Dual power LWQ gas turbine flowmeter LWQ-40 explosion-proof gas turbine flowmeter

Description :

　　This product is a new and mature gas flow meter with strong functionality, wide flow range, simple operation and maintenance, and easy installation and use. Its main technical indicators have reached the advanced level of similar foreign products.

　　1、 Characteristics:

　　1. The impeller has anti-corrosion function and can measure the flow rate of corrosive gases.

　　2. Adopting low-power single-chip microcomputer technology, the whole machine has powerful functions, low power consumption, and reliable performance.

　　3. The intelligent flow display header with non-linear accuracy compensation function has a correction formula accuracy better than ± 0.02%.

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

　　5. Using EEPROM for accumulated flow and instrument coefficient power failure protection, with a protection time greater than 10 years.

　　6. Using high-performance MCU central processing unit to complete data acquisition, processing, display and output, and accumulate instantaneous traffic.

　　7. Convenient human-machine interface implementation with screen display, data transmission in standard 485 format.

　　8. Adopting fully cemented carbide (tungsten carbide) shielded cantilever beam structure bearings, integrating rotating bearings and pressure bearings, greatly improving the bearing life, and can work in media with a small amount of sediment and dirt.

　　2、 Technical parameters:

　　Nominal diameter: pipeline type: DN20~DN300, plug-in type: DN500~DN2000;

　　Accuracy level: Pipeline type: ± 0.5 level, ± 1.0 level, Insertion type: ± 1.5 level, ± 2.5 level;

　　Environmental temperature: -20 ℃ to 50 ℃;

　　Medium temperature: Measurement of liquid: -20 ℃ to 80 ℃;

　　Measurement gas: -20 ℃ to 80 ℃;

　　Atmospheric pressure: 86KPa~106KPa

　　Nominal pressure: 1.6 Mpa, 2.5 Mpa, 6.4 Mpa, 25 Mpa;

　　Explosion proof grade: ExdIIBT4;

　　3、 Installation:

　　1. The flowmeter must be installed horizontally on the pipeline (with the pipeline tilted within 5 degrees), and the axis of the flowmeter should be concentric with the axis of the pipeline during installation, with the flow direction consistent.

　　2. The upstream pipeline length of the flowmeter should have an equal diameter straight pipe section of not less than 2D. If the installation site permits, it is recommended that the upstream straight pipe section be 20D and the downstream be 5D.

　　3. Requirements for piping: The inner diameter of the upstream and downstream piping at the flowmeter installation point should be the same as the inner diameter of the flowmeter.

　　4. Requirements for bypass pipes: In order to ensure that the maintenance of the flowmeter does not affect the normal use of the medium, shut-off valves should be installed on the front and rear pipelines of the flowmeter, and bypass pipes should be set up. The flow control valve should be installed downstream of the flowmeter. When using the flowmeter, the upstream shut-off valve must be fully opened to avoid unstable flow of fluid in the upstream section.

　　5. Requirements for external environment: When the flowmeter is installed indoors and must be installed outdoors, it must be protected from sunlight and rain. Lightning protection measures should be taken to avoid affecting the service life.

　　6. Requirements for impurities in the medium: In order to ensure the service life of the flowmeter, a filter should be installed before the straight pipe section of the flowmeter.

AfterSalesService :

• Dual power LWQ gas turbine flowmeter