note that the sensors must be protected from exposure to high concentration solvent
vapors for storage or installation and use in the instrument.
Cross Sensitivity:
Cross sensitivity of the oxygen sensor:
There is no cross sensitivity for toxic gas or oxygen sensors under the threshold limit
value (TLV).
However, high concentration (such as over 1%) and strong oxidizing gas
(such as ozone and chlorine) will affect the oxygen equivalent, but most of the othe
common gases will not be affected.
DF-8500 cross-sensitivity list for the hydrogen sulfide sensor:
DF-8500 cross-sensitivity list for the carbon monoxide sensor:
Precautions for using DF-8500 ETO, VCM and methanol sensor:
1) Must use polytetrafluoroethylene (Teflon)tube for calibration, and the tube is short
as
much as possible to prevent adsorbing the gas.
Gas Concentration values Reading
Acetylene 100 88
Ethylene 100 97
Hydrogen 100 <28
Nitric oxide 48.6 14
Nitrogen dioxide 19.5 <0.5
Chlorine 13.7 <0.5
Ethanol 200
0
Hydrogen sulfide 50
0
Sulfur dioxide 20
0
Ammonia 20
0
Gas Concentration values Reading
Carbon monoxide 100 <2
Sulfur dioxide
2
0
Nitrogen dioxide
3
0
Nitric oxide 25
0
Chlorine 0.5
0
Ethylene 100
0
Carbon dioxide 5000
0
Ammonia 50
0
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