Description of DN80 gas turbine flowmeter

Description :

　　This product is widely used in various industries such as petroleum, chemical, metallurgy, aviation, and scientific research. Due to its high instrument accuracy and good repeatability, it is suitable for trade measurement and industrial process testing.

　　1、 Technical parameters:

　　1. The flow range listed in the table is the flow range calibrated 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. It 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.

　　3、 Maintenance:

　　1. Before putting the flowmeter into operation, it is necessary to set the instrument coefficient and carefully check to ensure that the flowmeter wiring is correct and well grounded before power can be transmitted.

　　2. Regularly clean, inspect, and recalibrate the flowmeter. Flow meters with lubricating oil or cleaning solution injection ports should be regularly filled with lubricating oil or cleaning solution according to the instructions to maintain the good operation of the impeller.

　　3. Monitor and display the condition of the instrument, and promptly check if there are any abnormalities in the instrument readings.

　　4. Keep the filter unobstructed. The filter is blocked by impurities, which can be judged by the increase in the pressure gauge reading difference at its inlet and outlet. If there is a blockage, it should be promptly eliminated, otherwise the flow rate will be severely reduced.

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• Description of DN80 gas turbine flowmeter