2 – Specification MultiExact Gas Analyser
2.5 Calibration gas
The calibration gases must be clean, non-
corrosive, free from oil and
condensates and compatible with the materials listed in Appendix A6.
For optimum calibration results, the calibration
gas flow rate/pressure should
be the same as the flow rate/pressure of the gases to be sampled.
O
2
purity transducer calibration gases
High calibration setpoint
2
(100% O
2
N
4
[99.99] recommended)
2
(0% zero grade nitrogen recommended)
Low calibration tolerance level *
Calibration gas <
5% O
2
0.5% O
2
High calibration tolerance level *
Calibration gas <
5% O
2
0.5% O
2
O
2
control transducer calibration gases
High calibration setpoint
2
(0% zero grade nitrogen recommended)
Low calibration tolerance level *
Calibration gas <
5% O
2
≥
0.5% O
2
High calibration tolerance level *
Calibration gas <
5% O
2
0.5% O
2
8 05410001A / Revision 6