This product consists of two parts: a sensor and a display instrument. It can be used to measure the instantaneous flow rate and cumulative total amount of gas when paired with the corresponding flow integrator or display instrument.
1、 Selection:
When selecting a flow meter, users should choose the appropriate model and specifications based on the nominal pressure of the pipeline, high pressure of the medium, medium temperature, medium composition, flow range, and signal output requirements.
In order to achieve optimal performance of the flowmeter, the flow rate range of the flowmeter should be within the Qmax range of (20% to 80%), which is more appropriate.
The signal output mode of the flowmeter at the factory: working condition pulse signal output (three wire system), standard flow signal (IC card) output, or RS-485 communication output. If other output functions are required, please specify when placing an order.
2、 Performance parameters:
1. Measurement medium: natural gas, coal gas, nitrogen, compressed air and other gases;
2. Nominal caliber: DN20~DN300mm;
3. Accuracy: ± 1.0%; Repeatability: better than ± 0.3%;
4. Rated working pressure: 1.6Mpa;
5. Medium temperature: -30 ℃~+60 ℃;
6. Power supply: Built in 3.6VDC lithium battery; External 24VDC;
7. Explosion proof mark: Exa Ⅱ BT4.
3、 Product features:
Convenient human-machine interface implementation with screen display, data transmission in standard 485 format;
Low pressure loss and impeller with anti-corrosion function;
The instrument coefficient can be set online through buttons and displayed on an LCD screen, which is intuitive, clear, and highly reliable;
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. The accuracy of the correction formula is better than ± 0.002%;
Using 1Cr18Ni9Ti all stainless steel structure, (turbine uses 2Cr13) with good anti-corrosion performance;
On site display LCD screen has clear and intuitive display, low power consumption, and can run continuously for more than 5 years with 3V lithium battery power supply;
Has strong resistance to magnetic interference and vibration, reliable performance, and long lifespan.
4、 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.
陈超 18015125918
