The only SIL certified Coriolis mass flowmeters on the market allowing Bluetooth® communication

Focus on safety

Safety in remote parametrisation

A plant safety management concept not only requires secure software and hardware components, but also must cover all the commissioning and maintenance of the relevant process automation equipment. For this reason, the MFC 400 converter software provides the most secure and versatile authentication concept for all remote access, fully certified via TÜV Rheinland.

The MFC 400 allows safety-relevant data to be changed via HART® signals using an FSK modem, even from the control room. Thus the operator no longer has any need to go out into the field to change any safety-relevant configuration.

This requires that all access levels are fully password protected, no matter whether the configuration is carried out remotely via HART®, via the local display, or via the OPTICHECK service tools.

Authentication concept of all the MFC 400 converters

Remote parameterisation of safety-relevant data via HART®

Enhanced online diagnostics

Developed acc. to IEC 61508/61511, the OPTIMASS Coriolis flowmeter series is designed to meet the highest safety as well as security standards. In order to achieve diagnostic coverage of >96 %, all OPTIMASS flowmeters have integrated continuous signal monitoring, redundant references and calibrations.

Redundant storage of all device configuration data allows the converter to be replaced at any time without the need for manual reconfiguration: This means higher safety and less effort for the end-user.

  • Electronic hardware
  • Humidity
  • Failure of temperature sensor
  • Corrosion / abrasion of the sensor
  • Failure in measuring tube
  • Failure in motion sensors or actuators
  • Mechanical stress / external vibrations

> Watch the online diagnostics video

Online diagnostics of Coriolis mass flowmeters

Partial proof test – Proof testing in the process

Proof testing of safety-related functions usually requires closing the line and demounting of the measurement and actuation equipment, at considerable cost and plant downtime. Partial proof tests can be carried out while the equipment is still built into the process and can be performed a lot easier than such a full test.

For this reason, a partial proof test procedure for the OPTIMASS series has been developed in conjunction with TÜV Rheinland.

Proof test coverage (PTC) of up to 82 % is thus provided without the need to remove the device. This ensures the safe operation of any safety-relevant function and helps to justify the lengthening of full proof test intervals.

> Watch the OPTICHECK DTM video

Proof test coverage

Proof test coverage

> Watch the OPTICHECK Master video

Focus on simple handling

New simple local parameterisation concept

All parameters within the OPTIMASS Coriolis flowmeters follow an intelligent concept: only frequently used parameters appear on the first level of operation, allowing for clearly structured access to all relevant data.

Parameters seldomly used are only shown on an ‘expert‘ level. As a result, the operator needs less time for device parameterisation and configuration, at the same time accidental misadjustments are reduced to a minimum.

Parameterisation via the local display

The only Coriolis mass flowmeters on the market allowing wireless access to when in SIL mode

All OPTIMASS flowmeters with the MFC 400 converter are now available with secure Bluetooth® communication. OPTIMASS with sensors and electronics MFC 400 is therefore the first and only device on the market that allows wireless parameterisation and monitoring in safety-related applications.

Using the new OPTICHECK Flow Mobile app on mobile devices or FDT/DTM on laptops commissioning, parameterisation, verification, performance monitoring and application parameters can be managed on-site via a Bluetooth® connection (≺20 m/65.6 ft) – ideal for devices installed in inaccessible areas or EX Zone 1.

When in SIL mode, the meter allows reading of all parameters and running diagnostic functions, when in NON-SIL mode all OPTICHECK Flow Mobile functions are enabled.

> Watch the OPTICHECK Flow Mobile video

+ Learn more about OPTICHECK Flow Mobile app

Focus on reliability

Advanced Entrained Gas Management (EGM™)

Next to secure and safe operation of flow measurement equipment, the best availability and reliability are essential for smooth and efficient plant operation. In the past, Coriolis flow measurement of liquids with entrained gas was technically impossible and most meters stopped functioning when gas fractions in the medium exceeded 4-5 %.

Introduced in 2012, Entrained Gas Measurement (EGM™) for all OPTIMASS Coriolis mass flowmeters has overcome this challenge. The KROHNE OPTIMASS series is the only range of meters to offer a solution for all flow conditions at all gas volume fractions – from 0 to 100 % – as a standard feature (not a cost-added option).

> Watch the demonstration of the EGM™ technology based on a function model

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> Attend free online eLearning course “Entrained Gas Management in Coriolis Flowmeters“

New opportunities with EGM™ functionalityThe secret of 2-phase flow measurementMass or density – both are possible even with gas entrainment

EGM™ functionality has overcome many of the previously insoluble problems experienced with earlier versions of Coriolis meters. As well as easily coping with liquids mixed with gas, the OPTIMASS can cope with slurries also containing gases, and highly viscous fluids with plugs of gas entrainment.

