Metal housing with cables connecting the Unit to the Power-and-Control-Unit PHYTO-C; containing measuring and actinic / saturation pulse LEDs, miniature fiber couplers with SMA-fiber connectors, photomultiplier and pulse preamplifier; separate 9-armed fiberoptics
Dimensions
115 mm x 90 mm x 95 mm (L x W x H)
Weight
Approx. 600 g
Measuring LEDs
Total of 4 LEDs for pulse modulated measuring light peaking at 470, 520, 645 and 665 nm, focused on entrance of 1 mm Ø single plastic fibers with SMA-connectors
Actinic LEDs
Total of 4 LEDs for actinic light / saturation pulses peaking at 655 nm focused on entrance of 1 mm Ø single plastic fibers with SMA-connectors; actinic intensity up to 1800 μmol m-2 s-1 of photosynthetically active radiation (PAR); Saturation Pulse intensity up to 3500 μmol m-2 s-1
Signal detection
Photomultiplier detector
Fiberoptics
8 arms with 1 mm Ø single plastic fibers with SMA-adaptors to be connected to measuring light and actinic light connectors on top side of emitter-detector box; central 1.5 mm Ø fiber with adapter to detector input; length 105 cm; joint end with special endpiece featuring 4 mm Ø perspex light mixing rod, length 50 mm