EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
33
elements in each output array, and FIGURE
feed in terminal mode.
TABLE 8-1. USB and RS-485 Output Elements
Data
Element
Description
Units/comments
1
Ux
m/s
2
Uy
m/s
3
Uz
m/s
4
Sonic temperature
°C
5
Sonic diagnostic flag
6
CO
2
density
µmol/mol
7
H
2
O density
mmol/mol
8
Gas diagnostic flag
9
Sample-cell temperature
°C
10
Sample-cell pressure
kPa
11
CO
2
signal strength
Nominally 0.0 to 1.0
12
H
2
O signal strength
Nominally 0.0 to 1.0
13
Pressure differential
1/
(used for
EC155 only, disregard for
IRGASON/EC150)
kPa
14
Source housing temperature
(only applicable for EC150 and
IRGASON, the EC155 does not
have a thermistor in the detector
housing)
°C
15
Detector housing temperature
°C
16
Counter
Arbitrary
17
Signature
Arbitrary in
hexadecimal
1/
The newer design EC155 sample cell (serial numbers 2000 and greater) uses an absolute pressure
sensor to measure sample cell pressure, but the pressure differential relative to ambient pressure is
reported. This provides consistency with the older design outputs and is useful in monitoring
potential flow constrictions in the intake.
FIGURE 8-1. An example of USB data output in terminal mode
Summary of Contents for EC155
Page 78: ...E 1 Appendix E Safety Data Sheets SDS E 1 Molecular Sieve Type 13X ...
Page 79: ...Appendix E Safety Data Sheets SDS E 2 ...
Page 80: ...Appendix E Safety Data Sheets SDS E 3 ...
Page 81: ...Appendix E Safety Data Sheets SDS E 4 ...
Page 82: ...Appendix E Safety Data Sheets SDS E 5 E 2 Magnesium Perchlorate ...
Page 83: ...Appendix E Safety Data Sheets SDS E 6 ...
Page 84: ...Appendix E Safety Data Sheets SDS E 7 ...
Page 85: ...Appendix E Safety Data Sheets SDS E 8 ...
Page 86: ...Appendix E Safety Data Sheets SDS E 9 ...
Page 87: ...Appendix E Safety Data Sheets SDS E 10 ...
Page 88: ...Appendix E Safety Data Sheets SDS E 11 ...
Page 89: ...Appendix E Safety Data Sheets SDS E 12 E 3 Decarbite ...
Page 90: ...Appendix E Safety Data Sheets SDS E 13 ...
Page 91: ...Appendix E Safety Data Sheets SDS E 14 ...
Page 92: ...Appendix E Safety Data Sheets SDS E 15 ...
