PCA
Instruction 24-9351
4-12
Operation
4.9 Draft Screens
The first Draft Screen is displayed by
repeatedly pressing the
MENU
key
from the Combustion Test Screen.
To measure draft, first zero the
analyzer’s pressure sensor to atmo-
spheric pressure by disconnecting the
draft hose from the bottom of the
instrument, and then pressing the
key. Reconnect the draft hose after
the second Draft Screen appears
(shown for 3 seconds). The third
screen shows the current values of
draft and stack temperature as
measured by the analyzer.
When using the analyzer to make a
differential pressure measurement
(Section 4.4), the differential pressure
value will be displayed on the third
Draft Screen.
To save (
S
) or print (
P
) the screen
data, first use the
st
keys to move
the cursor (
z
) in front of the desired
function, and then press the
key.
Front Panel Key Functions:
– Move cursor (
z
) up
– Move cursor (
z
) down
– Save or Print screen data
– Go to Combustion Test Screen
– Go to Memory Directory Screen
DRAFT
DISCONNECT DRAFT
HOSE
PRESS ±
DRAFT
RECONNECT DRAFT
HOSE
DRAFT
DRAFT
–
0.25 XX
HOT SPOT 190 °C
P
«
S
Where: xx = Unit of measure.
Default is millibars (MB). See
Optional Draft SETUP Screen
(Section 4.14) for other choices.
Содержание Portable Combustion Analyzer 24-9351
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