Campbell Scientific EC155 CO2 and H2O Closed-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 27)

EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
f. Wire power and ground (i.e., power reference) cable CABLEPCBL-L (pn
21969-L) to the EC100. Feed the cable through one of the cable port
openings in the bottom of the EC100 enclosure and attach the ends into the
green EC100 power connector (pn 3768). Plug the connector into the
female power connector on the EC100 panel. Ensure that the power and
ground ends are going to the appropriate terminals labeled 12V and
ground, respectively.
g. Connect the power cable to a power source. The power and ground ends
may be wired to the 12V and G ports, respectively, of a Campbell
Scientific datalogger or to another 12 Vdc source.
h. Once power is applied to the EC100, three LED status lights on the EC100
panel will illuminate. The power LED will be green and the sonic and gas
LEDs will be red until the unit has warmed up and is ready to make
measurements at which time the LEDs will be green. If after several
minutes the LED lights do not turn green, a diagnostic flag has been
detected. Check the individual diagnostic bits to determine the specific
fault. Diagnostics may be monitored using the Status window of ECMon,
the user interface software included with the EC155 (see Section 7,
Settings), or with a datalogger (see Section 10, Datalogger Programming
with CRBasic). The diagnostics may reveal that the unit needs to be
serviced (e.g., clean the optical windows of the sample cell, clear the
CSAT3A transducers of ice or debris, etc.).
7. Settings
Operation of the EC155 can be customized by changing the values of the
settings. Factory defaults will work well for most applications, but the user
may adjust the settings with a PC using either the ECMon software (see
Section 7.3, ECMon) or the Device Configuration Utility (see Section 7.4,
Device Configuration Utility), or with a datalogger using the
EC100Configure() instruction (see Section 10.2, EC100Configure()
Instruction).
7.1 Factory Defaults
TABLE 7-1 shows the default value for each of the settings.
TABLE 7-1. Factory Default Settings
SDM Address 1
Bandwidth 20 Hz
Unprompted Output Disabled
RS-485 Baud Rate 115200 bps
Unprompted Output Rate 10 Hz
Analog Output Disabled
ECMon Update Rate 10 Hz
Temperature Sensor Auto-Detect (EC155 Sample Cell
Thermocouple)
Pressure Sensor EC100 Basic or EC100 Enhanced (depending
on order)
Pressure Differential Enable Auto-Detect (Enabled for EC155)
Heater Control Disabled
17