Four new intelligent pumps.

Four innovative diaphragm pump features for flow, pressure, and vacuum control as well as versatile dosing have been introduced by KNF. These solutions set a new benchmark for precision, reliability, and adaptability. These new intelligent liquid, gas and vacuum pumps feature integrated sensor technology offer advanced closed-loop control for achieving and maintaining flow, pressure or vacuum as well as precise dosages.

For liquid metering applications, KNF has developed the FMS-FC 1.400. This diaphragm pump with integrated Flow Control uses a precise flow sensor and ensures precise, accurate, and stable liquid delivery. It achieves a maximum flow rate of 3.4 l/min, a maximum pressure of 6 bar (rel.) and offers a maximum suction height of 3 mH2O.

Another intelligent liquid diaphragm pump innovation is the FD 1.200 with Versatile Dosing which delivers precise and repeatable volumes for demanding applications. For this, it uses advanced stepper motor technology and actively actuated valves. It offers a maximum flow rate of 40 ml/min, a maximum pressure of 6 bar (rel.), and a suction height of at least 4.5 mH₂O. Compact, chemically resistant, and customizable, it sets a new standard for accurate dosing.

The new MGP 75 diaphragm gas pump with intelligent Pressure Control maintains precise and consistent gas pressure even under changing conditions. Using the latest KNF motor technology, it achieves a maximum flow rate of 78 l/min, a maximum pressure of 1 bar (rel.), and a maximum vacuum down to 25 mbar (abs.).

Equipped with the intelligent feature Vacuum Control, the new micro vacuum pump NVC 830 maintains exact vacuum levels in demanding environments. This compact pump delivers a maximum flow rate of 4.7 l/min and a maximum vacuum down to 55 mbar (abs.). Intelligent features for maximum precision.
Each pump integrates modern sensor technology and proprietary motor control to maintain exact setpoints, even under dynamic conditions like changing pressure or media temperature. This integrated closed-loop control reduces engineering efforts to a minimum. It makes the potentially difficult integration of external sensor and development of new control logic from scratch obsolete.

Flexible connectivity and integration.
The pumps can operate autonomously or can be controlled via analog signals such as control voltage. For use in complex systems, the pumps also support modern communication protocols like UART, enabling seamless integration into smart environments.

Demanding applications.
Based on a modular design, the pumps can be customized quickly and cost-effectively. Options include material selection, electrical and line connections, and digital settings such as output setpoint, ramp-up speed or maximum motor speed limits, depending on the pump. This flexibility makes the pumps an ideal choice for critical applications in industries including medical technology, analytical systems, and industrial processes.

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#KNF #PAuto @mepaxIntPR

Micro vacuum pump.

The new MPXS series from COVAL offers one of the most compact intelligent vacuum pumps on the market, without compromising on the technologies that characterise the French brand. COVAL's aim is to provide manufacturers with an even more efficient tool for handling non-porous parts at high speeds on robots or automated systems.

The MPXS micro vacuum pump stays true to the design principles of COVAL's intelligent vacuum pumps, which are energy-efficiency, high-performance and communications I/O. It adds ultra-compactness, and thus concentrates all the qualities of COVAL's intelligent vacuum pumps into a smaller physical space.

With a width reduced to just 12.5 mm and a weight of only 87 grams, the MPXS micro vacuum pump is the smallest vacuum pump ever designed by COVAL. This size means it can be installed as close as possible to the suction cups, inside restricted spaces, for reduced pick-up time with no loss of load, guaranteeing high speeds.

MPXS series micro vacuum pumps quickly reach a maximum vacuum of 85%, thanks to single-stage Venturi technology, and is thus perfectly suited to dynamic applications requiring very short cycle times. The two power levels of 15 and 26 Nl/min add to their versatility and enable them to adapt optimally to the needs of each application.

The MPXS micro vacuum pump provides the user with useful information at every stage of operation. Its Human Machine Interface (HMI) makes it easy to read operating, diagnostic and maintenance information, and enables rapid parameter setting. Additionally, the integrated IO-Link communication interface supports fast, cost-effective installation, continuous diagnostics, centralized parameter setting and efficient communication with higher-level protocols (EtherNet/IP, PROFINET, EtherCAT...).

These micro vacuum pumps feature ASC (Air Saving Control) technology, which intelligently regulates vacuum generation, enabling energy savings of 90% on average by stopping air consumption once the desired vacuum level has been reached.

The modularity of the MPXS series offers a wide choice of configurations, ensuring great flexibility of installation and use to suit the varied needs of industrial applications. It is available as stand-alone modules, or in islands of up to 8 modules, with standard or powerful adjustable blower options. The MPXS series is precisely tailored to each application, for maximum efficiency.

The pump's small size, high performance and wide range of functions and configurations make it ideal for industrial applications requiring high speeds: High-speed pick-and-place, robot manipulators, automated production. Especially in use in the plastics, electronics and pharmaceutical industries.

