3. diagnostic flags and suggested actions – Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer User Manual

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EC150 CO

O Open-Path Gas Analyzer

If any of the remaining 22 flags are set, the master flag (

BAD_DATA) is set as

well, so that the user can filter data based on this flag only. When this flag is

set, more detailed information about the nature of the problem can be obtained

from the 22 slave flags.

When a flag is set due to improper configuration of the analyzer, inadequate

power supply voltage or grounding, extreme environmental conditions, and

unreliable or missing connections, the user should try to correct the problem by

checking the instrument setup, verifying that all components are properly

connected and configured, and that operating conditions are within operational

specifications. Other flags are associated with the proper function of the

internal components of the analyzer. If any of these flags are set, consult with

a Campbell Scientific application engineer for assistance in diagnosing the

problem and, if necessary, arrange to send the instrument for repair.

If connected to a datalogger, the EC100 could be automatically

configured under CRBasic program control. The user should

verify the proper configuration in the datalogger program.

TABLE 8-3. Diagnostic Flags and Suggested Actions

Flag

Number

Flag Name

Comments

Bad Data

Set when any of flags 1 through 22 is

set. Discard all data with this flag is set.

If the flag persists, identify which of

flags 1 through 22 is set. When this flag

is set, the

GAS status LED on the

EC100 electronics panel is illuminated

red.

General Fault

Reserved for future use.

Startup

Set during the initial power up of the

analyzer. It stays set only until all

control loops have settled. The infrared

detector temperature and the motor

speed usually stabilize in 1 to 2 minutes.

If the flag persists, verify that the

operating conditions (temperature,

pressure, supply voltage and current) are

within specified limits and that all

connections with the gas head and

peripheral sensors are made properly.
When this flag is set the

GAS status

LED turns orange.
WARNING: Power off the EC100

electronics before disconnecting the gas

analyzer.

NOTE