The ΔLA-C (ΔT Leaf-to-Air-Conifer type) is a highly precise sensor for continuous measurements of temperature differences between conifer needle surface and ambient air. The signal is captured by means of a very thin chain (10-fold) of thermocouples. Designed for conifer needles, the sensor with its multiple measurement points is directly attached to different needles, providing a spatially integrative temperature signal.
Advantages
Precise and continuous measurement of leaf-to-air temperature difference
Multiple measurement points, 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 needles shorter than 3 mm
Delivery
Complete with 5 m cable
Fixing materials and installation tools
Options / Ordering Information
Cable extension (50m 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.
Name: ΔLA-C : ΔT Leaf-to-Air Sensor, conifer type
Application position,suitable for leaf size: Needle surface, needle length > 3mm
Principle ofmeasurement: Chain of thermocouples, 10-fold
Options: Distance between measurements points at the needle surface and measurement points in the air adjustable
Output: signal typemVolt
Range of the sensor: ΔT = +/- 20°C
Accuracy: Depends on data logger:DL 80: +/-(0,04% x Messwerte+0,015)°C; CR1000: +/-(0,06% x Messwerte+0,01)°C
Resolution: DL 80: 0,0008 °C; CR1000: 0,0025 °C
Size and weight: ca. 0.5 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%
