PARMETER Sensor for plant’s growth
Sensor for P.A.R. measures
There are similarities between the photovoltaic phenomenon and the ‘light-dependent reaction’ of photosynthesis. Sun as primary energy source, electrons that jump on the upper orbit, once hit by sunrays.
PARMETER, thanks to a dedicated filter measures the spectral portion of the light in the range 400 to 700nm along a planar surface which correspond to the PAR , Photosynthetically Active Radiation. Plants use that wavelength range to conduct photosynthesis.
Thanks to this filter, PARMETER gives a good measurements of this wavelength range. The measure of PAR along a flat surface is called PPFD or“Photosynthetic Photon Flux Density”.
It differs from “Photosynthetic Photon Flux Fluence Rate” (PPFFR) which is revealed by spherical sensors of PAR.
PARMETER measures PPFD; it can be used outdoor, in greenhouses, in water or in growth chambers.
Output is in current loop and values can be easily converted in µmol of photons per square meter per second ( µmol /(m2 * s) ) S.I. Units
Price is competitive that bring the ratio ‘precision/price’ very interesting.
|STANDARD REFERENCES||IEC 60904-2; 60904-4; 60904-10
|Input range:||Irradiation||0 ÷ 4600 μmol / m2 • s|
|Spectrum||400 ÷ 740 nm|
|Temperature||-30 ÷ 90 °C|
|Voltage||Optional kit for 0 ÷ 40mV output|
|Output accuracy:||Irradiation||± 4 % Temperature Compensated (2)|
|SensorType||Photovoltaic Silicon with Passband filter|
|Supply:||Ext. Current loop||9 ÷ 32 Vdc Protected against reverse polarity, short circ.|
|Encapsulant||UV-resistant transparent resin
Can be submerged until 10m deep water
|Cable||50cm UV-resistant cable with Female connector|
|Connector||Female M8 3 pin, IP67|
|Male M8 3 pin, IP67 for field installation|
|Dimensions||62x48x14 mm without fixing bracket|
|IP grade||IP 67|
|(2): Note: Recalibration advised after 12 months and then after 2 years.|