When it comes to quantifying gas quantities, mass is almost always favored above volume. While pressure determines volume, mass remains the same no matter how much space is taken up by the substance. Mass flow meters make use of a variety of physical principles by employing techniques such as ultrasound and the impact of the Coriolis, although thermal mass flow measurement is among the most applicable types of mass flow measurement in an industrial environment.
In thermal mass flow meters, a phenomenon that is analogous to wind chill is utilized. The phenomenon known as wind chill happens when flowing air dissipates heat from a surface. When molecules of air come into touch with a surface, a little amount of heat energy is exchanged via the process of conduction. A larger rate of heat loss occurs when there are more molecules moving through the air per second.
Two probe elements are placed in the gas stream when using a thermal mass flow meter to measure the flow of the gas. The first element simply keeps a record of the temperature of the gas, while the second element integrates a heating circuit to keep a constant differential above the temperature of the first element.
The heated probe loses a greater amount of its stored energy as the volume of gas that is flowing per second increases. In order to make up for the loss, the system ramps up the heating current, and this shift is correlated with the movement of mass.
The temperature probes only require a very tiny cross-section, therefore the effect that they have on the flow of gas is extremely negligible. As a result, the fact that the thermal mass flow meter causes almost little pressure loss at all is one of its most significant selling points.
Secondly, the application of this method produces a flow meter of extremely high precision when it is paired with signal conditioning of a high-quality. The temperature as well as density of the gas do have an effect on heat transfer, and the reliability of the process is improved whenever the gas is clean.
The difference between fox thermal and digital fox
A very high turndown ratio and outstanding low-flow sensitivity may be achieved as a result of the design of the Fox DDC-Sensor, which is a direct digitally controlled sensor. This, in conjunction with the flow meter’s powerful and quick-processing electronic components.
In addition, the advanced control makes it possible to switch between various gases or gas mixtures without having to send the meter back to the manufacturer in order to be recalibrated.
Coating activities require a layer of coating that is uniform, consistent, and free of defects at all times. Any change in coating thickness has the potential to impact how well drugs are delivered. Furthermore, defects in the product’s look, such as film cracking as well as logo bridging, could make customers less confident in the item.
You should also know that controlling the airflow precisely is essential to coating processes since even small changes can have a significant impact on coating delivery rate, temperature, and humidity. It is possible for the control systems to maintain the required level of stability if a flow meter with a high precision is installed in the delivery system.
Measuring the flow of exhaust air has its own set of advantages as well. Variation in this area may indicate that there are problems with the filtration system and may also generate a pressure differential that has an effect on the coating deposition. If you are interested in purchasing a mass flow meter, you can buy here, but not before doing extensive research on the topic first.
Nitrogen blanketing
To prevent the presence of oxygen, the use of nitrogen blanketing is common in the pharmaceutical business as well as other sectors. This eliminates the risk of explosion that is involved with handling powder and stops any interactions that oxygen might have with the contents.
The shelf life of food products can be increased by being packaged in an environment containing nitrogen. Flow metering ensures that sufficient nitrogen is delivered with no excess going to waste.
Nitrogen purging
The shelf life of the product can be extended with the help of this method. By using nitrogen to displace air, an oxygen-free environment can be created for the drug as well as the package it comes in. This helps ensure the safety of consumers while also reducing the waste produced by pharmaceutical companies.
As is the case with blanketing, adding a flow meter with a high degree of precision into the blanketing system by ensuring that any operational concerns are discovered promptly.
