A8.3
Maximum sample 28kPag (4 psig) relative to atmosphere
pressure:
Cell flow rate: 250ml (air)/minute maximum. 150ml/min for cell types 313 and
364 and model 1132 Transducer unit.
200ml/min for cell type 312.
Dew point:
1131 and 1133 5 deg C (9 deg F) below lowest ambient temperature.
transducers:
1132 transducer: Less than 105 deg C (221 deg F).
Temperature:
1131 and 1133 50 deg C (122 deg F) maximum,
transducers: ! 10 deg C (14 deg F) minimum at analyser inlet.
1132 transducer: 105 deg C (221 deg F) maximum,
! 10 deg C (14 deg F) minimum at analyser inlet.
4. Performance Characteristics
Resolution of display: +/! 0.01% oxygen
Resolution of analogue output: +/! 0.01% oxygen +/! 0.3% of span (+/! 0.5% of span with
software 0110066X).
Drift (constant conditions) Zero <0.02% O
2
/week
Span (100% O
2
)<0.02% O
2
/day, <0.05% O
2
/week
Repeatability 1100A 0.02% O
2
1100H 0.03% O
2
Effect of ambient temperature A change of 10 deg C (18 deg F) in the range ! 10 to
changes: +50 deg C (14 to 122 deg F) will cause the zero to change by
+/! 0.01% max and the span to change by +/! 0.1% of reading
(0.2% with model 1132 and 1133 transducer.)
Effect of change in cell A change of cell flow rate from 0-200ml/min (0-150ml/min for
flow rate : type 313 and 364 cells) will cause the reading to change by
0.1% (maximum).
Effect of barometric pressure The analyser measures the partial pressure of oxygen in the
or sample vent pressure: sample gas. Therefore the reading (at constant oxygen content)
is proportional to the ratio of the cell pressure at the time of
analysis to that at the time of calibration unless the pressure
compensation option is fitted and calibrated.
Pressure compensation reduces the effect due to sample
pressure changes by a factor of better than 200 or
+/! 0.02% O
2
whichever is the greater.
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