KH-LGB series oxygen flowmeter, mainly for industrial pipe flow measurement of the fluid medium, such as a gas, liquid, steam and other media. It features a small pressure loss, large measuring range, high accuracy when measuring actual volume flow is almost unaffected by the liquid density, pressure, temperature and other parameters. No moving mechanical parts, so high reliability and low maintenance. Long-term stability of the instrument parameters. The biggest advantage of KH-LGB- oxygen flowmeter is particularly good vibration performance, no zero drift and high reliability. Through a lot of time on the waveform analysis and spectral analysis of the vortex flowmeter, Section Hao was designed to probe the best shape, thickness, height, diameter of the probe rod and with the support of a piezoelectric crystal, the use of advanced CNC lathe processing, ensure concentricity and finish machining and other technical parameters, with a special process to maximize the impact of the vortex flowmeter to overcome the inherent existence of the self-oscillation frequency signal this common problem. This is Section Hao companies in the production of technical vortex flowmeter unique advantages, making Section Hao company manufactured Vortex good amount of anti-vibration ability. Versatility ②LGB Series Intelligent Vortex flowmeter sensor is very strong, so that the sensor has good compatibility with advanced CNC machining equipment sensor meter body and bluff body, 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; can produce a 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 detection probe and vortex shedder installed separately, and high-temperature piezoelectric crystal sealed in the detection probe, not in contact with the measured medium, so FFM63 series vortex flowmeter has a simple structure, good versatility and high stability characteristics. ⑤ pulse signal or analog output signal 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 volume flow, vortex Street output signal is actually a linear relationship with the flow rate, that is proportional to the volume flow. The purpose of pressure and temperature compensation is in order to get the density of the fluid, multiplied by the volume flow mass flow rate is obtained, if the measured volume flow of gas do not need to compensate. ⑧ pressure loss. Measuring the flow of combustible gas with the 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, and only with the bluff body shape and size related. ⑩ wide range of applications, steam, gas, liquid flow can be measured. Technical parameters ● oxygen flowmeter to measure fluid: saturated steam, superheated steam, gases, liquids (avoid multiphase flow) ● measurement accuracy and repeatability: reproducibility of measurement accuracy fluid gas (including steam) 1.0 1.5 0.33% liquid Grade 0.5% ● measuring range limit fluid velocity (m / s) flow rate 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 ℃ (common type) ● structure types: a body vortex flowmeter ● Construction Material Part name Material sensor table 304 stainless steel, 316 stainless steel vortex of 304 stainless steel, 316 stainless steel 316L stainless steel rod detection probe 304 aluminum radiator temperature asbestos gaskets pads, nitrile rubber gaskets, graphite gaskets ● The first working power supply 3.6V lithium battery-powered mode (local display type) second power way 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 available ● Electrical Interface : M20 * 1.5 ● Protection class: IP65 ● Body treatment: a sensor body is made of stainless steel sheet blasting 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 process understanding all aspects of the product according to the installation instructions to ensure accurate measurement of the flow meter. A reasonable choice of installation options and environment away from strong electrical equipment, high-frequency equipment, high power switching equipment; avoid the effect of high temperature heat and radiation sources, avoid intense vibration place and highly corrosive environment, taking into account the easy installation and maintenance . 2, there must be sufficient upstream and downstream straight pipe upstream of the sensor installation point, if there is more than> 15. Tapered tube, then: straight pipe upstream ≥15D, downstream straight pipe ≥5D If the sensor is installed upstream of the point of> 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, downstream straight pipe upstream of the sensor mounting point ≥5D if on the same plane has two 90. Elbow, then: straight pipe upstream ≥25D, ≥5D downstream straight pipe upstream of the point if the sensor is installed on a different plane has two 90. Elbow, then: straight pipe upstream ≥40D, ≥5D downstream straight pipe 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 should not be less than the 50D, downstream should be not less than 5D. The inner diameter of the downstream pipe 3, mounted downstream of the pipe to be concentric with the sensor, coaxial deviation should be not less than 0.5DN sensor mounting point of the sensor diameter should be the same, it should meet the requirements of the following formulas: 0.98DN≤D≤ 1.05DN Where: DN ---- sensor diameter; D ---- pipe inside diameter. Flange seal between the sensor and the pad can not protrude into the pipe with an inner diameter slightly larger than the sensor diameter. 4, pipe vibration reduction measures to be taken to avoid the sensor mounted on the vibration of a strong pipeline, especially the lateral vibration. If forced to install, damping measures must be taken downstream of the sensor is set at 2D piping fastening device separately, and add anti-vibration pad. . Mounted on a horizontal pipe flow sensor is the most common installation method. When measuring gas flow, if measured gas contains a small amount of liquid, the sensor should be installed in the pipeline at the higher. When measuring liquid flow, if the measured liquid containing a small amount of gas at the sensor should be installed in the lower pipeline. 6. Sensor is installed to measure gas flow vertical duct, the sensor can be mounted in a vertical pipe, the flow limitation. If the measured gas containing a small amount of liquid, gas flow should be bottom up. When measuring the liquid flow rate, liquid flow should the bottom up: this does not add extra weight of the liquid on the probe. 7, side-mounted sensors to measure the level of the pipeline regardless of what kind of fluid, the sensor can be side-mounted on a horizontal pipe, especially 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 general, 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 sensor is in the pipeline have insulation installed to measure temperature steam, thermal insulation layer can not exceed a maximum of one-third of the height of the bracket. 10. When selecting measurement points and measurement points to be measured according to the need to measure pressure and temperature in the vicinity of the sensor, pressure points should 3-5D downstream of the sensor, temperature sensor at the point should 6-8D downstream. The correct wiring of the general principles of oxygen flowmeter: susceptible to electrical noise interference in place, the use of shielded cables. Shield should be connected to the amplifier reliable grounding screw or working in the control room connected to ground. At high or low temperatures, or on-site air containing oil, solvents or other corrosive gases, to adopt suitable for such special occasions shielded cable. Connection between the use of the output frequency of the signal frequency signal output flowmeters with other devices three-wire transmission, power supply is 24VDC ± 10% (or 12VDC), the minimum output load resistance circuit is 10KΩ, maximum capacitance 0.2UF. Wiring 4-20mA signal output 4-20mA signal output Vortex among other devices with the use of two-wire transmission, power supply is 24VDC ± 10%, the maximum load resistance output circuit for 600Ω. (Including cable resistance) structure consisting of oxygen flowmeter structure types and dimensions datasheet Vortex mainly by the converter (with enlarged board inside), brackets, vortex generator components (with triangular prism, within the probe) and Body composition, as shown below: Install accessories are: Au * flange, long bolts, nuts, etc., as shown below: ㈡FFM63 Series Vortex Flowmeter Dimensions