Specifications

Operation
4.9 Draft Screens
(For PCA Models 15, 25, 35, 45, 55 & 65)
PCA
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
ENTER 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 appear 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 ENTER
key.
Front Panel Key Functions:
– Move cursor ( z ) up
– Move cursor ( z ) down
–
Save or Print screen data
DRAFT
DISCONNECT DRAFT
HOSE
PRESS ENTER
DRAFT
RECONNECT DRAFT
HOSE
DRAFT
DRAFT – 0.25 XX
HOT SPOT 190 °C P
« S
Where: xx = Unit of measure.
Default is inches of water
column (WC). See Optional
Draft SETUP Screen (Section
4.14) for other choices.
–
Go to Combustion Test Screen
– Go to Memory Directory Screen
4-12 Instruction 0024-9219