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Thermal mass flow meter is a flow meter that uses the concept of conductive and convective heat transfer from a heated sensor to directly measure gas mass flow.

Thermal mass flow meters are used for almost all of the applications for gas flow. Thermal mass flow meters, as the name suggests, use heat to calculate flow. It uses one or more temperature sensors to introduce heat into the flow stream and measures how much heat dissipates.
This approach is most effective when measuring gas mass flow. Due to heat absorption considerations, it is difficult to get a reliable signal using thermal mass flow meters in liquids.

A flow meter is a device that measures the volumetric or mass flow rate in a variety of applications. The flow meter’s form and capacity are determined by the application. Volumetric and mass flow rates are used to calculate fluids, gases, and liquids.

The volume flow of conductive fluid in a closed pipeline can be determined with a magnetic flow meter. Magnetic flow meters are suitable for conductive water and wastewater applications. Magnetic flow meters are also used in the chemical and petroleum industries for flow measurement and monitoring.

Based on classification there are main two types
1- integral type and
2 – remote type.
In integral type sensor and transmitter assembles together. And in remote type sensor is installs on the pipeline and a transmitter is installed in the instrument room.

Some of the prominent benefits include are-

• More accurate results under tough operating conditions
• There are no moving parts, no pressure drops, and no maintenance requirements.
• Easy installation and adjustment of transducers
• Budget-friendly and adaptable
• Highly accurate and reliable
• These are usually available in clamp-on and insertion type

Working of ultrasonic flow meter is based on transit time principle which utilizes two transducers that function as both, ultrasonic transmitters and receivers. The transducers are clamped on the outside of a closed pipe or inserted in the pipeline by using an isolating ball valve assembly at a specific distance from each other.
Transit Time Flowmeters measure the time it takes for an ultrasonic signal transmitted from one sensor to cross a pipe and be received by a second sensor. Upstream and downstream time measurements are compared.
The time difference is a function of flow of the medium. With no flow, the transit time would be equal in both directions.

An ultrasonic flow meter utilizes ultrasound waves to measure the velocity of a fluid and is used in a variety of fluid applications. Ultrasonic flowmeters are ideal for water and other fluids.

Ultrasonic meters are ideal for wastewater applications or for any dirty liquid which is conductive or water-based but will generally not work with distilled water or drinking water. These flow meters are also ideal for applications where low-pressure drop, chemical compatibility, and low maintenance are required.

• Direct measurement of mass flow.
• No pressure or temperature compensation required
• 20:1 turndown.
• Wireless data transfer possible. Remote readings are available on wireless.
• Pulse, milliamps, and RS485 output for networking.

Electromagnetic Flow Meter is the best choice for some of the applications such as,
1.Sewage Treatment
2.Effluent Treatment
3.Water and wastewater management.
4.Sugar Industries & Distilleries
5.Automobile and Chemical Industries
6.Boiler Feed Water Measurement Plant

In the case of Manas Electromagnetic Flow Meters, the materials used in the liners are neoprene, polyurethane, and Hard Rubber.
These can be an awesome electric insulator, corrosion or erosion-resistant, and are obstruction proof. For this reason, these can be used for slurry applications and are suitable for most acids, bases, water, and aqueous solutions.

Manas Microsystem manufactures Steam Flow Meters that work for Saturated (100°C to 300° C) and Super-heated (300°C – 600°C) steam in closed conduits for pressures upto 30bar.

A new range of battery-operated flow meters is designed for situations where an electric supply is unavailable and accurate flow measurement is needed.

Electromagnetic flow meters are widely used for flow measurement of conducting fluid. These are used to measure wastewater applications or any dirty liquids that are conductive or water-based.

Electromagnetic Flow Meter is the best choice for some of the applications such as,

1. Sewage Treatment
2. Effluent Treatment
3. Water and wastewater management.
4. Sugar Industry & Distillery
5. Automobile and Chemical Industries
6. Boiler Feed Water Measurement Plant

In Electromagnetic Flow Meters, the materials used as liners are neoprene, polyurethane, and Hard Rubber, and PTFE(Teflon). These materials work as an awesome electric insulator, are corrosion or erosion-resistant, and are obstruction-proof.

Compressed air is costlier than steam. Further, it is invisible when it leaks, unlike steam which is visible at the leakage points. Manas Thermal Mass flow meter will help to assign expenditures, track total consumption, and increase plant productivity by monitoring compressed air usage rates through various facility divisions. Thermal mass flow meters can provide both overall consumption and time tracking, which can aid in identifying high-consumption times.

Measuring gas mass flow is always believed to be costly and difficult. Not anymore. Manas offers Thermal Mass Flow Meters that measure the gas mass flow effectively.  The accuracy and temperature correction of a thermal mass flow meter is optimum, and the repeatability is outstanding.

Boiler draft needs to be measured at 7 different locations in a boiler. Accurate draft measurement can reduce emissions, improve boiler efficiency and reduce energy bills.

The difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage of a boiler is termed as a draft. A draft can also be referred to as the difference in pressure in the combustion chamber area which results in the motion of the flue gases and the air flow.