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Runoff and sediment monitoring system

发布时间:2024-05-21


BJJL-2171 system includes: stainless steel water distribution system, tipping bucket rain gauge, electromagnetic flowmeter, turbidity meter, CR300 data collection, solar battery  image.png      

       Principle: It is mainly used in the case of natural rainfall or artificial simulated rainfall, real-time online observation of small runoff residential soil and water conservation monitoring data. In the case of natural or artificial rainfall, the rain gauge starts to record the amount of rainfall and sends a signal to the CR300. The electromagnetic relay switch is then activated to supply power to the turbidity meter and the electromagnetic flowmeter. The system began to record runoff and sediment turbidity, real-time discharge and runoff accumulation. If there is no rain within 1h, the system will stop supplying power to the electromagnetic flowmeter and turbidity meter in order to save power.

Features:

Unattended 24/7

Simple operation

Save power through rain control circuit

Freely set sampling frequency and adjust clock data

· Technical parameter:

  Technical performance and technical indicators

  Runoff and sediment monitor BJJL-2171

  turbidimeter


  voltage

  24VDC

  Turbidity measurement range

  0-50000mg/L

  Cleaning system

  Automatic wiper cleaning system

  Cleaning interval

  Clean it immediately after power is turned on, and then clean it every 10 minutes

  Main material

  SUS316L, Tempered glass, fluororubbers, EPDM, PVC(Cable)

  exportation

 

Analog (4-20mA) signal output: Resistance load up to 300Ω


4mA:0mg/L 20mA:50000mg/L


Self-detection output: open collector (DC24V Max. 20mA)


  Electromagnetic flowmeter


  medium

  rainwater 

  lining

  Teflon lining

  electrode

  316(3)

  stress

  1.6MPA

  range

  0.1-1

  temperature

  Normal temperature

  precision

  Level 0.5

  Power supply

  220V/24VDC

  exportation

  4-20MA

  communication

  RS485+modbus protocol

   Class of protection

  IP68

  Connection mode

  Flange connection

     Numerical sampling


  Data collector

    Scanning rate: 150Hz

  Analog input

  6 single-ended channels.

  Pulse channel

  2个

  Operating temperature

  -25~50℃ (standard)

  Internal memory

  The standard is 10M memory

       Supply voltage

  9~16VDC

    A/D conversion

  13bit

    Digital channel

  SDI-12,RS232

 

Latest case

Location: Zhongzhuang Ecological Observation Field, Pengyang County, Ningxia

Pengyang County is located in the hilly and gully region in the middle of the Loess Plateau and has a typical continental monsoon climate. Winter cold long, summer hot short, the daily temperature difference is large, sufficient light. Drought and little rain, but in summer, the sudden rainstorm is more frequent, fierce and concentrated. The study of runoff is of great significance to vegetation restoration and soil and water conservation in this area. In the traditional research, it is mainly carried out by placing buckets in the runoff test area to collect the runoff on the slope, which can not realize the real-time monitoring of runoff. On this basis, the runoff and sediment system developed by our company can realize real-time monitoring of rainfall, runoff turbidity, instantaneous discharge and cumulative discharge, save a lot of manpower and material resources, and also provide more detailed data for runoff research, and provide data support for ecological restoration and improvement in Pengyang area.