OPTI-SCIENCES CCM-300

OPTI-SCIENCES CCM-300 Specifications Measured Parameters : CFR or Chlorophyll Fluorescence Ratio - fluorescence emission ratio of intensity at 735nm / 700nm, or readout or relative chlorophyll content -2 in mg/ m . Measurement Area : 3 mm diameter circle, external diameter of 4 mm. However, the instrument will reliably measure samples that are much smaller than 3 mm. Resolution : Ratio 0.01 or 1 mg/ m¯ ² . Repeatability : is dependent on signal strength. For samples with low signal strength, averaging of multiple measurements is recommended. for samples with good signal strength, ratio values of + - 0.03 or better, are common Noise : < + / - 2% Source : ( 1) LED 460 nm blue diode half band width 15 nm. Detector : Two solid state, high sensitivity detectors. Band limiting filter sets provided. Dual wavelength detection at the same time. 700nn to 710nm, and 730 nm to 740 nm. Detection : Modulated light digitally controlled to minimize background detection. Temperature compensation included for light source and detector Storage Capacity : Up to 2 gigabytes of non-volatile flash memory Modes : single point measurement, measurement averaging for 2- 30 samples, averaging with 2 sigma outlier removal, or median determination. Sample interface : fiberoptic probe 4mm in diameter User Interface : 240 x 320 pixel Color Touch Screen Output : USB 1.1 Temperature Range : 0-50 Deg C Power Source : 2 Rechargeable AA batteries Auto Off Interval : ( no key press or download) programable from 0 to 20 minutes. Size : 12cm x 9cm x 3 cm Weigh : 0.6 lbs 275g Measuring time : 5 seconds