Type | WS-601 SS | WS-601 SH |
Material | Stainless steel | |
Measuring range | 0~240mm/hr, workable 480mm/hr | |
Accuracy | ±≤2%(≤240mm/hr); ±≤3% (≤300mm/hr); | ±≤ 2%(≤240mm/hr); ±≤3% (≤300mm/hr); |
Resolution | 0.2mm | 0.5mm |
Inner diameter | 200mm/8inch ±0.3% | |
Acute angle of cutting edge | 40~45° | |
Insect protection | Steel stainless Mesh with Edge | |
Output | Standard Pulse(Reed switch, 5pulse/mm); RS485 optional | Standard Pulse (Reed switch, 2 pulse/mm); RS485 optional |
Power supply | Pulse : MaxDC24V,100mA ; RS485: DC5V or DC 7-24V | |
Level control | Bulls eye level adhered | |
Base | Diecast stainless Steel | |
Mounting holes | Three mountings | |
Discharge control | Straight through flow mechanism | |
Working temperature | -20～80℃ | |
Working humidity | 0%~95%RH | |
Height | 402.2mm | |
Weight | 3.8Kg | |
Packing Size | 31*31*47cm | |
Key Features Comparison
| Feature | Siphon Rain Gauge | Tipping Bucket Rain Gauge |
|---|---|---|
| Measurement Method | Float + siphon mechanism | Mechanical tipping + electronic counting |
| Data Output | Analog (paper chart) | Digital (pulse signals or wireless transmission) |
| Resolution | 0.1 mm | 0.1 mm or 0.2 mm |
| Rain Intensity Range | 0.01–4 mm/min | ≤4 mm/min (may lose accuracy in heavy rain) |
| Maintenance | Requires frequent chart replacement and siphon checks | Needs periodic cleaning and calibration |
| Solid Precipitation | Not suitable for snow/ice | Requires melting for snow measurement |
| Automation | Limited (manual data retrieval) | High (real-time remote monitoring) |
Working Principles
Siphon Rain Gauge:
Rainwater enters through a collector funnel and flows into a float chamber.
A float rises with the water level, moving a pen that records rainfall on a rotating drum with a time-based chart.
When the water reaches a set level (e.g., 10 mm), a siphon tube drains the chamber automatically, resetting the float and pen.
Tipping Bucket Rain Gauge:
Rainwater fills one side of a small, balanced bucket.
Once a preset volume (e.g., 0.1 mm or 0.2 mm) is reached, the bucket tips, triggering an electronic pulse.
The count of tips is converted into rainfall depth, with data transmitted digitally.
Siphon Rain Gauge: Ideal for historical rainfall analysis in meteorological stations
Tipping Bucket Rain Gauge: Preferred for flood warning systems, floods are generally short periods of heavy rainfall, and 0.5 resolution tipping bucket rain gauges are recommended.
agriculture, and IoT-based weather networks.
