7.16
* whichever is the larger
Table 7.16: 4900D performance specification, oxygen and IR
Gases measured Pm1111E O
2
Basic
Pm1158 O
2
Control
1520 CO
2
1522 CO
Range 0-25% 0-25% see Table 7.17
Min.rec.o/p range 0-5% 0-5% 80% of selected range
Intrinsic error <0.15% <0.05% 1% of selected range
Linearity error <0.1% <0.05% 1% of selected range
inherently linear, dependant on calibration
gases
Repeatability <0.1% <0.05% of reading
or 0.01%*
1% of selected range
Response (T90) at
1500ml/min
<15 sec <15 sec <30 sec
Zero drift / week 0.1% O
2
0.05% O
2
2% of selected range
Span drift 0.1% O
2
/
week
0.05% O
2
/
week
1% of selected range/ day
Output fluctuation
(peak to peak)
<0.1% O
2
<0.01% O
2
0.5% of selected range or 1% of
reading*
Ambient pressure
coefficient
directly proportional to analyser vent
pressure
0.2% of reading per mbar
Ambient temp. coeff./
10°C change
2% of reading
or 0.5% O
2
1% of reading
or 0.1% O
2
*
1% of selected range +/- <2.0% of
reading
Sample flow effect
over full flow range
<2% of reading
or 0.2% O
2
*
<2% of reading
or 0.1% O
2
*
1.5% of selected range
or <3% of reading*
Table 7.17: 152X measurement ranges in 4900D
Gases measured Full scale measurement range %
0.25 0.5 1.0 2.5 5 10 25 50 100
1520 CO
2
1522 CO