Bacharach Portable Combustion Analyzer Spécifications télécharger pdf (Page 64)

100

PCA



3 Manual

64 0024-9472 Rev 3

Bacharach also offers a convenient exchange program that allows the customer

to regularly send in old sensors and, as scheduled, receive calibrated

replacements. Contact Bacharach customer service for more details about the

exchange program.

6.4. Pressure Sensor Calibration

This procedure calibrates the pressure sensor to a known pressure value.

6.4.1. Material Required

•

Bellows

•

Manometer:

Range: ±8 in. of water column (±20 mb)

Accuracy: ±0.01 in. of water column (±0.025 mb)

6.4.2. Procedure

NOTE: The unit of measure for pressure is selected in the Pressure

Units Selection section on page 26

. In the following procedure, inwc

is selected, but note that any unit of measure can be used for

calibration purposes.

1. Assemble the pressure sensor calibration equipment as shown in

Figure 6-3, but DO NOT connect the analyzer to the calibration

equipment at this time.

2. If not already done, turn ON the analyzer and display the

CALIBRATION LIST screen (refer to Calibration on page 62).

3. Use the ▲▼ buttons to highlight Pressure, and then press ENT to

display the CALIBRATE PRESSURE screen.

NOTE: “Measured” is the pressure value currently being

detected by the pressure sensor, while “Applied” is a

known value of pressure that will be applied for calibration

purposes.

4. With both the –∆P and +∆P ports open to the atmosphere, observe that

the current Measured pressure reading should be 0 ±0.01  inwc. If

necessary, zero the pressure sensor (refer to Performing a Draft /

Pressure Measurement on page 47) and repeat Steps 2 thru 4.

5. Connect the hose from the manometer to the +∆P port and apply a

negative pressure to this port by adjusting the bellows for a manometer

reading of –4.00.

6. Use the ▲▼ and ◄► buttons to enter an applied value that exactly

equals the manometer reading.

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Bacharach Portable Combustion Analyzer Spécifications Page 64

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