E Instruments E4500, Руководство по эксплуатации и техническому обслуживанию

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To perform complete flue gas analysis, follow the instructions below.
13.1.1 Switching on the instrument and auto-calibration
Press the On/Off key to switch on the instrument - an introductory screen will appear. After a couple of moments
the instrument will zero itself and will state that the sample probe should not be inserted in the stack.
In case the instrument is equipped with the electrovalve for automatic auto-zeroing, it will ask for the insertion of
the gas probe in the stack. On the other hand if the instrument has not the electrovalve, it will require not to insert
the gas probe in the stack.
In the latter it is important that the sample probe is not inside the stack since, during auto-calibration, the
instrument draws fresh air from the environment and detects the zero value of the O
2
, CO and NO sensors, the
details of which are then memorized and used for reference during the analysis. It is equally important that this
phase is performed in a fresh-air environment.
The pressure sensor is also zeroed during auto-calibration.
13.1.2 Inserting the probe inside the stack
SOME IMPORTANT WARNINGS TO CONSIDER DURING THE COMBUSTION ANALYSIS
ARE LISTED BELOW:
FOR A CORRECT ANALYSIS NO AIR MUST FLOW INTO THE PIPE FROM OUTSIDE DUE
TO A BAD TIGHTENING OF THE POSITIONING CONE OR A LEAK IN THE PIPELINE.
THE GAS PIPE MUST BE CHECKED IN ORDER TO AVOID ANY LEAKAGES OR OBSTRUCTIONS ALONG
THE PATH.
THE CONNECTORS OF THE GAS SAMPLING PROBE AND OF THE CONDENSATE FILTER MUST BE
WELL CONNECTED TO THE INSTRUMENT.
KEEP THE CONDENSATE TRAP IN THE VERTICAL POSITION DURING THE ANALYSIS; A WRONG
POSITIONING MAY CAUSE CONDENSATE INFILTRATIONS IN THE INSTRUMENT AND THUS DAMAGE
THE SENSORS.
DO NOT PERFORM ANY MEASUREMENT WHEN THE FILTER IS REMOVED OR DIRTY IN ORDER TO
AVOID ANY RISK OF IRREVERSIBLE DAMAGES ON SENSORS.
13.0 FLUE GAS ANALYSIS
13.1 FLUE GAS ANALYSIS