There are several methods to measure how much light is intercepted by a canopy in order to determine if water loss is from evaporation or transpiration. There’s the hard way. There’s the expensive way. And then there’s the smart way: the LP-80.
Rapid readings. Easy to use.
The optimal method for measuring fractional PAR (photosynthetically active radiation) is with the LP-80 Ceptometer. It’s a highly accurate way to determine canopy growth and canopy light interception, along with calculating fractional interception and crop coefficient. And because the methodology is automated, it spares you from intensive hand labor, saving you time. The LP-80’s low cost also saves your entire budget from evaporating.
Measurement Specifications
Probe PAR Sensors
Range: 0.0000 – 2500.0000 μmol/(m2s)
Resolution: 1.0000 μmol/(m2s)
External PAR Sensor
Range: 0 to 4,000 μmol/(m2s) (full sunlight ~2,000 μmol/[m2s])
Resolution: 1.0000 μmol/(m2s)
Accuracy: ±5.0 %
Unattended Logging Interval
Between 1 and 60 min (user selectable)
Physical Specifications
Computer Interface
Locking 5-pin sealed circular connector to RS-232 cable
Controller
Length: 15.8 cm (6.20 in)
Width: 9.5 cm (3.75 in)
Height: 3.3 cm (1.30 in)
Weight: 0.6 kg (1.21 lb) with batteries
External PAR Sensor
Locking 5-pin sealed circular connector on 5-m cable
External Sensor Dimensions
Diameter: 24.0 mm (0.94 in)
Height: 27.0 mm (1.06 in)
Probe Dimensions
Length: 86.5 cm (34.06 in)
Width: 19.0 mm (0.75 in)
Height: 9.5 mm (0.38 in)
Probe Sensors
Number: 80
Type: Photosynthetically active radiation sensor
External Sensor
Number: 1
Type: Apogee SQ110 photosynthetically active radiation sensor
Data Storage
1 MB flash memory
Operating Temperature Range
Minimum: 0.00 °C
Maximum: 50.00 °C
Operating Relative Humidity Range
Minimum: 0 %
Maximum: 100 %
Power
4 AA batteries, included
Other
Compliance
EM ISO/IEC 17050:2010 (CE Mark)
GSA
View GSA details
