KH-LWGY series is to draw a new generation of fuel flow meter turbine flow meter flow meter at home and abroad advanced technology and optimized design, with a simple structure, lightweight, high precision, reproducibility is good, responsive, easy to use features to install and maintain, and widely used measure in closed conduits and stainless steel 1Cr18Ni9Ti, 2Cr13 and corundum AI2O3, carbide corrode, and no fibers, particles and other impurities, kinematic viscosity at operating temperature is less than 5 × 10-6m2 / s of liquid, for sports viscosity greater than 5 × 10-6m2 / s of liquid, solid solution after the flowmeter calibration use. If the meter has special functions and display the matching can also be quantitative control, excessive alarm, etc., are flow metering and energy saving ideal instrument .KH-LWGY type turbine flowmeter is a precision flow measurement instruments, and the corresponding flow totalizer meter can be used to measure flow and matching the total amount of liquid. Widely used to measure petroleum, chemical, metallurgy, research and other fields, the control system. Equipped with a turbine flow sensor sanitary fittings can be used in the pharmaceutical industry. Integrated turbine meter structure explosion-proof design, you can display the total flow, instantaneous flow rate and the percentage of full scale flow. The battery is long-lasting lithium batteries, single-function calculator watch battery life of up to five years, multi-function display meter battery life can be up to 12 months. Numerous integrated flow meter can display units, have cubic gallons, liters, standard cubic meters, the standard 升等, you can set a fixed pressure and temperature parameters on gas to compensate for the pressure and temperature parameters changed little occasion You can use this instrument for fixed compensation totalizer. Technical performance liquid turbine flowmeter for higher viscosity hydraulic oil, engine oil, small-caliber specifications can be calibrated using actual flow. KH-LWGY Series Features High fuel flowmeter accuracy, generally up to ± 1% R, ± 0.5% R, high-precision up to ± 0.2% R; · repeatability, short-term repeatability of up to 0.05% to 0.2 %, precisely because with good repeatability, such as frequent calibration or calibration available online high accuracy, in trade settlement is the preferred meter; · output pulse frequency signal suitable for the measurement of total and with the computer connection, no zero drift, strong anti-jamming capability; · obtain a high frequency signal (3 ~ 4kHz), signal resolution and strong; · wide range of degrees, medium and large caliber up to 1:20, small caliber 1:10 ; * Compact and lightweight, easy installation and maintenance, flow capacity; · For high-pressure measurements, the meter body without having to cut, easy made high-pressure type instrument; · special type of sensor types, can be designed according to the special needs of all kinds special type sensors, such as low temperature, two-way type, underground type, sand and other special type; * can be made to insert type, suitable for large-diameter measurement, pressure loss, low price, do not remove the drying, easy installation and maintenance. The basic parameters and measuring ranges and working pressure: Connection 4,6,10,15,20,25,32,40 meter diameter and threaded connection (15,20,25,32,40) 50,65,80,100 , 125,150,200 flange connection accuracy class ± 0.5% R turndown ratio 1:10; 1:15; 1:20 304 meter stainless steel material, 316 (L) stainless steel measured medium temperature (℃) -20 ~ + 120 ℃ ambient conditions of temperature -10 ~ + 55 ℃, relative humidity 5% ~ 90%, atmospheric pressure is 86 ~ 106Kpa output signal 4-20mADC current signal (KH-LWGY- □ C type) power supply KH-LWGY- □ B type : comes with lithium battery (can be used continuously for 3 years); KH-LWGY- □ C type: + 24VDC signal transmission line 2 × 0.3 (two-wire) transmission distance ≤1000m signal line interface thread M20 × 1.5 (KH-LWGY- □ C type) Explosion levels of protection IP65 ExdIIBT6 meter diameter (mm) normal flow range (m3 / h) extended flow range (m3 / h) General withstand pressure (MPa) special pressure rating (MPa) (flange connection ) DN 4 0.04 ~ 0.25 0.04 ~ 0.4 6.3 12,16,25 DN 6 0.1 ~ 0.6 0.06 ~ 0.6 6.3 12,16,25 DN 10 0.2 ~ 1.2 0.15 ~ 1.5 6.3 12,16,25 DN 15 0.6 ~ 6 0.4 ~ 8 6.3,2.5 (flange) 4.0,6.3,12,16,25 DN 20 0.8 ~ 8 0.45 ~ 9 6.3,2.5 (flange) 4.0,6.3,12,16,25 DN 25 1 ~ 10 0.5 ~ 10 6.3 2.5 (flange) 4.0,6.3,12,16,25 DN 32 1.5 ~ 15 0.8 ~ 15 6.3,2.5 (flange) 4.0,6.3,12,16,25 DN 40 