Explosion proof domestically produced spiral vortex flowmeter, domestically produced cast aluminum spiral vortex flowmeter

Description :

　　This product is widely used in industries such as petroleum, chemical, power, metallurgy, and urban gas supply. It is currently the product for measuring and trading natural gas transmission and distribution in oil fields and cities.

　　1、 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).

　　2、 Characteristics:

　　1. Integrating high-precision temperature, pressure, and flow sensors with an intelligent flow integrator, it can detect the temperature, pressure, and flow of the medium, and perform automatic flow tracking compensation and compression factor correction, directly detecting the standard volume flow rate and total standard volume of the gas.

　　2. Adopting advanced microcontroller technology and high-performance integrated chips, the whole machine has powerful functions and superior performance.

　　3. The circuit adopts surface mount technology, with a compact structure and high reliability.

　　4. Adopting advanced low-power technology, both internal and external power sources can work, resulting in low overall power consumption.

　　5. Adopting a high contrast LCD display, it can display the standard volume total, standard instantaneous flow rate, frequency percentage corresponding to the standard volume flow rate, battery capacity display symbol, temperature value, pressure value, and date, with fault display alarm.

　　6. Adopting floating-point operations and automatic correction of eight segment instrument coefficients, with fault self diagnosis and alarm functions.

　　7. The flowmeter is equipped with pulse signal output and can also output 4-20mA standard analog signal according to user needs.

　　3、 Attention:

　　1. Spiral vortex flowmeter cannot be installed in situations with strong vibration, and when the pipeline is long, the vibration generated by the pipeline must be eliminated upstream and downstream of the sensor.

　　2. When using an external power source, the flowmeter must have a reliable grounding and must not share the ground wire with the high-voltage system. During pipeline installation or maintenance, the ground wire shared by the welding system must not be overlapped with the flowmeter.

　　3. When installed outdoors, the upper part should be covered to prevent rainwater from entering or direct sunlight from affecting the service life of the vortex flowmeter.

　　4. In order to facilitate maintenance and not affect the normal transportation of fluids, a bypass pipeline must be installed. When the gas contains larger particles or longer fiber debris, a filter must be installed on the vortex flowmeter.

　　5. Flow meters should be installed in accordance with relevant explosion-proof regulations, and safety regulations should be followed during installation and maintenance.

　　6. There should be no strong external magnetic field interference or strong mechanical vibration around the flowmeter. It should avoid the influence of high temperature heat sources and radiation heat sources, as well as strong corrosive environments.

　　7. Do not open the flowmeter or twist the various lead interfaces and temperature and pressure sensor interfaces arbitrarily.

　　8. In order to avoid affecting the normal transportation of fluids and facilitate maintenance, it is required to install bypass pipelines and ensure a straight pipe section with a front ≥ 3DN and a rear ≥ 1DN.

AfterSalesService :

• Explosion proof domestically produced spiral vortex flowmeter