Bronkhorst High-Tech BV, Pionier auf dem Gebiet der Messung geringer Flüssigkeitsmengen, hat eine neue Generation von digitalen Masseflussmessern oder -reglern für kleinste Bereiche vorgestellt.

Bronkhorst High-Tech BV, Pionier auf dem Gebiet der Messung geringer Flüssigkeitsmengen, hat eine neue Generation von digitalen Masseflussmessern oder -reglern für kleinste Bereiche vorgestellt. Der u-FLOW Serie L01 kann Durchfluss-bereiche ab 25 bis 500 Nanoliter pro Minute messen oder 75 bis 1.500 Nanoliter pro Minute regeln - größere Messbereiche sind möglich. Als medienberührtes Material dient SS316, alternativ ist PEEK oder Fused Silica möglich.

Das neue Sensordesign hat ein sehr geringes Totvolumen von 1,5....20 microL (SS316 Sensor), abhängig vom Messbereich.

Der u-FLOW bietet Analogsignale 0 bis 5/10 Vdc oder 0/4 bis 20 mA - und digitale Anbindung über RS-232 als Kommunikationsschnittstelle.

Optional ist eine interne Feldbus-Schnittstelle mit Profibus-DP, DeviceNet oder Modbus möglich.

Das Instrument ist für unterschiedliche Anwendungen im Labor, für die Flüssigchromatographie (LC/HPLC) und die Dosierung von Additiven einsetzbar.

Flotech Solutions will be showing their range of flow sensors and flowmeters at MTEC 2005, including a fully working demonstration of the Brooks thermal mass flow meters and controllers.

Flotech Solutions will be showing their range of flow sensors and flowmeters at MTEC 2005, the Sensors, Measurement and Instrumentation Exhibition taking place at the NEC February 16-17: the stand will include a fully working demonstration of the Brooks thermal mass flow meters and controllers, for you to see the electronic performance alongside the visual indication available from the Brooks range of glass tube variable area flowmeters. Quantim, the most accurate low flow liquid Coriolis flowmeter/controller available today, will also be shown. The Flotech Solutions stand at MTEC can only show a small portion of their extensive flow range, which covers most of the known measurement technologies available.

A new Product Selection Guide has been produced to describe the range fully, and is available from Flotech in Stockport, or can be downloaded from the website.

The new ST75 offers a new price-performance standard for engineers and technicians tasked with improving small line size gas and air flow measurement and control for industrial processes.

Engineers and technicians tasked with improving small line size gas and air flow measurement and control for industrial processes will find the new ST75 Series Flowmeter from Fluid Components International sets a new price-performance standard by offering a simple and more reliable solution at the lowest cost in its class. Blending high accuracy with extensive features, the ST75 Series Flowmeter measures and monitors air or gas flows in line sizes from 0.25 to 2.0 inches (6 to 51mm) with a single instrument and provides three unique outputs of the mass flow rate, totalised flow and media temperature. Combining a non-clogging, small-size thermal dispersion sensing element with sophisticated microprocessor-based electronics and precision calibration, the ST75 Flowmeter delivers fast, direct mass flow measurement without the need for any other sensors to reduce installation complexity and eliminate maintenance scheduling.

The ST75 Flowmeter is available in nine different line size configurations between 0.25 and 2 inches (6 to 51 mm) in standard T-fittings, either NPT or tube, for quick, easy in-line installation.

It services a wide flow range, from 0.008 to 839 SCFM (0.013 to 1425 NCMH) depending on line size, which makes it equally well suited for low flow and high flow applications.

The ST75 provides excellent +/-2% of reading accuracy with +/-0.5% repeatability and includes media temperature compensation to ensure performance in typical industrial environments.

Standard outputs are fully scaleable 4-20mA and 0-10V that are user assignable to flow rate and/or temperature and a 0-1kHz pulse output of total flow.

The instrument can be ordered for powering by 24Vdc or 115/230VAC and with or without a built-in LCD digital display.

The ST75 Flowmeter was developed to be the lowest cost, small-line mass flow solution for use in processes flowing natural gas, methane, other fuel gases, combustion air as well as oxygen, nitrogen and all inert gases and compressed air.

It is ideal for use in fuel and air feed lines to furnaces, burners, industrial ovens, heat treating systems, boilers, and power co-gen equipment found in a wide variety of manufacturing and process industries.

In compressed air distribution lines, where significant energy cost savings can be realized by improving efficiency of compressors, the ST75 accurately measures actual air flow and is sensitive enough at low flows to signal leakage.

Designed with the FCI proven thermal dispersion sensing technology, the ST75 rugged sensing element features 316 stainless steel construction with Hastelloy-C tips.

Its no-moving parts design ensures superior service life.

There are also no orifices or inlets to clog or foul, which significantly reduces scheduled maintenance and eliminates unplanned shut-downs.

