Measured Parameters:

Optical absorbance in two different wavebands: 653 nm (Chlorophyll) & 931 nm (Near Infra-Red).

Measurement Area:

9.52 mm (3/8") diameter circle (0.71 mm2)

Resolution:

.1 CCI unit

Repeatability:

+/- 1%

Source:

Custom 2 wavelength LED module.

Detector:

Silicon photodiode with integral amplifier for absorbance measurement, power monitoring, and temperature compensation.

Storage Capacity:

8 Mbyte of memory for up to 160,000 data measurements, or 94,000 with added GPS data entries.

Data Modes: (3)

Single point, user selectable from 1-30 point averaging, and a statistical 10-30 point protocol that asks to replace data points beyond a 2 sigma standard deviation.

User Interface

128 x 32 pixel graphic display, beep signals, keys for: setup, measurement protocols, diagnostics, data control and user input of alphanumeric comment lines.

I/O:

USB 1.1 & RS-232; multi-point file output, single point out on demand, NMEA 0183 compliant for GPS data input.

Temperature Range:

0-50 Degrees C.

Temperature Drift:

Temperature compensated source and detector circuitry for minimum drift over full range.

Power Source:

9V Alkaline battery.

Auto Off Interval:

4 minutes (no key press or data download).

Size:

152(L) x 82(W) x 25(D) mm

Weight with battery:

162 g