RKI Instruments GX-82A - Manual (Page 7)

Model GX-82A Instruction Manual
4 Hayward, California (510) 441-5656
2. AIR/▲
The AIR/▲ switch activates the GX-82A’s Demand Zero function,
which automatically adjusts the instrument in fresh-air conditions.
It is also used to scroll through the display and settings modes.
3. (SHIFT)/▼
The (SHIFT)/▼ switch scrolls through the display and settings
modes, and enters instructions into the GX-82A’s microprocessor.
4. DISPLAY/(ADJ)
The DISPLAY/(ADJ) switch activates the display modes, and
enters instructions into the GX-82A’s microprocessor.
5. Alarm LEDs
Three red light-emitting diodes (LEDs) provide visual alarms for
gas concentrations and malfunctions.
Battery Compartment
The GX-82A uses two “C” size cells; alkaline batteries will run the
GX-82A for approximately 10 hours, rechargeable nickel-cadmium
batteries will run for approximately 7 hours. (Rechargeable batteries
can be recharged in the GX-82A with the optional battery charger.)
The GX-82A battery compartment is located on the back of the
instrument. The battery cover has a strap to prevent accidental
opening.
Interface Port
The GX-82A’s built-in data logger records gas concentrations at
programmed intervals. These measurements can be downloaded
through the interface port to a PC-compatible computer for use in data