Bacharach PCA3, Operation And Maintenance Manual

Page: 20 / 104

PCA

3 Manual
20 0024-9473 Rev 3
Figure 2-5. Probe Connectors GAS, + ∆ P, and T-STACK
2.7. Differential Pressure Connector ( ∆ P)
Draft is measured by connecting the probe’s draft hose to the +
∆
P fitting, while
leaving the -∆P fitting open to the atmosphere. See Figure 2-5 on page 20.
In addition to measuring draft, the “+” and “-”
∆ P fittings can also be used to
measure the differential pressure between two areas by first connecting a hose
(P/N 0024-1103) to the -∆P fitting, and then inserting the open end of this hose
into the area being used as the reference pressure. The analyzer’s probe is then
inserted into the area where differential pressure is to be measured.
2.8. Primary Air Thermocouple Connector (T-AIR)
If thermocouple P/N 0104-1797 (10 feet long) or Utility Wand P/N 0104-1799
(12-inch ridged probe with handle and 5 foot coiled cable) is to be used to
measure the burner’s primary air temperature, then connect either of these
thermocouples to the analyzer’s T-AIR connector. Refer to Figure 3-2 on page
23.
2.9. Computer Interface (USB)
Data stored in the analyzer’s memory can be downloaded to a personal
computer by connecting USB data cable P/N 0104-4032 between the USB ports
of the computer and analyzer. The PCA
®
3’s USB port is on its right side. See
Figure 2-1 on page 16.
2.10. Wireless Printer Port (IrDA)
Data that has been stored in the analyzer’s memory can be printed on a
compatible IrDA (Infrared data associated) wireless printer by aligning their IrDA
communication ports. The IrDA port of the PCA
®
3 is located at the top of the
device. See Figure 2-1 on page 16.
2.11. Options Connector (OPT)
The options connector is used for optional external measurement features. Refer
to Figure 3-2 on page 23.