RKI Instruments GX-2001 Manual - Manual (Page 12)

7 • Description Model GX-2001 Operator’s Manual
Sensor Cover
The sensor cover is white and protects the scrubber filters and sensors
from dust and water. It fits over all the sensor diffusion ports and is secured
in place by the sensor cover retainer. If the sensor cover becomes dirty, the
accuracy of the GX-2001 will be affected. Replace the sensor cover if it
appears dirty.
LCD
The LCD is visible through the GX-2001’s front panel. Target gas
concentrations, the time, battery condition, and alarm indications are
displayed on the LCD. When any of the control buttons are pressed, the
LCD backlight comes on for 20 seconds.
Control Buttons
Below the LCD are the glow in the dark control buttons. These buttons are
MODE/POWER, DISP, and AIR. They turn on the power to the Model GX-
2001, and turn it off. They control what is displayed on the LCD, including
battery level, time, date, and year, gas concentrations, peak, TWA, and
STEL readings, as well as other messages. They also allow you to perform
a Demand Zero, change alarm points, change the date and time, and
calibrate the instrument. The functions performed by the control buttons
are summarized in the following table:
Table 2: The Control Buttons of the Model GX-2001
Button Function
MODE/POWER
• Turns the unit on and off.
• Turns the LCD back light on.
• Displays peak readings (low minimum and high
maximum readings for O
2
).
• Resets the alarm circuit (gas alarms).
• Enters Calibration Mode with the AIR button.
• Enters Alarm Adjustment Mode with the AIR
button.
• Enters Time Adjustment Mode with the DISP
button.