Gas Measurement Instruments Gascoseeker 2-500, Руководство пользователя, Страница: 17 / 89

5
GASCOSEEKER 2-500 USER HANDBOOK
RANGES OF OPERATION
% LEL Range
On the % LEL range, the instrument shows the flammable
gas concentration up to 100% LEL which for METHANE
(NATURAL GAS) represents 5% Volume Methane in Air.
The instrument calibration is shown on the instrument label
i.e. METHANE
%
SAMPLE
100 80
60
40 20 0
LEL Range Display
% Gas Range
On the % Gas range, the instruments are calibrated for
use in METHANE and will give inaccurate results if used
in other mixtures. In addition the instruments are calibrated
for METHANE (NATURAL GAS) in Air mixtures and should
only be used for such mixtures unless specially calibrated.
The instrument calibration is shown on the instrument label
i.e. METHANE
On the % GAS range the instrument range is displayed in
the top right hand corner of the L.C.D. as GAS.