Bacharach PCA 2 24-9448 - Manual (Page 41)

Instruction 24-9448 4-7
Operation
4.6 Making a Draft / Pressure Measurement
The dfference n pressure (∆P) between two areas can be measured by
usng the analyzer’s two pressure ports and the PRESSURE screen. By
usng the –∆P port as the reference, the pressure appled to the +∆P port
wll be dsplayed on the PRESSURE screen as the dfferental pressure
between the two ports.
Perform a draft / pressure measurement as follows:
1. Turn ON the analyzer and allow t to complete
ts warm-up cycle (Secton 4.2).
TIP: The pressure units of measure is selected
per Section 3.7.
2. Dsplay the MAIN MENU by pressng the
MENU (F2) button. If necessary, press ESC
untl MENU appears above F2.
3. Use the buttons to hghlght PRESSURE,
and then press ENT to dsplay the PRES-
SURE screen.
4. Before takng a measurement, the pressure
sensor may need to be re-zeroed f t s not
already dsplayng zero wth both pressure
ports open to the atmosphere. If necessary,
zero the pressure sensor as follows:
a. Press the ZERO (F2) button.
PRESSURE
Measured:
0.00 inwc
PRINT ZERO SAVE
F1 F2 F3
MAIN MENU
FUEL
PRESSURE
MEMORY
SETUP
CALIBRATION
DIAGNOSTICS
STATUS
F1 F2 F3
MENU
POWER
P
T-STACK T-AIR
GAS
— ∆P (Pressure
Reference Port) +∆P (Pressure
Measurement Port)
Sampling Hoses with quick
connect fittings are available
as an optional accessory.
Refer to Section 8.2.
Figure 4-1. Draft / Pressure Measurement Hose Connections