SKID electromagnetic flowmeters transmit data from the flowmeter's instantaneous flow rate, instantaneous flow rate, cumulative flow rate, conductance ratio, and GPRS signal strength to the server via a built-in GPRS wireless transmitter module. The user can monitor the flowmeter's related data information by logging into the server's website, and query the management information such as data, flow curve, daily accumulation, and monthly accumulation.
The remote data acquisition system also has a map display function that can display the position of the flow meter in real use. And equipped with user and page multi-level permission group management functions, truly realize the purpose of unlimited remote transmission and data integrated management.
Features
1. The geographical map shows that the operation interface.
2. Perform analysis of the entire thermal network system, with powerful statistics and query functions, and master the pipe network loss situation in real time.
3. Collect temperature, pressure, flow rate and operating parameters of each user sub-station in real time, and monitor the operation of each meter in real time.
4. Query any user's wife within any period of time.
5. AC power outage to substations, temperature, pressure, flow and other parameters
Abnormal conditions produce fault records and summarize faults.
And sent to the hotline management personnel through SMS.
6. Automatically generate settlement bills, daily statements, monthly as needed
Tables, annual, etc., can be printed out on media.
7. The user substation and the dispatcher can talk to each other.
8. Uninterruptible power supply design ensures that the test point is always online.
9. Meter information can be obtained anytime, anywhere.
10. Technical library management, configuration design.
11. Network design, support for remote access.
12. Support screen or projector display.
GPRS function: electromagnetic flow converter installed SIM card through GPRS signal transmission through mobile phone and PC landing unified webpage
Data platform, input the electromagnetic flowmeter corresponding to each SIM card mobile phone number, and check the flow data at any time.
1. Log in to the data network through the mobile web page to view the data.
2. Wireless away from the workstation, viewing data through the workstation.
According to Faraday's law of electromagnetic induction, in a uniform magnetic field of magnetic induction B, a non-magnetic conduit with an inner diameter D is placed perpendicular to the direction of the magnetic field. When the conductive liquid flows in the pipeline at a flow rate v, the conductive fluid cuts the magnetic flux. Fitting a pair of electrodes perpendicular to the diameter of the magnetic field at the cross-section of the pipe can prove that an induced electromotive force is generated between the two electrodes as long as the velocity distribution in the pipe is axisymmetric.
e=KBDv (3-36)
In the formula, v is the average flow velocity in the section of the pipe, and k is the instrument constant. This results in the volume flow of the pipe being:
Qv= πeD/4KB (3-37)
From the above equation, the volume flow qv is linearly related to the induced electromotive force e and the inner diameter D of the measuring tube, and is inversely proportional to the magnetic induction strength B of the magnetic field, and has nothing to do with other physical parameters. This is the measurement principle of the electromagnetic flowmeter.
It should be noted that to make equation (3-37) strictly true, the electromagnetic flowmeter measurement conditions must satisfy the following assumptions:
1 magnetic field is a uniform distribution of a constant magnetic field;
2 The flow velocity of the measured fluid is axisymmetric;
3 The measured liquid is non-magnetic;
4 The conductivity of the liquid to be measured is uniform and isotropic.
Flow measurement range: 0.1 to 15 m/s, flow rate resolution: 0.5 mm/s
Measuring pipe diameter: 3 ~ 3000 (mm)
Matching accuracy level: 0.5
Excitation frequency: 3.12HZ, 4.16HZ, 6.25HZ, 12.5HZ, 25HZ, 30HZ
Excitation current: 125mA excitation coil resistance 100 ~ 120Ω (must be when high frequency excitation)
187mA excitation coil resistance 60~80Ω
250mA excitation coil resistance 50~60Ω
ATC measurement: No additional electrode for empty tube measurement
Detection alarm parameters: excitation current detection alarm
Current output: Load resistance at 4 to 20mA output 0 to 750Ω
Basic error: 0.1% ± 10μA
Frequency output range: 0~5000Hz
Pulse output equivalent: 0.001~59.999 ukg
0.001 to 59.999 ukg
Pulse output width: 1~500ms adjustable
Frequency pulse output: OC gate output form; photoelectric isolation, isolation voltage ≥ DC1000V;
FET output: The highest withstand voltage DC36V, the maximum load current 100mA.
Alarm display: ATC alarm, excitation alarm, instantaneous flow upper and lower limit alarms, small signal removal alarm, flow inhibition alarm
Alarm output: ATC alarm, instantaneous flow upper and lower limit alarms, small signal removal alarm, flow inhibit alarm
OC gate output form: photoelectric isolation, isolation voltage: ≥ DC 1000V;
FET output: The highest withstand voltage DC36V, the maximum load current 100mA.
Power supply: AC 85V~250V, 46~63Hz, power<20W
DC 20V~36V, power <20W
Shell protection class: IP65
Explosion-proof grade: Exd IIC T6 Gb
Installation form: Round housing integrated, the housing is directly connected to the sensor flange
Communication Interface: GPRS Communication
Language Settings: Simplified Chinese, Traditional Chinese, Spanish, Portuguese, Italian, Russian, French (customizable)
Display mode: 128×128 large-screen LCD three-line display, rotatable liquid crystal display direction (L28)
Key ordinary LCD (L32)
Ordinary LCD button with data reading function (L32D)
Large LCD (L64)
Operation method: Optical touch keys, ordinary keys, remote control (optional)
Flow totalization function: There are two totalizers inside, which can be recorded separately: forward total, total
Ambient temperature: –10 to +55°C
Relative humidity: 5% to 90%
Linear correction: Using fold line correction method, commonly used in the world, easy to set up