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Specification Sheet



Comparative response of the LINPAR to
radiation compared to the ideal PAR response
Home      Plant      Plant Light      LINPAR - Linear PAR Sensor

Optimal logging solution:   Light Sensor Meter

LINPAR - Linear PAR Sensor

PAR within plant canopies
The LINPAR is designed for the measurement of photosynthetically active radiation (PAR) within plant canopies. There are 33 sensors that are mounted within a 1 metre anodised "U" section tube. The sensors are covered with a 3mm diffuser providing an integrated reading over 850mm section of the sensor. At the cable end there are no sensors in the first 70mm and in the last 50mm at the distal end to provide for attachment. An integral "bulls eye" levelling sensor is provided.

For complete canopy monitoring solutions the LSM-LINPAR can be used with the SFM-1 Sap Flow Meter, PSY-1 Psychrometer and the DRL26 Dendrometer.



Specifications

Sensor Specifications

Materials Anodised Aluminium, Acrylic. IP65 sealed
Cable 5m Enhanced polyethylene screened twin 18 x 0.1mm
Sensor 33, GaAsP Photodiodes.350 - 680nm. Peak at 640 nm
Sensitivity 1 mV/10 μmol / m2 / s (V version)
Temperature Sensitivity ± 0.15% °C at peak response, from 0 - 50 C
Linearity 1% over 0 - 2000 µmol / m2 / s
Uniformity of Sensing Surface Better than 2% over 0.85 sensing length
Response Time 2μs. 10 - 90%
Output V version (Voltage Version): 200mV / 2,000 µmol / m2 / s
A version (Current Version): ~1.8 µA / 2,000 µmol / m2 / s
Operating Temperature Range -20 ° C - +50 °C
Cable Connections Blue........0
Clear.......+ Screen. Uncoated wire connected to plastic screen
Dimensions 1.2 cm x 1.5 cm x 1m
Materials Anodised aluminium and acrylic

Meter Specifications

Instrument Logging
Instrument Specification Brochure
Analogue Channels 5 double ended or 10 single ended
Resolution 0.00001V—24-Bit
Accuracy 0.001V
Minimum Logging Interval 1 second
Delayed Start Suspend Logging, Customised Intervals
Sampling Frequency 10Hz
Data
Communications USB, Wireless Radio Frequency 2.4 GHz
Data Storage MicroSD Card, SD, SDHC & SDXC Compatible (FAT32 format)
Software Compatibility Windows XP, Vista and Windows 7
Data Compatibility FAT32 compatible for direct exchange of SD card with any Windows PC
Data File Format Comma Separated Values (CSV) for compatibility with all software programs
Memory Capacity 2GB expandable to 64GB
Operating Conditions
Temperature Range -40 ° C to +80 ° C
R/H Range 0-100%
Upgradable User Upgradeable firmware using USB boot strap loader function
Power
Power supply 12V DC 2-wire non polarized bus
Power Consumption 20 mA
Internal Battery Monitoring Logging internal battery voltage & charging current
Charging Rate Automatic variable rate of charging to maximise solar panel charging current on full sun days and or under low light cloudy conditions Variable current 10 mA to 200 mA


Image Gallery

Features
  • The LINPAR is ideally suited to be connected to the Light Sensor Meter (LSM)
  • The LSM can support up to 10 LINPAR sensors for complete canopy light characterisation
  • Variables calculated include PAR, leaf area index, sunflecks, and canopy extinction co-efficient
Optimal logging solution:   
Light Sensor Meter


Logging:
  • Stand-alone logging
  • MicroSD expandable memory
  • Wireless connectivity and data transfer
  • Simple conversion and scripting
  • Flexible sensor calibration, look-up tables, and user scripts
  • 24-Bit resolution
  • IP68 rated water proof enclosure
  • Free Windows utility configuration software
  • Optional wireless logging via MCC1    
Power management:
  • Field: solar power and 12V battery
  • Lab: main power supply
  • Internal Lithium-Polymer battery
  • Internal voltage regulation
  • Optical isolation lightening protection

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ICT International Pty Ltd     P.O Box 503, Armidale, NSW, 2350, Australia     Ph: +61-2-6772 6770

ICT International has provided solutions for soil, plant and environmental monitoring since 1982.
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