Oval Gear Flow Meter Installation and Operation Manual

Abstract: The information of the installation and operation instructions of the oval gear flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. 1. Product Overview Oval gear flowmeter is a high-precision measuring instrument used for continuous measurement of liquid flow in pipelines. It has a large measuring range, small pressure loss, strong viscosity adaptability, can measure high temperature, high viscosity liquid, easy calibration and installation. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the installation and operation instructions of the oval gear flowmeter. 1. Product Overview Oval gear flowmeter is a high-precision metering instrument used for continuous measurement of liquid flow in pipelines. It has many advantages such as large measuring range, small pressure loss, strong viscosity adaptability, can measure high temperature, high viscosity liquid, convenient calibration, easy installation, etc. It is the representative product of positive displacement flowmeter. LC series oval gear flowmeter is equipped with on-site pointer display and word wheel cumulative counting device, which can directly display the cumulative flow of liquid flowing through the pipeline. It is especially suitable for the metering of refined oil products. It is widely used in the flow measurement of non-corrosive media in petroleum, chemical, chemical fiber, transportation, commerce, food, medicine and health and other industrial sectors. 2. Product principle and structure The oval gear flowmeter is composed of a flow transmitter and a counting mechanism. The main part of the transmitter is composed of a metering chamber equipped with a pair of oval gear rotors and a sealed coupling. The counting mechanism includes a deceleration mechanism, a precision adjustment mechanism, a counter and an electric pulse transmitter. There are mainly a pair of oval gears and a cover plate in the measuring chamber to form a crescent-shaped cavity as a flow measurement unit. The oval gear is rotated by the pressure difference at the inlet and outlet of the flowmeter, so that the liquid at the inlet is continuously measured and sent to the outlet through the crescent-shaped cavity. The amount of liquid flowing through each revolution is the amount of the crescent cavity in the figure Four times, the total number of rotation of the oval gear and the speed of rotation are transmitted to the counting mechanism by the sealed coupling, and the total amount of liquid passing through the pipeline can be known through the pointer display and the accumulation of the word wheel. A pulse transmitter can also be installed in the counting mechanism, that is, an oval gear flowmeter with a transmitter. It is matched with the company's electronic display instrument, which can realize automatic remote transmission (quantitative, cumulative, instantaneous, etc.) Third, product general technology Parameters Main component material and nominal pressure Model Shell front cover Rear cover cover plate Oval gear shaft bushing Nominal pressure LC-A cast iron cast iron cast iron cast iron stainless steel oil-impregnated bronze rolling bearing 1.6 (MPa) Engineering material Remarks ℃ environment, otherwise it will be easily damaged. 2. The accuracy level is 0.5 and 0.2 (generally the medium temperature is -10℃~+60℃). 3. Use medium temperature: (ambient temperature can be -10℃~+60℃). -10℃~+60℃; under high temperature adjustment, the high temperature cooling cylinder can reach 60℃~200℃. 4. On-site explosion-proof grade of remote transmission display: ExiaⅡCT5, dⅡBT4. 5. The flow range is as follows: unit: m3/h model nominal diameter measured liquid viscosity mPa.s0.3~0.80.8~22~200200~10001000~2000LC- 10100.2-0.50.12~0.50.08-0.50.08-0.50.05-0.50.06-0.30.03-0.30.03-0.2LC-15150.75-1.50.5~1.50.3-1.50.3-1.50.15 -1.50.3-30.2-1.00.1-1.050.07-0.75LC-20201.5-31-30.5-30.5-30.3-31.5-150.4-2.10.2-2.10.15-1.5LC-25253-62-61-61 -60.6-61.56-150.8-4.20.4-4.20.3-3LC-40407.5-155-152.5-152.5-151.5-152.1-10.51.0-10.50.7-7.5LC-50 (Ⅱ) 508-248-244.8- 244.8-242.4-242.4-16.81.6-16.81.2-12LC- 65 (Ⅱ) 6520-4015-408-408-404-405.6-282.8-282-20LC-80 (Ⅱ) 8030-6020-6012-6012- 606-608.4-424.2-423-30LC-100(Ⅱ)(Ⅱ)(Ⅱ)(Ⅱ)(Ⅱ) 10050-10034-10020-10020-10010-10014-706-705-50LC-15015095-19064-19038- 19038-19019-19026.6-13313.3-1339.5-95LC-200200170-340114-34056-34056-34034-34047.6-23823.8-23817-170 Accuracy rating system 0.50.20.50.20.50.20.50 When the temperature is higher than 80°C, the maximum flow rate of the flowmeter is 90% of the original maximum flow rate of the flowmeter, and the minimum flow rate should be 120% of the minimum flow rate of the original flowmeter. Note 2: When the viscosity of the liquid to be measured is higher than 2000mPa.s, please consult the order. 6. Performance (error and pressure loss curve) 0.5 level flowmeter error and pressure loss curve Figure 1, aviation gasoline 0.7mPa.s 2, water 1mPa.s3, light diesel 5mPa.s4, transformer oil 20mPa.s0.2 level flow Meter error and pressure loss curve Figure 2. When any liquid reduces the flow rate range ratio, the accuracy of the flow meter can be improved by using the precision adjustment device. Fourth, LC series other special oval gear flow 1. High temperature flowmeter The high temperature flowmeter is equipped with a heat sink, and the specifications of the heat sink are as follows: small diameter high temperature radiator (DN10~40) large diameter high temperature radiator (DN50~100) T1T2T1T2 Note: In the model, T is a high-temperature flowmeter, but without a radiator, it is used for 60～120℃ without a transmitter; 200°C; T2 appears in the model as a high temperature flowmeter,Equipped with short radiator for 60～120℃.

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