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@COVAL_SAS @mepaxIntPR #PAuto  

Tested but not touched.

TorqSense, a non-contact digital torque monitoring system that could guarantee an infinite lightness of touch has proven to be the only way to test the seals of super high performance vacuum systems.

The ultimate fields of precision manufacture, such as electronics, biophysics and thin film deposition where tolerances are measured in atoms, are often conducted in hard vacuum to remove airborne contaminants and avoid the performance reducing effects of tiny air movements.

However the vast majority of vacuum chamber designs require seals for rotary drive shafts (called rotary feedthroughs) and ‘feedthroughs’ for the passage of materials, components, tools and finished products. In high vacuum applications conventional seals are unlikely to be able to achieve the performance specifications required, so magnetic fluid seals are used.

A ferrofluid is a stable colloidal suspension of sub-domain magnetic nano particles in a liquid carrier. The particles, which have an average size of about 100Å (10 nm), are coated with a stabilising dispersing agent (surfactant), which prevents particle agglomeration even when a strong magnetic field gradient is applied to the ferrofluid. With over thirty years of experience producing seals for the world's most demanding applications, Ferrotec of Woolwich in London is able to optimise ferrofluid materials for the most extreme performance requirements and incorporate them into bespoke vacuum system designs.

“About half of our work is to bespoke design,” says Jeff Lewcock of Ferrotec, “and we have to test every seal to the nth degree to meet out customers specifications. To test the feedthrough it is mounted onto a vacuum chamber that is connected to a helium leak detector. Helium is then spayed onto the feedthrough and the leak rate observed during static and dynamic running.”

As part of the test the starting and running torque of the seal are measured and the power loss through the seal is calculated. These readings allow Ferrotec to troubleshoot the individual seal, analyse the design’s performance and add to their knowledge base. “With the sort of tolerances we work to we needed a torque sensor that didn’t add any extra drag to the whole seal mechanism, so we were delighted to discover Sensor Technology’s non-contact TorqSense,” says Jeff.

@sensortech  #PAuto #Torque #Vacuum

Four ways to make your vacuum system more efficient.

Martina Höller, Electrical technology product manager CEE, SMC Austria, here outlines four simple ways that can reduce the energy consumption of the vacuum system, based on decades of experience and know-how. Using less energy per lift/transfer provides a direct contribution to bottom-line profitability while simultaneously supporting industry’s drive to net-zero carbon emissions.

With energy prices surging across Europe, efficiency has become a high priority for all manufacturing and process plants using vacuum handling systems.

The latest energy-saving technology and process engineering can make a genuine difference to vacuum handling applications, whether the sector is packaging, metalworking, automotive, healthcare or any other. Simply follow these four steps to see a notable improvement in your system’s efficiency.

It’s possible to generate vacuum centrally by means of a vacuum pump or de-centrally (directly on the machine) using vacuum ejectors. SMC’s extensive range of vacuum ejectors – from super compact inline ejectors up to ultra-high efficiency multi-stage ejectors with high-performance silencers – are suitable for vacuum flows up to 600 Nl/min, thus meeting the needs of almost any industrial application.

Every type of ejector has its specific parameters, which are dependent on one another. These include: standard supply pressure (the amount of compressed air you need to achieve the highest possible vacuum pressure); maximum suction flow rate (volume of air taken in by the ejector); maximum vacuum pressure (maximum value of the vacuum pressure generated by the ejector); and air consumption (the amount of air consumed by the ejector when operating with the standard supply pressure).

SMC´s Multistage Ejector – ZL Series
A light efficient push to your suction

4 bar: the optimal supply pressure (on average) for SMC ejectors.
Ask yourself, do you really need the maximum vacuum pressure to handle your workpiece? You need to pose this question because the level of vacuum pressure will relate directly to your air consumption and your costs. By way of example, if you use of 0.5 MPa (5 bar) main line supply pressure to operate our ZL112A ejector (with valves), your air consumption will total around 78 l/min (4680 l/hour) to achieve a maximum vacuum pressure of -84 kPa. However, by choosing to operate the ejector at a reduced 0.35 MPa (the standard supply pressure for this type of ejector), you can cut air consumption to 57 l/min (3420 l/hour) and still achieve the same maximum vacuum pressure (-84 kPa). A significant 27% energy saving.

As a point of note, while many manufacturers have yet to transition from 7 bar standard shop pressure, optimal vacuum operation takes place at an average of 4 bar, so reducing from 7 bar to 4 bar not only benefits your bottom line and the future of the planet, it will have no impact on the effectiveness of your operations.

Extract from ZL´s catalogue

Returning to the example, if you can safely handle the workpiece with a maximum vacuum pressure of -65 kPa, you can reduce the supply pressure even further, to 0.25 MPa (2.5 bar). This would cut your air consumption to 45 l/min (2700 l/hour), delivering an impressive 43% energy saving.

