QUANTIM Coriolis Precision Mass Flow Precise, continuous, totally process-immune measurement and control

Transcription

1 QUANTIM Coriolis Precision Mass Flow Precise, continuous, totally process-immune measurement and control

2 When Existing Flow Technologies Aren t Precise Or Reliable Enough, QUANTIM Can Replace Or Enhance Them. Pumps, weigh scales, and thermal mass instruments all have limitations. Until recently, the best technologies to measure and control small flows have had serious limitations, leaving researchers and process users little choice but to cobble together makeshift solutions to try to meet their needs. Peristaltic Pump Weigh Scale POWER SUPPLY BRIDGE FOR DT DETECTION Thermal Mass Flow AMPLIFIER BYPASS SENSOR TUBE Until QUANTIM, that is. QUANTIM is the first miniaturized Coriolis flow device that measures and controls mass addition directly, without regard to fluid properties or conditions. QUANTIM s Coriolis technology plus integrated valve and PID control bring a new level of measurement accuracy and control to critical applications that require more precision and reliability than older technologies can provide. Pumps meter volume, not mass. All pump users know that pumps operate by displacing a volume. In many cases, the mass of fluid added to a process or experiment is much more important than its volume. Equally, pump surfaces can degrade over time, further undermining assumptions that one might have made concerning the relationship between volume flow and mass flow. Finally, pumps need routine maintenance and calibration that require their periodic removal from service. Weigh scales are expensive and cumbersome. Customers who desire the measurement of precision mass addition sometimes use a scale or balance to monitor loss of mass from the supply vessel. As with all precision gravimetric techniques, the scale must be isolated from environmental influences on the measurement, such as air drafts, temperature changes, and vibration, leading to an expensive and cumbersome system. Importantly, the instantaneous mass flow rate cannot be determined or controlled with a weigh scale system, merely the average mass flow rate over time. Thermal mass can t handle process variability. Thermal mass flow devices have been used for decades in precision flow applications. For many users particularly in gas applications they work very well, provided that flow conditions are known and remain stable. But thermal devices operate on an inferred measurement which makes them susceptible to process variability. As fluid type, temperature, density, pressure or recipe changes, accuracy is reduced. Non-ideal gases, such as CO 2 and hydrocarbon gases, are very difficult to measure with any reasonable accuracy using thermal devices.

3 QUANTIM s Exceptional Capabilities Provide Better Measurement And Control Than Other Methods. Model QMBC IP40 Ruggedly constructed for the lab or the plant. QUANTIM is the perfect replacement for a laboratory device like a precision syringe pump. But it s equally at home in a process plant environment. The QUANTIM s 65ºC maximum operating temperature permits it to be used in almost any ambient environment. QUANTIM is also available in an explosion-proof enclosure for Zone 1/Division 1 hazardous areas and in an IP-65/NEMA-4X Division 2 package suitable for wash-down. Only QUANTIM permits laboratory-grade flow measurement and control in real plant/process applications. Sophisticated integral solenoid valve provides closed-loop measurement and control. Unlike other flow devices, the QUANTIM controller incorporates its own solenoid control valve and PID control for seamless continuous measurement and control. With QUANTIM, there s no need to select an external proportional control valve and design your own PID loop. Compact size fits anywhere in your lab or process. QUANTIM is so small that it fits in the palm of your hand, which means it can fit neatly into your lab, process, or OEM application. Just drop it in and it s ready to go. No calibration is required. Model QMBC IP65 Model QMBS Sensor Totally immune to fluid process changes. QUANTIM s Coriolis sensing technology is not fluid or process dependent so it provides accurate mass flow measurements across a wide range of flow conditions. The standard factory calibration assures accurate measurements regardless of fluid viscosity, density, temperature, or pressure. Simultaneous density measurement. QUANTIM automatically measures fluid density and can output the density value. Many users rely on the density information for its intrinsic diagnostic value: confirmation that the correct fluid is flowing, detecting the presence of entrained gas, or detecting the interface between two fluids.

4 QUANTIM Application Versatility Chemical Catalyst Research Catalysts are the driving force behind advancements in the chemical industry. The challenge is scaling up the catalyst process from the laboratory to the pilot plant and, ultimately, to production levels. Reactive catalysts are typically large surface-area particles bonded to a larger structure. It s imperative that the amount of feed flowing through the research catalyst bed be precisely and accurately measured so that the conversion rate and selectivity can be accurately calculated. Normal catalyst development results in incremental improvements in conversion rates and selectivity. Errors in measurement at these very low flows will be amplified upon scale-up. Thus, flow measurement accuracy is critically important. QUANTIM offers high accuracy mass measurement and control. Examples: Petrochemical catalyst research, refining desulphurization catalyst research Precision Coatings Many critical coating processes use liquids that are sprayed onto surfaces. The delivery rate to the spray nozzle controls the film thickness on the object while gas flow determines droplet size and spray pattern. Precision coating processes require tight control of coating thickness, must be reproducible and minimize liquid waste. Medical device coating is an example of a process requiring extreme liquid flow precision. These coatings may contain an active drug which has to be evenly distributed and must also contain the correct dosage for the device. QUANTIM is perfect for controlling the flow rate to the spray nozzle. Gas flow is controlled using a thermal mass flow device. Examples: Cardiac device coating, catheter coating, pill coating, fragrance dispensing Chemical Injection/Dosing Systems Injecting a very small flow of chemical liquid into a larger stream is a common control challenge. Traditionally, a flowmeter measuring the larger stream creates pulses for a displacement pump to squirt a fixed volume of chemical into it. Because the pump volume is fixed, the frequency of pulses can be low enough during low-flow conditions to result in uneven addition of the chemical. QUANTIM is an ideal solution for metering and controlling the low flow of the chemical into the larger stream. A flow meter on the large volume line generates a continuous flow signal. This signal becomes the setpoint for the QUANTIM, which will control the flow based on a fixed ratio of injectant to large flow. The result is a steady concentration of chemical in the larger stream. QUANTIM also provides a positive feedback of actual delivery amount, which can be useful for documenting injection volumes. Examples: Natural gas and propane odorization, gas humidification, fuel additives, fuel cells

