Insertion vortex flowmeter

Description

Introduction: This instrument has excellent anti vibration performance, no zero drift, and high reliability. Through extensive waveform and frequency analysis of the vortex flowmeter over a long period of time, the optimal probe shape, wall thickness, height, probe rod diameter, and matching piezoelectric crystal are designed. Advanced CNC lathes are used for processing to ensure the technical parameters of coaxiality and smoothness, and special process processing is carried out to overcome the common problem of the inherent self oscillation frequency of the vortex flowmeter affecting the signal to the greatest extent possible. The plug-in vortex flowmeter mainly consists of three parts: pressure sensor, measurement circuit, and process connector. It can convert the physical pressure parameters of gases, liquids, etc. sensed by pressure sensors into standard electrical signals, which are supplied to secondary instruments such as indicator alarms, recorders, and regulators for measurement, indication, and process adjustment. In China, the plug-in vortex flowmeter currently used in small automation control is generally based on the piezoresistive principle, which means that the resistance of the varistor changes when it is compressed, amplified by an amplifier, and calibrated with standard pressure to perform pressure detection.

Technical parameters: ◆ Measurement medium: gas, liquid, vapor ◆ Connection method: flange card type, flange type, insertion type ◆ Diameter specification: flange card type. Diameter selection: 25, 32, 50, 80, 100. ◆ Flange connected caliber selection: 100, 150, 200 ◆ Flow measurement range: Normal measurement flow rate range: Reynolds number 1.5 × 104~4 × 106; Gas velocity of 5-50m/s; The normal measurement flow range for liquid is 0.5-7m/s. The measurement ranges for liquid and gas flow are shown in Table 2; The steam flow range is shown in Table 3. The measurement accuracy is 1.0 level, 1.5 level, and 2.5 level. The temperature of the measured medium is: normal temperature -25 ℃~100 ℃. High temperature -25 ℃~150 ℃ -25 ℃~250 ℃. The output signal is a pulse voltage output signal with a high level of 8~10V and a low level of 0.7~1.3V. The pulse duty cycle is about 50%, and the transmission distance is 100m. The pulse current remote transmission signal is 4-20mA, and the transmission distance is 1000m. The instrument is used in an environment with a temperature of -25 ℃~+55 ℃ and humidity: 5-90% RH50 ℃ ◆ Material: stainless steel, aluminum alloy ◆ Power supply: DC24V or lithium battery: 3.6V ◆ Explosion proof grade: intrinsic safety type: iaIIbT3-T6 Protection grade: IP65 Intelligent vortex flowmeter Product selection code: Flow range: ㎡/h LU-25 DN25 1~10 (liquid) 25~60 (gas) LU-32 DN32 1.5~18 (liquid) 15~150 (gas) LU-40 DN40 2.2~27 (liquid) 22.6~150 (gas) LU-50 DN50 4~55 (liquid) 35~350 (gas) LU-80 DN80 9~135 (liquid) 90~900 (gas) LU-100 DN100 14~200 (liquid) 140~1400 (gas) LU-150 DN150 32~480 (liquid) 300~3000 (gas) LU-200 DN200 56~800 (liquid) 550~5500 (gas)