The ST75 is an ideal replacement for differential pressure, orifice plate, turbine and vortex technology meters in rugged or dirty plant environments.

The ST75 is enclosed in a rugged, all-metal, dust and water resistant, NEMA Type 4X (IP66) rated package that is designed for hazardous area installation in Groups B, C, D, E, F, G and Eex d IIC environments.

Whether adding flow sensing to improve a process or replacing poorly performing or high-maintenance flowmeters, the ST75 provides an accurate, fast response and low-maintenance solution to small line size industrial gas and air flow applications.

Serving critical process instrumentation needs worldwide, ISO 9001 certified FCI is the world's leading manufacturer of thermal-dispersion flow and level measurement instrumentation for industry.

Bronkhorst, the liquid and gas mass flow control specialists, are attending Exhibitions around the World, at MTEC and Practical Vacuum in the UK, at Pittcon in the USA, and at Interkama in Germany.

Bronkhorst, leaders in the electronic measurement and control of gas and liquid mass flow, are attending Exhibitions around the World over the next few months. First, in the UK, Bronkhorst will have a stand at the Practical Vacuum Exhibition, in Hall 11 at the National Exhibition Centre near Birmingham. This is one of ten co-located exhibitions taking place from February 16-17 at the NEC: look for Bronkhorst on Stand E12, which is between the Practical Vacuum and the MTEC Exhibitions, making for easy access for visitors from both.

The Bronkhorst El-Flow thermal mass flow meters and controllers for gases will be on show together with similar products for pressure control, the El-Press range.

Also see the Cori-Flow, a Coriolis based liquid and gas mass flowmeter/controller, the Liqui-Flow MFC (Mass Flow Controller) for liquids, and the patented CEM (Controlled Evaporation and Mixing) System for precise vapour generation, used in humidification, vapour deposition, gas analyser testing, and other accurate vapour control duties.

Later, in the USA, Bronkhorst will bring these products to North America to present them at Pittcon, in Orlando, Florida from February 28 to March 3.

See us on Booth 3301.

The new versatile DM family of digital readouts digitally displays flow rate, totalised flow and temperature readings from the FCI popular ST and GF Series thermal-dispersion mass flowmeters.

The new versatile DM family of digital readouts from Fluid Components International (FCI) digitally displays flow rate, totalised flow and temperature readings from the FCI popular ST and GF Series thermal-dispersion mass flowmeters. A choice of three different meters is designed to meet a wide range of installation locations and process requirements. Installed near the pipe, these meters can be used with blind flow transmitters as their readout, or with integral display flowmeters as a remote mounted additional display, or as an auxiliary display mounted anywhere along a flow control loop.

The Model DM10 display is a loop-powered LCD readout meter, which can be inserted anywhere in the flowmeter 4-20 mA output loop.

It requires no separate power source as it relies on the 4-20 mA output loop power.

The DM10 is scalable to +1999 digits and features oversized 1-inch (25mm) high characters for easy viewing.

It is sized at 3.15 (h) x 5.51 (w) x 2.56 (d) inches (80 x 40 x 65 mm).

The standard configuration is wall mountable, with optional panel or pipe mount kits available.

Wiring is to screw terminals via a standard 0.5 inch conduit hole at the bottom of the case.

The DM10 is also available in FM and CSA approved versions for installation in hazardous areas requiring approvals.

The Model DM15 display is a high accuracy, AC-line powered meter with a bright red LED readout.

The DM15 features a user, push-button scalable +9999 digit display and will accept either the 4-20 mA or 0-10 Vdc output signals from any FCI Flowmeter.

A user programmable alarm set-point with a Form C relay output also is available as an option.

The DM15 fits a standard 1/8 DIN cutout [1.89' (h) x 3.78' (w) x 5.35' (d); 48-x-96-136 mm] for easy panel mounting.

Universal screw terminals are located at the rear for hook-up to sensor and power wiring.

When used with the FCI ST50 or ST75 Series multi-variable flow meters, which feature dual analogue outputs, two DM15 units can be mounted together for simultaneous display of the fluid flow and temperature.

The Model DM20 is a miniature, panel-mount 8-digit (0 to 99999999 counts) flow totaliser.

It accepts the pulse output from the FCI ST50 and ST75 Series Flowmeters for a local or remote digital readout of total flow.

The DM20 features a reset line, which can be activated via a front-panel push-button or via a contact closure to rear-mounted screw terminal block.

It is self-powered with a 10-year lithium battery (included) and can be easily mounted in a separate enclosure or control room.

It is sized at 0.944 (h) x 1.89 (w) x 1.20 (d) inches (24 x 48 x 30.5 mm).

The DM Series of remote displays is designed for use with the popular FCI ST and GF Series flowmeters.

These flow meters provide direct mass flow measurement of air, fuel gases and process gases.

