Tipping bucket rain gauge 3S-RG-MB

200 cm²with RS-485 interfaceModbus RTU

Short description
SEVEN 3S-RG-MB is a tipping-bucket rain gauge that measures rainfall over a 200 cm² collection area using a tipping-bucket mechanism and a reed relay. Measurement pulses are transmitted via RS485 using the Modbus RTU protocol. The sensor features seawater-resistant anodized aluminum components and Plexiglass parts and is supplied with a 3 m UV- and weather-resistant LIYY cable.

Technical specifications

• Item Code: 3S-RG-MB
• Sensor Type: Tipping Bucket Rain Gauge
• Collection Area: 200 cm²
• Measuring Range: 600 mm/h
• Resolution: 0.2 mm
• Accuracy: ±1% (0–30 mm/h); ±2% (30–100 mm/h); ±5% (100–600 mm/h)
• Data Output: RS485 up to 38400 Baud
• Communication Protocol: Modbus RTU
• Power Supply: 12–30 V DC
• Power Consumption: 35 mA @ 24 V DC
• Electrical Connection: 3 m LIYY cable, UV and weather resistant
• Operating Temperature Range: 0°C to +85°C
• Dimensions: Ø 160 x 257 mm
• Connection Box Dimensions: 70.2 x 82 x 55 (W x L x H)
• Weight: 1.4 kg
• IP Rating: IP65
• Housing Material: Plexiglass
• Connection Box Material: ABS

How does a Rain Sensor Work?
The sensor counts tipping-bucket events (resolution 0.2 mm) detected by a reed relay; each tip generates a pulse sent via RS485 (Modbus RTU) so dataloggers and monitoring systems can compute cumulative rainfall and intensity over the 200 cm² collection area.

Where do Rain Sensors work?

• Meteorology
• Hydrology
• Agriculture
• Photovoltaic (PV) field monitoring
• Industrial precipitation intensity measurements

Why choose SEVEN Rain Sensors?

• Cost-effective solution for industrial and environmental monitoring, including PV plants.
• Seawater-resistant anodized aluminum components and IP65 protection for reliable outdoor operation.
• Easy ground installation using the supplied three-leg base; requires a level surface and no additional mounting accessories.

FAQ

• How to install the sensor? Follow the user manual for step-by-step installation and wiring instructions.
• Is a cable included? Yes, a 3 m LIYY cable with UV and weather resistance is supplied.
• How is the 3S-RG-MB mounted? Ground mounting with the supplied tripod base; a level surface is required.
• What is the warranty? 2-year warranty against manufacturing defects.
• Lead times? Small orders (up to 5 pcs): approx. 3–4 weeks. Volume orders (5–100 pcs): approx. 7–9 weeks.
• Price range? Indicative price range for Modbus RTU output model: 235–420 EUR.