5
2.3
Assembling the Probe – Fig. 2.2
Caution. Take care to avoid damage to the probe when fitting the sheath assembly.
Wadding
Filter Washer
Vent
Holes
Secure countersunk-head screws (x3)
in fixing flange using the lock nuts (x3).
Position the clamp ring over the boss
on the probe head…
Position the sealing ring over the boss,
ensuring it is located correctly in
the centre taper.
Slide the fixing flange over the sheath,
ensuring it is seated over the
locating step.
Drill the fixing flange to
suit fixing requirements
Secure the sheath
to the boss (x3)
…ensuring the wadding at the probe
end is not damaged and the filter washer
is in position at the end of the sheath
…ensuring correct
orientation of the
ring's center taper
Locate the clamp ring over the
3 screws on the fixing flange
and secure using nuts (x3).
Tighten the nuts down equally so that the fixing flange is pulled down tightly against the locating step on the sheath
and the sealing ring is compressed until the adjacent faces of the clamp ring and sheath are 1 to 1.5mm apart.
Use a 1mm drill or shim to set the gap.
Probe Head
1 to 1.5 mm
Carefully insert the probe into the
ceramic sheath…
1
2
3
4
5
6
7
8
9
5
3
8
2
2
PREPARATION
✶
Note. To reduce its diameter the wadding
may be compressed slightly.
To increase its diameter, apply slight end
pressure on the wire bonding at both ends of the
wadding. Mould the wadding by hand to ensure
a light push fit into the sheath.
Fig. 2.2 Assembling the Probe