Use a bigger pad diameter, not higher supply pressure.
Some engineers make the mistake of increasing supply pressure to achieve a higher holding force, but this leads to more energy consumption and more cost. In fact, it’s directly proportional, so doubling the vacuum pressure will double your holding force and double your energy costs.

Instead, it may be possible to increase the diameter of your vacuum pads in certain applications. When doubling pad diameter, your holding force quadruples, while your energy costs remain the same as there is no increase in supply pressure. The price difference between a 20 mm and 40 mm diameter vacuum pad is typically less than €5.

Vacuum ejectors with energy-saving function.
Some vacuum ejectors feature a vacuum pressure switch with an energy-saving function that can reduce energy consumption by up to 93%. So how do they work? Well, you first define the pressure range within which you can securely hold the workpiece, for example from -65 to -55 kPa. The integration of pressure switch with energy-saving function serves to cut off the air supply upon reaching the desired vacuum level. Vacuum only generates again when the pressure falls below the lower range, in this case -55 kPa.

Take a vacuum handling application involving a conventional ejector that operates at 450 cycles per hour, 10 hours a day, for 250 days a year. Such a system will consume around 9350 m3 of compressed air every year. However, using a vacuum ejector with an energy-saving function will reduce air consumption to just 638 m3 per year, delivering the aforementioned 93% saving. The potential savings are higher in short-cycle applications.

Smart management.
To maximise the use of an energy-efficient vacuum handling system, SMC recommends that you adopt ‘smart’ ejector systems. A serial transmitted ejector manifold requires no separate input/output units to operate and avoids complex electrical wiring of the valves and sensors.

Field devices can connect directly to the PLC. Via the PLC, it is possible to set and monitor the pressure values, suction or release verification, the energy-saving function and the valve protection function. This concept leads to better control of your application, more valuable data, simple set-up and on-board product diagnostics, as well as easy monitoring.

If you’ve ever dealt with a vacuum-based system you’ll be aware that vacuum can be unpredictable as the interaction and the behaviour between workpiece and pad differs depending on the application. The only real way to be certain of the results is to take advantage of an expert technology supplier such as SMC, which can conduct tests at customer sites or at its laboratories located across Europe. Vacuum is frequently about trial and error regarding pressure, flow, pad size, number of pads and more, particularly if it involves special workpiece materials, so why not let the experts work it out.

With energy costs rising rapidly around the globe, few can afford to ignore the energy-saving possibilities that a correctly specified and configured vacuum handling system can bring. It’s time to get a grip on efficiency.

@SMCPneumaticsUK @SMCPneumatics @mepaxIntPR #PAuto #Energy

Leadership award.

Expertise, vision, information management, success, ehtical conduct, human competence and diversity: Ayla Busch had convinced the jury in all these categories and therefore received the German Leadership Award 2022.

Lars Wagner, COO at MTU Aero Engines AG, presents Ayla Busch with the award.

Source: Andreas Schwarz

“Ayla Busch is a leader with a special, with a unique style, based on appreciation, a sense of family, communication and, above all, diversity – in the fullest sense”, said nominator Lars Wagner, Chairman of the German Leadership Award jury and Chief Operating Officer (COO) at MTU Aero Engines AG.

The award was presented at the annual alumni convention of the “Collège des Ingénieurs” in Munich. In her acceptance speech, Ayla Busch explained how far back equality and diversity go in the history of Busch Vacuum Solutions: “My parents founded our company as an equal partnership back in 1963. That is unique. And even at the very beginning, we had an employee who was deaf and whom my parents supported in becoming a master craftsman.”

After a reception at the beginning of the event and before he handed over to laudator Lars Wagner, Prof. Hans-Peter Mengele, Chairman of the sponsoring association of the German Leadership Award, explained its significance to the approximately 200 invited guests: “The German Leadership Award is a particularly authentic award for innovative corporate leadership in the German economy. It is sponsored by the network of German alumni of the ‘Collège des Ingénieurs’. The engineers and scientists from the ‘Collège des Ingénieurs’ are among the excellent leaders of the next generation.” Since 2014, these young leaders nominate every year personalities for the German Leadership Award who are role models for them.

After the ceremony, Ayla Busch exchanged views with former award winners in a round table discussion. Afterwards, the participants of the event had the opportunity to network and taste Bavarian delicacies.

@MTUaeroeng #Busch #PAuto 

Innovation in vacuum recognised.

The company Climeworks has been awarded with the Innovation Award by Busch Vacuum Solutions for its advanced use of vacuum technology. Climeworks is the first company to use Direct Air Capture technology to remove carbon dioxide from the atmosphere. In this way, the company is actively making an important contribution to reducing global warming.

Climeworks and Busch have a close partnership from the beginning. Climeworks has now been awarded the "Innovation in Vacuum Busch Award 2021" for its innovative use of vacuum technology in CO₂ removal. Managing Director and founder of Climeworks Jan Wurzbacher accepted the award together with other representatives of the company during a small ceremony at the headquarters of Busch Vacuum Solutions in Maulburg (D).

