RKI Instruments GX-82A User Manual
Page 8
Model GX-82A Instruction Manual
062796
RKI Instruments, Inc.
5
analysis programs.
Buzzers and Earphone
An electronic buzzer is mounted at the back of the case, behind a felt
screen. The buzzer sounds for gas alarms and system malfunctions.
A 2.5 mm phone jack at the bottom left rear corner of the case
connects to an earphone, for use in high noise environments, and the
battery charger.
Carrying Case
The carrying case has openings for the diffusion grill, buzzer,
earphone/charger jack, control panel, and Data Logger interface port.
The carrying case includes a belt loop and shoulder straps.
Sensors
The sensors are mounted at the rear of the instrument, in a removable
block. A slotted metal cover protects the sensors, but allows
atmosphere to diffuse inward.
Combustible Gas Sensor
The LEL sensor detects combustible gas and vapors in the atmosphere
with a catalytic platinum element. The reaction of gas with oxygen on
the catalyst causes a change in the resistance of the element, which is
converted by the GX-82A into a reading of gas concentration.