7.11
* whichever is the larger
Table 7.10: 4200D performance specification, Gfx
Gases measured Gfx 1210 CO
Trace
Gfx 1210 CO
2
Trace
Gfx 1210 N
2
O
Trace
Gfx 1210 CH
4
Trace
Range (higher are
available)
0-50 vpm 0-10 vpm 0-50 vpm 0-50 vpm
Min.rec.o/p range 0-10 vpm 0-5 vpm 0-10 vpm 0-10 vpm
Intrinsic error 1% of reading
or 0.5 vpm*
1% of reading
or 0.1 vpm*
1% of reading
or 0.5 vpm*
1% of reading
or 0.5 vpm*
Linearity error 1% of reading
or 0.5 vpm*
1% of reading
or 0.1 vpm*
1% of reading
or 0.5 vpm*
1% of reading
or 0.5 vpm*
Repeatability 1% of reading
or 0.5 vpm*
1% of reading
or 0.1 vpm*
1% of reading
or 0.5 vpm*
1% of reading
or 0.5 vpm*
Response (T90) <20sec at 2000ml/min
Zero drift / week 1vpm 0.2vpm 1vpm 1vpm
Span drift / week 2% of reading
or 1 vpm*
2% of reading
or 0.2 vpm*
2% of reading
or 1 vpm*
2% of reading
or 1 vpm*
Output fluctuation
(peak to peak)
1% of reading
or 0.5 vpm*
1% of reading
or 0.1 vpm*
1% of reading
or 0.5 vpm*
1% of reading
or 0.5 vpm*
Ambient pressure
coefficient
0.25% 0.4% 0.5% 1%
Of reading per 1% change in analyser vent pressure
Ambient temp. coeff./
10°C change
3% of reading
or 1 vpm CO *
3% of reading
or 0.25 vpm CO
2
*
3% of reading
or 1 vpm N
2
O *
3% of reading
or 1.5 vpm CH
4
*
Inlet sample pressure
effect from 2 to 8psig
<0.5 vpm CO <0.25 vpm CO
2
<1 vpm N
2
O for <1.5% dof reading
or 0.5 vpm CH
4
*
Sample flow effect
range 1.5 to 2.5l/min
<1% of reading
or 0.25 vpm CO*
<1% of reading
or 0.25 vpm
CO
2
*
<1% of reading
or 0.5 vpm N
2
O*
<1.5% of reading
or 0.5 vpm CH
4
*
Table 7.11: Gfx trace measurement cross sensitivity information
Gfx 1210 CO Gfx 1210 CO
2
Gfx 1210 N
2
O Gfx 1210 CH
4
2% H
2
O ~ 0.5 vpm no effects in target
applications
500vpm CO
2
~ 0.5 vpm
10vpm CO ~ 0.5 vpm
2% H
2
O ~ 0.5 vpm
1% CO
2
~ 0.5 vpm
0.2% CO ~ 0.5 vpm
0.5% H
2
O < 1 vpm