MultiExact Gas Analyser Appendix
A9.8 Performance data: 0-50ppm CH
4
measurement
The display indication given below is the default indication. You can configure
the analyser to provide other display indications (see Section 5.10).
Performance data has been determined in accordance with EN61207.
For either nitrogen or helium background gas, transducer to be c
alibrated
using the chosen background gas.
User selectable
(minimum difference – 10% of full range)
Intrinsic error (accuracy)
< 0.5 ppm or 1.5% of reading **
†
< 0.5 ppm or 1.5% of reading **
‡
± 3% of measurement or 1 ppm per 10 °C
T
90
at 500 ml min
.
For a 200 to 500 ml min
-1
change in sample gas flow rate.
For a 14 to 55 kPa (0.14 to 0.55 bar, 2 to 8 psi) change in sample gas inlet pressure.
#
For a 1% change in pressure.
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