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3-17
Instruction Manual
HASAxE-IM-HS
05/2006
Emerson Process Management GmbH & Co. OHG
3 Principles
3-4 Measurement Specification
Performance Specifications
Table 3-7: Measurement Performance Specifications
1
Related to full scale
2
Related to measuring value;
1 psi = 68.95 hPa
3
From gas analyzer inlet at 1.0 l/min gas
flow (electr. = 2 s)
4
Constant pressure and temperature
5
Dependent on integrated photometer bench
6
Paramagnetical oxygen measurement (pO
2
)
NDIR/UV/VIS Oxygen Sensor (pO
2
and eO
2
) Thermal Conductivity
Detection limit
<
1%
1 4
<
1%
1 4
<
2%
1 4
Linearity
<
1%
1 4
<
1%
1 4
<
1%
1 4
Zero-point drift
<
2% per week
1 4
<
2% per week
1 4
<
2% per week
1 4
Span (sensitivity) drift
<
1% per week
1 4
<
1% per week
1
<
1% per week
1 4
Repeatability
<
1%
1 4
<
1%
1 4
<
1%
1 4
Response time (t
90
) 4 s
<
t
90
<
7 s
3 5
< 5 s
3 6
/ approx. 12 s
3 9
5 s
<
t
90
<
20 s
3 7
Permissible gas flow 0.2 - 1.5 l/min. 0.2 - 1.0 l/min
6
/ 0.2 - 1.5 l/min.
9
0.2 - 1.5 l/min. (
+
0.1 l/min)
Influence of gas flow
<
0.5%
1
4
<
2%
1
4
<
1%
1 4 13
Maximum gas pressure
<
1,500 hPa abs. (
<
7 psig) Atm. pressure
6
/
<
1,500 hPa abs.
9
(
<
7 psig)
<
1,500 hPa abs. (< 7 psig)
Influence of pressure
- At constant temperature
<
0.10% per hPa
2
< 0.10 % per hPa
2
<
0.10% per hPa
2
- With pressure compensation
8
<
0.01% per hPa
2
<
0.01 % per hPa
2
<
0.01% per hPa
2
Permissible ambient temperature -20 to +50 °C (-4 to +122 °F) -20 to +50 °C (-4 to +122 °F)
10
-20 to +50 °C(-4 to +122 °F)
Influence of temperature
(at constant pressure)
- On zero point
<
1% per 10 K
1
<
1% per 10 K
1
< 1% per 10 K
1 15
- On span (sensitivity)
<
5% (0 to +50 °C)
1 11 15
<
1% per 10 K
1 15
<
1% per 10 K
1 15
Thermostat control
12 14
Optionally 60 °C (140 °F) 55/60 °C (131/140 °F)
6
/ None
9
75 °C (167 °F)
12
Warm-up time
12 14
15 to 50 minutes
5
Approx. 50 minutes
6
Approx. 15 minutes
12
Sensor / cell only
13
Flow variation within
+
0.1 l/min
14
Option "thermostated box" with temperature
60 °C (140 °F)
15
Temperature variation; 10 K in 1 h
7
Depending on measuring range
8
Pressure sensor is required
9
Electrochemical oxygen measurement (eO
2
), not for use
with sample gas containing FCHC´s
10
Electrochemical oxygen measurement (eO
2
):
+5 to +40 °C (41 to 104 °F)
11
Starting from 20°C/68 °F (to 0 °C / 32 °F and
to +50 °C / 122 °F)