PAR (Photosynthetically Active Radiation) Sensor

Overview This high-precision, quick-response PAR sensor is designed for measurements in the visible spectrum.

The PAR sensor is ideal for indoor and outdoor photosynthesis measurements and can be used in Biology, Ecology, and Aqua Culture experiments.

How it works The PAR sensor is a high precision Photoelectric cell. Inside this photoelectric cell there is a small plate made of elements called pin-diodes. When a reversed fixed voltage is applied to the photoelectric cell, any photon that hits the pin-diodes causes the photoelectric cell to release an electron. The result is that when light levels are higher, the current through the photoelectric cell is higher. The current from the cell then passes through a resistor. The voltage is measured on this resistor and adjusted to the range of 0 - 3 V which is sent to the Analog-Digital converter of the einstein™ device. The result is then displayed.