Double-Modulation Fluorometer FL 6000 measures chlorophyll α fluorescence. Measured fluorescence emission is excited by a set of light-emitting diodes that generate measuring flashes of few microseconds in duration and low light intensity; the photochemistry is driven by single-turnover flashes or by continuous actinic irradiance. Chlorophyll α fluorescence is detected by a PIN photodiode and digitized by a 16-bit A/D converter.
Key Features
l SuperHead measuring unit –measurements performed in standard cuvette for sample suspensions of algae or cyanobacteria
l Unifed control unit for all FL 6000 versions, compatible with different measuring units.
l Light intensities and timings are software controlled separately for each LED set with 100 ns resolution
l Four sets of LEDs:
- measuring light 1 – red
- measuring light 2 – blue
- actinic light – red
- single-turnover flash – red
l PIN photodiode detector with 40× variable gain for signal acquisition with 1MHz/16-bit maximal accuracy
l Pulse Amplitude Modulation measurements
Measured fluorescence parameters: F0, FM, FV, F’0, F’M, F’V, FT
Light Sources: 620 nm and 460 nm in standard versions; other wavelengths available•
Single Turnover Flash: 100,000 µmol.m-2.s-1 (max. duration 150 µs)
Actinic Light Irradiance: Up to 3,000 µmol.m-2.s-1
Custom-Defned Protocols: Variable timing, special language and scripts
A/D bit Resolution: 16 bit
Detector time response: 1 µs (FL 6000-F), 4 µs (FL 6000-S)
Communication Port: RS 232 with USB port converter
Control box FL 6000 dimension: 29 × 20 × 11 cm
Measuring unit dimension: SuperHead: diameter 16 × 6 cm
Total weight: Appr. 5 kg
Power Input: 20 W
Electrical: 90 – 240 V
