Description of DN20 Spiral Vortex Flow Meter

Description :

　　This product has the advantages of high measurement accuracy, wide flow range, no movable parts, good anti vibration and anti pulsating flow performance, small size, light weight, and easy use.

　　1、 Ordering Notice:

　　1. When ordering this product, users should pay attention to the nominal diameter of the pipeline, flow range, nominal pressure, medium pressure, and medium temperature range

　　Choose appropriate specifications for the surrounding and environmental conditions, and indicate the explosion-proof level requirements for use in hazardous areas.

　　2. Flow meters are generally of the basic type, with industrial and mining pulse output and RS485 communication interface. If other accessory output functions are required, please specify them when ordering.

　　2、 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).

　　3、 Working principle:

　　Place two sets of sensors, A and B, in the flow field to simultaneously detect the frequency signal of vortex vibration and the interference signal caused by pipeline vibration. Due to pipeline vibration, sensors A and B detect common mode signals with the same phase and amplitude. The precession of the fluid vortex detected by sensors A and B is a differential signal with opposite phases. By using differential circuits to distinguish between two signals, suppressing common mode signals, amplifying differential mode signals, and further processing by the CPU, additional errors caused by pipeline vibration can be effectively eliminated.

　　4、 Product features:

　　No mechanical movable parts, not easily corroded, stable and reliable, long service life, long-term operation without special maintenance.

　　The shell is available in stainless steel and aluminum alloy options.

　　Built in pressure, temperature, and flow sensors, high safety performance, compact structure, and beautiful appearance; It can directly measure fluid pressure, temperature, and flow rate, and automatically track compensation and compression factor correction in real time.

　　Adopting advanced computer processing chips, it has high integration, small size, good performance, and strong overall functionality. It adopts a circuit micro power consumption design, with low overall power consumption. It can be powered by an internal battery (3.6VDC) or an external power supply (24VDC).

　　5、 Installation:

　　1. The operator should be familiar with the working principle, performance characteristics, detection points, and detection items of the vortex flowmeter.

　　2. The operator of the vortex flowmeter prints production and monitoring reports at regular intervals every day to timely reflect the production and operation situation in the factory.

　　3. Regularly conduct on-site inspections of the vortex flowmeter at each testing point and keep records. Any abnormal situations should be promptly addressed and reported.

　　4. During rainy weather, the on-site inspection of the vortex flowmeter should be carried out, and operators should pay attention to preventing electric shock.

　　5. All types of primary sensors for detecting spiral flow meters should be cleaned and scaled as required.

　　6. When detecting a malfunction in the vortex flowmeter, do not disassemble the transmitter and converter at will.

AfterSalesService :

• Description of DN20 Spiral Vortex Flow Meter