Highly sensitive irradiance measurements to 1000 m water depth.
Gather highly sensitive data on light irradiance with the Chelsea PAR sensor. With a depth rating of 1000 m, the PAR sensor can be fitted to profiling systems or oceanographic moorings to get a complete picture of the photic zone. The long term calibration stability and titanium corrosion-resistant housing make it ideal for long term deployments on vehicles or wider instrumentation systems in all water environments.
How does it work?
Light is efficiently collected by a PTFE 2p Scalar Collector, supported by a clear acetal dome, and is directed onto a photodiode via a filter from which a (1+cosӨ)/2 response is obtained. With use of logarithmic amplification
