Smart Rain Gauge Sensor, Tipping Bucket

Dimensions (unit: mm)

Installation

Smart Rain Sensor Pulse Type User Manual

Q1: How does the smart rain sensor of tipping bucket type measure rainfall accurately?
A1: This smart rain sensor uses a precision tipping bucket mechanism that collects water through a Φ200 mm rain-bearing mouth. Each time the bucket fills to the preset capacity, it tips and generates a pulse signal. The rainfall sensor counts these tips to calculate total precipitation with resolution options of 0.2mm or 0.5mm, ensuring accuracy within ≤ ±2.5% at 4mm/min rainfall intensity.

Q2: What output signals does this rainfall sensor support for data transmission?
A2: This smart rain sensor supports multiple output formats to meet various system requirements. The rainfall sensor offers pulse output for direct counter connection, RS485 with MODBUS-RTU protocol for networking, and analog signals including 4-20mA, 0-5V, and 0-10V. A 4G version is also available for wireless data upload to cloud platforms.

Q3: How do I maintain the smart rain sensor for long-term reliable operation?
A3: Regular maintenance of this rainfall sensor is simple. The smart rain sensor features a self-cleaning curved guide tip that prevents debris accumulation. Users should periodically check the level bubble to ensure proper horizontal positioning, rinse the tipping bucket with clean water to remove dust or oil deposits, and clear any foreign objects from the rain-bearing mouth to keep the waterway unobstructed.

Tips: How to configure the output signal for the smart rail sensor in different data acquisition systems?

• Select pulse output for simple counter-based loggers. Pulse signals work directly with PLC counters and basic data loggers without requiring additional protocol configuration – ideal for standalone installations where only total rainfall count is needed.
• Choose RS485 with Modbus-RTU for networked monitoring. This digital interface enables communication with host computers, IoT gateways, and SCADA platforms, allowing real-time data retrieval and remote configuration from multiple devices.
• Use analog outputs (4-20mA, 0-24V, or 0-10V) for industrial controller integration. These continuous signals suit systems requiring real-time intensity readings rather than cumulative tip counts, such as process control or automated irrigation controllers.
• Verify power and communication cabling distances. RS485 supports longer transmission distances (up to 1200 meters) with better noise immunity, while pulse and analog signals are more susceptible to voltage drop and interference over extended cable runs.

Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

What is covered?

SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

What is not covered?

• Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
• Expendable parts.
• Routine cleaning or normal cosmetic and mechanical wear.
• Damage from misuse, abuse or neglect.
• Damage from use of parts other than SISCO approved.
• Damage from use outside the product’s usage or storage parameters.
• Damage from use of parts not sold by SISCO.
• Damage from modification or incorporation into other products.
• Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
• Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.