Bio Instruments S.R.L.
Phyto-Sensor Group

Connecting People and Plants

  • English
  • Русский
  • Home
    • News
  • Products
    • PTM-48A Photosynthesis Monitor
      • Overview
      • Basic configuration
      • Specifications
      • Partitioning of CO2 exchange
      • Stomatal conductance monitoring
      • Software
      • Documentation
      • Literature and References
      • Sensors
    • PM-11 Phytomonitor
      • Overview
      • Specifications
      • Communication options
      • Mounting options
      • Recommended assemblies
      • Documentation
      • Software
      • Sensors
    • Sensors for PTM-48A and PM-11
      • Overview
      • Plant Sensors
        • SD-5P, SD-6P Stem Micro-Variation sensors
        • DE-1P Dendrometer
        • FI-LP, FI-MP, FI-SP Fruit Growth sensors
        • FI-XSP Extra Small Fruit Growth sensor
        • LT-1P Leaf Temperature sensor
        • LT-IRP Infrared Leaf Temperature sensor
        • SF-4P, SF-5P Sap Flow sensors
        • SA-20P Auxanometer
      • Environmental Sensors
        • PIR-1P Quantum sensor
        • TIR-4P Pyranometer
        • SMS-5P Soil Moisture sensor
        • LWS-02P Leaf Wetness sensor
        • ST-21P Soil Temperature sensor
        • SMTE Soil Moisture, Temperature, EC sensor
        • RTH-11 Meter and RTH-48 Meter
    • Sensors for third party loggers
      • Overview
      • Plant Sensors
        • SD-5M, SD-6M Stem Micro-Variation sensors
        • DE-1M Dendrometer
        • FI-LM, FI-MM, FI-SM Fruit Growth sensors
        • FI-XSM Extra Small Fruit Growth sensor
        • LT-1M Leaf Temperature sensor
        • SF-4M, SF-5M Sap Flow sensors
        • SA-20M Auxanometer
      • Environmental Sensors
        • PIR-1M Quantum sensor
        • TIR-4M Pyranometer
        • SMS-5M Soil Moisture sensor
        • ST-21M Soil Temperature sensor
  • Documentation
  • About
  • PTM-48A Photosynthesis Monitor
    • Overview
    • Basic configuration
    • Specifications
    • Partitioning of CO2 exchange
    • Stomatal conductance monitoring
    • Software
    • Documentation
    • Literature and References
    • Sensors
  • PM-11 Phytomonitor
    • Overview
    • Specifications
    • Communication options
    • Mounting options
    • Recommended assemblies
    • Documentation
    • Software
    • Sensors
  • Sensors for PTM-48A and PM-11
    • Overview
    • Plant Sensors
      • SD-5P, SD-6P Stem Micro-Variation sensors
      • DE-1P Dendrometer
      • FI-LP, FI-MP, FI-SP Fruit Growth sensors
      • FI-XSP Extra Small Fruit Growth sensor
      • LT-1P Leaf Temperature sensor
      • LT-IRP Infrared Leaf Temperature sensor
      • SF-4P, SF-5P Sap Flow sensors
      • SA-20P Auxanometer
    • Environmental Sensors
      • PIR-1P Quantum sensor
      • TIR-4P Pyranometer
      • SMS-5P Soil Moisture sensor
      • LWS-02P Leaf Wetness sensor
      • ST-21P Soil Temperature sensor
      • SMTE Soil Moisture, Temperature, EC sensor
      • RTH-11 Meter and RTH-48 Meter
  • Sensors for third party loggers
    • Overview
    • Plant Sensors
      • SD-5M, SD-6M Stem Micro-Variation sensors
      • DE-1M Dendrometer
      • FI-LM, FI-MM, FI-SM Fruit Growth sensors
      • FI-XSM Extra Small Fruit Growth sensor
      • LT-1M Leaf Temperature sensor
      • SF-4M, SF-5M Sap Flow sensors
      • SA-20M Auxanometer
    • Environmental Sensors
      • PIR-1M Quantum sensor
      • TIR-4M Pyranometer
      • SMS-5M Soil Moisture sensor
      • ST-21M Soil Temperature sensor
LT-1M Leaf Temperature sensor probe on leaf
LT-1M Leaf Temperature sensor

LT-1M Leaf Temperature sensor

Overview

The LT-1M sensor is a subminiature touch probe that measures absolute temperature of a leaf. The lightweight stainless steel wire clip holds a high precision glass encapsulated thermistor, which is about millimeter in diameter. Small size of the probe and its special design provide almost negligible disturbance of the natural leaf temperature. The thermistor is connected to the clip by a thin 0.15 mm leads to minimize heat conduction and response time. All conductors are proofed to avoid corrosion under the wet operating conditions.

The probe is connected by a standard 1-meter cable to the waterproof box with the signal conditioner inside.

The output cable length should be specified in the order if required.

Every sensor is tuned and calibrated within the measurement range. The tolerance range is ±0.08 ℃ only.

Specifications

Measurement range0 to 50 ℃
Instrumental accuracy< 0.15 ℃
Output
LT-1M0 to 2 VDC
LT-1Mi4 to 20 mA
Supply voltage10 to 30 VDC
Power
LT-1M1.5 W max
LT-1Mi2 W max
Probe dimensions, mm50 W × 20 H × 10 D
Probe weight1.6 g
Contact area of thermistorAbout 1 mm2
Standard calibrationT(℃)=ƒ(V, Volt)
Best fit:T= 1.8649V3 − 4.5048V2 + 26.542V − 0.0099
Approximation error< ±0.06 ℃
Linear fit:T= 24.477V − 0.1352
Approximation error< ±1 ℃
Tolerance range±0.08 ℃
Cable length between probe and signal conditioner1  m

Documentation

LT-1M, LT-1Mi Leaf Temperature Sensor Datasheet

See also:

  • LT-IRM Infrared Leaf Temperature sensor
  • LT-LC Leaf Temperature Sensor (with LC-4B Leaf Chamber)
http://Phyto-Sensor.com
© 2010 Phyto-Sensor Group