5 Metering Pump Control Metrology The performance of many low flow metering instruments such as pumps, injectors, and dispense heads must be periodically verified and calibrated. As a true mass measurement transfer standard, QUANTIM is ideal for this application. QUANTIM s Coriolis sensor is fluid independent, resulting in a very flexible flow standard for metrology applications. Importantly, because QUANTIM can function as a flow meter or flow controller, it can verify passive flow sensors or actively control flow to a device. Examples: Flow laboratories, fuel cells, analytical devices and hydraulic devices Metering pumps are open-loop devices that normally cannot provide any positive feedback of actual delivery rate to the process. The solution to this is a QUANTIM flow meter which can be used in-line with a metering pump to document actual flow or can be used to provide a fluid demand signal to the pump. The responsive Coriolis sensor provides feedback for such cyclical flows produced from a positive displacement pump. Examples: Chemical research, pilot plants process plants High Pressure Gases Accurate measurement and control of a gas is not always easy under high pressure conditions. Certain gases become supercritical under even moderate fluctuations in pressure and temperature. Supercritical gases are difficult to measure using traditional thermal flow sensors since the heat capacity can vary greatly over a small shift in temperature. QUANTIM is ideal for measuring and controlling supercritical gases. Examples: Supercritical carbon dioxide, supercritical hydrocarbons such as ethylene Vacuum Thin Film Coating In certain types of industrial and high tech manufacturing processes, the ability to create a thin chemical coating or film is critical. Many of the chemical precursors used to create these films are liquid at room temperature and must be vaporized prior to entering the process chamber. The problem is that typical vaporizers use very high heat to create vapor, which causes the delicate precursors to decompose, clogging the vaporizer and contaminating the process. The Brooks /MSP Turbo-Vaporizer TM, with its fine droplet atomizer and recirculating gas heat exchanger, provides an ideal solution. Carrier gas, heated to the temperature of the liquid, quickly, yet gently, vaporizes the atomized liquid, resulting in a pure, clean vapor. And the Brooks/MSP Vaporizer accommodates up to 3 liquids at once for processes such as doped silicon oxide. The precise flow control of QUANTIM, coupled with thorough mixing of the vapor components, results in outstanding stoichiometry. Examples: Semiconductor CVD/ALD coatings, metal hard coating, diamond-like coatings

6 Specification Highlights Emerson Process Management Brooks Instrument 407 West Vine St. Hatfield, PA USA Telephone Toll Free FLOW Fax Emerson Process Management Brooks Instrument B.V. Groeneveldselaan AZ Veenendaal Netherlands Telephone Fax brookseu@emersonprocess.com Emerson Japan, Ltd. Emerson Process Management Brooks Instrument 1-4-4, Kitasuna, Koto-Ku Tokyo, Japan Telephone Fax brooksas@emersonprocess.com Flow measurement and control range: 1 gram/hour to 28 kg/hour Flow measurement accuracy: to +/- 0.2% of rate Settling time: 0.1 to 2 seconds Density accuracy: +/ g/cc Maximum pressure: configurations to 300 bar (4500 psi) Communications options: analog, HART, Modbus, Profibus -PA, FOUNDATION fieldbus TM Hazard area options: Class I Division 2/Zone 2 or Class I Division 1/Ex Package options: IP-40/NEMA1 or IP-65/NEMA4X Physical size (Model QMBC IP40 controller, W x H x D): Approx. 15 x 15 x 4 cm (6 x 6 x 1.5 in.) Emerson Provides Low Flow Coriolis Measurement And Control Solutions Existing low flow technologies for measuring and controlling fluids may not be adequate to meet the ever increasing demand for greater accuracy and reliability. That s why Brooks products combine unmatched product innovation with extensive application experience to deliver complete process control solutions. We look at each customer s unique needs, apply the right combination of technologies, and provide turnkey installation and integration assistance on a global basis in order to keep our customers profitable and competitive in the marketplace. For the Brooks representative closest to you, visit our website at The Emerson logo is a trademark and service mark of Emerson Electric Co. Brooks and QUANTIM are marks of Brooks Instrument, a division of the Emerson Process Management family of companies. All other marks are property of their respective owners. Publication B-QM-eng 3/ , Brooks Instrument Div., Emerson Electric Co.