| Calibration Gas Mix |
4Gas: 25ppm H2S, 100ppm CO, 2.5% CH4 (UL = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 50ppm CO, 2.5% CH4 (UL = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 2.2% CH4 (ATEX = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 2.2% CH4 (ATEX = 50% LEL), 20.9% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 2.5% CH4 (UL = 50% LEL), 18% O2 in N2 balance or
4Gas: 25ppm H2S, 200ppm CO, 2.2% CH4 (ATEX = 50% LEL), 18% O2 in N2 balance or
4Gas: 25ppm H2S, 100ppm CO, 2.2% CH4 (ATEX = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 1.5% CH4, 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 0.55% Pentane (ATEX = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 0.85% Propane (ATEX/UL = 50% LEL), 18% O2 in N2 balance or
4Gas: 15ppm H2S, 100ppm CO, 0.7% Butane (ATEX = 50% LEL), 18% O2 in N2 balance
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