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LAT-C Plant Leaf -&- Air Temperature Sensor (needle type)

发布时间：2024-05-17

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Norwegian spruce ΔLA-C leaf surface temperature sensor

LAT-C(Plant Needle-type leaf -&- Air Temperature) is a high-precision sensor for long-term monitoring of needle surface and ambient air temperature. The absolute air temperature (Tair) is measured by a tiny, high-precision thermistor probe, while the temperature difference (△T) between the air and the needle surface is obtained by a thin thermopile (10x). Multiple measurement sites distributed on the blade surface are in direct contact with the blade surface and generate a spatially integrated temperature signal. The LAT-C is an ultra-light sensor designed for needles with multiple measuring points that are directly connected to multiple needles and generate a spatially integrated temperature signal.

 

Technical parameter

 

name

LAT-C: Leaf -&- Air Temperature sensor (needle type) (*)

Suitable for blade size and mounting 

position

Needle surface, needle length > 3mm

Sensor measurement range


- Thermoelectric reactor (△T blade - air)


- Thermistor (Tair)


 

DT = +/- 20°C


Tair = -40 to 125°C


precision


- Thermoelectric reactor (T blade - Air)


- Thermistor (Tair)


 

CR1000: +/-(0.06%* Reading +0.01°C) CR1000: +/- 0.2 °C

Resolution


- Thermoelectric reactor (△T blade - air)


- Thermistor (Tair)


 

Theoretically infinite, mainly depending on the number 

extraction (e.g., CR1000 is 0.0025°C)


Theoretically infinite, mainly depending on the number 

extraction (e.g., 0.05°C for CR1000)


Specification and weight

Electric heating reactor length 10 cm, ca.0.5 g

Signal output


- Thermoelectric reactor (△T blade - air)


- Thermistor (Tair)


 


When the DT range is +/ -20 °, the signal output range is ± 8.5 mV


Resistance (Ω) or voltage (mV) output when using bridge circuit 

(bridge circuit and 20 kΩ resistance included in standard)


Power source


- Thermoelectric reactor (△T blade - air)


- Thermistor (Tair)


 

No requirement


Usually 2500 mV excitation voltage


Working environment

Temperature: -25 to 70 °C, air humidity: 0 to 100%