Vegetable oil meter basic parameters and measurement range and working pressure: meter diameter and connection 4,6,10,15,20,25,32,40 threaded connections (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 instruments Material 304, 316 (L) stainless steel measured medium temperature (℃) -20 ~ + 120 ℃ ambient temperature of -10 ~ + 55 ℃, relative humidity of 5% to 90%, atmospheric pressure 86 ~ 106Kpa output signal 4-20mADC current signal (KH-LWGY- □ C type) Power supply KH-LWGY- □ B type: Built-in 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) Protection class IP65 Explosion levels ExdIIBT6 meter diameter (mm) normal flow range (m3 / h) extended flow range (m3 / h) conventional withstand pressure (MPa) special pressure rating (MPa) (Act Lan 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 to 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 6.3,2.5 ~ 10 (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 vegetable oil meter installation Note: in order to ensure the correct selection of vegetable oil flowmeter turbine flowmeter better use . What choice should be based on the type of turbine flowmeter physical and chemical properties of the measured fluid medium to determine? The turbine meter diameter, flow range, lining materials, electrode materials and output current? Can adapt measured fluid the nature and flow measurement. 1, precision accuracy level function tests and functions according to measurement requirements and use the occasion to select the instrument accuracy class, so economical. Such as for trade settlement, custody transfer and energy measurement products occasions, should choose higher level of accuracy, such as 1.0, 0.5, or higher level; process control applications for select different accuracy classes according to the control requirements; some only about the process flow is detected, without making 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 choose inexpensive insertion turbine flow meter. 2, medium flow rate measuring medium, measuring range of the instrument with the caliber of measurable media in general, full-scale turbine flow meter can measure in the medium velocity 0.5-12m / s range selection, the range is wide. Select the meter size (diameter) is not necessarily the same process piping, should be considered whether the measured flow rate range within the range of flow rates to determine that when the pipe flow rate is low, can not meet the requirements of the flow meter or when this flow rate measurement accuracy can not be guaranteed, the We need to narrow instrument caliber, thereby increasing the flow rate of the tube to obtain satisfactory measurements. [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 inclination of 5 or less), the installation of the meter axis should concentric pipe axis, the flow to be consistent. Upstream of the meter pipe length should be not less than 2D straight pipe, etc., if the installation site promises recommend charging straight pipe upstream is 20D, downstream of the 5D. For piping requirements: meter installation point on the inner diameter of the flowmeter downstream pipe inner diameter of the same. On the bypass pipe requirements: In order to ensure the meter does not affect the normal use of the access medium in the longitudinal pipe meter should be installed off valve (valve), and should set up a bypass pipe. Flow control valves to be installed downstream of the flowmeter, globe valve installed upstream of the meter must use full, to avoid the upstream portion of the fluid flow phenomena generate instability. The requirements of the external environment: the best meter installed in the interior, must be installed in the outdoors, be sure to use sunscreen, rain lightning protection measures, so as not to affect the service life. The requirements for the 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 properties of the weld installation requirements: The user comes with a standard flange welded on the front pipe. With flow soldering is not allowed! Should be strictly removed before installing the meter pipe welding slag and other dirt, preferably with an equal diameter pipes (or bypass) instead of blowing pipe flowmeter. To ensure that the meter from damage during use. When installing the meter, the gasket between the flanges can be recessed into the pipe. Flowmeter grounding requirements: the flowmeter should be grounded, not shared with the strong electrical system ground. The requirements for explosion-proof products: in order to secure the normal use of the meter, the meter should review whether the explosion-proof use of the environment and user requirements set match, and the installation process, should strictly abide by the requirements of explosion-proof products, can not be changed by the user proof connection system, not free to open the instrument. Selection of the flow within the prescribed range, to prevent overspeed operation, in order to guarantee perfect accuracy and ensure the normal life. Before installing the flowmeter in the pipeline should clean debris: debris, welding slag, stones, dust, etc. is recommended to install 5 micron mesh filter upstream for blocking droplets and sand. The meter should be put into operation before the valve slowly to open, after opening the valve to prevent damage to the turbine instant impact airflow. Add oil should sign operation, the number of refueling according to the degree of cleanliness temperament may be, usually 2-3 times a year. Due to pressure test, blowing pipe or exhaust turbo overdrive cause, and turbine operation in reverse flow will likely cause damage to the meter. Before the meter runs do not allow to open the back cover, it changes the internal parameters, otherwise it will affect the normal operation of the flowmeter. CAUTION mounting pads to ensure that no protrusion into the pipe, in order to prevent interference of the normal flow measurement. Flowmeter pressure at the meter to collect taps in the calibration. What should be noted that the use of vegetable oil flow meter: 1 using each channel 1.1 in place, it should ensure that all the chips and debris have been cleared, the system has been purged, pressure, air flow into and boost to the flow inlet valve 1.2 open small turbine flowmeter upstream bypass valve 1.3 Slowly open the KH-LWGY small turbine flowmeter upstream bypass valve, slowly filling the gas turbine flowmeter downstream electric front until forced into the seal valve. Note: Pressure heavy shock or excessive pressure can damage the high-speed turbine flowmeter. In order to protect the gas turbine flowmeter, turbine flowmeter on the pressure to rise no more than 35kPa / s. As the scene can not measure pressure changes, the monitoring turbine flow meter can not be exceeded. 1.4 closing the bypass valve and shut-off valve small. 1.5 Turn the handwheel to force open the inlet valve seals. 1.6 Slowly open the mandatory electric turbine seal valve downstream of the meter (for at least 1 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 throughout pressurized system is complete, natural gas began to be metered. 2-line alignment of gas turbine flowmeter (working road and the main road to compare) 2.1 to ensure that the inlet and outlet valve of the main road is closed. 2.2 in accordance with the "1 each way using the" step 1.2,1.3,1.4, pressurized to the main road. 2.3 close the road to force electric outlet seal valve, slowly open the valve to force the seal than pipe, slowly open the main road to force electric outlet seal valve (preferably while doing three jobs). 2.4 gas passes through the work of road and the main road. Two turbine flowmeter can compare each other to check whether there is a large deviation. 2.5 when compared to the end, to turn the main road to the pipeline and two mandatory seal valve, open the valve outlet pipe (preferably at the same time to do three things). 2.6 Then work the way back to work. 3 car online using mobile calibration test gas turbine flowmeter 3.1 KH-LWGY ensure electric two calibration between the mouth forcibly seal valve in the closed state. 3.2 Calibration mouth open blind flange plate small ball, to ensure that no pressure inside the blank flange. Then remove the blank flange. 3.3 Mobile calibration and calibration port connected car. 3.4 in accordance with the "1 each way using the" step 1.2,1.3,1.4, pressurized to the main road. 3.5 close the road to force electric outlet seal valve, slowly open the valve to force the seal than pipe, slowly open the main road to force two calibration seal valve (preferably while doing these four work). 3.6 In this case, the gas flows through the sled base within two gas turbine flowmeter calibration and moving cars. 3.7 complete online calibration, the calibration port two valve closed, slowly open the pipeline than mandatory seal valve, slowly open the sealed road to force electric outlet valve (preferably while doing these four work). 3.8 Replacing the blind flange plate, do not forget to close the blind flange plate small ball. 3.9 Then work the way back to work.