Teledyne 306WA - Analog trace oxygen analyzer User Manual

Page 19

4-3

Trace Oxyg

race Oxyg

race Oxygen Anal

en Anal

en Analyz

yzer

Operations 4.0

TELEDYNE ELECTRONIC TECHNOLOGIES

Analytical Instruments

Sufficient electrolyte is provided for initial servicing of the cell. Elec-

trolyte for future service should be ordered from Teledyne. When ordering,
specify type and quantity.

4.2.3

Cell Installation

Prior to servicing and installing the cell, inspect the lead electrode in

the acrylic base for signs of oxidation, indicated by a reddish-brown or
yellow discoloration. If discoloration is noted, clean the cell as directed in
section 5.5.2 before placing it in service.

WARNING:

Type A electrolyte is caustic. Use extreme care in
handling. Protective equipment including but not
limited to gloves and safety glasses should be worn
while handling electrolyte. Refer to the Material Safety
Data Sheet in the Appendix regarding potential hazards
and corrective action in case of accident.

1) Remove the four cell mounting bolts which secure the plastic

cover. Pour out the distilled water.

2) Pour about half the furnished electrolyte into the cell and slosh

until all components within the cell are wetted by the solution.
Drain and dispose of the solution.

3) Wipe the top of the cell and the O-ring with a clean, disposable

tissue to remove solution from the exterior. DO NOT

DO NOT

DO NOT touch the

interior of the cell.

4) Carefully pour in electrolyte until it just touches the bottom edge

of the silver screen assembly at all points. This is indicated by a
definite wicking of electrolyte onto the screen assembly at every
point along ithe bottom edge. It is essential at this point that the
bottom edge of the screen assembly be wetted at all points (as
seen by the wicking action), but not over-immersed (as large a
surface area as possible of the screen assembly must remain
above the electrolyte, while every point of the bottom edge must
be wetted).

NOTE: The electrolyte level in the cell is critically related to its sensitivity

due to the change in the cathode surface area exposed to the
eledctrolyte.

5) Carefully place the cell under the cell mounting plate with the

outer terminal toward the front. Secure in place with four bolts
supplied with the cell. Refer to Figure 7.

6) Connect the red lead to the center terminal and the black lead to

the outer terminal.