In these unique plants, MINK claw vacuum technology from Busch is used to filter CO₂. Busch presents the "Innovation in Vacuum Busch Award" once a year. This award honors individuals or companies that make use of vacuum technology with particularly innovative ideas and thereby serve the well-being of people and the environment. The "Innovation in Vacuum Busch Award" was first presented in 2013 on the occasion of the 50th anniversary of Busch Vacuum Solutions.

The rise in temperature caused by climate change can only be limited by restoring a healthy balance in the CO₂ content of the atmosphere. This can only be realized if both current emissions are drastically reduced and unavoidable emissions that have already been emitted are removed from the air.

Using Climeworks' Direct Air Capture technology, CO₂ is filtered directly from the air. CO₂ collectors selectively capture carbon dioxide in a two-step process. First, air is drawn into the collector by a fan. The carbon dioxide is captured on the surface of a highly selective filter material located inside the collectors. After the filter material is filled with carbon dioxide, the collector is closed, and the temperature is raised to 80 to 100 °C - releasing and capturing the pure carbon dioxide. The filtered CO₂ is extracted using MINK claw vacuum pumps from Busch.

It is then mixed with water and injected underground into basalt rock by Climeworks' partner Carbfix. Over a period of a few years, the CO₂ mineralizes itself and is thus permanently and safely removed from the atmosphere and converted back into rock underground. Climeworks' technology is powered exclusively by renewable energy or waste heat, and the modular collectors can be combined to create systems of various sizes.

@Climeworks #Busch #Climate

Using advances in vacuum measurement technology.

In process engineering, the exact observation of pressures in vacuum-assisted processes is an important parameter for ensuring optimum efficiency and the best possible product quality. 

VACTEST vacuum measurement equipment from Busch is designed to combine the latest advances in vacuum measurement technology with exceptional manufacturing quality - providing an innovative and comprehensive portfolio of active vacuum gauges and controllers. This makes it possible to match the right measurement technology to each and every process.

Robust construction, reliability and measurement accuracy are key features of these devices, making them the ideal choice to monitor and control your vacuum process, whether it is in industry or research. These state-of-the-art technologies allow a wide measurement range from 1600 to 5 10-10 millibar covering all vacuum levels with accuracy. All sensors comply with international standards and regulations such as CE and RoHS.

A number of different sensor technologies in the VACTEST series cover the entire range between rough vacuum and ultra-high vacuum. They can basically be divided into two main categories: direct and indirect pressure measurement. The direct measurement principle is independent of the process gas and is based on the pressure that the molecule flow exerts on a membrane. This method is mainly used for rough and medium vacuum processes. At a higher vacuum level, indirect measurement principles are used, based on special properties of the process gas, such as thermal conductivity or ionization probability. Unlike the direct measurement method, these principles depend on the type of process gas. For this reason, a specific correction factor must be applied for each process gas - except for air and nitrogen.

A number of factors must be taken into account when selecting the correct sensor. In addition to the process and ambient conditions, the pressure range, required accuracy and gas composition play a key role in achieving optimum measurement results. With three product lines available, Busch VACTEST meets accuracy, measurement range and functional requirements of every vacuum system or process.

VACTEST digital transmitters are high-end gauges coming with a full range of options as standard. Their intelligent micro-controller architecture allows for optimum sensor control, as well as many setting options, making them the ideal solution for a variety of applications. VACTEST digital transmitters are based on Pirani sensor technology or on combinations of Pirani / cold cathode or Pirani / hot cathode technologies.

VACTEST analog transmitters feature a compact, rugged and functional design. Thanks to their excellent measurement accuracy and stability, these transmitters are ideal for centralized monitoring and control systems.

VACTEST mobile gauges are the perfect hand-held solution for quality assurance with vacuum processes and maintenance. These battery-operated gauges offer various functions, such as a USB interface for data export and display, as well as a data logger. They can even be used under vacuum. For example, these gauges can be sealed in vacuum packaging to measure the pressure within the packaging.

VACTEST active sensor controllers, which are compact control units designed for the simultaneous operation of several vacuum gauges, round off the product series. Used either as a table-top device or rack-mounted, they allow intuitive menu navigation and ensure full control of each transmitter. Parameters, such as gas type correction factor, pressure units, setpoints and other beneficial functions are easily adjustable.

In addition to the measuring devices, the VACTEST Vieweris also available. It is a free Bluetooth monitoring application for mobile devices with an Android operating system. It can be used to display the pressure values ​​of up to 16 connected sensors. The tool was designed for Bluetooth data exchange between software and sensors and is ideally suited for maintenance and calibration purposes. Visual and sound alarms can be preset for maximum and minimum pressure values.

@PresseBox #Busch #PAuto 

Pressure and vacuum switches.

