7.17
* whichever is the larger
† TÜV validated range
Note: Normal sign of cross-interference is shown above, but effects can be positive or negative
(same magnitude).
Table 7.18A: 4900D performance specification, Gfx
Gases measured Gfx 1210 SO
2
standard
sensitivity
Gfx 1210 SO
2
high
sensitivity
Gfx 1210 CO
standard
sensitivity
Gfx 1210 CO
high
sensitivity
Range 0-200 vpm †
0-2500 vpm
0-100 vpm
0-1000 vpm
0-200 vpm
0-3000 vpm
0-50 vpm
0-500 vpm
Min.rec.o/p range 0-200 vpm 0-100 vpm 0-200 vpm 0-50 vpm
Intrinsic error 1% of reading
or 5 vpm*
1% of reading
or 2 vpm*
1% of reading
or 2 vpm*
1% of reading
or 0.5 vpm*
Linearity error 1% of reading
or 5 vpm*
1% of reading
or 2 vpm*
1% of reading
or 2 vpm*
1% of reading
or 0.5 vpm*
Repeatability 1% of reading
or 5 vpm*
1% of reading
or 2 vpm*
1% of reading
or 2 vpm*
1% of reading
or 0.5 vpm*
Response (T90) <30sec at 1500ml/min
Zero drift / week 10 vpm 4 vpm 4 vpm 1 vpm
Span drift / week 2% of reading
or 10 vpm*
2% of reading
or 4 vpm*
2% of reading
or 4 vpm*
2% of reading
or 1 vpm*
Output fluctuation
(peak to peak)
1% of reading
or 5 vpm*
1% of reading
or 2 vpm*
1% of reading
or 2 vpm*
1% of reading
or 0.5 vpm*
Ambient pressure
coefficient
0.75% 0.65% 0.25% 0.25%
Of reading per 1% change in analyser vent pressure
Ambient temp. coeff./
10°C change
3% of reading
or 15 vpm *
3% of reading
or 5 vpm *
3% of reading
or 4 vpm *
3% of reading
or 1 vpm *
Sample flow effect
range 0.5 to 1.5l/min
<1% of reading
or 5 vpm SO
2
*
<1% of reading
or 2 vpm SO
2
*
<1% of reading
or 2 vpm CO*
<1% of reading
or 0.5 vpm CO*
Table 7.19A: 4900D measurement cross sensitivity information
O
2
Gfx 1210
SO
2
‘Std’
Gfx 1210
SO
2
‘High’
Gfx 1210
CO ‘Std’
Gfx 1210
CO ‘High’
20% CO
2
~ 0.06% 20% CO
2
~ 5 vpm
0.5% H
2
O~-15 vpm
20% CO
2
~ 2 vpm
0.5% H
2
O ~ 15 vpm
20% CO
2
~ 2 vpm
2% H
2
O ~ 0.5 vpm
20% CO
2
~ 1 vpm
2% H
2
O ~ 0.5 vpm
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