Temperature broad leaf (LAT-B3)
Leaf-to-Air-Temperature sensors (LAT) are used for direct, continuous and high-precision temperature measurements. The measured temperature parameters include absolute temperatures of the leaf surface, leaf-surrounding ambient air (Tair), and the temperature difference between leaf surface and ambient air (ΔTleaf-to-air). These devices are suitable for long-term application in outdoor conditions. Due to their extremely low power consumption, Ecomatik LAT sensors are ideal for battery-powered solutions, e.g., in IoT applications.
LAT-B3: Leaf-to-Air Temperature Broadleaf Type
With it's ultra-light-weight magnetic clamp mechanism the LAT-B3’s is mounted on a leaf where it uses two high-precision micro-thermistor probes to simultaneously measures absolute leaf temperature (Tleaf) and air temperature (Tair). In every individual sensor the two thermistor probes are factory-matched, ensuring maximum precision when determining the difference between leaf and air temperature (ΔTleaf-to-air).
Advantages
- Direct, continuous and highly accurate measurement of blade temperature (Tleaf), air temperature (Tair), and leaf-air temperature difference (ΔTleaf-to-air)
- Small, lightweight and flexible sensors to minimize loading on and damage to the measurement object
- Easy installation
- Maximum stability against wind and rain; specifically designed for field conditions
- Customizable production possible, e.g. for specific leaf/needle size
- Extremely low power consumption, suitable for IoT application
- Sensor signal in mV, measurable with most common data loggers
Limits
- Not suitable for leaves with a length of less than 1.4 mm and a width of smaller than 0.8 or larger than 20 cm and not suitable for leaves with a thickness of > 0.7 mm
Technical Data
Sensor model name | Leaf temperature sensor for broad leaves Type LAT-B3 |
Scope of application | For continuous measurement of leaf surface (Tleaf), surrounding ambient air temperature (Tair), and leaf-to-air temperature difference (Δtleaf-to-air) |
Suitable for leaf dimensions | Leaf length > 1.4 cm, leaf width between 0.8 and 20 cm (other dimensions on request), stable magnet attachment to leaves with a thickness of up to 0.7 mm. |
Special feature/limitations | Measurement of the absolute temperatures of leaf surface and ambient air, high accuracy in leaf-to-air temperature difference (individually matched probes) Dual-probe spacing: User-configurable distance between Tleaf and Tair probes between 0 to max. 35 mm |
Measurement range | -25 to +70 °C |
Resolution | Theoretically infinite depending on the data logger used e.g. CR300-Logger (at 25°C): < 0,000025 °C |
Accuracy | Sensor dependent: Tolerace of Leaf-to-Air-Temperature difference (∆Leaf-Air): Logger dependent, e.g.: |
Data logger requirements & sensor output signal | Minimum logger requirements: 2 single ended channels, providing a switched reference voltage (Vex) Sensor output signal: analogue DC voltage in the range from 0 to Vex |
Power supply | VEX (! Regulated!) 0.5 to 2.5 VDC, required excitation interval time max. 100 ms. Power consumption negligibly low, max. 16.5 nWh per measurement |
Operational conditions | Air temperature: -25 to 70 ° C, rel. humidity: 0 to 100% |
Size and Weight | Diameter sensor 12mm, weight 0.9g (only sensor, without cable) |
Sensor cable length | 0.5m + 4.5m pluggable extension, plug extension up to max. 50 m possible |