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Navigator 500
Sodium analyzer
4 Setup
OI/ASO550–EN Rev. G
19
4 Setup
This section describes how to set the analyzer up for first-time
use.
If multiple wet-sections are to be connected to a transmitter, an
additional setup procedure is required – see Appendix C, page
78.
4.1 Setting-up the wet-section
4.1.1 Fitting the electrodes
Referring to Fig. 4.1:
1. Unpack sodium electrode
A
and carefully remove the
rubber teat – retain the teat for storage. Unscrew (but do
not remove) plastic sleeve
B
and slide sodium electrode
A
fully into plastic sleeve
B
.
2. Carefully tighten plastic sleeve
B
(with sodium electrode
A
in place) until electrode bulb
C
passes through
O-ring
D
.
Position the sodium electrode so that, when the plastic
sleeve is tightened against O-ring
D
, the electrode bulb
is just above the bottom of the flowcell chamber
E
.
3. Ensure O-ring
F
is fitted at the top of the sodium
electrode.
4. Connect red-sleeved sodium connector
G
to the top of
the sodium electrode and tighten.
5. Unpack reference electrode
H
and remove the rubber
teat – retain the teat for storage.
6. For systems without an optional reservoir, unplug the
black rubber filling hole plug
I
(check the reference
electrode has sufficient solution – top up if necessary).
For systems with an optional reservoir fitted, proceed to
step10, then connect the reservoir tube to the reference
electrode arm as described in Section 4.1.2, page 20.
7. Remove the supplied O-ring
J
(temporarily secured to
the top of the right-hand chamber) and fit it over the
reference electrode body.
8. Carefully position the reference electrode centrally in the
right-hand chamber
K
so that the ceramic plug
L
is
between 5 and 10 mm (0.2 to 0.4 in.) from the bottom of
the chamber.
9. Ensure O-ring
M
is fitted at the top of reference
electrode.
10. Connect black-sleeved reference electrode connector
N
to the top of reference electrode and tighten.
Caution.
Do not attempt to setup the analyzer unless the
wet-section and transmitter are fully installed and ready for
operation.
Note.
O-rings must be fitted correctly and the inside of the
electrode connectors must be dry and completely sealed
(moisture reduces the circuit impedance and affects the
wet-section performance).
Fig. 4.1 Fitting the sodium and reference electrodes
5 – 10 mm
(0.19 to 0.38 in.)