2 ~ 20 1 ~ 20 6.3,2.5 (Flange) 4.0,6.3,12,16,25 DN 50 4 ~ 40 2 ~ 40 2.5 4.0,6.3,12,16,25 DN 65 7 ~ 70 4 ~ 70 2.5 4.0,6.3,12,16,25 DN 80 10 ~ 100 5 ~ 100 2.5 4.0,6.3,12,16,25 DN 100 20 ~ 200 10 ~ 200 2.5 4.0,6.3,12,16,25 DN 125 25 ~ 250 13 ~ 250 1.6 2.5,4.0 DN 150 30 ~ 300 15 ~ 300 1.6 2.5,4.0 DN 200 80 ~ 800 40 ~ 800 1.6 2.5,4.0 KH-LWGY series fuel flow meter installed Note: in order to ensure the correct selection of fuel flow meter turbine flowmeter to better use. What kind of turbine flowmeter selection should be based on the physical and chemical properties of the measured fluid medium to decide? Turbine meter diameter, flow range, lining materials, electrode materials and the output current, etc.? Can adapt to the measured fluid the nature and flow measurement requirements. 1, precision function tests measuring accuracy class and functions according to the requirements and use the occasion to select the instrument accuracy class, so economical. Such as for trade settlement, product transfer and energy measurement occasions, should choose higher level of accuracy, such as 1.0, 0.5, or higher level; process control applications used to select a different level of accuracy under the control requirements; some only about the process flow is detected, do not need precise control and measurement of the occasion, you can choose a slightly lower level of accuracy, such as 1.5, 2.5, or 4.0, then you can use inexpensive insertion turbine flowmeter. 2, when the media measuring medium velocity measurement range of the instrument with the caliber of measurable media in general, full-scale flow turbine flowmeter can measure the medium velocity within 0.5-12m / s range to choose from, the range is wide. Select the meter specification (caliber) is not necessarily the same process piping, should be considered to measure flow velocity range is within the range determined that when the pipe is low flow rates, flow meter can not meet the requirements, or at this flow rate measurement accuracy can not be guaranteed, the need to narrow meter-diameter, thereby increasing the flow rate of the tube to give a satisfactory measurement results. [2] Installation To ensure accurate measurement of turbine flowmeter must correctly select the installation location and method of straight pipe requirements: level meter must be installed in the pipe (pipe is inclined at 5 or less), when you install the meter axis should concentric pipe axis, the flow to be consistent. Flowmeter upstream pipe length should be not less than 2D straight pipe sections, etc., if the installation site promises recommend charging straight pipe upstream of 20D, downstream of the 5D. Requirements for piping: meter installation point on the downstream pipe inner diameter and the inner diameter of the same meter. On the bypass pipe requirements: In order to ensure the maintenance when the meter does not affect the normal use of the media on the meter should be installed around the pipe cut off valve (valve), and should set the bypass pipe. Flow control valves to be installed downstream of the meter, the meter cut-off valve must be installed upstream of the use of open, to avoid generating instability in the upstream portion of the fluid flow phenomena. The requirements of the external environment: the best flowmeter is installed in the room, must be installed in the outdoors, be sure to adopt sun, rain lightning protection measures, so as not to affect the service life. Requirements for medium containing impurities: In order to ensure the life of the meter should be installed before the filter straight pipe flowmeter. Installation place: the meter should be installed in ease of maintenance, no strong electromagnetic interference and thermal radiation of places to install welding requirements: user reprovision a pair of standard pipe flanges welded to the front and rear. With flow soldering is not allowed! Before installing the meter should be strictly Clear pipeline welding slag and other dirt, preferably with equal diameter pipes (or bypass) instead of the meter purge pipes. To ensure that the meter is not damaged during use. When installing the meter, the gasket between the flanges can not be recessed into the pipe. Flowmeter grounding requirements: meter should be grounded, not shared with the strong electrical system ground. For the requirements of explosion-proof products: In order to secure the normal use of the instrument, you should review whether the explosion-proof type flowmeters use environment-proof requirements set out in line with the