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Appendix
Determining replacement test gas concentration using
hexane adjustment as an example:
z
Replacement test gas (specified): 1.0 % vol. propane
According to the table above, the display setpoint is 0.72 % vol.
The test gas concentration must be set to 0.72 % vol.
z
Replacement test gas (alternative): 0.85 % vol. propane
When using another replacement test gas (example: 0.85 % vol.
propane), this gas must be set proportionally to the specified
replacement test gas. The following formula is given:
(0.85 / 1.0) × 0.72 = 0.612
The hexane test gas must be set on the device to the rounded
value of 0.61 % vol.
