KH-LGB series methane flow meters, mainly for industrial pipe flow measurement fluid medium, such as a gas, liquid, steam and other media. It features small pressure loss, large measuring range, high accuracy when measuring actual volume flow is almost unaffected by fluid density, pressure, temperature and other parameters. No moving mechanical parts, thus high reliability and low maintenance. Instrument parameters can be long-term stability. The biggest advantage of KH-LGB- methane flowmeter is particularly good anti-vibration performance, no zero drift, and high reliability. Through a lot of time on the waveform analysis and spectral analysis of vortex flowmeter, Section Hao have designed the best probe shape, thickness, height, diameter of the probe rod and with the support of a piezoelectric crystal, the use of advanced CNC lathe processing, to ensure concentricity and finish machining and other technical parameters, with a special process to maximize the impact of the vortex flowmeter overcome the inherent existence of the self-oscillation frequency signal this common problem. This is Section Hao companies in terms of production technology vortex flowmeter unique advantages, making Section Hao company manufactured the amount of vortex flowmeter has a good vibration resistance. Versatility ②LGB Series Intelligent Vortex flowmeter sensor is very strong, so that the sensor has good compatibility with advanced CNC machining equipment sensor body and the vortex shedder table, to ensure precision, so that the components (especially vortex shedder) of versatility, thus truly replacement parts will not affect the reproducibility and accuracy of the sensor; produce strong and stable vortex signal. ③ simple solid structure, no moving parts, high reliability, ease of use and maintenance. ④ detection elements are not in contact with the medium, stable performance, long life sensor uses a detection probe and the vortex shedder installed separately, and high-temperature piezoelectric crystals sealed within the detection probe, no contact with the measured medium, so FFM63 series vortex flowmeter has a simple structure, common good and high stability characteristics. ⑤ pulse signal or analog signal output proportional to flow, no zero drift, high accuracy, convenience and a wide range of computer networking ⑥ measurement, turndown ratio of up to 1:10 ⑦ without compensation vortex flowmeter to measure the volume flow, vortex Street output signal is actually a linear relationship with the flow velocity, which is proportional to the volume flow. The purpose of pressure and temperature compensation in order to get the density of the fluid, the volume flow rate is obtained by multiplying the mass flow rate, if the measurement of the volume flow rate of the gas does not need to compensate. ⑧ pressure loss. Measuring the flow of combustible gases with caliber DN50 vortex flowmeter, if the maximum flow within the pipe Qmax = 200m3 / h, the pressure loss of the sensor is: △ P = 1.08 × 10-6 ρv2 (kPa) = 0.605 KPa ⑨ in within a certain range of Reynolds numbers, the flow characteristics from the fluid pressure and temperature, viscosity, density, impact, composition, only the vortex shape and size of the relevant body. ⑩ wide range of applications, steam, gas, liquid flow can be measured. Technical parameters ● methane measuring fluid flow meter: saturated steam, superheated steam, gases, liquids (avoid multiphase flow) ● Measurement Accuracy and Repeatability: Repeatability accuracy measuring fluid gas (including steam) 1.0 1.5 0.33% liquid Grade 0.5% ● measuring fluid flow rate measurement range limit (m / s) velocity limit (m / s) gas (including steam) 770 Liquid 0.7 7 ● rated pressure: 1.6MPa, 2.5MPa, 6.3MPa ● Fluid temperature: -40 ℃ ~ 250 ℃ (common type), 100 ℃ ~ 350 ℃ (ordinary type) ● Type of construction: an integrated vortex flowmeter ● Construction Material Part name Material sensor meter body 304 stainless steel, 316 stainless steel vortex shedder 304 stainless steel, 316 stainless steel detection probe 316L stainless steel rod 304 aluminum radiator temperature gasket asbestos mats, nitrile rubber gaskets, graphite gaskets ● The first working power supply 3.6V lithium battery-powered mode (local display type) a second power supply mode 24VDC (or 12VDC) second power mode 24VDC (or 12VDC) or 3.6V lithium battery-powered dual power supply ● Output signal: three output pulse output, 4 ~ 20mA current output, RS485 communications, and other electrical interface options ● : M20 * 1.5 ● Protection class: IP65 ● Body Treatment: Body made of stainless steel sandblasted sensor amplifier shell using spray. ● Ambient temperature: -35 ℃ ~ 60 ℃ (no LCD), - 5 ℃ ~ 60 ℃ (with LCD) ● Relative humidity: 5% ~ 95 ℃ installation of vortex flowmeter vortex flowmeter require many kinds of structure installation, maintenance personnel need to understand the specific structure of the installed meter conversion, characteristics and traffic signals, signal transmission to understand all aspects of the process, according to the product manual for installation, in order to ensure accurate measurement of the flow meter. 