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5.3.3. Maintenance
Keit recommends regular inspection of the integrity of the welds on the front and rear in line
with local safety procedures.
Inspection of the sealing weld will require removal of the flange and spectrometer from the
pressure vessel and can be completed as part of regular inspection/maintenance of the
spectrometer and pipework.
Do not use impact (e.g. a hammer) to separate components if the gasket becomes stuck to
the flange and hub.
The lap-joint flange may be manufactured from Hastelloy or stainless steel. Care should be
exercised to ensure that it is not corroded by aggressive chemicals during maintenance or
installation.
5.4. Port tube - ASM1487
The port tube is an accessory that can be secured to the base of the probe. This is designed
for installation into pipelines for continuous analysis of your process. The port tube has two
positions to weld onto either the pipe or a flange.
It is fixed in place using a tri clamp that locates over the rear of the port tube and two semi-
circular collars that fit around the probe; the clamp does not need to be tightened with
significant force. A blanking plug is also provided to seal the end if the spectrometer is
withdrawn from the pipeline. For technical drawings, contact Keit at [email protected].
Figure 24: Spectrometer with port tube fitted
