Emerson X-STREAM Series

Emerson Process Management GmbH & Co. OHG 1-13
X-STREAM Non-Incendive
Instruction Manual
HASXENE-IM-EX
12/2014
1
Technical Description
1.6 Measurements Specifi cations
Special Performance Specifi cations for Gas Purity Measurements (Suppressed Ranges)
Tab. 1-7: Special Performance Specifi 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 fl ow defi 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)
Infl 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)
Infl 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
) fl ow approx. 0.1–0.2 l/min