Ultrasonic flowmeter features
The unique signal digitization processing technology makes the meter measurement signal more stable, anti-interference ability and more accurate measurement.
No mechanical transmission parts are not easily damaged, maintenance-free and have a long service life.
The circuit is more optimized, with high integration, low power consumption and high reliability.
Intelligent standard signal output, friendly man-machine interface, multiple secondary signal output, for you to choose.
Pipe-section small pipe diameter measurement is economical and convenient, and the measurement accuracy is high.
Detailed installation of ultrasonic flowmeter
Ultrasonic flowmeters should be aware of the site prior to installation, including:
1. What is the distance from the host at the installation of the sensor;
2. Pipe material, pipe wall thickness and pipe diameter;
3. Years of pipeline;
4. The type of fluid, whether it contains impurities, bubbles and whether it is full;
5. Fluid temperature;
6. Whether there is interference source at the installation site (such as frequency conversion, strong magnetic field, etc.);
7. Four seasons temperature at the host place;
8. Whether the power supply voltage used is stable;
9. Do you need remote signals and types;
According to the site conditions provided above, the manufacturer can configure the site conditions and, if necessary, special models.
The main technical parameters of ultrasonic external clamp flowmeter:
Measurement accuracy: better than 1%
Repeatability: better than 0.2%
Measurement period: 500ms (2 times per second, 128 sets of data collected per cycle)
Working power: 220VAC/8~36VDC
Maximum flow rate: 64m / s (flow rate resolution 0.001m / s)
Display: 2 × 10 Chinese characters backlit LCD can display instantaneous flow and positive, negative, net cumulative flow, flow rate, etc.
Operation: 4×4 touch keyboard (F4 main unit magnetic 4 button) operation
Signal input: 3 channels of 4-20mA analog input, accuracy 0.1%, can input pressure, liquid level, temperature and other signals
2-way three-wire PT100 platinum resistor
Signal output: 1 isolated RS485 output
1 way 4-20mA or 0-20mA output
1 channel isolated OCT (programmable between pulse width 6~1000ms, default 200ms)
1 relay output (pulse width 200ms)
Data storage: Optional built-in data storage (SD card) can store time, instantaneous flow, accumulated flow, signal status, etc., through special software, can import data into computer for statistical and management
Communication protocol: MODBUS protocol, M-BUS protocol, FUJI extension protocol, and compatible with communication protocols of similar products of other domestic manufacturers
Other functions: automatic memory before 512 days, the first 128 months, the first 10 years of positive / negative / net cumulative flow
Automatically remember the first 30 times of power-on and power-off time and flow rate, and can realize automatic or manual addition of traffic, which can be read by MODBUS protocol.
Programmable batch (quantitative) controller, fault self-diagnosis function
Software upgrade via code file transmitted via E-mail
Protection level: sensor IP68, F4 host IP68, remaining host IP65
Explosion-proof grade: EXdIIBT4 (JN-100F2 type)
Intelligent GPRS MAG flow meter working principle
Since the GPRS communication is a data packet communication network based on an IP address, after the monitoring center computer logs in to the Internet network, the IP address is assigned by the Internet, and each GPRS monitoring point establishes a connection with the host through the address and communicates. Each monitoring point collects data through the data acquisition module, processes the data through the embedded processor in the GPRS terminal, encapsulates the protocol, sends it to the GPRS network, and transmits it to the user data monitoring center computer.
Battery-powered converter GPRS communication introduction
The battery-powered converter with GPRS function can directly send data to the remote control center through the GPRS wireless module GPRS-DY or GPRS-DF, hereinafter referred to as the GPRS module, and then store the collected data in the database at regular intervals. Through the system, even in an off-site away from the observation site, it is convenient to collect and read data of each monitoring point, and truly realize the functions of remote monitoring and data sharing.