This application note explains the processes run in small scale, tabletop bioreactors as well as which Brooks Instrument mass flow controllers are the right fit and why.
When most people think yogurt, they think of slimming down. But in this case, the goal was to get bigger — at least for the yogurt manufacturer. When the manufacturer wanted to scale up its process, they called on Brooks’ partner Cross Instrumentation for help.
In fiber optics manufacturing, vapor technology is used to deposit certain materials onto the preform, or core, of fiber optic cables which consists of a core of silicate glass doped with germanium.
More than 20 years have passed since the United States dedicated a space mission to studying Venus, but NASA engineers are preparing to take exploration of the "Earth's Twin" to the next level with some help from Polycontrols Technologies and Brooks Instrument.
Spray coating is being considered as an alternative technique for forming thin films and for applying liquid dopant to wafers. The control of liquid to the spray nozzle determines the film thickness and the gas flow to the spray nozzle determines droplet size and distribution.
Brooks products play a key role in polysilicon production. Our glass and metal tube variable area meters are widely used for measuring flow of utility fluids such as low pressure nitrogen, nitrogen purge and sweep flows, make-up hydrogen, heat transfer fluids, and pump seal gases.
One of the most important films in a thin film solar cell is the transparent conducting oxide. Metal organic precursors are used to deliver these atoms to the substrate. Bubblers have been used to vaporize these liquids, with the disadvantages of minimal flexibility and relatively low mass delivery.
Many solar thin films are deposited with chemical vapor deposition (CVD) techniques. In this process, a reactive gas is commonly used to deposit material on a substrate in a vacuum
chamber. Typically, mass flow controllers with all-metal construction are recommended to eliminate the possibility of contamination from oxygen or water.
Physical vapor deposition or sputtering is commonly used for creating films of material, often metal, on a substrate. Plasma is used to remove and accelerate the atoms of interest toward the target placed in a vacuum chamber. Mass flow controllers are used to control the gas flow to the chamber. Our advanced control valve PID controller can eliminate overshoot that can quench and destabilize the plasma.
Brooks robust magnetic level gauges provide reliable liquid level measurement through the use of a proven magnetic float technology which does not require external power. As a result, plant engineers can continue to monitor material levels despite planned or unplanned power cuts. Optional alarms and transmitters are available to permit remote monitoring.
Components and assemblies that are designed against leaks during use can be tested quickly and reliably using Brooks flow meters. Simply apply pressure or vacuum to the device under test and confirm the absence of flow using a Brooks variable area flow meter, thermal mass flow meter, or Coriolis mass flow meter. Examples include valves, radiators, hydraulic and pneumatic assemblies, plumbing fixtures, and more.
Fuel cell test stands used are used to measure the efficiency of the fuel cell. These devices rely on stable, accurate mass flow controllers with wide turndown and fast response. High-performance Brooks products are idea for this application.
Large rotating equipment requires effective and reliable flow monitoring on a number of fluid supplies – like lubrication fluids, coolants, and dry gas seal gasses – to ensure efficient and safe operation.
Process analyzers are designed to accurately and continuously measure a target analyte in a process stream. Sampling is the single most critical issue for process analysis. When the sampling system becomes plugged, it can cause big problems and costly, unscheduled maintenance.
Injecting a relatively small flow of chemical liquid – into a larger stream is a common control challenge. Common injectants are anti-foaming agents, corrosion inhibitors, descalers, biocides, oxygen scavengers, odorants, dyes, and neutralizing agents.
Many coating processes use liquids that are sprayed onto substrates. The rate of liquid delivery to the spray nozzle controls the thickness of the film on the substrate. Gas flow determines droplet size and spray pattern.
Brooks has earned a leading reputation in the measuring and controlling of gas flows for bioreactor applications.
Brooks offers many products that deliver exceptional performance for vacuum processes such as CVD, ALD, etch, and diffusion. For gas flow control, our wide assortment of gas mass flow controllers permits excellent alignment between application requirements and MFC performance. For example, our B-Series mass flow controllers incorporate active pressure compensation to maintain constant flow despite pressure fluctuations.
The thermal process market is diverse, but theapplication demands are similar – reliable, accuratecontrol of inert shielding gases and excellent control of O2 to ensure reliable outcomes time after time.
Scaling up the catalyst process from the laboratory to the pilot plant – and ultimately to production levels – is a challenge. The amount of feed flowing through there search catalyst bed must be measured precisely so that the conversion rate and selectivity can be accurately calculated and successfully scaled up.
Many industrial processes require reliable, accurate,and repeatable gas and liquid flow measurement and control. Brooks variable area meters and variable area flow meters are exceptionally versatile, and are ideal for monitoring process flow, instrument impulse lines, purge gas flows, flows of flushing or cooling media, make-up flows, and reactor gas and liquid feeds.