Thermal Mass Flow Meter

• Measuring Medium: Various of Gas (Except acetylene)
• Pipe Size: (Insert connection) DN50-DN2000mm ,In-line connection(DN10-DN2000mm)
• Velocity: 0.1-100Nm/s
• Accuracy: +/-1~2.5%
• Working Temperature: Sensor:-40~+220 degC Transmitter:-20~+45 degC

Advantages

Flange thermal gas mass flow meter advantanges :

1. Wide range ratio 1000:1;
2. Large diameter, low flow rate, negligible pressure loss;
3. Direct mass flow measurement without temperature and pressure compensation;
4. Very sensitive for low flow rate measurement;
5. Easy to design and select, easy to install and use;
6. Suitable for all kinds of single or mixed gas flow measurement Could measure gas with flow velocity from 100Nm/s to 0.1Nm/s, which can be used for gas leak detection;
7. The sensor has no moving parts and pressure sensing parts, and is not affected by vibration on the measurement accuracy. It has good seismic performance and high measurement reliability;
8. No pressure loss or very small pressure loss.
9. When measuring the gas flow, it is often expressed in the volume flow unit under the standard state, and the medium temperature/pressure change hardly affects the measured value. If the density is constant in the standard state (that is, the composition is unchanged), it is similar to a mass flow meter;
10. Support multiple communication methods, such as RS485 communication, MODBUS protocol, etc., which can realize factory automation and integration

Application

Flange thermal gas mass flow meter application:
Thermal gas air flow meter widely use for Electric power, Petrochemical industry, Glass, Ceramics and Building materials industry, and mainly be used to meausre Dry gas, such as Air, Natural gas, LPG gas, Biogas, ect. But thermal gas mass flow couldn’d be used to measure Vapour, Humidity gas and Ethyne.

Technical Data

Table 1: Flange Thermal Gas Mass Flow Meter Parameter

Table 2: Flange Thermal Gas Mass Flow Meter Sizing

Table 3: Common Use Gas Maximum Range

Table 4: Flange Thermal Gas Mass Flow Meter Model Selection

Installation

Flange thermal gas mass flow meter installation:

1. Observe the recommended inlet and outlet requirements.
2. Good engineering practice is necessary for the associated pipe work and installation.
3. Ensure correct alignment and orientation of the sensor.
4. Take measures to reduce or avoid condensation (e.g. install a condensation trap, thermal insulation, etc.).
5. The maximum permitted ambient temperatures and the medium temperature range must be observed.
6. Install the transmitter in a shaded location or use a protective sun shield.
7. For mechanical reasons, and in order to protect the pipe, it is advisable to support heavy sensors.
8. No installation in where large vibration exists
9. No exposure in the environment containing a lot of corrosive gas
10. No sharing power supply with frequency converter, electric welding machine and other machines which can make power-line interference.

Daily maintenance for flange thermal gas mass flow meter:
In the daily operation of the thermal gas mass flowmeter, check and clean the flowmeter, tighten the loose parts, find and deal with the abnormality of the flowmeter in operation in time, ensure the normal operation of the flowmeter, reduce and delay the wear of components, Extend the service life of the flowmeter. Some flowmeters will become fouling after being used for a period of time, and it must be cleaned by pickling etc. depending on the degree of fouling