Lithium battery powered gas turbine flowmeter

1、 Overview of lithium battery powered gas turbine flowmeter
The lithium battery powered gas turbine flowmeter is a new generation of high-precision and highly reliable gas precision measuring instrument that integrates temperature, pressure, flow sensors, and intelligent flow integrators. It has been independently developed based on advanced flow meter technologies at home and abroad, and integrates theories of gas mechanics, fluid mechanics, electromagnetics, etc. It has excellent low-pressure and high-pressure measuring performance and is widely used for measuring gases such as natural gas, coal to gas, liquefied gas, and light hydrocarbon gases.
2、 Characteristics of lithium battery powered gas turbine flowmeter
Adopting a new type of sensor, it has low starting flow rate, small pressure loss, good anti vibration and anti pulsating flow performance, is not easy to corrode, has good reliability, and has a long service life.
Adopting a new type of microprocessor and high-performance integrated chips, it has high computational accuracy, powerful overall functions, and superior performance.
Adopting advanced low-power high-tech, the whole machine has low power consumption.
According to the flow frequency signal, the instrument coefficient can be automatically linearly corrected in eight segments, which can improve the calculation accuracy of the instrument according to user needs.
The flowmeter head can rotate 180 °, making installation and use simple and convenient.
High precision, generally up to ± 1.5% R and ± 1.0% R.
Good repeatability, short-term repeatability can reach 0.05% to 0.2%. It is precisely because of its good repeatability that flow meters are preferred in trade settlement.
3、 Main parameters of lithium battery powered gas turbine flowmeter

Execution standards	Measurement of Gas Flow in Closed Pipelines - Gas Turbine Flowmeters (GB/T8940-2003)
Instrument diameter (mm) and connection method	20. 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300 are connected by flanges 25, 40, and 50 can be connected using threaded connections
Accuracy level	± 1.5% R (± 1% R needs to be customized)*
Range ratio	1:10 ； 1:20 ； 1:30
Instrument material	Table body: 304 stainless steel or cast aluminum Impeller: anti-corrosion ABS or high-quality aluminum alloy Converter: Cast aluminum
Usage conditions	Medium temperature:- 20℃～+80℃ Environmental temperature:- 30℃～+60℃ Relative humidity: 5% to 90% Atmospheric pressure: 86Kpa to 106Kpa
Working power supply	Internal power supply: 1 set of 3.0V10AH lithium batteries, which can work normally when the battery voltage is between 2.0V and 3.0V.
Whole machine energy consumption	External power supply:<> Internal power supply: average power consumption ≤ 1W, can be used continuously for more than three years.
Signal wiring port	Internal thread M20 × 1.5 or other
Explosion proof grade	Exd Ⅱ BT6 or Exia Ⅱ CT4
Protection level	IP65

4、 Selection of lithium battery powered gas turbine flowmeter

Instrument model	LWQ-B
power supply	lithium battery
accuracy class	Level 2.5-1.5
measuring range	Standard range or extended range
monitor	have
temperature and pressure compensation	not have
communication interface	not have
Real time recording	not have
Instrument material	Aluminum alloy or stainless steel
Explosion proof grade	ExdIIBT6 or ExiaICIT4
protection grade	IP65
Overall Power Consumption	<>
Instrument communication	DN25～DN300
Installation method	flange mounting
medium temperature	-20℃～80℃
ambient temperature	-30℃～60℃