PVL has announced the availability of a new series of pressure and vacuum switches with integrated EUROSWITCH S.p.A. connectors.

Steve Moorey, MD of PVL, says, “This new series of sensors can not only be supplied with a wide range of integrated EUROSWITCH connectors to suit many applications but can be readjusted on site during commissioning or if system requirements later change, even when potted for protection from the environment.”

These new products not only offer a wide range of integrated connector options but also provide the opportunity to be adjusted or recalibrated even with the connector mounted and potted for rugged weatherproofing. This allows adjustments to be made at the final stage of the production process or directly at the customer's site during system commissioning.

This innovative system has been developed in-house in Euroswitch laboratories and is designed to allow a fast, accurate and efficient installation of the connector chosen for the sensor. Currently these sensors can be equipped with Deutsch DT04-2P, AMP Superseal and M12x1 connector or AMPJunior Timer and bayonet according to DIN 72585, offering protection levels between IP67 and IP69k.

In common with all Euroswitch products, these pressure switches and vacuum switches are available with numerous body, diaphragm, process connection and wiring variants.

They are particularly suitable for "hard" applications, where they are exposed to moisture, water ingress, dust and mud, for example, in hydraulics, pneumatics, earthmoving, agricultural machinery or public works, as well as numerous other sectors.

@pvllimited @Euroswitch_NA @proactivefleet #Pauto 

Mini vacuum pumps.

Coval´s new LEMAX IO series of mini vacuum pumps with IO LINK communication integrate all the required functions for optimized vacuum management in a compact package. Via their IO-Link communications interface, the mini vacuum pumps communicate permanently with the environment and thanks to ASC (Air Saving Control) technology, combine productivity with energy savings, adapting to a multitude of applications in packaging, robotics or plastics processing. Without needing extra peripherals, these all-in-one mini pumps are fully compatible with Industry 4.0 automation.

IO-Link, simplified communication
The IO-Link interface ensures efficient real-time communication between LEMAX IO vacuum pumps and all the higher-level protocols (Ethernet/IP, PROFINET, EtherCAT, etc.) used for supervising the production line. IO-Link enables continuous diagnostics, centralized programming and pump control. The availability of real-time diagnostic status data makes it possible to optimize production. In addition to fast and cost-effective installation, preventive maintenance is easier and the replacement of vacuum pumps does not require reconfiguration.

Energy savings
ASC technology, which ensures intelligent vacuum control by stopping air consumption when the set vacuum level is reached, generates energy savings of between 75 and 99% depending on the application. In addition, ASC analyses the application and adapts to either impermeable or porous parts to optimize operation and energy consumption.

Compact size and light weight
Compact in size, the LEMAX IO pumps have all the principal functions integrated in a single module: pressure regulation, solenoid valves, anti-clogging open silencer, electronic vacuum switch, M8 connector (direct Plug & Play connection) and adjustable blowing. Their reduced size and weight (130 g) allow the suction cups to be positioned at minimum distance to achieve the shortest possible grip time without load loss.

Modularity
The LEMAX IO can be adjusted to the needs of integrators and users. They are available in three nozzle diameters (1, 1.2, 1.4 mm) allowing a suction flow rate from 29 to 70 Nl/min (max. vacuum 85%). They are optionally equipped with a normally closed (NC) or normally open (NO) solenoid valve. This variant is recommended for applications where gripping the workpiece must be guaranteed in case of an unexpected power failure, or even if leakage occurs (positive safety).

Several LEMAX IOs can be combined in an island with a single pressure supply.

@COVAL_SAS @mepaxIntPR #PAuto #Industry4

Vacuum transducer evaluation kit.

An evaluation kit for the Posifa Technologies PVC4000 series of digital MEMS Pirani vacuum transducer is now available. This promises to disrupt the portable vacuum gauge market by enabling low-cost, easily replaceable sensor probes that can be switched without requiring the vacuum gauge itself to be recalibrated, since all the calibration data is stored within the probe itself.

The PVC4000EVK evaluation kit announced today allows OEMs to quickly test drive Posifa's MEMS vacuum sensing technology for digital vacuum gauge and related applications. The PVC4000EVK kit consists of a PVC4000 transducer packaged in a brass housing with a 1/4 SAE male flare fitting, or a stainless steel housing with a KF16 fitting that allows it to be installed into any vacuum environment for quick evaluation. The PVC4000 transducer in the kit is calibrated and provides a digital output in microns. The kit's PC-based diagnostic software gives users access to different sensor readings and configuration data stored in the transducer.

"With the PVC4000EVK, vacuum gauge OEMs can find out in an hour's time what our digital Pirani vacuum sensor technology can do to help them offer customers more flexible and versatile end products that build brand loyalty," said Peng Tu, president and CEO at Posifa Technologies.

