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Instruction Manual MM850481 ed.01
On the “Measure” field, the instrument will display the current temperature value measured using the connected
thermocouple. The error message “Tc open” will be displayed if the thermocouple is not connected or broken. Positioning
the thermocouple on the flow pipe.
Use the [S] and [T] to move the cursor symbol to “T. Flow” field.
Press [COPY] to copy the current temperature as T. Flow value.
Press [ENTER] to manually change the temperature value
Positioning the thermocouple on the return pipe.
Use the [S] and [T] to move the cursor symbol to “T. Return” field.
Press [COPY] to copy the current temperature as T. Return value.
Press [ENTER] to manually change the temperature value
The instrument will show the difference between the two values.
Press [ESCAPE] (F1) to return to the previous page. The temperature values will be printed on the ticket report.
7.7 Gas speed measurement
The EGA4, is arranged for chimney speed measuring. For this measurement you need a Pitot tube to be connected to
the differential pressure inputs.
Connect the “+” terminal of the tube to “P1” connector and the “-“ terminal the “P2” the instrument connector.
Press [MENU] to display the following page:
MENU
MEASURE
RECALL MEMORY
FLOW/RETURN TEMP
GAS VEL.
ESCAPE
–
Use the [S] and [T] keys to move the cursor symbol to “Gas Vel.” Option. Press the [ENTER] key.
G
as
V
e
l
.
Temp. : 40.0 °C
Tg : 0.0 °C
DP : --.- mmH2O
Vel. : --.- m/s
ESCAPE
–
COP
y
Insert the gas probe in the chimney. Set the probe tip to the center of the pathway. The display will show the current
gas temperature. An error message “Tc open” will be displayed if the thermocouple is not connected or broken.
Use the [S] and [T] keys to move the cursor symbol to “Tg” parameter.
Press [COPY] to copy the current temperature as Tgas value
• Press [ENTER] to manually change the gas temperature value
Extract the gas probe from the chimney. Insert the Pitot tube inside the chimney. Be care that the probe is parallel to
chimney axis and facing burner.
• Use the [S] and [T] keys to move the cursor symbol to “∆P” parameter.
• Press [COPY] to copy the current ∆P value.
• Press [ENTER] to manually change the ∆P value.
The instrument will display the gas speed.
Press [ESCAPE] to the previous page menu.
NOTE: F
OR THE BEST SPEED CALCULATION
,
DO NOT CHANGE THE BURNER RATE BETWEEN THE TWO MEASUREMENTS
. T
HE
O
PTIMUM CONDITIONS WILL BE ACHIEVED USING
2
HOTELS IN CHIMNEY AND THE SIMULTANEOUS MEASUREMENTS
25