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.
leaf temperature sensor type ΔLA-C on Norway spruce
Technical specifications
| 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 type | mVolt |
| 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% |