The PVC4000EVK's sensor element is based on Posifa's second-generation MEMS thermal conduction chip, which operates under the principle that the thermal conductivity of gas is proportional to its vacuum pressure. The transducer's microcontroller-based measuring electronics amplify and digitize the senor's signal, providing a digital output via an I²C interface.

The MEMS Pirani vacuum transducer included in the evaluation kit is calibrated for the vacuum range between 1 micron and 760,000 microns. Through the transducer's digital I²C interface, the user can access the sensor's raw output as well as the calibrated vacuum reading. The evaluation kit includes a custom wire harness that connects the sensor and the I²C to a USB adapter board, allowing the user to read sensor data from a PC in minutes.

#PosifaTech #Pauto 

Vacuum Transducer for OEMs.

Device Packages a MEMS Pirani Sensor and Microcontroller-Based Measuring Electronics in a Compact PCB Assembly

Their new PVC4000 series MEMS Pirani vacuum transducer has been announced by Posifa Technologies. Designed for cost-effective OEM integration, the device consists of a surface-mount MEMS Pirani sensor and microcontroller-based measuring electronics — all packaged in an ultra-compact PCB assembly featuring a connector-terminated wire harness.

The PVC4000's sensor element is based on Posifa's second-generation MEMS thermal conduction chip, which operates under the principle that the thermal conductivity of gas is proportional to its vacuum pressure. The transducer's microcontroller-based measuring electronics amplify and digitize the senor's signal, providing output via an I²C interface. The interface also allows users to store calibration data in the microcontroller, which is utilized by a built-in piecewise linearization algorithm to provide calibrated output.

To compensate for variations in thermal conductivity due to changes in ambient temperature, the PVC4000 features a temperature compensation algorithm, which takes its input from a built-in temperature sensor. In addition, a pulsed excitation scheme, in which the sensor chip is heated for about 100 ms and then turned off for one second, prevents signal drift due to self-heating, and also reduces the power consumption of the transducer.

The transducer released today is ideal for digital vacuum gauges. For these applications, the device combines low power consumption with extremely fast response times of >1.2 s and a wide effective range from 1 millitorr (0.13 Pa) to 1 atm (760 torr, or 101 kPa). Readers may contact Posifa to discuss options for customizing the transducer's specifications.

#Posifa #PAuto #OEM 

Environmentally sealed pressure switch.

The the World Magnetics Company's DesignFlex™ PSF111 series environmentally sealed pressure/vacuum switch, available for Europe through Variohm EuroSensor, is designed for challenging switching tasks where dust and water ingress prevention is essential. The waterproof snap-action switch suits pressure and vacuum configurations with switching ranges from -822 to 4137 mbar (-11.9 to 60 psi) and is available in a wide choice of port configurations and mounting options.

With a moulded polycarbonate housing and encapsulated electrical components, the PSF111 also features field adjustable pressure and vacuum set points - and with a polyurethane diaphragm as standard and optional Teflon material, the switch is suitable for most common pneumatic and fluid systems. The standard current rating across the series is 3 A with 4 A available on request. The operating voltage is 12 VDC / 125 VAC and the temperature range is -40 to + 85 °C. The compact switch housing typically measures approximately 25 mm in height, length and width, with a 1/8-27 threaded port connection protruding 18 mm.

As with all DesignFlex-branded series pressure and vacuum switch components, and through Variohm’s own design and production service, application customised engineering is available with modified mechanical and electrical interfacing and customer specified electrical lead lengths with connector options.

Variohm EuroSensor supports the complete range of DesignFlex pressure and vacuum switching components and accessories and is also a distribution partner for leading sensor manufacturers as well as a sensor component and sensing systems manufacturer with in house design and assembly expertise. Variohm offers complete sales and application support across a comprehensive range of position, force, pressure, load, and temperature sensor technologies for demanding measurement application solutions in industry, construction, agriculture, motorsports, research and more.

@Variohm #PAuto #World_Magnetics #mepaxIntPR 

Thermopile vacuum sensors.

Posifa Technologies has introduced the PVC3000 series of MEMS thermopile vacuum sensors. Built on the proven performance of the company's leading Pirani devices, the next-generation sensors deliver a wider effective range from 1 millitorr (0.13 Pa) to 1 atm (760 torr, or 101 kPa) to eliminate the need for additional sensing technology and to lower overall solution costs.

The upper effective range of traditional Pirani vacuum sensors is capped at around 30 torr. To measure vacuum above this value, an additional piezoresistive or capacitive pressure sensor is required. With their wide effective range, the PVC3000 vacuum sensors released today can measure vacuum to 1 atm without the need for an additional pressure sensor, allowing designers to replace two components with one in vacuum gauges for HVAC and industrial applications.

For increased reliability, Posifa has also redesigned the microstructure of its sensors to make them more robust and more resistant to pressure shock and the effects of cleaning. The company has migrated to a CMOS production platform, resulting in improved repeatability, uniformity, and scalability.

