Rain gauge is also known as digital rain gauge, automatic rain gauge, rainfall monitor, its compact and beautiful easy to carry, touch buttons, large dot-matrix LCD display, easy to operate, full Chinese menu operation, simple and convenient operation.Real-time display function, the instrument is connected to the computer, you can display the parameter curve on the computer in real time, the probe has the consistency, can be synchronized with multi-point detection.
Synopsis
This instrument is in line with the People's Republic of China water conservancy and hydropower industry standard SL21-1990 "precipitation observation specifications" "long-term self-recording rain gauge" and the China Meteorological Administration in the 2003 edition of the "norms of ground meteorological observation" in the "automatic rainfall station" of the relevant requirements.Requirements.
This instrument's rain sensitivity, measurement accuracy, rain intensity applicable range are better than other forms of rain gauge, suitable for equipping China's southern heavy rainfall areas, northern sand and dust environmental conditions of various types of rainfall measurement station.
Functional Features
1, compact and beautiful easy to carry, touch buttons, large screen dot-matrix liquid crystal display, easy to operate, full Chinese menu operation, simple and convenient operation.
2、One-key switching, you can manually record can also be detached from the computer at any time to set the sampling interval, automatic recording of data.
3、Real-time display function, connect the instrument with the computer, you can display the parameter curve on the computer in real time.
4、With manual, automatic and computer lock three modes to choose from, the three modes can be set by the user according to need.Manual mode: the working mode is to press once to save once, not only can record the time and various environmental parameters at the time of pressing down.And can set the interval time for automatic recording, press the stop button can be stopped at any time.After the data acquisition, the data can be sent to the computer, the software will automatically generate the curve graph, can be printed and data processing.(The host key is valid at any time, and can be collected at breakpoints.) Automatic mode: set the interval time first, and the instrument can record data automatically according to the set interval time.After the data collection, the data can be sent to the computer, and the software will automatically generate the curve graph, which can be printed and processed data.Computer lock mode: all the keys on the host are disabled (lock key), according to the computer set the interval time automatically sampling to ensure the authenticity and continuity of the data.
5, AC and DC dual-use, you can get the field at any time to measure the collection of data, can also be placed for a long time to record the location.
6, data preservation function is powerful, the maximum storage of 60,000 data (two parameters that is 30,000 groups, three parameters that is 20,000 groups, four parameters that is 15,000 groups, and so on), you can view the data on the host, can also be imported into the computer.
7, after the power failure has been saved in the host data is not lost.
8, the computer software has a powerful data processing capabilities, the collected data can be formed into a graph, visual display.The collected data can also be stored as EXCEL spreadsheet file, which is convenient for users to save and process the data, or use specialized software for data processing, drawing bar graphs, pie charts, printing and so on.Software permanent free upgrade.
9, the probe has consistency, different parameters of the probe socket interchangeable, does not affect the accuracy.
10, the instrument has a 32-channel simultaneous detection function, can realize multi-point synchronous detection (a host can be installed at the same time 32 measurement indicators, multi-channel interfaces and sensors need to be equipped separately)
Instrument Features
High rain sensitivity (0.07mm).
High accuracy.
The instrument is easy to install, adjust and calibrate,
High degree of intelligence, easy to maintain.
Pulse (every 0.1mm rainfall) output and RS-485 real-time cumulative rainfall output, which can be directly connected with data collector, RTU, computer or other upper devices to realize high-precision automatic data collection and transmission.
(2) When the precipitation reaches 0.07㎜, the tipping bucket is tipped once, and the collector is automatically awakened to collect the sensor data and time information; (3) When the liquid column in the float chamber reaches the upper limit, the collector controls the "mandatory siphon device (electromagnet)" to press the float, so that the siphon drainage occurs immediately, and the drainage period is blocked at the same time.
(4) After the end of the drainage period, the collector automatically measures and records the height of the "0" water level, and then enters into the next process of measurement;
(5) In addition to the automatic recording of the drainage process, the collector can also automatically calculate the drainage time, measure the no-load power supply voltage and the power supply voltage when the solenoid is pressurized, monitor the float chamber for water leakage, and transmit the above status information to the host computer.
Scope of use
The technical performance of this instrument is much higher than the existing rainfall sensors in the international and domestic markets, and it is suitable for equipping the national basic rainfall stations, encrypted automatic meteorological (rainfall) stations and telemetry stations in various places and under different climatic environments, completing the automatic measurement of precipitation and data acquisition, especially for replacing the traditional paper-recorded siphon rain gauge, which can make the existing siphon rainfall stations realize the unmanned and automatic data compilation and automatic transmission.It can make the existing siphon rainfall station realize unattended and automatic data compilation and transmission.
Main technical parameters
4.1 Diameter of rain-bearing mouth: Φ200+0.60mm, sharp angle of edge 40-45°;
4.2 Resolution: 0.1mm;
4.3 Measuring range of rainfall intensity: 0.01-8mm/min (mm/min)
4.4 Measuring accuracy (in the range of rainfall intensity of 0.01-8mm/min): Precipitation <10mm, measuring error: ±0.2mm; Precipitation ≥10mm, measuring error: ±(0.2mm+1% F.S)10mm;
4.5 Output signals:
(1) RS-485 interface, the output of real-time cumulative rainfall, rain encoder true value, the relevant alarm signals (see Appendix I, JFZ-01 digital rainfall sensor RS-485 interface communication protocol);
(2) Pulse interface, every 0.1mm rainfall relay output contact is connected once, the connection time is 100ms, the minimum interval is 400ms, the contact capacity is ≤ 24VDC/0.2A;
4.6 Rainfall storage and recording capacity (optional function): more than 3000mm or more than 1.5 years.
4.7 Power supply voltage: 12VDC±15%
4.8 Working ambient temperature: 0～+50℃;
4.9 Working ambient humidity: ≤95%RH (40℃);
4.10 Volume (diameter×height): Φ220×560mm;
4.11 Weight: 4Kg.
