LS-C Mini Quantum Sensor
The Mini Quantum Sensor LS-C is a miniaturised and flat sensor that can be placed close to leaves in small spaces, for example within cuvettes. The LS-C measures photosynthetically active radiation (PAR).
The LS-C is well suited for light incident perpendicular to the surface between -30° and +30°. For a completely cosine-corrected sensor, see MQS-B.
Spectral Response
Fig. 1 Typical response between 350 nm and 750 nm of a LS-C sensor. The solid line shows the ideal response of a photon flux sensor for photosynthetically active radiation.
For comparison Fig. 2, shows the response to energy flux rate from 350 – 750 nm.
Angular Response
The LS-C sensor uses a plastic diffuser to obtain an angular response error of less than ± 3% (-30 to 30° angle). Fig. 3 shows a typical angular response curve of the LS-C sensor compared to the ideal characteristic.
| Design: | Small versatile waterproof mini quantum sensor for selective PAR measurement, cosine corrected for light incident at an angle between -30° to +30° from surface normal for PPFD (photosynthetic photon flux density) measurement, with base plate for screw connection. |
| Sensor housing: | Black plastic |
| Diffuser material: | Perspex |
| Signal detection: | High stability silicon photovoltaic detector with filter set for PAR correction (see “General Features” for typical sensitivity) |
| Signal output: | Typically- 10 μA / (1000 μmol m-2 s-1) |
| Temperature coefficient of photodiode: | 0.01 %/K |
| Absolute calibration: | ± 10% |
| Immersion coefficient: | Typically 1.15 |
| Angular dependence: | Error < 3% for angle between -30° and +30° from normal axis (see details for typical response) |
| Operating temperature: | – 5°C to + 45°C |
| Cable length: | 3 m |
| Connector: | BNC |
| Size: | Base plate: 12 mm x 7 mm x 1 mm (H x W x L); sensor housing 5 mm x 7.5 mm x 7 mm (H x W x L); diffuser diameter: 3 mm |
| Weight: | 26 g |