Using a differential measurement setup (one sensor for reference and one for vacuum measurement), the PVC3000 series allows for automatic internal temperature compensation and eliminates other environmental factors that can cause sensors to drift. The result is excellent repeatability and long-term stability.

Available in TO5 (PVC3001) or TO46 (PVC3004) metal cans, the devices offer extremely fast response times of < 2 ms typical and operate over a -25 °C to +85 °C temperature range. Readers may contact Posifa to discuss options for customizing the sensors' specifications.

Samples and production quantities of the PVC3000 vacuum sensors are available now. An evaluation kit is also available for testing the devices.

#PAuto #Posifa

Atlas Copco creates a Vacuum Solutions division and appoints Geert Follens as its division president

Atlas Copco Compressor Technique has established a new division: Vacuum Solutions. It will be responsible for Atlas Copco’s current vacuum business and, after the acquisition has been completed, for Edwards Group Ltd. Geert Follens, currently in charge of Industrial Air, has been appointed its division president.

Geert Follens

“We have defined vacuum as a strategic growth area for Atlas Copco and with this new division we have created a good structure from which to successfully develop the business after the Edwards acquisition,” said Stephan Kuhn, President of the Compressor Technique business area. "I am pleased to have Geert Follens, who has a proven record in running different businesses with different challenges, on board as division president. He has been leading the Edwards acquisition team and has already a solid knowledge of the vacuum business.”

The Vacuum Solutions division will initially be in charge of Atlas Copco’s current vacuum business; for the whole value chain from product development, sourcing, and production, to sales and service. When the acquisition of Edwards is completed, the company will be included in the new division. Vacuum Solutions will be based in Crawley (GB).

Geert Follens joined Atlas Copco in 1995 as purchasing manager in the Industrial Air division. His responsibilities were later extended to include production in the capacity of flow manager. In 2000 he became general manager of the customer centre Atlas Copco Compressors Ltd., Great Britain. In 2004 he was appointed division president for the Portable Energy division and in 2012 he became division president for the Industrial Air division. Both divisions are based in Belgium. Geert Follens holds a Master of Science in Electrical Engineering and Power Generation from the University of Leuven, Belgium.

Innovative vacuum generator module features energy-efficient air-saving function

Festo has launched a highly innovative vacuum generator module equipped with a host of built-in energy-saving and condition monitoring functions. One of the key features of the new OVEM vacuum generator is an integrated vacuum sensor, which continuously monitors the output; the module will operate until a user-defined vacuum threshold has been reached, and then automatically switch off, resulting in significant energy savings. A built-in non-return valve ensures that in normal use, vacuum loss is limited to air leakage between the suction cup and the workpiece; the generator will automatically turn on again if the vacuum drops to a second user-defined vacuum threshold.

Their OVEM vacuum generators use the venturi principle to create a vacuum, employing a de Laval nozzle to accelerate airflow across the top of the evacuation tube. They are designed for use with standard 40 µm filtered compressed air supplies, with efficiency-optimised flow characteristics to reduce energy consumption. The generators are available in high vacuum and high suction rate versions, and offer a choice of 5, 7 and 10 mm de Laval nozzles to accommodate a variety of vacuum flow rate requirements and different porosities of workpiece materials.

As well as helping to save compressed air, the OVEM generator’s vacuum sensor provides continuous system monitoring and diagnostic functions. Any gradual or sudden loss of vacuum, or any lengthening of vacuum evacuation time, is detected automatically and an electrical signal fed back to the system’s controller. This information can be used for preventive maintenance purposes, to minimise machine downtime and ensure process reliability.

All user-defined operating parameters – including upper and lower vacuum thresholds, normal vacuum evacuation time and overall system cycle time – are set up using the pushbuttons and LCD screen on the front face of the vacuum generator module. The 4-character alphanumeric LCD is backlit and features analogue and numeric displays which enable the relative pressure, or vacuum, to be seen at a glance. Users can choose to display the vacuum level in inchHg, inchH2O or bar – whichever is most meaningful for their application.

The OVEM vacuum generator module features two fully integrated solenoid control valves – one for switching its compressed air supply on and off to generate the vacuum, the other for activating an ejector pulse. The ejector pulse helps speed cycle time by quickly dissipating the vacuum when the generator is turned off, enabling the workpiece to be released using a quick ‘blip’, instead of having to let the suction cup and associated air pathway slowly come back up to full atmospheric pressure. A flow control screw is provided for adjustment of ejector pulse flow.

Festo’s OVEM vacuum generators are very easy to install and maintain. All pneumatic connections employ push-in QS fittings, and all electrical connections are made via a single 5-pin M12 plug. The solenoid valve for vacuum on/off can be controlled by a normally-closed or normally-open switch, and there is a choice of six different configurations for the vacuum sensor’s electrical switching output, to further simplify system integration. The generators require very little in the way of maintenance; an open silencer and integrated air filter prevent internal contamination, and a built-in viewing window facilitates filter inspection without having to remove the module from the system.

