Mass flow meters offer precise measurement of fluids such as compressed air and industrial gases. They determine flow rate by directly measuring the mass of a fluid at various temperatures with high precision.
These highly-specialized devices measure the volumetric flow rate, but it’s essential to remember that each fluid has its own density, pressure and temperature. These factors can impact measurement errors when volumetric flow rates are calculated; hence the need for multivariable transmitters or software that accounts for these variations.
Direct Mass Flow Measurement
Mass flow meters are indispensable in many applications where it’s critical to measure liquid and gas mass flow rates. These devices help optimize plant production, efficiency and product quality by controlling process conditions. Mass measurements may even serve as indicators of overall plant performance.
Direct Mass Flow Measurement (DMFM) is a method of measuring the flow rate of gases and liquids without using volumetric meters or pressure sensors. This is ideal for applications where media’s mass rate changes due to changes in temperature, density or pressure.
Meter accuracy is the degree to which a flow measurement output conforms to its calibration curve. This can be expressed as a percentage and it tends to be higher for more precise fmeters.
One of the most widely-used direct flow meters is a Coriolis meter, which uses an artificial Coriolis acceleration to measure mass flowrate. These devices utilize U-shaped tubes vibrating in an angular harmonic oscillation which causes a measurable phase shift in fluid.
Another popular type of meter is an ultrasonic meter, which utilizes electromagnetic waves to detect fluid flow. These devices are highly accurate and have a wide range of applications such as high-molecular polymer slurries, food pulp, paper pulp and paint coatings.
Thermal mass flow meters (TMFMs) are similar to DMFMbut differ in that they operate on the principle of heat transfer from a heated probe into the flowing stream. The meter flow mass has two temperature sensors which sense the stream’s temperature and an electric heater which injects energy into these sensors. This is advantageous in certain commercial applications.
Ultrasonic flow meters differ from traditional thermoelectric meters in that they require a differential pressure orifice plate that creates a head loss – an unnecessary waste of energy. Unfortunately, this loss cannot be recovered, leading to significant errors when measuring mass flowrate.
These instruments boast an accuracy rate of greater than 100:1, making them suitable for measuring both clean and corrosive liquids and gases. Their wide temperature range and superior sensitivity make them popular choices in many industries. Furthermore, their hermetic sealing around the bypass shunt and sensor gas path makes them safe to use; calibration should always follow manufacturer’s recommendations.
High Accuracy
These devices measure the volume of gas and liquids, which can be expressed in units such as:
- acm/h
- sm3/sec
- kscm/h
- MMSCFD
These measurements are critical for evaluating process efficiency and guaranteeing safety within industrial facilities. You can visit this helpful site for more information about these measurements.
They’re essential for custody transfer applications, such as exchanging raw and refined petroleum between tanks and tankers in the oil industry. Accuracy and repeatability are paramount in these tasks, so it’s essential to select a device with superior performance characteristics.
Wide Temperature Range
Thermal devices are a popular solution for measuring gases due to their wide temperature range. Unlike volumetric meters, which are affected by changes in viscosity, temperature, pressure and density of the fluid being measured, thermal mass meters operate independent of these factors.
These sensors operate according to the convective heat transfer theory. They employ two ratiometrically matched resistance temperature detectors (RTDs) within the sensor housing, which are protected by either 316 stainless steel sheath or Hastelloy C sheath depending on the model.
Easy to Operate
These meters are popular due to their ease of use. Not only are they easy to install and use, but also maintain as there are no moving parts that could become clogged or worn out over time.
These meters are also easy to maintain, requiring only minimal manual or automated cleaning in order to keep them running optimally. You can clean these units using a specialized sanitizer and disinfectant solution designed specifically to kill bacteria, viruses and other hazardous contaminants. You can click the link: https://www.healthychildren.org/Cleaners-Sanitizers-Disinfectants for more information about disinfectants.
Other advantages include straightforward electrical connections, minimal power demands and easily visible displays. Some units can even be directly connected to your computer via USB interface for added convenience.
Another benefit of these devices is their versatility and capacity to accommodate various fluid types. They are capable of measuring both hazardous and non-hazardous gases and liquids alike.
Furthermore, temperature sensors can be utilized for monitoring and collecting status data. This makes them ideal for use in closed-loop cooling systems.
These devices are frequently used in industrial applications; choosing the right one for your needs with ensure best results.