EGM™ also helps to overcome problems of flow regimes where increased viscosity and the relative different velocity of the liquid and the gas affect the flow regime.

Without entrained gas, the desired regular oscillation of the tubes in the Coriolis mass flowmeter is undisturbed. Gas entrained in the liquid dampens this regular oscillation of the measuring tubes, and as the gas content increases, the oscillation can come to a complete stop.

To overcome this, KROHNE has developed powerful control algorithms. These algorithms allow the meter to maintain the oscillation and continue to operate even with complex flow regimes. Even during a complete transition from a pure liquid phase to a gas phase and back, i.e. from 0 to 100% gas content, the device won‘t stop the operation.

Coriolis flowmeters can measure the mass flow, volume flow and density of any fluid, whether it is aerated or not. Density measurement of single-phase fluids is common practice, but for traditional meters it becomes challenging when there is entrained gas.

In many applications where entrained gas is present, meters with EGM™ show excellent performance and repeatability for process control, batching, loading, offloading and transfer measurement.

Focus on better performance over the entire life cycle

myDevice – Smart service tools

All OPTIMASS flowmeters come with a comprehensive tool suite, to cover their entire life cycle. The smart service tools in the myDevice package make it a lot easier for you to commission, verify and monitor devices in the field. They provide detailed reports for proof test documentation of safety loops (IEC 61508, 61511) and also help you to create a detailed maintenance plan.

Via a serial number or AutoID acc. to DIN SPEC 91406 you get convenient access to all device-related assets such as manuals, approvals and calibration certificates.

A complete on-line training and tutorial portfolio rounds off the suite to help you resolve any questions about KROHNE Coriolis mass flowmeters.

  • Wireless parameterisation and commissioning
  • Verification with highest test depth without process interruption
  • Detailed reports for proof test documentation of safety loops (IEC 61508, 61511)
  • Device-specific assets via serial number or AutoID
  • Step-by-step video tutorials
  • 24/7 online course availability

> Watch the myDevice video

> Visit myDevice microsite

+ Learn more about OPTICHECK Mobile

+ Learn more about OPTICHECK DTM

+ Learn more about OPTICHECK Master

+ Visit Product Information Center KROHNE (PICK)

+ Watch Installation, Commissioning and Verification videos (ICV)

+ Visit KROHNE Academy online

Further information

OPTIMASS product pages

Get a quick overview of all OPTIMASS flowmetrs, technical highlights, target applications and product variants

View website

OPTIMASS WebApp

Get a detailed 3D view of all instruments, check their technical data and see real life applications

View WebApp

Case Studies

Take a look at our application library, which gives many success stories about OPTIMASS flowmeters in the field

View library

Free eLearning course Coriolis mass flowmeters

The course “Coriolis Mass Flowmeters“ deals with the Coriolis principle, the general functionality and operating mode

Watch preview

Free eLearning course EGM

The course “Entrained Gas Management in Coriolis Flowmeters“ gives an introduction on how to master liquid applications with entrained gas.

Watch preview

Free eLearning course SIL

Ten practical eLearning modules from TÜV NORD, KROHNE, SAMSON und PHOENIX CONTACT give an overview of the basic concepts and methods incl. many practical examples.

Attend free eLearning course

KROHNE SIL competence

With 100 years experience in process instrumentation and more than 15 years experience in functional safety acc. to 61508/61511, KROHNE has gained fundamental know-how in consultation, development and operation of safety-related applications.

Global support throughout the entire safety life cycle

Complete product portfolio for flow, level, pressure and temperature measurement

Comprehensive training tools, from online seminars to local trainings

Consulting in safety-related applications

Professional consulting around all safety-related topics is one of key drivers.

Especially in functional safety (SIL), KROHNE offers global support in all questions around the standards IEC61508/61511 throughout the entire safety life cycle. Beginning with the project phase, risk assessments, PFD calculation, proof testing up to decommissioning. KROHNE has many globally acting partners in its disposal, trying to provide the best support to its clients, all around the globe.

+ Contact us

Large team of field service engineers and technicians

Training for safety-related topics

KROHNE Academy and Service Academy

KROHNE Academy is a series of seminars organised in collaboration with leading automation companies. Taking place in various countries, it addresses key operating issues, from plant safety to ways of increasing efficiency and controlling costs, and highlights possible solutions. Should your interest be more towards working “hands-on” with our devices, then our Service Academy is what you are looking for.

To fully address individual training needs, KROHNE organises tailor-made training sessions at any time, virtually anywhere in the world. All aspects starting from device-specific courses or legal aspects relating to functional safety (SIL) are covered.

