Emerson Rosemount X-Stream Series, Инструкция по эксплуатации

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Emerson Process Management GmbH & Co. OHG
3-16
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
3.4 Trace Moisture Measurement
3.4.1 Special Operating Conditions
The sensor is completely calibrated with all
calibration data stored in its flash memory and
does not require recalibration:
• If the sensor is included into a calibration
procedure, it might end up with a wrong
calibration and unusable sensor. Therefore
the analyzer's trace moisture measurement
channel is configured to be excluded from
autocalibration procedures, by default cali
-
brating all channels. This exclusion is done
by factory setup and cannot be changed.
•
For proper measurement results we re-
commend to exchange the sensor regularly
after 12 months of operation.
How does dew point measurement connect
with trace moisture measurement?
The lower the dew point of a gas, the less is
the content of moisture within that gas.
dp / °C Water / ppm
-100 0.025
-98 0.038
-96 0.057
-94 0.084
-92 0.123
-90 0.179
-88 0.258
-86 0.368
-84 0.520
-82 0.729
-80 1.01
-78 1.40
-76 1.91
-74 2.59
-72 3.49
-70 4.68
-68 6.22
-66 8.22
-64 10.8
-62 14.1
-60 18.3
-58 23.5
-56 30.2
-54 38.5
-52 48.9
-50 61.8
-48 77.6
-46 97.1
dp / °C Water / ppm
-44 121
-42 150
-40 185
-38 228
-36 279
-34 340
-32 413
-30 501
-28 604
-26 726
-24 870
-22 1039
-20 1237
-18 1468
-16 1737
-14 2048
-12 2409
-10 2826
-8 3306
-6 3856
-4 4487
-2 5208
0 6030
2 6964
4 8025
6 9226
8 10 583
10 12 113
Tab. 3-6:
Dew Points and Water Content (at 1013 hPa)