10. Perform a control of gas flow
10.1. Perform a measurement of theoretical flow
➢
Turn on the analyser. Go to
“Procedures”
menu with the keypad then press
OK
.
The analyser asks to select a customer: go to
“OK”
then press
OK
.
The list of customers is displayed.
➢
Select the customer then press
OK
.
The list of boilers is displayed.
➢
Select the boiler then press
OK
.
“Procedure”
screen is displayed.
➢
Go to
“Gas flow”
with keypad then press
OK
.
A message indicating
“Step 1: Theoretical flow”
is displayed.
➢
Go to
“Next”
then press
OK.
“Theoretical flow”
is displayed.
➢
Specify the power capacity of the boiler in kW (data on the information plate of the boiler): go to each number, press
OK
,
press the up and down arrows to
increment
or
decrement
the number then press
OK
to validate.
➢
Make the same operation to select the standard:
NF
or
CE
.
➢
Make the same operation to select the gas type:
GAS H
,
GAS B
,
BUTANE
or
PROPANE
.
➢
Press the
“OK”
function key to validate.
A message indicating
“Step 2: Real flow”
is displayed.
The theoretical flow is calculated according to a power capacity in kW of the boiler, the standard of the boiler (CE or NF standard), the
gas type (Gas H, Gas B, butane or propane) and according to a coefficient. Table below allows to calculate this flow according to the
power capacity:
Standard
GAS H (19-21 mbar)
GAS B (25 mbar)
Butane
Propane
NF
Pu/KW x 2.166
Pu/KW x 2.519
Pu/KW x 0.651
Pu/KW x 0.843
CE
Pu/KW x 1.927
Pu/KW x 2.241
Pu/KW x 0.579
Pu/KW x 0.750
10.2. Perform a measurement of real flow
The measurement of the theoretical flow must be performed previously
A message indicating
“Step 2: Real flow”
is displayed.
➢
Go to
“Next”
then press
OK
.
“Start index (L)”
is displayed.
➢
Specify the start flow indicated on the gas meter: go to each number, press
OK
,
press the up and down arrows to
increment
or
decrement
the number then
press
OK
to validate.
➢
Press the
“OK”
function key to validate.
A message indicating “
Step 2: Wait: 2 min.”
and a progress bar are displayed.
➢
Wait for 2 minutes. It is possible to cancel this measurement: press
OK
.
➢
Go to
“Next”
then press
OK
at the end of the 2 minutes.
“End index (L)”
screen is displayed.
➢
Specify the end flow indicated on the gas meter: go to each number, press
OK
, press the up and down arrows to
increment
or
decrement
the number then press
OK
to validate.
➢
Press the
“OK”
function key to validate.
A message displays the flow measurement result.
When the measurement is finished:
➢
Press
OK
.
The analyser asks to save the measurement result then to print the measurement result.
➢
Go to
YES
or
NO
then press
OK
.
10.3. Results interpretation
The analyser displays the flow result by the following:
•
OK:
lower or equal to 10%
•
A1:
between 10.1 and 20%
•
A2:
greater than 20%
Perform a control of gas flow
27
Read a gas meter :
Totaliser in m
3
Totaliser in litres