The series includes six different insertion and inline style models: the ST98, ST98L, ST50, ST75, GF90 and the GF92.

Each of these popular meters is designed for precision air/gas flow measurement in a wide range of rugged plant applications found in the demanding process and manufacturing industries including chemical, oil/gas, wastewater treatment, power utilities, food/beverage, heat-treating, metalworking, pharmaceutical, pulp/paper, and others.

Blending superior accuracy over a wide flow range with high repeatability, the rugged FCI Flowmeters are available in a broad range of configurations, including high-speed, high temperature, high pressure, low flow, large line sizes, small line sizes, sanitary, DC or AC powering, and for virtually any gases.

Their precision thermal dispersion mass flow measuring technology design is inherently temperature compensated and is virtually drift-free.

Installation requires only simple tools and can be done by a single technician.

These flowmeters are a no-moving parts design, which means that the FCI thermal-dispersion flowmeters require almost no maintenance.

FCI flowmeters are the right choice whenever accuracy, reliability, durability and lowest lifecycle costs are a primary consideration in air or gas flow measurements Serving critical process instrumentation needs worldwide, ISO 9001 certified FCI is the world's leading manufacturer of thermal-dispersion technology flow and level measurement instrumentation for industry.

Since 1964, the company has provided a broad range of liquid, gas and slurry flow/no flow detection, flow meters, liquid level interface, flow conditioning and more.

Fluid Components International is a global company committed to meeting the needs of its customers through innovative solutions to the most challenging requirements for sensing, measuring and controlling flow and level of air, gases and liquids.

Litre Meter has announced the release of the Sierra Instruments Smart-Trak Series C100M digital mass flow controller (MFC) for larger gas flows - at flow rates up to 200 slpm.

Litre Meter has announced the release of the Sierra Instruments Smart-Trak Series C100M digital mass flow controller (MFC) for larger gas flows. Smart-Trak offers end-users and OEM customers maximum flexibility, an easy-to-use interface, rugged stainless-steel construction, and true digital performance - now at flow rates up to 200 slpm! Smart-Trak demonstrates incredible quality and performance because it was designed so the physics are correct. This means a patented, inherently linear design with no curve fitting.

The result is a pure 1% accuracy and unsurpassed stability over the entire flow range, even in multiple gases.

The unique Dial-A-Gas feature and convenient Pilot Module interface easily change critical parameters in the field without sacrificing performance.

The Smart-Trak microprocessor is programmed for ten gases that are commonly used in biotech, pharmaceutical, analytical, and research applications.

Other gases may also be specified to create a custom instrument.

For remote monitoring and OEM applications, Smart-Trak also provides an RS232 output and a choice of four user-selectable analogue outputs.

Each Smart-Trak is scrutinised for a minimum of 2-weeks with our proprietary computerised characterisation process to assure every instrument is of the highest possible quality, will have no drift, and will remain in spec over the long-term.

The Smart-Trak small footprint permits easy drop-in replacement for any mass flow controller.

The original low flow size (for flow rates up to 50 slpm) is 3 x 1 x 5 inches while the new larger size (for flow rates up to 200 slpm) measures 4.5 x 1.5 x 6 inches.

The all-stainless steel instrument is custom-made for every application in any range from 0-10 sccm to 0-200 slpm full-scale.

The ST98 Flow Meter is for high purity process applications requiring precise gas flow measurement: it features a 316L stainless sensor element with an all-welded, electro-polished wetted surface.

High purity process applications requiring precise gas flow measurement will benefit from the FlexMASSter ST98 Flow Meter Series from Fluid Components International, which features a 316L stainless steel thermal mass flow sensing element with an all-welded, wetted surface in a 10 or 15 Ra electro-polish finish. Designed for demanding sanitary process applications in food, beverage, pharmaceutical, biotech, and chemical plants, the new ST98HP and ST98UP flow meters support a wide range of gas flow measurement applications. They provide precise and repeatable gas flow measurement for high purity gas lines (eg, CO2 and others), pill coater air flow monitoring, CIP and SIP flow and temperature monitoring, condenser/evaporator flow control, scrubber gas discharge monitoring and more.

The ST98HP High Purity/Sanitary flow meter features a 15 Ra electro-polish finish with a 1-inch sanitary flange mated to a 316L inline flow tube.

The ST98UP Ultra High Purity flow meter comes with a 10Ra electro-polish finish with a 1 inch VCR connector mated to a 316L inline flow tube.

The 316L flow tube is available with butt weld or sanitary flanged end process connections.

The ST98HP and ST98UP flow meter has an advanced thermal mass sensing element delivering precision flow and temperature measurement over a wide flow range.

It features an accuracy of +/-1% of reading plus +/-0.5% of full scale.

Highly consistent, the ST98 has a repeatability of +/-0.5% of reading.