user, and the installation process, should strictly abide by the requirements of the national explosion-proof products, shall not be changed by the user Explosion-proof system connections are not free to open the instrument. Selection of flow within the prescribed range, to prevent overspeed operation, in order to guarantee perfect accuracy and ensure the normal life. Before installing the pipeline flow meter should clean up debris: fragments, welding slag, rocks, dust, etc. is recommended to install 5 micron mesh filter for blocking upstream droplets and sand. Flowmeter should slowly be put into operation before the valves open, after opening the valve to prevent damage to the turbine instant impact airflow. Add oil should sign operation, depending on the number of refueling extent temperament clean, and generally 2-3 times a year. Due to pressure test, purge pipe or exhaust turbo overdrive cause, and a turbine will operate in reverse flow may damage the meter. Before the meter runs do not allow arbitrary open rear cover, modifiers inside the parameters, otherwise it will affect the normal operation of the flowmeter. Carefully install the gasket, make sure there is no protrusion into the pipe to prevent interfering with the normal flow measurement. To acquire pressure meter on the meter taps during calibration. What should be noted when using the fuel flow meter: 1 each way using 1.1 installation in place, should ensure that all the chips and debris have been removed, the system has been purged, pressure, air flow into and boost to the flow inlet valve 1.2 opens a small turbine flowmeter upstream bypass valve 1.3 Slowly open KH-LWGY small turbine flowmeter upstream bypass valve, the gas turbine flowmeter slowly filling up before sealing ball valve downstream of the electric forced into. Note: Pressure severe shock or excessive pressure can damage the high-speed turbine flowmeter. In order to protect the gas turbine flowmeter, pressure is applied to the turbine flowmeter on the rise should not exceed 35kPa / s. As the site can not measure pressure changes, the monitoring turbine flow meter can not be overrun. 1.4 Close the bypass valve and globe valve small. 1.5 Turn handwheel to force open the inlet valve seal. 1.6 Slowly open the downstream turbine flowmeter electric forced sealing valve (for at least one minute), preferably using a manual switch on the actuator must be careful not to overdrive the turbine flowmeter. 1.7 by 1.2-1.6 steps, the entire pressurized system is completed, natural gas began to be metered. 2 online than on gas turbine flowmeter (working road and the main road for comparison) 2.1 inlet and outlet valves to ensure that the main road is closed. 2.2 According to "1 each way using the" steps 1.2,1.3,1.4, pressurized to the main road. 2.3 close the electric forced Road exit seal valve, slowly open the mandatory seal valve on the pipeline than slowly forced open the main road electric outlet seal valve (preferably while doing three jobs). 2.4 gas passes through the work of the road and the main road. Two turbine flowmeter can be compared with each other right, to check whether there is a large deviation. 2.5 when compared to the end, turn off the road than on the tube and the main road to the two mandatory seal valve, open the valve outlet pipe (preferably while doing three jobs). 2.6 Then work the way back to work. 3 car online with a mobile calibration calibration gas turbine flowmeter KH-LWGY 3.1 ports to ensure that the calibration between the two electric forced sealing valve in the closed state. 3.2 Calibration mouth open board small blind flange ball valve, blind flange plate to ensure no internal pressure. Then remove the blind flange plate. 3.3 Move calibration and calibration port connected car. 3.4 According to "1 each way using the" steps 1.2,1.3,1.4, pressurized to the main road. 3.5 close the electric forced Road exit seal valve, slowly open the mandatory seal valve on the pipeline than slowly forced open the main road to the two calibration seal valve (preferably while doing these four work). 3.6 In this case, the gas flows through the skid base within two gas turbine flowmeter calibration and move the car. 3.7 After completion of the online calibration, calibration mouth shut two ball valves, slowly open the pipeline than mandatory seal valve, slowly open the exit road electric forced sealing valve (preferably while doing these four work). 3.8 The blind flange plate Replace, do not forget to close the blind flange plate small ball. 3.9 Then work the way back to work.