Product overview
The flow profile of the flow sensor is similar to the profile of venturi. A group of spiral guide vanes are placed on the inlet side. When the fluid enters the flow sensor, the guide vanes force the fluid to produce violent vortex flow. When the fluid enters the diffusion section, the vortex flow starts to rotate twice under the action of backflow, forming a gyroscopic vortex precession phenomenon. The precession frequency is directly proportional to the flow rate, and is not affected by the physical properties and density of the fluid. The signal is amplified, filtered and shaped by the preamplifier and converted into a pulse signal proportional to the flow rate. Then it is sent to the microprocessor together with the temperature and pressure detection signals for integration processing. Finally, the measurement results (instantaneous flow, cumulative flow, temperature and pressure data) are displayed on the LCD.
 
Product features
No mechanical movable parts, not easy to corrosion, stable and reliable, long life, long-term operation without special maintenance;
It adopts 16 bit computer chip, high integration, small size, good performance and strong function;
The intelligent flowmeter integrates flow probe, microprocessor, pressure and temperature sensor, and adopts built-in combinationIt can directly measure the flow rate, pressure and temperature of fluid, and automatically track the compensation and compression factor correction in real time;
The double detection technology can effectively improve the detection signal strength and suppress the interference caused by pipeline vibration;
The domestic leading intelligent anti-seismic technology is adopted to effectively suppress the interference signal caused by vibration and pressure fluctuation;
It adopts Chinese character dot matrix display screen, with many display digits and convenient reading. It can directly display the volume flow under working state, volume flow under standard state, total amount, medium pressure, temperature and other parameters;
Using EEPROM technology, parameter setting is convenient, can be permanently saved, and can save up to one year of historical data;
The display instrument can output frequency pulse, 4 ~ 20mA analog signal, and has RS485 interface, which can be directly connected with microcomputer, and the transmission distance can reach 1.2km;
The alarm output of multiple physical parameters can be selected by the user;
The meter head can rotate 360 degrees, so it is easy to install and use;
With the FM data collector of our company, remote data transmission can be carried out through Internet or telephone network;
The pressure and temperature signals are input by sensors with strong interchangeability;
The whole machine has low power consumption and can be powered by internal battery or external power supply.
 
technical parameter
Executive standard
GB3836.1-2000GB3836.2-2000
Verification regulation
Velocity flowmeter (jjg198-1994)
Nominal diameter
15、20、25、32、40、50、65、80、100、125、150、200、250、300mm
Accuracy class
Grade 1.5 / 1.0
Withstand voltage level
Aluminum body (1.6Mpa) & le; DN150(6.3MPa)； Stainless steel (4.0Mpa) > DN 150 (4.0Mpa);
Working power supply
24 V + battery
Overall power consumption
External power: & lt; 2W; & nbsp; Internal power supply: the average power consumption is 1MW, which can be used continuously for more than two years.
Data storage function
Diary, monthly record, fixed time interval record, etc
Conditions of use
Medium temperature
-20℃～+80℃
relative humidity
5%～95%
ambient temperature
-30℃～+65℃
atmospheric pressure
86KPa～106KPa
Instrument material
Body
Aluminum alloy, stainless steel
converter
Cast aluminum, 304 stainless steel
Protection level
IP65
Explosion proof grade
ExdIIBT4
ExiaIICT4
 
measuring range
Nominal diameter DN (mm)
Flow range < br / >
(m3/h)
Working pressure (MPA)
Accuracy level
Repeatability
fifteen
0.3～9
1.6;< br />
2.5;< br />
4.0;< br />
six point three
Grade 1.0 < br / >
Grade 1.5
Less than 1 / 3 of the absolute value of the basic error limit
twenty
1.2～15
twenty-five
2.5～30
thirty-two
4.5～60
forty
7~100
fifty
10~150
sixty-five
20~280
eighty
28~400
one hundred
50~800
one hundred and twenty-five
100~1500
one hundred and fifty
150~2250
two hundred
360~3600
1.6;< br />
2.5;< br />
four
two hundred and fifty
400-4000
three hundred
500-5000
 
On site cases




Installation and use in shipyard
Application in power industry
Application in chemical industry
Application of natural gas measurement