EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
28
7.2.12 EC100 Barometer
This setting determines which pressure sensor will be used to measure the
barometric pressure. The EC100 always includes the EC100 basic barometer,
but it may be ordered with the optional EC100 enhanced barometer. This
setting is factory defaulted to the enhanced barometer if ordered and to the
basic barometer otherwise.
There are two other possible values for this setting. First, the user may provide
a barometric pressure sensor. In this case, the setting should be changed to
User Supplied
, with the appropriate values for gain and offset entered (see
below). The final option is to select
None
. The EC100 will use a fixed (see
below) value for pressure. This mode is intended for troubleshooting only.
7.2.12.1 Pressure Gain
If the
Pressure Sensor
is set to
User Supplied
, this setting gives the gain
factor (kPa/V) used to convert measured voltage to pressure. Normally the
Pressure Sensor
is set to
EC100 Basic
or
EC100 Enhanced
, and this setting
is not used.
7.2.12.2 Pressure Offset
If the
Pressure Sensor
is set to
User Supplied
, this setting gives the offset
(kPa) used to convert measured voltage to pressure. Normally the
Pressure
Sensor
is set to
EC100 Basic
or
EC100 Enhanced
, and this setting is not
used.
7.2.12.3 Fixed Pressure Value
If the
EC100 Barometer
setting is
None
, the EC155 will use the value of this
setting for the barometric pressure. This mode is intended for troubleshooting
only. In normal operation this setting is not used.
7.2.13 EC155 Sample Cell Pressure Sensor
This setting should be set to
Absolute
if a newer EC155 sample cell (serial
number 2000 or greater) is used. For older EC155 sample cells (serial numbers
less than 2000), set this to
Differential
.
7.2.14 Differential Pressure
This setting should be set to
Auto-Select
, regardless of the version of sample
cell being used. Disabling this setting will result in the ambient pressure
measured by the EC100 barometric pressure sensor being used as the sample
cell pressure. Because this setting should not be altered for the vast majority of
applications, it is not shown in
ECMon
but it can be accessed using
Device
Configuration Utility
.
7.3
ECMon
Settings for the EC155 are easily verified and/or changed by using the
Windows PC support software
ECMon
(short for Eddy Covariance Monitor),
which is found at
. The settings associated
with the newer version of the sample cell (EC155 sample cell serial numbers
2000 and greater) and the sonic transducer shadow correction require that
version 1.6 or newer of
ECMon
be used.
Содержание EC155
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Страница 82: ...Appendix E Safety Data Sheets SDS E 5 E 2 Magnesium Perchlorate ...
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Страница 89: ...Appendix E Safety Data Sheets SDS E 12 E 3 Decarbite ...
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Страница 92: ...Appendix E Safety Data Sheets SDS E 15 ...
Страница 93: ...F 1 Appendix F EC155 Packing Information ...
