The ΔLA-B (ΔT Leaf-to-Air-Broadleaf type) is a highly precise sensor for continuous measurements of temperature differences between leaf surface and ambient air. The signal is captured by means of a very thin chain (10-fold) of thermocouples. Distributed over the leaf surface, multiple measurement points are directly touching the leaf surface, providing a spatially integrative temperature signal. Designed for broad leaves, the sensor is mounted at the leaf with a light-weight wire frame.
Advantages
- Precise and continuous measurement of leaf-to-air temperature difference
- Multiple measurement points distributed over leaf surface, spatially integrative sensor signal
- Sensor output in mV, recordable with most of the common data loggers, no calibration is needed for signal transformation in °C
- Minimal load on the target, no injury to plants
- Installation resistant against wind and rain
- Leaf size and shape specific ordering possible
Limits
- Not suitable for leaf sizes smaller than 3 cm
Delivery
- Complete with 5 m cable
- Fixing materials and installation tools
Options / Ordering Information
- Cable extension (50 m max, please specify in meters)
- If necessary, adjustments for different leaf sizes and shapes are possible
- Data Logger with integrated light, air humidity and air temperature sensors.
leaf temperature sensor type ΔLA-B on common hazel
Technical specifications
Name | ΔLA-B : ΔT Leaf-to-Air Sensor, broadleaf type |
Application position,suitable for leaf size | Leaf surface, standard size for leaves between 3 to 20 cm length |
Principle ofmeasurement | Chain of thermocouples, 10-fold |
Options | Distance between measurements points at the leaf surface and measurement points in the air adjustable |
Output signal type | mVolt |
Range of the sensor | ΔT = +/- 20°C |
Accuracy | Depends on data logger:CR1000: +/-(0,06% x Messwerte+0,01)°C |
Resolution | CR1000: 0,0025 °C |
Size and weight | 2 cm x 2 cm x 0,1 cm, ca. 2 g |
Standard cable length | 5 m, max. 50 m |
Operating conditions | Air temperature:-25 to +70 °C, (CR1000: 0 to 40°C), Air humidity: 0 to 100% |