Straw gas flowmeter | Turbine LWQ biogas flowmeter

Straw gas flowmeter:
working principle:
The LWQ gas turbine flowmeter is equipped with temperature and pressure sensors, as well as an intelligent flow integrator. Through a microprocessor unit, the real-time collected flow, temperature, and pressure signals are compensated for temperature and pressure according to the gas equation, and the compression factor is automatically corrected. Then, the volumetric flow rate under standard conditions is displayed intuitively.
Straw airflow meter, application scenarios:
Suitable for measuring gases such as natural gas, coal to gas, liquefied gas, light hydrocarbon gas, nitrogen, oxygen, etc.
Gas turbine flowmeter, main features:
1. High quality alloy turbine with higher stability and corrosion resistance
2. Imported high-quality specialized bearings with long service life
3. The isolation between the measuring room and the ventilation room ensures the safety of the instruments
4. It can detect the temperature, pressure, and flow rate of the tested gas, automatically track and compensate for the flow rate, and display the accumulated gas volume under standard conditions (Pb=101.325KPa, Tb=293.15K); Real time temperature and pressure values can be queried.
5. Wide flow range (Qmax/Qmin ≥ 20:1), good repeatability, high accuracy (up to 1.0 level), low pressure loss, low starting flow rate, up to 0.6m3/h
6. Multi point nonlinear correction of intelligent instrument coefficients
7. Built in pressure and temperature sensors, high safety performance, compact structure, and beautiful appearance
8. The instrument has explosion-proof and protective functions, with explosion-proof markings of Exd Ⅱ BT6 and Exia Ⅱ CT6, and a protection level of IP65
9. The system operates with low power consumption, and a 3.2V10AH lithium battery can be used continuously for more than 3 years
10. The instrument coefficient and cumulative flow value will not be lost for ten years after power failure Straw airflow meter, technical parameters:

Instrument caliber and connection method	25, 40, 50, 80, 100, 150, 200, 250 are connected by flanges
	25 and 40 can be connected using threaded connections
accuracy class	± 1.5% R, ± 1% R
Range ratio	1:10； 1:20； 1:30
Display mode	The widescreen display simultaneously displays instantaneous flow, daily cumulative flow, total cumulative flow, temperature, pressure, time, date, and battery level
Instrument material	Table body: 304 stainless steel; Impeller: anti-corrosion ABS or high-quality aluminum alloy; Monitor: Cast aluminum
Temperature and pressure sensors	built-in
Temperature of the tested medium (℃)	-30℃～+80℃
environmental condition	Medium temperature: -30 ℃~+80 ℃, relative humidity 5%~90%, atmospheric pressure 86~106Kpa
communication signal	Three wire working condition pulse, three wire standard condition pulse, three wire 4-20mA, RS485 protocol, IC card signal
power supply	Built in lithium battery, external 24VDC dual power supply
Distance	≤1000m
Signal line interface	Internal thread M20 × 1.5
Explosion proof grade	ExdIIBT6
protection grade	IP65

Straw airflow meter, flow range and working pressure:

Instrument diameter	code	Standard range	code	Expand range
DN25（1"）	S	2.5-25 m3/h	W	4-40 m3/h
DN40（1.5"）	S	5-50 m3/h	W	6-60 m3/h
DN50（2"）	S1	6-65 m3/h	W1	5-70 m3/h
	S2	10-100 m3/h	W2	8-100 m3/h
DN80（3"）	S1	13-250 m3/h	W1	10-160 m3/h
	S2	20-400 m3/h	W2
DN100（4"）	S1	20-400 m3/h	W1	13-250 m3/h
	S2	32-650 m3/h	W2
DN150（6"）	S1	32-650 m3/h	W1	80-1600 m3/h
	S2	50-1000 m3/h	W2
DN200（8"）	S1	80-1600 m3/h	W1	50-1000 m3/h
	S2	130-2500 m3/h	W2
DN 250（10"）	S1	130-2500 m3/h	W1	80-1600 m3/h
	S2	200-4000 m3/h	W2
DN 300（12"）	S	200-4000 m3/h	W1	130-2500 m3/h