Eclipse Combustion EGA4 - Manual (Page 23)

Instruction Manual MM850481 ed.01
CAUTION
I F A SINGLE TUBE GAS SAMPLING PROBE (TG MODEL ) IS USED FOR P RESSURE / DRAFT MEASUREMENTS , BE SURE THAT PROBE AND
HOSE ARE CLEAN AND DRY BEFORE CONNECTION TO THE PRESSURE INPUT .
Special draft probe (TGD models):
This special probe model has a double gas collector: one for the flue gas analysis and one for the draft measurement.
When you connect the probe to the analyzer you have to insert both gas inlet and pressure inlet connectors. Connect the
hose with line filter to gas inlet connector.
The pressure measurement requires the instrument in normal operating conditions indicating one of the measured or
calculated parameters. Press [DRAUGHT] on the keyboard. DO NOT INSERT THE PROBE IN THE CHIMNEY. The
internal pump will stop and the following page will be shown:
DRAUGHT
–
For draught meas.
Move probe on
DRAUGHT P1
Press [F1] to
Start measure
ESCAPE
Press [MEASURE] (F1) to show the following page:
DRAUGHT
Measure
1.0 mbar
Press [ENTER] to
Hold measure
ESCAPE
–
ZERO
Press the [ZERO] key before insert the probe in the chimney to zeroing the measured value.
Insert the probe in the chimney. Check for mechanical positioning and flue gas intercepting. Wait for measurement
stabilization.
Press [ENTER] to memory store the pressure and draft values.
Press [ESCAPE] (F1) to return to the previous page.
Now you can proceed with the Smoke index measurement and/or the gas analysis. The memory stored value will be
printed together the analysis.
7.3.1 Burner pressure measurement
Using the burner pressure probe, it is possible to measure the pressure on the burner. Connect the probe to the
instrument pressure input and connect to the burner plug. Follow the procedure described in paragraph 8.4 to read the
pressure.
7.4 Smoke measurement
To avoid condensation inside the smoke pump, it should aspirate ambient air before the gas sample. This can be
obtained aspirating the air by the fireside (not in the exhaust gas connection pipe) without using the paper filter.
Introduce now the filter in the pump. The gas sample should be drawn to the center of the combustion gas flux. The
correct gas volume is sampled with 10 uniform shoots by the pump.
Compare the darkening of the filter with the smoke index table. The smoke index found does not exceed the ones
defined by the current normative.
We suggested to use a retaining cone during gas sampling.
N
OTE : I F YOU WONT TO PRINT THE SMOKE INDEX WITH THE ANALYSIS DATA , YOU SHOULD DO THE MEASUREMENT BEFORE THE
FLUE GAS ANALYSIS .
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