The LSM Light Sensor Meter is designed to continuously monitor photosynthetically active radiation (PAR).
The LSM Light Sensor Meter is most commonly used to monitor plant canopy light interception. A point PAR sensor, such as Apogee’s SQ-110, is installed above the plant canopy to measure ambient light conditions. Within and beneath the canopy, one or more LINPAR linear PAR sensors can be installed. This way, the fraction of absorbed radiation or leaf area index can be calculated.
The LSM Light Sensor Meter has an internal lithium ion battery which is charged by an external solar panel. The unit is IP65 rated and can tolerate all weather conditions encountered in the field. All data is logged to an internal 4GB MicroSD card which can be downloaded as a csv file. Data can also be downloaded via the internet if used in combination with the ICT Universal Telemetry Hub.