Specifications

PCA

• To measure draft, simply insert the probe into the

stack and observe the draft reading on the PRESSURE

screen.

• To measure differential

pressure, connect two sampling

hoses to the +∆P and –∆P ports,

and place the open end of each

hose into the areas being

measured. The differential

pressure between the two areas

is now displayed on the

PRESSURE screen. If the

pressure at the +∆P port is

higher than the –∆P port, then the pressure reading

will be positive. If it is lower, then the reading will be

negative.

4.8 Saving Test Data

Up to 500 individual sets (“snap shots”) of combustion-test, pressure, or

temperature data can be saved in memory, which can later be recalled for

viewing from the Memory Directory (Section 4.14).

1. First display the screen that contains

the data to be saved. In the example

to the right, all data associated with

the Combustion Test RUN screen

will be saved.

2. Press the SAVE (F3) button to save

the test data in the next available

memory location.

NOTE: When memory is full, the next

reading will not be saved until space

is made available by clearing the

data. (See 4.14.3: Clearing Memory)

POWER

T-STACK T-AIR

GAS

— ∆P (Pressure

Reference Port)

+∆P (Pressure

Measurement Port)

Figure 4-2. Draft/Pressure Measurement Hose Connections