• Accuracy of +/- 1% of full scale
• Accuracy of +/- 0.7% of reading +.3% of FS
• 316 stainless steel construction
• Flow ranges from 0 to 10 sccm to 0 to 1000 slpm.
• Fast-response control valve
• True digital performance with great flexibility
• “Primary Standard” calibration& NIST traceability
• Dial-A-Gas® Technology
• 10 pre-programmed gases come standard
• Substitute up to 9 gases of your own
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The Smart-Trak is our flagship mass flow meter and controller. Smart-Trak has demonstrated that premium flow instruments do not have to be hard to use. This combination of convenience with un-matched performance and flexibility has earned the 100 Series awards and praise as one of the finest MFC's in the world. Smart-Trak is the culmination of a massive three year development effort that has created a higher standard of performance for gas flow instruments into the future.

Smart-Trak is designed so the physics are correct! Excellent accuracy and reliability coupled with unsurpassed instrument stability result from a patented, inherently linear design, advanced platinum sensor technology, and a valve that is strong, flexible, and forgiving. Smart-Trak features Dial-A-Gas® Multiple Gas capability so that one single unit may be used with up to 10 gases. The 100 Series is constructed entirely from 316 Stainless Steel, so it can be used with any clean gas including toxics, corrosives, combustibles, and even mixtures of these. The unique Pilot Module replaces expensive control/readout boxes and is available mounted to the face of the instrument or in a convenient hand-held remote version.

Brooks QUANTIM family of products are the smallest lowest flow Coriolis meters and controllers available on the market. With a footprint the size of a handheld organizer, you can fit this instrument into any tight space. With a range of 0.001 to more than 40 kg/hr, you can measure mass or volume flow and density or temperature for drops of liquid, slurries, or gas. QUANTIM offers unsurpassed accuracy and unmatched zero stability in demanding low flow applications.

QUANTIM provides precision mass flow measurement, integral control, on line density and temperature measurement all in one compact package. The heart of the device is a patented Coriolis sensor design which measures low flows independent of the fluid type or process variables. This provides you with unsurpassed performance in even the most challenging low flow applications.

Most critical processes require control as well as measurement, therefore QUANTIM offers an optional integrally mounted, in-line control valve. No remote electronics are required as all the transmitting and control electronics are contained within the product housing. Available with a variety of options and global approvals the Brooks QUANTIM meters and controllers provide unsurpassed performance, solving specific challenges in demanding low-flow applications.
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• No moving parts
• Thru-Flow measurement
• Attitude insensitive
• Fast and accurate measurement
• Negligible dead-volume
• In combination with a control valve: continuous and stable control
• Analog or digital: RS232, Profibus-DP®, DeviceNetTM, Modbus or FLOW-BUS
• Stainless Steel sensor; on request: PEEKTM, Fused Silica
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Features

• High accuracy Mass Flow Controller (0.8% of set point for 10 – 100% FS)
• Ultra fast settling time (<100ms to within 2% of setpoint)
• CMOSens technology
• Analog interface (0-5Vdc)
• Unipolar Power Supply (14 to 24 Vdc)
• Down-mount, VCR, VCO fittings
• Digitally calibrated & temperature compensated
• NIST traceable calibration

MFC PRINCIPLES

Mass Flow Controllers (MFCs) are used wherever accurate measurement and control of a mass flow of gas is required independent of flow pressure change and temperature change in a given range. Mass Flow Meters (MFMs) are used wherever accurate measurement of gas is required without control of the flow, which is done by another device. To help understand how an MFC works, it can be separated into 4 main components: a bypass, a sensor, an electronics board and a regulating valve:

The bypass, the sensor, and one part of the electronics board are the measurement side of the mass-flow controller and make a Mass Flow Meter. The regulating valve and the other part of the electronics board are the controlling side of the mass-flow controller and exist only on a Mass-Flow Controller. So every Mass-Flow Controller includes a Mass-Flow Meter.

MEASUREMENT PRINCIPLES

The flow is divided between a heated sensing tube (the sensor), where the mass flow is actually measured, and a flow restrictor or bypass, where the majority of flow passes. The bypass is designed in a way that flow thru the sensor and the bypass is always proportional to the flow range for which the mass-flow controller is built. The sensor is designed to deliver an output voltage almost proportional to the gas flow circulating thru it, which is due to the bypass design being proportional to the total flow circulating thru the mass-flow meter or controller. The electronics board amplifies and linearizes the sensor signal so the output of the+ electronics board, named ?readout?, gives a signal proportional to the total flow circulating thru the mass-flow meter or controller. Most of the time this signal is a 0-5 V signal; 0 volts indicating ?no flow?, 5 volts indicating full scale flow of the device. Full scale is the maximum flow for which the mass-flow controller is designed and calibrated to work with at high accuracy. This information is always written on stickers, which are on the top of the cover and the side of the mass-flow stainless steel base. Also written on the sticker is the gas for which the mass-flow controller is calibrated.

Why use a bypass? Because the sensor element can only measure small flow (typically 5 sccm), the bypass/restrictor allows the controller to control and measure greater amounts of flow. On a 5 sccm full scale mass-flow controller, there is no bypass, all of the gas would flow thru the sensor. On a 100 sccm full scale mass-flow controller, the bypass is adjusted so that when 100 sccm flows thru the controller, 5 sccm will flow thru the sensor tube and 95 sccm will flow thru the bypass.

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