Broadley Technologies 14 Manual de instrucciones descargar pdf (Pagina 47)

Model 14 Oxygen Analyzer

Causes and solutions:

A) The membrane permeability has changed (coating).

➯ Calibrate the analyzer and check if the

concentration is back to normal.

B) Electrolyte contamination.

➯ Inspect probe components. Change the

electrolyte.

C) Leak of electrolyte.

➯ Inspect probe components. Change the

electrolyte.

D) Error during calibration or incorrect calibration.

➯ Calibrate again to check the parameters.

If the error is confirmed, check the calibration

current (too high, too low or unstable) and the

concentration in the air. Refer to the problems

described above.

E) The temperature calibration has not been

performed.

➯ Check the temperature given by the trans-

mitter and calibrate it (see page 6-2). If

manual compensation has been selected,

confirm the value is correct.

F) The sample temperature or pressure is out of the

specifications.

➯ Change the probe location or modify the

sample so that it meets the specifications.

Causes and solutions:

A) The probe current is zero.

➯ There is no electrolyte in the probe (leak).

There may be a short-circuit in the connection.

B) The probe current is negative.

➯ Connection problem to the anode circuit

(loose contact).

➯ Deposits on the anode.

C) The sample temperature corresponds to the speci-

fications, but there is an error on the temperature.

➯ There may be a short-circuit on the

temperature connection.

7-2

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Broadley Technologies 14 Manual de instrucciones Pagina 47