4-20mA Tipping Bucket Rain Gauge

4-20mA tipping bucket rain gauge is a type of rain gauge that utilizes a 4-20 milliampere (mA) current loop for transmitting analog signals representing rainfall measurements. Here's how a 4-20mA tipping bucket rain gauge typically operates:

 1. Tipping Bucket Mechanism: The rain gauge consists of a funnel that collects rainwater and directs it to a tipping bucket mechanism. Each time a specific amount of rainwater (usually 0.2 mm or 0.5mm) is collected, the bucket tips, and a reed switch or other sensor detects the tip.

 2. Signal Conversion: The tipping events are counted and processed by internal circuitry within the rain gauge to calculate the rainfall accumulation over a specific period. This information is then converted into an analog signal.

 3. Current Loop: The rain gauge is connected to a receiving device, such as a data logger or control system, using a two-wire current loop. The rain gauge modulates the current in the loop to represent the measured rainfall.

 4. Wiring: The rain gauge is wired in series with a power supply and the receiving device. The current loop typically requires only two wires, simplifying installation and reducing susceptibility to electrical noise over long distances.

 5. Current Signal: The rain gauge sends the measured rainfall information as a 4-20mA current signal. The magnitude of the current corresponds linearly to the measured rainfall within the specified range. For example, 4mA could represent no rainfall, while 20mA could represent the maximum rainfall measurement.

 6. Receiving Device: The receiving device monitors the current in the loop and converts it back to a voltage signal for processing. This device can then display, log, or further manipulate the rainfall data as needed for monitoring or control purposes.

 7. Measurement Range: The 4-20mA current signal has a standardized range of 4mA to 20mA, allowing for easy integration with various types of industrial instrumentation and control systems.

Uses of 4-20mA tipping bucket rain gauge

 4-20mA tipping bucket rain gauge is a kind of rainfall measuring instrument whose output signal is 4-20mA current, which has the advantages of high accuracy, high stability and low maintenance cost. The following are the main uses of 4-20mA tipping bucket rain gauge:

 Meteorological monitoring: meteorological monitoring stations can use 4-20mA tipping bucket rain gauge to monitor rainfall, rainfall frequency and other meteorological parameters, to provide data support for weather forecasting and climate change research.

 Hydrological monitoring: hydrological monitoring station can use 4-20mA tipping bucket rain gauge to monitor the water level, flow and other parameters of rivers, lakes and other water bodies, in order to carry out hydrological analysis and water resources management.

 Agricultural field: Agricultural field can use 4-20mA tipping bucket rain gauge to monitor the rainfall, rainfall frequency and other parameters of the farmland, in order to rationally arrange the planting of crops and irrigation time, and improve the efficiency of agricultural production.

 Urban drainage system: urban drainage system can use 4-20mA tipping bucket rain gauge to monitor rainfall, rainfall frequency and other parameters, in order to assess the performance of urban drainage system and optimize drainage design.

 Environmental monitoring: environmental protection departments can use the 4-20mA tipping bucket rain gauge to monitor the impact of rainfall on air quality, in order to carry out air quality assessment and pollution control.

 In short, 4-20mA tipping bucket rain gauge has a wide range of application prospects, can provide important data support and technical guarantee for meteorological monitoring, hydrological monitoring, agricultural field, urban drainage system and environmental protection monitoring and other fields. Please note that the specific use, but also need to be based on the actual application scenarios and needs to choose the appropriate 4-20mA tipping bucket rain gauge.

Tipping bucket rain gauge data sheet

NBL-W-ARS-Tipping-bucket-rain-gauge-instruction-manual.pdf

NBL-W-RS-Rain-sensors-instruction-manual-V4.0.pdf