Industrial Leaf Wetness and Temperature Sensor
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The Leaf Wetness and Temperature Sensor tracks moisture and heat on plant surfaces to help farmers prevent disease and control irrigation timing.
Leaf wetness is an important indicator of the infection of pathogens on the leaves. The amount of moisture on the leaf surface makes it easy to be infected by fungal and bacterial diseases. It is used for monitoring leaf moisture for agricultural purposes, such as fungus and disease control, for control of irrigation systems, for detection of fog and dew conditions, and for early detection of rainfall.
The Seeed Industrial Leaf Wetness & Temperature Sensor measures moisture presence, duration, and temperature on leaf surfaces. It provides reliable data on wetness from sources such as dew, rain, irrigation, or pesticides, alongside leaf temperature. With this data available, farmers can make better decisions for irrigation, pest control, and other measures to make the plants and crops grow better.
This Seeed industrial Leaf Wetness and Temperature Sensor comes in the shape of a leaf, and it simulates the wetness and temperature of a real leaf. To make the sensor more robust, it is sealed with a resin-packaged plastic body, which makes it waterproof and suitable for long-time monitoring, even in outdoor harsh environments.
The sensor itself tries to mimic the thermal resistance of a real leaf so that the water on the sensor condenses and evaporates at the same rate as on a real leaf. The sensor determines the wetness by measuring the change in the relative permittivity. The measurement value is proportional to the percentage of the sensing area covered with water. The output signal can be RS485, Analogue Voltage, or Analogue Current, and can be fed into a data logger.
It can be used with the SenseCAP LoRaWAN® Data Logger to easily connect with the local LoRaWAN® network, enjoying the benefits of low-power and long-range communication.
Features
- 2-in-1 Sensor: Measure 2 factors: leaf wetness and temperature in one single sensor
- Supports universal MODBUS RS485 protocol: Supports MODBUS-RTU RS485 output Interface
- Simulation Sensing: Simulates the real leaf thermal resistance by sensing shape and thickness
- Industrial-grade design: The enclosure is IP68 rated, waterproof and dustproof, suitable for harsh environments, provides high accuracy with excellent stability
- Comprehensive Protection: Provides reverse power protection and Built-in TVS/ESD protection
Specifications
| Output Interface | RS485 Modbus-RTU |
| Power Supply | 3.6–30 V/DC |
| Power Consumption | 6 mA @ 24 V DC |
| Leaf Wetness Measurement | Range: 0–100%, Resolution: 0.1%, Accuracy: 5% |
| Temperature Compensation | Range: −40–80 °C, Resolution: 0.1 °C, Accuracy: ±0.5 °C |
| Measurement Technique | FDR |
| IP Rating | IP68 |
| Operating Temperature | −40–85 °C |
| Sensor Sealed | Epoxy resin |
| Installation | Mounting kit |
| Cable Length | 2 metres |
| Dimensions |
65 × 13 × 145 mm |
Dimensions
Wiring Diagram
Resources
Package Contents
- 1x Industrial Leaf Wetness and Temperature Sensor
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