FIBER Version

Emitter-Detector Unit
WATER-EDF1.5R (red)

Design: Metal housing, containing LED-light sources, photomultiplier detector, pulse preamplifier, and port with lateral plastic screw for fixation of fiber optics. Permanently attached data cables connecting to photomultiplier (PM) and AUX output sockets of PAM‑CONTROL unit. Equipped with mounting rod for fixing the housing and on the stand ST‑101.

Fiber optics: Three 1.5 mm diameter plastic fiber optics (lengths 200, 600 and 1200 mm).

LED Sources: LED-array for pulse modulated, red fluorescence measuring light (620 nm), red actinic light and saturation pulses (635 nm), as well as blue actinic light (460 nm) for preferential PS I excitation in cyanobacteria. Alternative to blue light, far-red LEDs (730 nm) can be build in for preferential PS I excitation in non-cyanobacterial photosynthetic organisms. Actinic intensity up to 1500 µmol quanta m‑2s‑1 of photosynthetically active radiation (PAR). Saturation pulse intensity up to 3000 µmol quanta m‑2s‑1

Signal detection: Photomultiplier detector based on photosensor module H‑6779‑01 (Hamamatsu) with high red sensitivity, featuring pulse preamplifier and automatic overload switch-off; fluorescence detection at wavelengths > 710 nm

Dimensions: 11.5 cm x 9 cm x 5.5 cm (L x W x H)

Weight: 550 g (incl. cable 0.6 m long)

Emitter-Detector Unit
WATER-EDF1.5B (blue)

Identical to Emitter-Detector Unit WATER-EDF1.5R except:

LED Sources: LED-array for pulse modulated, blue fluorescence measuring light (460 nm), blue actinic light and saturation pulses (460 nm), as well as far-red light (740 nm) for preferential PS I excitation



Mini Quantum Sensor US-MQS/WB

Design of sensor: Mini quantum sensor for selective PAR (photosynthetically active radiation) measurement, cosine corrected for PPFD (photosynthetical photon flux density) measurement.

Sensor housing: Black anodized aluminum housing

Diffuser material: Perspex

Signal detection: High stability silicon photovoltaic detector with filter set for PAR correction (to learn more about the typical sensitivity see “General Features”). Signal output typically -2 μA / (1000 μmol m-2 s-1)

Temperature coefficient of photodiode: 0.01 %/K

Absolute calibration: ± 5 %


Angular dependence: error < 4 % between angles from -80° to +80° from normal axis

Immersion coefficient: Typically 1.32

Operating temperature: - 5 °C … + 45 °C

Cable length: 3 m

Connector: BNC

Power supply: Not required

Size: Height: 16 mm; diameter: 14 mm; Diffuser diameter: 5.5 mm

Weight: 32 g

Subject to change without prior notice