WPG200 Weighing Rain Gauge
- Manufacturer: Nesa
- Category: Rain - Snow, Meteorology – Climatology, SENSORS
The NESA WPG200 is a weighing rain gauge that measures all types of liquid and solid precipitation in mm of H2O. It features a cylindrical body made of anodized anticorodal aluminum, painted white. Precipitation (liquid, solid, and mixed) is directed to a collection tank located above a sealed load cell. A digital interface calculates the weight variation, compensates for the influence of temperature, and applies the conversion to the digital output.
Hole surface 200/400cm², capacity 1500mm, accumulation accuracy 0.1% fs, 3 load cells with response time < 20s, outputs A 0÷2Vdc, B 4÷20mA and C RS485 / Modbus RTU, power supply 10÷28Vdc, IP65.
Key points
- Weighed with 3 load cells; response time < 20s
- Hole surface area 200/400cm²; capacity 1500mm
- Accumulation accuracy 0.1% fs; intensity accuracy ±1% at < 300mm/h ±2% at ≥ 300mm/h
- Accumulation resolution < 0.1mm; intensity resolution 0.1mm/h
- Outputs: A 0÷2Vdc, B 4÷20mA (accumulated 0-100mm with auto-reset) and C RS485 / Modbus RTU (all data)
- Power supply 10÷28Vdc, 3mA @ 12Vdc; 0 ÷ 80°C (-40 ÷ 80°C heated versions); IP65; approx. 4.5kg without stand
Technical Frequently Asked Questions
What does the WPG200 measure?
Liquid, solid, and mixed precipitation in mm of H2O, measured by weighing with 3 load cells. Orifice surface area 200/400cm² and capacity 1500mm.
What is its accuracy and resolution?
Accumulation accuracy 0.1% fs and intensity accuracy ±1% at < 300mm/h and ±2% at ≥ 300mm/h. Accumulation resolution < 0.1mm and intensity resolution 0.1mm/h.
What exits does it have?
A 0÷2Vdc, B 4÷20mA and C RS485 / Modbus RTU. In A and B the measurement is an accumulated 0-100mm with auto-reset; the analog output has a resistance of 50Ω and the maximum load of the 4÷20mA loop is 300Ω.
What food and what temperature does it support?
Power supply 10÷28Vdc, consumption 3mA @ 12Vdc (excluding 4÷20mA loop). Operating temperature 0 ÷ 80°C; -40 ÷ 80°C in heated versions.
How do I order it?
Sensor (WPG200), output (A, B, or C), cable (CS05, CS10, or CSxx), and bracket (SPL3). Manufacturer's example: WPG200 C 10 SPL3.
Properties
| Feature | Specification |
|---|---|
| Measurement and operating principle | |
| Measured magnitude | Liquid, solid, and mixed precipitation |
| Measurement principle | Heavy |
| Hole surface | 200/400cm² |
| Ability | 1500mm |
| Transducer | 3 load cells |
| Response time | < 20s |
| Accumulation accuracy | 0.1% fs. |
| Intensity accuracy at < 300mm/h | ±1% |
| Intensity accuracy at ≥ 300mm/h | ±2% |
| Accumulation resolution | < 0.1mm |
| Intensity resolution | 0.1mm/h |
| Intensity measure | Real-time, mm/h |
| Exit signals | |
| Exit A | 0÷2Vdc |
| Exit B | 4÷20mA |
| Exit C | RS485 / Modbus RTU (all data) |
| Field of exits A and B | Accumulated 0-100mm with auto-reset |
| Analog output resistance | 50Ω |
| Maximum load on the loop 4÷20mA | 300Ω |
| Power supply, environment, and mechanical data | |
| Feeding | 10÷28Vdc |
| Consumption | 3mA @ 12Vdc (4÷20mA loop excluded) |
| Protections | Polarity reversal and transients |
| Operating temperature | 0 ÷ 80°C |
| Operating temperature, heated versions | -40 to 80°C |
| Material | White painted anticorodal aluminum alloy |
| Degree of protection | IP65 |
| Weight | Approx. 4.5kg without stand |
| Regulatory compliance | WMO standard and CE standards |
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