Venturi based vacuum generators can be extremely effective, speeding up cycle times and operating reliability. To ensure that they are energy efficient they need to be selected according to the demands of the application; the size, mass and porosity of the item to be picked, as well as the forces resulting from the planned movement, are all factors which influence this choice. Festo’s vacuum selection software is now available free of charge, to shorten the calculation time in selecting the right unit for each application.

Practical Vacuum at Advanced Manufacturing UK

We mostly visit the mtec and Machine Building at the Advanced Manufacturing show in Birmingham (GB) but there are aspects of the other co-exhibitions there which may be of interest the automation professional.

The level of technology available at this year’s Practical Vacuum exhibition is a case in point, the principal event for all aspects of vacuum technology demonstrates how vacuum professionals can benefit today – and tomorrow – from modern advances.

For example:

Bronkhorst will focus on its new Cori-Fill technology for compact, single point responsibility, dosage/filling liquid delivery systems. This is an extension of the company’s range of small compact mass flow meters and controllers based on the Coriolis principle. Visit the stand to learn about the considerable features and benefits. They will also display the new release Mass Stream mass flow meter/controller based on thermal principles, and the new releases of Gas-View and Liqui-View flow-meters utilizing vortex technology.

Edwards-Precision Plus Vacuum Parts, one of the world’s largest independent manufacturers of vacuum pump replacement parts, can supply vacuum filters, replacement parts, repair kits, KF fittings, oils (FDA approved), rotors, stators, plates and shafts, for example, for anything from a minor repair to a complete pump rebuild, and they stock ready-to-ship parts for virtually all major OEM pump models.

Kurt J. Lesker Co is a full service manufacturer and distributor of deposition and vacuum systems, components and materials including vacuum systems, deposition sources, sub assemblies, materials, hardware, feedthroughs, pumps and fluids. On show, for example, will be the PVD 75 deposition tool for the budget-conscious researcher; and the new Spectros family systems which, along with the firm’s PVD applications laboratory, is available for continued customer support and demonstrations.

At the Trumpf stand, there will be a focus on the company’s prowess in the field of DC, MF and RF power supply technology.

The Read-out Signpost will be visiting the show on the first day 27th April 2010. Watch out for us!

Non-contact measurement

Worlds best vacuum seals tested but not touched

TorqSense, a non-contact digital torque monitoring system that could guarantee an infinite lightness of touch, from Sensor Technology, has proven to be the only way to test the seals of super high performance vacuum systems.

The ultimate fields of precision manufacture, such as electronics, biophysics and thin film deposition where tolerances are measured in atoms, are often conducted in hard vacuum to remove airborne contaminants and avoid the performance reducing effects of tiny air movements.

However the vast majority of vacuum chamber designs require seals for rotary drive shafts (called rotary feedthroughs) and ‘feedthroughs’ for the passage of materials, components, tools and finished products. In high vacuum applications conventional seals are unlikely to be able to achieve the performance specifications required, so magnetic fluid seals are used.

A ferrofluid is a stable colloidal suspension of sub-domain magnetic nano particles in a liquid carrier. The particles, which have an average size of about 100Å (10 nm), are coated with a stabilising dispersing agent (surfactant), which prevents particle agglomeration even when a strong magnetic field gradient is applied to the ferrofluid.
With over thirty years of experience producing seals for the world's most demanding applications, Ferrotec of Woolwich in London (GB) is able to optimise ferrofluid materials for the most extreme performance requirements and incorporate them into bespoke vacuum system designs.

“About half of our work is to bespoke design,” says Jeff Lewcock of Ferrotec, “and we have to test every seal to the nth degree to meet out customers specifications. To test the feedthrough it is mounted onto a vacuum chamber that is connected to a helium leak detector. Helium is then spayed onto the feedthrough and the leak rate observed during static and dynamic running.

As part of the test the starting and running torque of the seal are measured and the power loss through the seal is calculated. These readings allow Ferrotec to troubleshoot the individual seal, analyse the design’s performance and add to their knowledge base.

“With the sort of tolerances we work to we needed a torque sensor that didn’t add any extra drag to the whole seal mechanism, so we were delighted to discover Sensor Technology’s non-contact TorqSense,” says Jeff.

Inside TorqSense torque sensors two tiny piezo frequency resonating combs are fixed to the shaft and supplied with power via a radio signal. The combs ‘opens up’ as torque is applied to the shaft changing their resonating frequency. Thus, the resonant frequency of the returning radio signal is an indication of the torque within the seal.
A wireless radio frequency non contact radio frequency coupling is used to supply power and interrogate the combs. Because it is non-contact the TorqSense torque sensor exerts no drag on the test piece whatsoever, and as it is fundamentally a digital system it has a broader signal bandwidth than other analogue based technologies and electromagnetic interference is eliminated making it an ideal solution for Ferrotec’s needs.