Emerson Rosemount Analytical X-STREAM Enhanced Series - Tab. 1-7: Special Performance Specifications for Gas Purity Measurements

Emerson Process Management GmbH & Co. OHG1-18
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
05/2017
1.6 Measurement Specications
Special Performance Specications for Gas Purity Measurements (Suppressed Ranges)
Tab. 1-7: Special Performance Specications for Gas Purity Measurements (Suppressed Ranges)
1
Related to suppressed range (98–100 %)
2
Constant pressure and temperature
3
Daily zero and span calibration requested
4
Switching from absolute to suppressed range
requires purge time of > 240 s
5
Sample gas pressure sensor mandatory
6
Temperature variation: ≤ 10 K per hour
7
Related to permissible ambient temp. range
Note! 1 psi = 68.95 hPa
98–100 % CO
2
Detection limit (4 σ)
1 2
≤ 2 %
Linearity
1 2
≤ 1 %
Zero-point drift
1 2 3
≤ 2 % per day
Span (sensitivity) drift
1 2 3
≤ 2 % per day
Repeatability
1 2
≤ 2 %
Response time (t
90
)
4
≤ 30 s
Permissible gas ow dened by constant pressure at inlet
Permissible gas pressure 1300 hPa (4.4 psig) – 1700 hPa (10.1 psig)
Permissible gas pressure variation
±
70 hPa (1 psig)
Inuence of ambient pressure change
from 800 to 1100 hPa at constant tem-
perature with pressure compensation
1 5
≤ 2 %
Permissible ambient temperature +15 to +35 °C (59 to 95 °F)
Inuence of temperature
1 6
(at constant pressure)
– On zero point ≤ 0.5 % per 10 K
– On span (sensitivity)
7
≤ 2 %
Thermostat control 60 °C (140 °F)
Warm-up time approx. 50 minutes
Purge gas (N
2
) ow approx. 0.1–0.2 l/min
All performance data are veried during the manufacturing process for each unit by the following
tests:
• Linearization and sensitivity test
• Long term drift stability test
• Climate chamber test
• Cross interference test (if applicable)