Owner's Manual

OPERATION AND MEASUREMENT
Apogee Instruments model MC-100 chlorophyll concentration meters consist of two light emitting diodes with
paired detectors located in the sampling head, liquid crystal display (LCD), operation buttons, 9 V alkaline battery,
and signal processing circuitry mounted in a plastic housing. The meter also includes a USB port for data download
to a computer and RS-232 port for use with GPS.
PLEASE NOTE: MC-100 units serial numbers 1521 and above come with an internal GPS. The RS-232 port is still
present in GPS enabled units, but does not function as a GPS expansion port anymore.
The operational buttons consist of three menu selection keys and four arrow keys to make adjustments to menu
functions.
Press the power button to turn on the MC-100. After a few seconds the main menu screen appears. Program flow
is organized into three menu groups. The selectable options are Run – used to set up and take measurements,
Data – allows access and downloading of data files, and System – used to set up functional features of the meter
and view system diagnostics.