Exceptionally versatile, the ST98 features a wide flow range from 2.0 to 3183 SCFM [3.4 to 5409 NCMH] in air at standard conditions for 70F [21.2C] and 14.7 psia, typical to most gases.

The ST98 offers low-flow sensitivity yet is able to operate from 10:1 to 100:1 turndown ratio.

The ST98 thermal mass sensing element is comprised of two all-welded 316L stainless steel thermowells that protect two matched platinum precision resistance temperature detectors (RTDs).

With a highly reliable no-moving parts design, one RTD is heated relative to the reference RTD, and the temperature difference between the two is related to the process gas mass flow rate.

The ST98 transmitter converts the differential temperature to a standard 4-20 mA output signal that has been linearised during the FCI factory NIST traceable calibration of the flow element.

The transmitter with its RS232 communications port is housed in a NEMA Type 4, Type 4X (IP66), or explosion-proof enclosure and can be integrally mounted to the flow element or remotely mounted up to 500 feet away.

In addition, HART and Profibus digital communications and an LCD display screen indicating flow rate, temperature and totalised flow are available as options.

Fluid Components International is a global company committed to meeting the needs of its customers through innovative solutions to the most challenging requirements for sensing, measuring and controlling the flow and level of air, gases and liquids.

Bronkhorst thermal mass flow controllers take an essential role in fuel cell research projects: these units have been used to check the fuel consumption on the BOC Ech2o fuel cell powered vehicle.

Bronkhorst thermal mass flow controllers are taking an essential role in the many current fuel cell research projects. These power sources typically use hydrogen gas as the fuel and produce an electrical power output. Bronkhorst El-Flow and IQ+Flow systems are ideally suited to accurate measurement of the low gas flows needed, and with the integral valve can accurately control the flow of gas at the required rate - as defined by an analogue or digital signal from the fuel cell control system.

Recently displayed at the I Chem E Congress in Glasgow, the BOC Ech2o hydrogen fuel cell powered vehicle has been designed to demonstrate fuel efficiency.

Ech2o is a joint development project to make an attempt to break the world fuel efficiency record, currently held by a Swiss vehicle at the equivalent of over 10,000mpg (5385 Km/Litre).

Several UK organisations are involved: BOC designed the hydrogen storage system; OSCar Automotive designed the body and running gear; and the electric power train has been developed by Oxford University.

The Bronkhorst involvement in this project has been to provide the light-weight, battery powered hydrogen mass flow meter with digital totaliser.

This system will be used by the trials assessors to determine the actual hydrogen consumption as the totaliser can easily be re-set to zero by the adjudicator before the start of each phase of the test.

Hydrogen gas flow can be determined accurately over a wide flow range and, being a mass flow measurement, it is an absolute consumption measurement, unaffected by gas density changes resulting from pressure or temperature variations.

Bronkhorst have designed the widest range of mass flow instruments available in the market today and utilise by-pass, direct measurement and chip sensor techniques as well as the Coriolis principle.

Their strengths have been proven in over 300,000 field installations whereby flows are controlled from as low as 0.02 mln/min up to 11,000 m3/hour, air equivalent.

Bronkhorst has a full database and downloadable software programme that can provide accurate meter calibrations on other gases and gas mixtures.

The sensors, with no moving parts, are inherently safe and reliable in operation, typically supplied as intrinsically safe units for use on hazardous or potentially explosive gases.

Engineered solutions ensure that pressure drop across the instrument can be significantly less than 1 mbar.

The new IN-FLOW Mass Flow Meters are compact, modular instruments for gas flow measurement and control, that can incorporate integrated or close-coupled flow control valves, in fieldbus systems

Bronkhorst High-Tech manufactures the largest variety of thermal Mass Flow Meters and controllers for gases and liquids available on the market. The new In-Flow Series of mass flow meters are compact, modular instruments of rugged design according IP65 (dust and waterproof). They can be combined with control valves, either integrated or close-coupled, whereby gas flows are measured and controlled within the overall range of 0.2 mln/min up to 11000 m3n/h air equivalent.

The instruments are ATEX approved for use in Category 3, Zone 2 hazardous areas.

Bronkhorst High-Tech have developed their latest digital mass flow meters/controllers by following the 'multi-bus' principle.

The basic pc-board on the instrument contains all of the general functions needed for measurement and control, including alarm, totalisation and diagnostic functions.

It has analogue I/O-signals and also an RS232 connection as a standard feature.

In addition to this there is the possibility of integrating an interface board with DeviceNet, Profibus-DP, Modbus or Flow-Bus protocol.

The latter is a fieldbus specifically designed by Bronkhorst High-Tech for their mass flow metering and control solutions, and as a result of which they now have over 15 years of experience with digital communication.

Applications can be found in process control systems as for example in food, chemical and petrochemical plants.