QSRED
Large Area Quantum Sensor
- Compact, fully portable handheld light meter with matched cosine corrected, large area quantum sensor
- LCD digital display of PAR radiation
- Filtered for 550 - 750nm waveband
- 3 measurement ranges (0 - 20, 0 - 200 and 0 - 2000 µmol m-2 s-1)
- 0 - 2V analogue output of PAR signal
- Compatible for use with DW3, LD1/2 and LD2/3 electrode chambers as a light source calibration tool
Overview
The QSRED PAR sensor consists of a handheld display unit and matched cosine corrected, large surface area quantum sensor head containing a special high grade photocell filtered for light falling into the 550 - 750nm waveband. The quantum sensor head is fully sealed and therefore weatherproof allowing the sensor head to be positioned indefinitely in exposed positions. The QSRED sensor has been calibrated under open-sky conditions against reference pyranometers and hence referred to the World Radiometric Reference. The linearity of response is excellent with a maximum deviation of 1% up to levels of 3000 watts/m2 (greater than normal solar irradiance).
The display unit is matched to the quantum sensor head supplied ensuring correct calibration. The µmol m-2 s-1 calibrated value from the sensor is displayed on the LCD display. 3 measurement ranges allow maximum sensitivity from 0 - 2000 µmol m-2 s-1. A 0 - 2v analogue output allows measured PAR values to be plotted on a suitable recording device. The QSRED light meter is intended to be used primarily as a calibration tool for Hansatech Instruments red LED light sources. The instrument is powered by a single PP3 battery.