Teledyne 306WA - Analog trace oxygen analyzer User Manual

Page 28

TELEDYNE ELECTRONIC TECHNOLOGIES

Analytical Instruments

5-4

5.0 Maintenance &

5.0 Maintenance & T

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Model 306W

Model 306WA

Quick Disconnect Fitting Method

NOTE:

NOTE: Only stainless steel tubing must be connected to the quick discon-

Only stainless steel tubing must be connected to the quick discon-

Only stainless steel tubing must be connected to the quick discon-
nect fitting.

nect fitting.

The steps are as follows:

- Connect 1/4" tubing with the male quick disconnect fitting to the

Model 306 sample inlet.

- Turn on the sample gas.

- Adjust the flow control inside the analyzer until the ball is inside the

target (on the flow tube).

- Purge the analyzer for 12 to 16 hours when the instrument is being

installed for the first time or when replacing the cell.

- Remove the quick disconnect from sample inlet and connect it to the

span inlet.

- Slowly adjust the span gas regulator until span gas flow is about the

same as the sample flow.

- Wait until the reading is stabilized. Adjust span pot so that the

analyzer is reading the same O

concentration as indicated on the

span gas bottle.

- Now the analyzer is calibrated.

-Remove the quick disconnect from span inlet and connect it to the

sample inlet and the instrument is ready to go online.

5.5 Cell

The electrochemical reaction in the analytical process results in the

accumulation of lead ions in the electrolyte, making the replacement of the
lead electrode or the electrolyte necessary.

5.5.1 Electrolyte Replacement

Teledyne recommends that the electrolyte be replaced when foreign

material is accumulated in the cell or when the cell sensitivity is noticeable
decreased. This is typically identified when a large change is made to the
span pot setting during calibration. Remove the cell from is compartment,
and drain, clean, rinse, and refill as described in section 4.2.3

4.2.3

4.2.3. After the

cell is serviced or replaced, calibrate the analyzer as outlined in Section
4.7.1: Calibration Using the Internal Calibrator

4.7.1: Calibration Using the Internal Calibrator

4.7.1: Calibration Using the Internal Calibrator.