Cosa-xentaur Xentaur XPDM Manuel d'utilisateur télécharger pdf (Page 23)

page 20

Appendix D: Uncertainty in LBS and PPMV calculations

Uncertainty of LBS-H2O calculation due to +/-3˚C measurment accuracy

Calculated LBS-H2O in Natural Gas @ STP

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

Measured Dewpoint ˚C

Dewpoint -3˚C

Dewpoint +3˚C

Uncertainty of ppmV calculation due to +/-3˚C measurment accuracy

Calculated ppmV

-80

-75

-70

-65

-60

-55

-50

-45

-40

-35

-30

-25

-20

0.5

0.6

0.7

0.8

0.9

100

200

300

400

500

600

700

800

900

1000

Measured Dewpoint ˚C

Dewpoint -3˚C

Dewpoint +3˚C

1 2 ... 18 19 20 21 22 23 24

XPDM Manual Table of Contents 3
1. Introduction 4
2. Precautions 5
3. Principle of Operation 6
4. Operating the XPDM 8
5.0 The User Interface 10
6. Options 14
O=output current in mA 15
7. Automatic Calibration 17
Legend: 20
4/20 mA output 22
0.56 LBS = -60˚C = 10.66 ppmV 22
1.97 LBS = -50˚C = 38.83 ppmV 22
289.1 LBS = 0˚C = 6063.8 ppmV 22
Measured Dewpoint ˚C 23
Lithium battery 24

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Cosa-xentaur Xentaur XPDM Manuel d'utilisateur Page 23

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