Dual power supply DN32 spiral vortex flowmeter

Description :

　　Dual power supply DN32 spiral vortex flowmeter

　　This product has the advantages of strong functionality, wide flow range, simple operation and maintenance, and easy installation and use. It is currently the product for natural gas transmission and distribution measurement and trade measurement in oil fields and cities.

　　1、 Measurement principle:

　　When the fluid flow sensor along the axial direction is fed in, it is forced to rotate around the centerline by the vortex generator, generating a vortex flow. The vortex flow spirals in the Venturi tube and reaches the contraction section where it suddenly throttles, accelerating the vortex flow. When passing through the diffusion section, the vortex center precesses along a conical spiral line. At this point, the precession frequency of the vortex center through the detection point is proportional to the flow velocity of the fluid. The precession frequency signal of the vortex flow detected by the piezoelectric sensor is amplified, filtered, and shaped before being converted into a flow value for on-site display or signal selection.

　　2、 Main features:

　　1. Built in pressure, temperature, and flow sensors with high safety performance, compact structure, and beautiful appearance.

　　2. Display temperature, pressure, instantaneous flow rate, and cumulative flow rate on site.

　　3. By adopting a new type of signal processing amplifier and unique filtering technology, the interference signals generated by pressure fluctuations and pipeline vibrations are effectively eliminated, greatly improving the anti-interference ability of the flowmeter and ensuring excellent stability for small flow rates.

　　4. Unique time display and real-time data storage functions.

　　5. The whole machine has extremely low power consumption and can operate for a long time with internal battery power supply, making it an ideal on-site display instrument without the need for external power supply.

　　6. The anti-theft function is reliable, with password protection to prevent parameter changes.

　　7. The header can rotate 180 degrees freely, making installation convenient.

　　Dual power supply DN32 spiral vortex flowmeter

　　3、 Technical parameters:

　　1. The flow range is the flow range verified at the time of product delivery (at room temperature and atmospheric pressure, the medium is air 1.205Kg/m3); As the pressure increases, the flow range also expands.

　　2. Standard state conditions; P=101.325kPa，T=293.15K。

　　3. Usage conditions: Environmental temperature: -30~+60 ℃, medium temperature: -20~+80 ℃, relative temperature: 5%~95%, atmospheric pressure: 86kPa~106kPa.

　　4. Electrical performance indicators

　　Working power supply: external power supply:+24VDC, internal power supply: 3.6V lithium battery, overall energy consumption: external power supply,<1W, internal power supply,<0.3MW, lithium battery can be used for more than two years.

　　Output mode: frequency signal, 4-20mA signal, RS485 communication (capable of transmitting temperature, pressure, instantaneous flow rate, and cumulative flow rate parameters).

　　4、 Installation:

　　1. Try to avoid strong electrical equipment, high-frequency equipment, and strong switching power supply equipment as much as possible. The power supply of the instrument should be separated from these devices as much as possible.

　　2. Avoid direct effects from high-temperature heat sources and radiation sources. If installation is necessary, insulation and ventilation measures must be taken.

　　3. Natural gas flow meters should avoid high humidity and highly corrosive gas environments. If installation is necessary, ventilation measures must be taken.

　　4. Installation on pipelines with strong vibration should be avoided as much as possible. If installation is necessary, pipeline fastening devices must be installed at 2D upstream and downstream locations, and anti vibration pads must be added to enhance the anti vibration effect.

　　5. When installing indoors, attention should be paid to waterproofing when installing outdoors. Special attention should be paid to bending the cable into a U-shape at the electrical interface to prevent water from entering the amplifier housing along the cable.

　　There should be ample space around the installation point for wiring installation and regular maintenance.

AfterSalesService :

• DN32 spiral vortex flowmeter