The FMS 1 uses the pulse-modulated technique to measure chlorophyll
fluorescence emission from samples under ambient illumination
conditions, whilst they are engaged in photosynthesis. The system
comprises a mains-powered control unit which houses all of the
electronics and light sources required from measurement of most
commonly used parameters. The light sources include:
- 594 nm amber modulating beam
- Optional 470 nm blue LED
- Dual-purpose halogen actinic 0 to 3,000 µmolm-2s-1 in 50
steps
- Saturating pulse lamp -0 to 20,000 µmolm-2s-1 in 100 steps.
- 735 nm far-red LED source for preferential PSI excitation.
A custom fibre-optic interface optically links the control unit
to the sample.
Accessory fibre-optic adapters ensure compatibility with the
complete range of Hansatech oxygen electrode products for
simultaneous oxygen and fluorescence measurements from
chloroplasts, algal suspensions, macroalgae or leaf-discs.
An optional PAR / Temperature leafclip is available for more
comprehensive analysis of environmental conditions.
- Weight
2.8 Kg (excluding mains supply).
- Detector
PIN photodiode with >700 nm filter.
- Detection Method
Rapid Peak Pulse Tracking.
- Sampling Rate
Variable 10 Hz to 20 kHz depending upon instrument mode.
- Electronics
16 bit 165 microprocessor.
8 A/D channels 12 bit resolution.
4 external digital I/O lines.
Single 12 bit buffered DAC (0 to 4095 mV).
- Storage Capacity
256 Kb backed up RAM.
2,430 full trace or 12,850 parameter only Fv/Fm data sets.
- User Interface
20 x 4 LCD display.
4 button keypad.
- Power Supply
95 to 260 V universal input mains supply.
- Leafclips
10 x dark adaptation clips with fibre-optic adapter.
Optional PAR / temperature clip.
Cosine corrected PAR sensor (0 to 20,000 µmolm-2s-1),
Thermocouple (-10 to 90 °C),
Remote trigger button and tripod mount.
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