Introduction: The gas turbine flowmeter is self-developed by absorbing the advanced technology of flow instruments at home and abroad, and integrating the theories of gas mechanics, fluid mechanics, electromagnetism, etc. A new generation of high-precision, high-reliability gas precision measuring instruments integrating temperature, pressure, flow sensors and intelligent flow totalizers, with excellent low pressureand high-pressure metering performance, various signal output methods and low sensitivity to fluid disturbances, widely used in natural gas, coal-to-gas, liquefied gas, light hydrocarbon gas and other gases measurement. Features: 1. Using a new type of sensor, the initial flow rate is low, the pressure loss is small, the anti-vibration and anti-pulsation flow performance is good, it is not easy to corrode, the reliability is good, and the service life is long; 2. Adopt new microprocessor and high-performance integrated chip, with high computing precision, powerful functions and superior performance; 3. Adopt advanced micro-power consumption high-tech, low power consumption of the whole machine. It can be powered by the internal battery for a long time, and can also be powered by the external power supply; 4. According to the flow frequency signal, the meter coefficient can be automatically corrected linearly in eight segments, and the calculation accuracy of the meter can be improved according to user needs; 5. Using EEPROM data storage technology, it has the function of storing and querying historical data, and three historical data recording methods are available for users to choose; 6. The flow meter head can be rotated 180°, which is easy to install and use; 7. High accuracy, generally up to ±1.5%R, ±1.0%R; 8. Good repeatability, short-term repeatability can reach 0.05% to 0.2%, precisely because of its good repeatability, it is the preferred flowmeter in trade settlement; 9. It can detect the temperature, pressure and flow of the detected gas, and can automatically track and compensate the flow, and display the standard state. (Pn=101.325KPa, Tn=293.15K) gas flow: real-time query of temperature, pressure, time, date and other data. Technical parameter: Executive standard: Measurement of gas flow in closed pipelines - gas turbine flowmeter (GB/T8940-2003) Instrument diameter (mm) and connection method: 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 are flanged 25, 40, 50 can be screwed Accuracy class: ±1.5%R (±1%R needs to be specially made)* Turndown ratio: 1:10; 1:20; 1:30 Meter material: Meter body: 304 stainless steel or cast aluminum Impeller: anti-corrosion ABS or high quality aluminum alloy Converter: Cast Aluminum Conditions of use: Medium temperature: -20℃～+80℃ Ambient temperature: -30℃～+60℃ Relative humidity: 5% to 90% Atmospheric pressure: 86Kpa～106Kpa Working power supply: A. External power supply: +24VDC±15%, ripple ≤±5%, suitable for 4-20mA output, pulse output, RS485, etc. B. Internal power supply: 1 set of 3.0V10AH lithium battery, the battery voltage can work normally when the battery voltage is 2.0V ~ 3.0V. Undervoltage indication occurs when the voltage is lower than 2.0 Power consumption of the whole machine: External power supply: < 1W Internal power supply: average power consumption ≤ 1W, can be used continuously for more than three years. Signal output function: pulse signal, 4-20mA current signal, control signal Communication output function: RS485 communication Real-time recording function: start-stop recording, daily recording, fixed time interval recording Signal wiring port: Internal thread M20×1.5 or other Explosion-proof grade: ExdⅡBT6 or ExiaⅡCT4 Protection class: IP65
Introduction: The gas turbine flowmeter is self-developed by absorbing the advanced technology of flow instruments at home and abroad, and integrating the theories of gas mechanics, fluid mechanics, electromagnetism, etc. A new generation of high-precision, high-reliability gas precision measuring instruments integrating temperature, pressure, flow sensors and intelligent flow totalizers, with excellent low pressureand high-pressure metering performance, various signal output methods and low sensitivity to fluid disturbances, widely used in natural gas, coal-to-gas, liquefied gas, light hydrocarbon gas and other gases measurement.
