1
PART I. OPERATION
1.
THE GAS-EXPLORER DETECTORS
This manual describes the operation of the family of Gas-Explorer detectors for natural gas, carbon
monoxide and oxygen:
Detects natural gas and displays it as PPM, % LEL or % GAS
Detects natural gas and displays it as PPM and % GAS
Detects natural gas and carbon monoxide and displays it as PPM,
% LEL(301) or % GAS(311), and PPM CO (parts per million of CO)
Detects natural gas and oxygen and displays PPM, % LEL or % GAS, and
% Oxygen
Detects natural gas and oxygen and displays PPM or % GAS and
% Oxygen
Detects natural gas, CO, and oxygen and displays PPM, or % LEL(411) or
% GAS(412), PPM CO and % Oxygen
Detects natural gas, CO, and oxygen and displays PPM or % LEL(611) or
% GAS(612), PPM CO, PPM H2S and % Oxygen
All models display gas in ppm in the Track Gas mode.
All models may be used to test ambient air and bar hole to locate natural gas leaking from
pipes and other conduits. All models which detect carbon monoxide (CO) may be used to test for
CO in ambient air, flue gas, and gases given off by appliances.
A detector alerts the user acoustically and visually, by “flashing” the symbol(s), for
detected gas(es), whose concentration exceeds preset limits. Visual alarms are displayed in-
between readings. For example, the display will flash
“CO”,
approximately every two seconds,
in-between normal Monitor mode displays. If the concentration of natural gas also rises above its
alarm limit, the display will flash
“GAS”,
then a normal Monitor mode display, then
“CO”
, and so
on. Simultaneously, the sound alarm will be on.
Visual alarm symbols are
“GAS”
for natural gas,
“CO”
for carbon monoxide,
“HS”
for
H
2
S,
“Low Oxygen”
for low oxygen, and
“High Oxygen”
for high oxygen.
Factory set alarm limits are 1.0% methane, 35 ppm CO, 9ppm H
2
S and 19.5% for
low and 23.0% for high oxygen.
No alarms are given in the Bar Hole mode. The low battery warning is given in all modes.
OPTIONS
All units may have (optionally) Blue Tooth (Option BT) and/or GPS (Option GPS). The former
may be used for transmitting stored calibrations, while the latter assigns coordinates to all
measurements (gas readings) obtained by an instrument. GPS coordinates are automatically stored
together with corresponding readings of all sensors on-board.
Model EGI -201 -
Model EGI -211 -
Model EGC-301
and -311
-
Model EGO-321 -
Model EGO-322 -
Model EGA-411
and -412
-
Model EGA-611
and -612
-
-
WARNING: Each detector responds to the gases for which it was designed. Other toxic
or dangerous gases may not be detected.
Summary of Contents for GAS-EXPLORER II EGI-201
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