LS 20 Sheet Temperature Sensor Type ΔLA-C View larger

LS 20 Sheet Temperature Sensor Type ΔLA-C

AO-LS 20



ΔLA-C Leaf temperature sensor for conifer needles. Extremely lightweight. Direct, highly precise and continuous measurements of leaf-to-air temperature difference, range +/- 20 °C.
Spatial integration via multiple measurement points. Suitable for needle sizes > 3 mm length. Operating temperature -25 to 70 °C. Complete with 5 m sensor cable.

● Direct, continuous and highly accurate, measurements of the temperature difference between leaf surface and air (ΔT).
● Small and light-weight sensor with minimum load on the leaf
● Multiple measurement points distributed over the leaf surface provide a spatially integrative temperature signal
● Sensor signal in mV, recordable with most common data loggers
●    No calibration is needed for the simple and exact transformation of the mV-signal into ΔT in °C
●  Suitable for measurements under field conditions
●  No power consumption
●  Easy installation

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- 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.

Technical specifications

Name ΔLA-C : ΔT Leaf-to-Air Sensor, conifer type
Application position,
suitable for leaf size
Needle surface, needle length > 3mm
Principle of
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%

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