The flange type thermal gas mass flowmeter is an instrument that uses the principle of thermal conduction to measure fluid flow rate. The flowmeter uses the constant temperature difference method to accurately measure gas mass flow rate. Thermal gas mass flow meters have the advantages of small volume, high degree of digitization, easy installation, and accurate measurement.
Manufacturer of flange type thermal gas mass flowmeter
The flange type thermal gas mass flowmeter is equipped with a process pipeline with the same inner diameter as the on-site pipeline when it leaves the factory. The connection method with the on-site pipeline is flange connection or threaded connection. The flange standard complies with the national standard GB/T9119-2000. Pipe segment sensor is suitable for pipeline diameter: DN15～200mm。
Flange type thermal gas mass flowmeter is an instrument that uses the principle of thermal diffusion to measure gas flow rate. The sensor consists of two reference level thermal resistors (RTDs). One is the speed sensor RH, and the other is the temperature sensor RMG that measures changes in gas temperature. When these two RTDs are placed in the measured gas, the sensor RH is heated, and the other sensor RMG is used to sense the temperature of the measured gas. As the gas flow rate increases, the airflow carries away more heat, and the temperature of the sensor RH decreases.
The flange type thermal flowmeter is a flow meter designed based on the principle of thermal diffusion When a fluid flows through a heating object, the amount of heat lost by the heating object is proportional to the flow rate of the fluid The sensors of this series of flow meters have two standard grade RTDs, one used as a heat source and the other used to measure fluid temperature. When the fluid flows, the temperature difference between the two is linearly related to the flow rate, and this relationship is then converted into a linear output of the measured flow signal through microelectronic control technology.
| property | Technical parameter | |
| Structural form | plug-in | pipelined |
| Measuring medium | All gases (except acetylene) | |
| Pipe diameter range | Caliber DN32 or higher | DN15～DN200mm |
| Velocity range | 0.1～120Nm/s | |
| precision | ±1～2.5% | |
| Operating temperature | Sensor: -40℃ ~ +220℃ Converter: -20℃ ~ +45℃ | |
| Working pressure | Medium pressure ≤2.5Mpa | Medium pressure: 4.0Mpa |
| Power supply | DC24V OR AC220V≤18W | |
| Response speed | 1s | |
| Output signal | 4-20mA (photoelectric isolation, larger load 500Ω), pulse, RS-485 (photoelectric isolation), HART protocol | |
| Give an alarm | 1-2 relay normally open contact, 10A/220V/AC, 5A/30V/DC | |
| Type of supply | Separate structure, integrated structure | |
| Pipe material | Carbon steel, stainless steel | |
| Field display | Four lines of Chinese liquid crystal display | |
| Display content | Mass flow, standard volume flow, cumulative flow, standard time, cumulative running time, standard flow rate, etc | |
| Class of protection | IP65 | |
| Sensor material | Stainless steel | Stainless steel, carbon steel |
Product features of flange type thermal gas mass flowmeter:
- Easy installation, simple maintenance, bidirectional detection, anti vibration
- Up to 24 point flow measurement
- Correction of multi-point nonlinear curves for output analog signals
- Wide range ratio 100:1
- Simultaneous detection of flow and temperature, switching display
- Large caliber small flow measurement, capable of leak detection
- Using proprietary technology “dual balanced structure” to package sensors
- Exclusive high humidity and high temperature algorithm, with medium temperature up to 500 ℃
- Direct quality flow detection without temperature and pressure compensation