Gas turbine flowmeter Overview 

 Series gas turbine XFTQ flowmeter is drawing on the flow meter at home and abroad advanced technology optimized design of integrated pneumatics, fluid mechanics, electromagnetism and the theory developed its own set of temperature, pressure, flow sensor and intelligent flow totalizer instrument in one of the new generation of precision, high reliability gas precision measuring instruments, with excellent low and high pressure metering performance, a variety of signal output mode and the low sensitivity of fluid disturbances, widely used in natural gas, coal gas, liquefied petroleum gas measurement of the light hydrocarbon gas and other gases. 

 The product by the state explosion-proof product quality inspection departments GB3836.2000 explosive gas atmospheres using electrical equipment - Part 1: General requirements ", and GB3836.2-2000 explosive gas atmospheres - Electrical Equipment - Part 2: Flameproof" d "GB3836.4-2000" explosive gas atmospheres - electrical equipment - Part 4: Intrinsic safety "i" in "standard inspection proof mark Exd Ⅱ BT4 (flameproof), Exia II CT4 (Intrinsically safe type). Applicable to contain II A, II B, II Class C T1 ~ T4 temperature classification of explosive gas mixtures of 0 (only intrinsically safe) zone 1, 2 dangerous places. 

 1.1 Features 

 n high-quality alloy turbine, the higher steady flow and resistance to the corrosive effect of 

 n imports of high-quality bearings, long life 

 n measuring room with the ventilation isolation rooms, to ensure the security of the instrument 

 n can detect temperature, pressure and flow of the measured gas flow automatically track compensation, and displays the standard state (Pb = 101.325KPa Tb = 29*K) gas volume accumulation; real-time query the values ??of temperature and pressure 

 a wide range of n flow (Qmax / Qmin, ≥ 20:1), good repeatability, high accuracy (up to 1.0), pressure loss, low starting flow rate up to 0.6m3 / h 

 n intelligent instrument coefficient of nonlinear correction 

 n Built-in pressure and temperature sensors, safety performance, compact structure, beautiful appearance 

 n instrument has explosion-proof protection, explosion-proof mark Exd Ⅱ BT4, Exia II CT4, with IP65 

 low power consumption of the n system, a 3.2V10AH lithium can be used continuously for more than 3 years 

 n meter factor, the total flow value is not lost on power-down decade 

 1.2 The main purpose 

 Intelligent Gas Turbine Flowmeter can be widely used in air, natural gas, coal gas, liquefied petroleum gas, biogas and other types of gas flow measurement. 

 Second, the main technical parameters 

 Table 2.1 Basic parameters: 

 Implementation of standards 
 Gas flow measurement in closed pipe - gas turbine flowmeter (GB/T8940-2003) 

 Meter-diameter (mm) and connection 
 25,40,50,65,80,100,125,150,200,250,300 using flange connection 

 25,40,50 can be threaded connection 

 Accuracy class 
 ± 1.5% R (± 1% R require special customization) 

 Turndown ratio 
 1:10; 1:20; 1:30 

 Instrument material 
 304 stainless steel impeller resistant ABS or high quality aluminum alloy converter: