Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 42)

EC150 CO
2
/H
2
O Open-Path Gas Analyzer
8.7 Troubleshooting
8.7.1 Data Loss During Precipitation Events
In extremely humid environments or after a precipitation event, data loss can
occur. Wicks on the analyzer windows help mitigate some of these data loss
events but cannot control for all conditions. In addition to wicking, heaters in
the snouts can aid in the prevention of data loss during precipitation and
condensation events. The heaters are automatically controlled by the EC100
electronics. The automatic heater control is activated using the Device
Configuration or ECMon software. A value of −1 turns the automatic heater
control off and a value of −2 turns it on.
8.7.2 EC100 Diagnostics for Gas Analyzer Troubleshooting
Before troubleshooting and servicing the analyzer, become familiar with
Section 2, Cautionary Statements.
The EC100 is also programmed to recognize problems with an associated gas
analyzer and reports those with LED status lights and diagnostic flags. The
two types of warnings are described in the sections that follow.
8.7.3 LED Status Lights
The EC100 has three LED status lights located in the upper left corner of the
front panel which provide immediate visual feedback and warn the user of
potential problems with the measurements. During normal operation all
STATUS LEDs should be green as shown in FIGURE 8-3.
FIGURE 8-3. LED status during normal operation
• POWER Status LED
The POWER status LED will turn red if the supply voltage is outside the
specified limits (see Section 5.4, Power Requirements). The user should
check the battery voltage or the power supply voltage and ensure that the
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