Functional safety seminar at KROHNE headquarters, Duisburg, Germany

Tailor-made workshops at customer`s site

KROHNE Academy online – Web-based trainings for the process industry

KROHNE Academy online is an online eLearning platform focusing on industrial process instrumentation. It comprises electronic training courses with full audio, explaining measuring technology without relating it to specific manufacturers and live webinars.

KROHNE Academy not only gives you direct access to the deep knowledge and vast experience of KROHNE. You also get the latest information on standards and regulations from eLearning courses, such as “Functional Safety (SIL)“, which we develop in cooperation with our partners.

  • Hands-on learning materials on process instrumentation, e.g. measuring principles, SIL
  • Free and unlimited access to all courses, available in English, German, French, Russian, Chinese
  • Learning can be done at your own pace with progress monitoring and course completion certificates
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+ Attend free eLearning course “Functional Safety (SIL)“: Ten practical eLearning modules from the companies TÜV NORD, KROHNE, SAMSON und PHOENIX CONTACT will give you an overview of the basic concepts and methods of functional safety. Many practical examples deepen theoretical basics.

+ Visit KROHNE Academy online

Instrumentation portfolio for safety-related applications

OPTIMASS 6400

Coriolis mass flowmeter for advanced process applications

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H250 M40

Variable area flowmeter for liquids and gases

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DK37 M8M

Variable area flowmeter for advanced low liquid and gas flows

View product

DK32/34

Variable area flowmeter for low liquid and gas flows

View product

OPTISWIRL 4200

Vortex flowmeter for utility applications and energy management systems

View product

OPTIBAR DP 7060 with orifice plate

DP flowmeter for volume flow measurement of liquids, gases and steam

View product

OPTIWAVE 3500

Radar (FMCW) level transmitter for liquids with hygienic requirements

View product

OPTIWAVE 5200

Radar (FMCW) level transmitter for liquids in storage and process applications

View product

OPTIWAVE 5400

Radar (FMCW) level transmitter for liquids in basic process applications

View product

OPTIWAVE 6400

Radar (FMCW) level transmitter for solids from granulates to rocks

View product

OPTIWAVE 6500

Radar (FMCW) level transmitter for powders and dusty atmosphere

View product

OPTIWAVE 7400

Radar (FMCW) level transmitter for agitated and corrosive liquids

View product

OPTIWAVE 7500

Radar (FMCW) level transmitter for liquids in narrow tanks with internal obstructions

View product

OPTIFLEX 2200

Guided radar (TDR) level transmitter for storage and process applications

View product

OPTIFLEX 3200

Guided radar (TDR) level transmitter for liquids with hygienic requirements

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OPTIFLEX 6200

Guided radar (TDR) level transmitter for solids from granulates to powders

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OPTIFLEX 7200

Guided radar (TDR) level transmitter for advanced liquid applications

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OPTIFLEX 8200

Guided radar (TDR) level transmitter for liquids at high temperature and pressure

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OPTISOUND 3010

Ultrasonic level transmitter for basic applications

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OPTIBAR DP 7060

Differential pressure transmitter for advanced applications and high temperatures

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OPTISWITCH 3100

Vibration level switch for solid applications

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OPTISWITCH 3200

Vibration level switch with cable extension for solid applications

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OPTISWITCH 3300

Vibration level switch with rigid extension for solid applications

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OPTISWITCH 5300

Vibration level switch for heavy-duty applications

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OPTISWITCH 5100

Vibration level switch for process applications

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OPTISWITCH 5150

Vibration level switch for liquids in hygienic applications

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OPTISWITCH 5200

Vibration level switch with rigid extension for process applications

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OPTISWITCH 5250

Vibration level switch with rigid extension for hygienic applications

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OPTIBAR PC 5060

Pressure transmitter for advanced process pressure and level applications

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OPTIBAR PM 5060

Pressure transmitter for process pressure and level applications

View product

OPTIBAR DP 7060

Differential pressure transmitter for flow, level, differential pressure, density and interface measurements

View product

OPTITEMP TT 51 C

Head-mounted temperature transmitter with universal dual input, galvanic isolation, HART® and SIL

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OPTITEMP TT 51 R

Rail-mounted temperature transmitter with universal dual input, galvanic isolation, HART® and SIL

View product

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Head office KROHNE Messtechnik GmbH
Ludwig-Krohne-Str. 5
47058 Duisburg, Germany
www.krohne.com

KROHNE is a leading system provider in the field of industrial process measurement instrumentation. Employing over 4,000 people worldwide, KROHNE provides complete solutions for flow, level, pressure and temperature measurement, as well as for process analysis. In addition to these measurement devices, KROHNE offers commissioning, calibration and maintenance services. The name KROHNE stands for innovation, reliability and high-quality products.

www.krohne.com

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