Leaf & air temperature sensor - paired micro-thermistors, SDI-12 : LAT-B3 / LAT-B4 | Ecomatik

The ECOMATIK LAT-B3 and LAT-B4 are leaf & air temperature sensors designed for continuous measurement of leaf surface temperature (Tleaf) and ambient air temperature (Tair). Each sensor integrates two individually matched micro-thermistors to deliver highly accurate measurement of the leaf-to-air temperature difference (ΔTleaf-air).

Specifically engineered for broad leaves, the sensor attaches directly to the leaf using an ultra-light clamping system (magnet or carbon rod), minimizing thermal disturbance and preserving natural leaf conditions during measurement.

Advantages

• Simultaneous measurement of leaf and air temperature
• Excellent accuracy on ΔTleaf-air: ±0.2 °C across the full range
• Individually paired probes for optimal measurement consistency
• Ultra-light mounting suitable for natural leaves
• SDI-12 and analog compatibility

Main Specifications

• Measured parameters: Tleaf, Tair, and ΔTleaf-air
• Measurement range: -25 °C to +70 °C
• ΔTleaf-air accuracy: ±0.2 °C across the full range
• Outputs:
  • Digital: SDI-12
  • Analog: V DC (conversion via provided formula)
• Sensor spacing: user-adjustable up to 35 mm
• Operating conditions:
  • Air temperature: -25 to +70 °C
  • Humidity: 0 to 100%
• Dimensions / weight: 12 mm diameter, approx. 0.9 g
• Power supply: switched Vex 0.5 to 2.5 V, negligible consumption
• Cable: 0.5 m + plug-in 4.5 m extension (up to 50 m max)

Typical Applications

• Plant ecophysiology research
• Plant water stress studies
• Microclimate monitoring in forests, crops, and greenhouses
• Long-term agro-environmental measurements
• Scientific instrumentation in ecology and plant biology

Why Choose LAT-B3 / LAT-B4

LAT-B3 and LAT-B4 deliver direct and accurate measurement of the leaf-to-air thermal gradient, a key parameter for analyzing plant energy balance and physiological exchange processes. Their very low mass, high accuracy, and compatibility with wired or wireless acquisition systems make them reference sensors for demanding scientific measurement campaigns.