Shenzhen PM-9000 Express Manual del operador descargar pdf (Pagina 241)

•

ZERO CAL This option allows you to zero the CO2 module, so as to

eliminate the adverse affect of the baseline drift in the

process of measurement. Perform zeroing prior to

concentration calibration.

•

CONFIRM CAL This option allows you to confirm the calibration of the CO2

module.

Calibration Procedure

Verify the module enters the ready-to-measure status.

Connect a gas bottle with the CO2 sensor connector on the monitor as shown below.

Figure 17-6 Connections for Calibration

Monitor

Gas bottle

T-shape connector opening

to the atmosphere

Decompression

valve

Tube

Fill the gas bottle with a standard gas of certain CO2 content (3%, 4%, 5%, 6% and 7%),

and input the gas to the monitor.

Open the CO2 USER MAINTAIN menu, and set the CO2 field to a value, which is the

same with the CO2 content of the gas bottle.

When the CO2 USER MAINTAIN menu displays the currently measured CO2 content,

wait until a stable reading is indicated, and then select the CONFIRM CAL option to

start calibrating the CO2 module.

If the calibration succeeds, “CALIBRATE SUCCESS!” will be displayed in the CO2

USER MAINTAIN menu. If fails, “CAL FAIL, TRY AGAIN!” will be displayed, and

re-calibration is required.

Select the EXIT option to exit the CO2 USER MAINTAIN menu.

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Shenzhen PM-9000 Express Manual del operador Pagina 241