DN80 liquid crystal display gas turbine flowmeter

Description :

　　DN80 liquid crystal display gas turbine flowmeter

　　This product has the advantages of high precision, good repeatability, simple structure, wide measurement range, small volume, light weight, low pressure loss, and easy maintenance. It can be widely applied in industries such as petroleum, chemical, metallurgical, and urban gas pipeline networks. Especially in urban gas metering, transmission and distribution network metering, and gas pressure regulating station metering, it has been widely used.

　　1、 Characteristics:

　　Wide measurement range, lower limit flow rate below 0.5m/s, low pressure loss, and strong impact resistance of the impeller.

　　It has high resistance to electromagnetic interference and vibration, and adopts fully sealed isolation protection for self-lubricating bearings, with reliable performance and long working life.

　　Adopting advanced ultra-low power single-chip microcomputer technology, the whole machine has strong functions, low power consumption, and superior performance. Intelligent flow display with non-linear accuracy compensation function. Correction formula

　　The accuracy is better than ± 0.02%.

　　The instrument coefficient can be set online through buttons and displayed on an LCD screen, which is intuitive, clear, and highly reliable.

　　Using EEPROM for power down protection of accumulated flow and instrument coefficient. The protection period is greater than 10 years.

　　Pressure compensation can be performed under stable pressure conditions of the measured gas.

　　DN80 liquid crystal display gas turbine flowmeter

　　2、 Main technical parameters:

　　Flow meter specifications, basic parameters, and performance indicators

　　Accuracy: Level 1.0, Level 1.5;

　　Usage conditions:

　　1. Environmental temperature -20 ℃~50 ℃;

　　2. Relative temperature: 5% to 95%;

　　3. Temperature of the tested medium: -20 ℃ to 80 ℃;

　　4. Atmospheric pressure: 86Kpa to 106Kpa.

　　3、 Installation:

　　(1) In order to eliminate the influence of liquid vortex and uneven cross-sectional flow velocity on measurement, necessary straight sections or rectifiers should be installed at the inlet and outlet of the sensor.

　　(2) In order to remove impurities from the fluid, ensure the normal operation of the sensor, and improve the lifespan of the sensor, a filter with a mesh size of 3-9 mesh/cm2 should be installed on the pipeline in front of the sensor. In general, the mesh with a larger diameter is sparse, while the mesh with a smaller diameter is dense. To ensure the normal operation of the sensor, the mesh size of the filter should also be selected according to the actual usage situation.

　　(3) When welding the inlet flange of the sensor, it is necessary to pay attention to the absence of protruding parts inside the pipe. When connecting the inlet flange, the outer circumference of the two flanges should be completely aligned, and the gasket should not be exposed inside the pipe. Eccentric reducing joints will cause uneven distribution of flow velocity, so they cannot be used.

　　(4) In order to ensure the maintenance needs under working conditions, shut-off valves (globe valves) should be installed on the pipelines before and after the transmitter, and bypass pipelines should also be set up. The flow control valve should be installed downstream of the sensor.

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• DN80 gas turbine flowmeter