RKI Instruments GX-2001 Data Logging with Calibration Station - Manual (Page 9)

Overview of the GX-2001 Data Logging Software • 9
Overview of the GX-2001
Data Logging Software
The Model GX-2001 is a gas monitoring device for combustible
gases, O
2
, CO, and H
2
S. It measures combustible gases as a
percentage of the lower explosive limit (% LEL), O
2
as a straight
percentage (%), and H
2
S and CO as parts per million (ppm).
The Model GX-2001 also records STEL and TWA readings for
H
2
S and CO.
STEL is an acronym for short-term exposure limit, and it shows
the average reading for H
2
S and CO during the last 15 minutes.
TWA is an acronym for time-weighted average, and it shows the
average reading for H
2
S and CO during the last eight (8) hours.
This, and other information (e.g., calibration history), is recorded
by the Model GX-2001 and is stored in the unit’s on-board
memory. The GX-2001 Charger/Downloading Station and
Software downloads this information to your computer for
viewing, printing, and saving.
Types of Information Provided
The GX-2001 Data Logging Software provides information
about gas concentrations, alarm trends, calibration history, and
instrument data. This section of the manual has sample data
screens along with a “road map” of the GX-2001 Data Logging
Software to help you become better acquainted with how the
software works.