Introduction to Sensor
ACCUPAR (LP-80)
Measure Canopy Growth. Understand Light Interception
The ACCUPAR LP-80 is a highly accurate instrument for measuring canopy light interception and evaluating plant canopy growth. It measures PAR transmission and automatically calculates Leaf Area Index (LAI) in real time. With an above-canopy sensor, the LP-80 enables simultaneous above- and below-canopy PAR measurements for comprehensive crop and vegetation analysis.
Specifications
Specifications
Measurement Specifications
| Parameter | Specifications |
|---|---|
| Probe PAR Sensors | Range: 0.0 – 2500.0 μmol/(m²s) Resolution: 1.0 μmol/(m²s) |
| External PAR Sensor | Range: 0 to 4,000 μmol/(m²s) (full sunlight ~2,000 μmol/[m²s]) Resolution: 1.0 μmol/(m²s) Accuracy: ±5.0 % |
| Unattended Logging Interval | Between 1 and 60 min (user selectable) |
Physical Specifications
| Parameter | 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 °C Maximum: 50 °C |
| Operating Relative Humidity Range | Minimum: 0 % Maximum: 100 % |
| Power | 4 AA batteries, included |
Other
| Parameter | Specifications |
|---|---|
| Compliance | EM ISO/IEC 17050:2010 (CE Mark) |
| GSA | View GSA details |
Features
Special Features
01
Canopy PAR Measurement
Measures photosynthetically active radiation (PAR) within plant canopies to evaluate light availability.
02
Lightweight & Self-Contained
Compact and lightweight design makes the LP-80 easy to carry, operate, and use in the field.
03
Unattended Data Logging
Can record measurements unattended for short periods, reducing the need for continuous supervision.
04
Simultaneous PAR Measurement
The above-canopy sensor enables PAR measurement above and below the canopy for accurate analysis.
Applications

