Bacharach 24-9448 manual Saving Test Data

Instruction 24-9448

Operation

b. Disconnect any hoses connected to the	PRESSURE ZERO
+∆P and –∆P ports, and then press ENT
to zero the pressure sensor.
c. Reconnect any hoses. When measuring	Disconnect hose then
	press ENTER
draft, simply leave the –∆P port open to
the atmosphere and connect the probe’s
draft hose to the +∆P port (see Figure 3-2
on Page 3-3).
	PRINT	ZERO	SAVE
5. Do one of the following to measure draft or	F1	F2	F3
differential pressure:	PRESSURE ZERO
• To measure draft, simply insert the probe
into the stack and observe the draft read-	Reconnect hose
ing 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 dif-	PRINT	ZERO	SAVE
ferential pressure between the two areas is	F1	F2	F3
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.

4.7 Saving Test Data

Up to 500 individual sets (“snap shots”) of combustion-test or pressure data can be saved in memory, which can later be recalled for viewing from the Memory Directory (Section 4.13.1).

1. First display the screen that contains the	RUN NATURAL GAS
	O2	4.0 %
data to be saved. In the example to the right,	CO	12 ppm
all data associated with the Combustion Test	EFF	82.6 %
RUN screen will be saved.	CO2	9.5 %
	T-STK	374 °F
2. Press the SAVE (F3) button to save the test	T-AIR	68.0 °F
	EA	21.3 %
data in the next available memory location.
	CO(3)	13 ppm
NOTE: When memory is full, the next reading	PRINT	MENU	SAVE
	F1	F2	F3
saved will overwrite the oldest reading.

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