RS-WS-YM-1 Leaf Surface Temperature & Humidity Sensor

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RS-WS-YM-1 Leaf Surface Temperature and Humidity Sensor

Product ID：SHZWymj021

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberRS-WS-YM-1

Brand NameSDRENKE

Payment TermsTT，PAYPAL，Alibaba.com Pay

RS-WS-YM-1 Leaf Surface Temperature and Humidity Sensor
Product Overview
The RS-WS-YM-1 Leaf Surface Temperature and Humidity Sensor is designed to simulate the structure and surface characteristics of a real plant leaf for accurate monitoring of leaf surface moisture and temperature. It detects changes in the dielectric constant of the leaf surface to measure moisture and can identify even small amounts of residual water on the leaf.
The sensor features a highly sensitive simulated leaf structure, dense leaf-vein patterns, waterproof construction, low power consumption, and IP67 protection, making it suitable for long-term outdoor monitoring in agricultural and plant research applications.

Key Features
• Realistic leaf simulation: Simulates the shape and surface characteristics of natural leaves for more representative monitoring.
• High moisture sensitivity: Detects small amounts of water residue and small droplets on the leaf surface.
• Dielectric measurement principle: Determines leaf surface moisture through changes in dielectric constant.
• Optimized leaf-vein structure: Denser simulated leaf-vein patterns improve surface water detection sensitivity.
• Thermal conductive silicone grease design: Simulates the thermal characteristics of a real leaf for temperature monitoring.
• High-precision temperature measurement: Uses a high-precision thermistor and transmitter for reliable temperature monitoring.
• Multiple output options: Supports RS485, 4–20 mA, 0–5 V, and 0–10 V output configurations.
• IP67 protection: Encapsulated with flame-retardant epoxy resin for reliable outdoor operation.
• Low power consumption: Maximum power consumption is only 0.75 W at 12 V DC.
• Long-term continuous monitoring: Designed for continuous monitoring of leaf surface conditions in outdoor environments.

Working Principle
The RS-WS-YM-1 simulates the structure and surface characteristics of a plant leaf. For moisture measurement, the sensor detects changes in the dielectric constant caused by water on the simulated leaf surface. Because water has different dielectric properties from the leaf material, even small amounts of moisture can be detected with high sensitivity.
For temperature measurement, a high-precision thermistor monitors the temperature of the simulated leaf surface. The collected temperature and humidity data are processed by the transmitter and can be communicated through the RS485 Modbus interface or other available analog output configurations.

Technical Specifications

Parameter	Specification
Model	RS-WS-YM-1
Power Supply	DC 5–30 V
Maximum Power Consumption	0.75 W (12 V DC)
Operating Temperature	-40°C to +60°C
Humidity Measurement Range	0–100%RH
Humidity Resolution	0.1%RH
Humidity Accuracy	±3%RH (@0–50%RH, 25°C)
Temperature Measurement Range	-40°C to 80°C
Temperature Resolution	0.1°C
Temperature Accuracy	±0.5°C (@25°C)
Protection Rating	IP67
Encapsulation Material	Black flame-retardant epoxy resin
Standard Cable Length	2 m
Cable Length	Customizable
Dimensions	65 × 15 × 138.5 mm
Output Signal	RS485 (Modbus protocol)
Optional Analog Outputs	4–20 mA, 0–5 V, 0–10 V

Applications
• Leaf wetness monitoring
• Plant leaf temperature monitoring
• Agricultural environmental monitoring
• Smart agriculture
• Greenhouse crop monitoring
• Crop disease research
• Plant physiology research
• Agricultural meteorological observation
• Irrigation management
• Plant growth experiments
• Outdoor agricultural monitoring systems

Application Scenarios
The RS-WS-YM-1 is particularly suitable for applications where leaf surface wetness and temperature need to be monitored continuously.
In agricultural research and smart farming, leaf surface moisture data can be used to study plant growth conditions, irrigation effects, and environmental changes. Leaf wetness information can also support crop disease research and agricultural environmental monitoring, while temperature data provides additional information for evaluating plant microclimate conditions.
The IP67-rated waterproof design allows the sensor to be deployed outdoors for long-term monitoring.

Comparison

Feature	RS-WS-YM-1 Leaf Surface Temperature & Humidity Sensor	Conventional Air Temperature & Humidity Sensor
Measurement Target	Simulated leaf surface	Ambient air
Leaf Surface Moisture Detection	Supported	Not designed for this purpose
Small Water Droplet Detection	High sensitivity	Limited
Leaf Surface Temperature	Supported	Measures ambient temperature
Leaf Simulation Structure	Yes	No
Outdoor Continuous Monitoring	Supported	Depends on sensor design
Protection Rating	IP67	Varies
Communication	RS485 Modbus	Varies

FAQ
Q1: What does the RS-WS-YM-1 measure?
It measures leaf surface moisture/humidity and temperature, using a simulated leaf structure to reproduce relevant surface characteristics.
Q2: How does the sensor detect leaf surface moisture?
It detects changes in the dielectric constant caused by moisture on the simulated leaf surface.
Q3: Can it detect small water droplets?
Yes. The sensor uses a high-sensitivity simulated leaf structure and denser leaf-vein patterns to detect small amounts of residual moisture and smaller water droplets.
Q4: What is the humidity measurement range?
The humidity measurement range is 0–100%RH, with a resolution of 0.1%RH.
Q5: What is the temperature measurement range?
The temperature range is -40°C to 80°C, with a resolution of 0.1°C and an accuracy of ±0.5°C at 25°C.
Q6: Is the sensor suitable for outdoor use?
Yes. The sensor uses black flame-retardant epoxy resin encapsulation and has an IP67 protection rating, making it suitable for long-term outdoor applications.
Q7: What communication interface does it use?
The standard digital output is RS485 with Modbus protocol. Analog output configurations including 4–20 mA, 0–5 V, and 0–10 V are also available.

Product Advantages
The RS-WS-YM-1 Leaf Surface Temperature and Humidity Sensor combines realistic leaf simulation, high-sensitivity moisture detection, accurate temperature measurement, low power consumption, and IP67 protection. Unlike conventional ambient temperature and humidity sensors, it is specifically designed to monitor conditions directly related to the leaf surface, making it well suited for smart agriculture, crop disease research, plant physiology studies, and long-term outdoor agricultural monitoring.

FAQ
Q1: What does the RS-WS-YM-1 measure?
It measures leaf surface moisture/humidity and temperature, using a simulated leaf structure to reproduce relevant surface characteristics.
Q2: How does the sensor detect leaf surface moisture?
It detects changes in the dielectric constant caused by moisture on the simulated leaf surface.
Q3: Can it detect small water droplets?
Yes. The sensor uses a high-sensitivity simulated leaf structure and denser leaf-vein patterns to detect small amounts of residual moisture and smaller water droplets.
Q4: What is the humidity measurement range?
The humidity measurement range is 0–100%RH, with a resolution of 0.1%RH.
Q5: What is the temperature measurement range?
The temperature range is -40°C to 80°C, with a resolution of 0.1°C and an accuracy of ±0.5°C at 25°C.
Q6: Is the sensor suitable for outdoor use?
Yes. The sensor uses black flame-retardant epoxy resin encapsulation and has an IP67 protection rating, making it suitable for long-term outdoor applications.
Q7: What communication interface does it use?
The standard digital output is RS485 with Modbus protocol. Analog output configurations including 4–20 mA, 0–5 V, and 0–10 V are also available.