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2.2 FX-300 Transmitter Navigation and Operation
Each module has a 3 digit display and LEDs to indicate operating modes. The module is programmed
by the use of 3 keys located on the front panel.
‘Mode’ key is used for navigation. The ‘Mode’ key is used to toggle between operating
modes and for selecting a mode.
“ppm/mV” indicates the run mode.
°C mode displays the temperature.
“Offset” is the mode for the 1-point offset calibration
“Slope” is the mode to modify sensor slope.
“Setup” mode provides access to program the analyzer.
“Com” LED is illuminates when the Modbus (if included) is active.
For viewing or changing setup / operating parameters use the Mode key to select SETUP and
use the ‘Up’ and ‘Down’ keys to scroll through the parameters. Select a parameter by pressing the
Mode key.
To make a change you must first unlock the software by selecting parameter P01, then use the ‘Up’ or
‘Down’ keys to toggle the lock to “off”.
NOTE: The raw uncompensated (a.k.a. “absolute”) mV potential of the ISE sensor is displayed by
pressing the “Down” key in the main ppm display mode. The display now changes from ppm to
absolute mV units. Negative values will be displayed flashing. The temperature can be calibrated
pushing the “Up” or “Down” buttons when in the temperature display (°C) mode.
2 Introduction
