Soil and water loss monitor

1. Product overview of soil and water loss monitor

The soil and water loss monitor, also known as the portable soil and water loss monitor, is an automatic soil and water loss monitoring system that can be used for soil and water loss observation under various site conditions in the field, and can also be used for fixed observation of standard runoff fields. In our water conservation experimental work, whether we are measuring runoff fields or soil erosion data in small watersheds, a lot of manual work will occur. The measurement has caused a lot of work inconvenience. Our company's FT-LS1 automatic soil erosion monitor After the product was successfully developed, it replaced a large amount of manual work. After years of experiments and use results, the flow rate error is within 3%. The error of sediment content is within 5%. The performance and appearance of the product have made great progress after a long period of updating.

The automatic monitoring system for soil and water loss is mainly composed of a data collection and storage main computer, a sand content measurement sensor, a surface flow sensor component, and a rainfall sensor. Rainfall sensors measure rainfall intensity and its changes over time, as well as total rainfall and rainfall duration. The surface flow sensor component automatically measures the surface flow, calculates the surface runoff flow that changes with time through the central control computer software and parameter settings, and obtains the real-time change process of the runoff flow. In the system design, the sediment content measurement sensor measures the runoff sediment content in real time at the vertically distributed sediment measurement port of the runoff based on the rainfall/runoff change characteristics.

Through the work management/data storage software and the main control computer, the process data of sediment content, runoff, and rainfall measured by each sensor are managed and stored, and the measurement data are remotely transmitted to the management and monitoring center.

2. Product features of soil and water loss monitor

1. All-weather unattended, automatic measurement and storage: runoff volume, runoff sand content, and sand transport volume

2. Power supply: real-time data is automatically collected and stored and can work for 7 days without power.

3. The soil and water loss automatic monitoring station work management data collection and storage master computer can store a large amount of data locally, and can download data through the RS232 interface on site; or transmit data to the management center wirelessly when there is a remote request.

4. Solar power supply. When there is no rainfall or runoff, the normal state is a power-saving sleep state.

5. It has the function of online real-time monitoring, display of dynamic processes and curves of each measurement parameter, and historical data downloading on computer software

6. The sampling frequency and clock adjustment can be freely set on the data management master computer on site

7. The central control computer software can draw runoff, sediment content, rainfall, number of events, runoff, infiltration, soil erosion, etc. based on the collected data.

3. Working instructions of soil and water loss monitor sensor

1. Work flow of sediment content sensor

Surface water enters the pipeline from A1, flows out through A2 and pushes the flow sensor. Part of the water is discharged from A3. Processor C calculates the real-time flow rate based on the flow rate obtained by the flow sensor. B1 collects the surface water and sends it to the weighing sensor, sensor D The collected data is sent to processor C and processed to obtain the sediment content. After obtaining the data, sensor D discharges the internal sample from B2 to prepare for the next sampling. Processor C outputs external devices through 485 or serial port.

Icon description:

1. Surface runoff pipe

2. Sampling tube

3. Flow sensor

4. Sampling pipe solenoid valve

5. Sample tank

6. Liquid level keeper

7. Liquid level sensor

8. Sample tank holder

9. Drainage solenoid valve

10. Drainage pipe

3D structure diagram of sediment content collecting instrument Schematic diagram of sediment content working

2. Sediment content sensor function

(1) Real-time continuous measurement, data transmission and data analysis and processing of multi-path flow sediment content and flow can be achieved at the same time;

(2) Unattended around the clock, automatically measuring and storing data;

(3) The main computer for work management data collection and storage can store a large amount of data locally, and can download data on-site through the R232 interface;

(4) It has the function of online real-time monitoring on the host computer, displaying the dynamic process and curves of each measurement parameter, and downloading historical data;

(5) The sampling frequency and clock adjustment can be freely set on the data management master computer on site;

(6) Good stability. The sensor is independently developed with high precision, strong stability and strong resistance to environmental interference.

4. Technical indicators of soil and water loss monitor