FMS 2 Chlorophyll Fluorimeter

The FMS 2+ chlorophyll fluorimeter consists of a control unit housing all of the electronics, optics and light sources necessary to derive most common chlorophyll fluorescence parameters. These are optically linked to the sample by a statistically randomised fibre-optic cable that is positioned in the FMS/PTL PAR/temperature leafclip. The fibre-optic cable is also suitable for insertion into a range of sample containers such as oxygen electrode chambers, older gas-analysis chambers, petri dishes and microtitre plates.
  • Upgraded model with LED light sources replacing older halogen bulbs

  • USB connectivity replacing older RS232 communications

  • Pulse-modulated system with compact, field-portable Design

  • Integral LED light sources for modulation beam, actinic & saturating pulses

  • Leafclip with integral PAR/temperature sensor

  • Field-swappable multi-battery system

  • Temperature compensated electronics for stable Fo measurement

  • Programmable by user-friendly iconised script editor

  • Windows® data acquisition & data analysis software

Suitability Field and lab-based measurement assays
Light sources
  • Modulation beam: Temperature compensated 594nm amber LED with 4-step frequency control (optional 470nm blue LED)
  • Ultra-bright white LED: Actinic >3,500 μmol m-2 s-1, saturating >13,000 μmol m-2 s-1 at sample surface
  • Far-red: 735nm LED
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 mV – 4095 mV)
Storage 256 Kb backed up RAM storing up to 2,430 full trace or 12,850 parameter only Fv/Fm data sets
Display 20 x 4 LCD display