1, a reasonable choice to install workplace and environmental away from strong electrical equipment, high-frequency equipment, strong power switching devices; avoid the effect of high temperature heat and radiation, and avoid strong vibration place and highly corrosive environment, taking into account easy installation and maintenance . 2, there must be sufficient upstream and downstream straight pipe upstream of the sensor mounting point if there is> 15. Tapered tube, then: straight pipe upstream ≥15D, downstream straight pipe ≥5D If the sensor is installed upstream of the point greater than> 15. Diverging tube, then: straight pipe upstream ≥18D, downstream straight pipe ≥5D If the sensor is installed upstream of the point 90. Elbow or T-joints, then: straight pipe upstream ≥20D, ≥5D downstream straight pipe upstream of the sensor mounting point if on the same plane has two 90. Elbow, then: straight pipe upstream ≥25D, downstream straight pipe ≥5D If the sensor is installed upstream of the point on a different plane has two 90. Elbow, then: straight pipe upstream ≥40D, downstream straight pipe ≥5D regulating valve should be installed in a location other than the downstream 5D sensor, if the sensor must be installed upstream of the upstream sensor straight pipe shall not be less than 50D, downstream should be not less than 5D. The inner diameter of the downstream pipe 3, the pipe is installed downstream of the sensor to be concentric, coaxial deviation should not be less than 0.5DN sensor mounting point of the sensor diameter should be the same, which should satisfy the requirements of the formula: 0.98DN≤D≤ 1.05DN formula: DN ---- sensor diameter; D ---- pipe inside diameter. Between the sensor and the flange seal pad can not protrude into the pipe with an inner diameter slightly larger than the sensor diameter. 4, the pipeline to take measures to reduce vibration sensor mounted on a vibration to avoid a strong pipeline, especially the lateral vibration. If forced to install, damping measures must be taken, at the 2D sensor downstream pipe fastening device is provided separately, and add anti-vibration pad. . Mounted on a horizontal pipe flow sensor is the most common installation method. When measuring gas flow, if the measured gas contains a small amount of liquid, the sensor should be installed in the pipeline at the higher. When measuring liquid flow rate, if the measured liquid containing a small amount of gas, the sensor should be installed at lower pipeline. 6. Sensor measuring the gas flow in the vertical duct is installed, the sensor can be mounted in a vertical pipe, the flow limitation. If the measured gas contains a small amount of liquid, gas flow should be bottom up. When measuring the liquid flow, the liquid flows upward by following: Thus the extra weight of the liquid will not be attached to the probe. 7, side-mounted sensors measure no matter what the level of the fluid conduit, the sensor can be mounted on the side of a horizontal pipe, particularly the measurement of superheated steam, saturated steam and cryogenic liquids, if conditions allow the best use of side-mounted, so that the temperature of the fluid less affected by the amplifier. 8. Sensor is not recommended in normal circumstances flip horizontal pipe with this installation method. This installation method is not generally used to measure gas, superheated steam. Can be used to measure the saturated steam, suitable for measuring the temperature of liquid or circumstances require regular cleaning of the pipe. 9. When the sensors have insulation on pipes installed to measure temperature steam, insulation must not exceed a maximum of one-third of the height of the bracket. 10. When selecting measurement points and measurement points to be measured in accordance with, the need to measure pressure and temperature in the vicinity of the sensor, pressure sensor at a point downstream should 3-5D, the temperature at the point should 6-8D downstream from the sensor. Correct wiring general principle of vortex flowmeter: in places susceptible to electrical noise, use shielded cables. Shield should be reliably connected to the amplifier is connected to the ground screw or ground work in the control room. At high or low temperatures, or on-site air containing oil, solvents or other corrosive gases, to adopt suitable for this special occasion, shielded cables. Connection between the use of the frequency of the output signal frequency of the signal output from the flow meter and other equipment three-wire transmission, power supply is 24VDC ± 10% (or 12VDC), the minimum load resistance output circuit is 10KΩ, maximum capacitance 0.2UF. Wiring 4-20mA signal output 4-20mA output signal vortex flowmeter among other devices with the use of two-wire transmission, power supply is 24VDC ± 10%, the maximum load resistance output circuit is 600Ω. (Including cable resistance) structure vortex flowmeter types and dimensions of the structure of the data table vortex flowmeter is mainly composed of the converter (with enlarged board inside), brackets, vortex generator assembly (with a triangular prism, probe) and table body composition, as shown below: Installation accessories include: a concave * flanges, long bolts, nuts, etc., as shown below: ㈡FFM63 Series Vortex Flowmeter Dimensions