Henkel 2250048 REV, Operating Manual

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8
4.2 Air Probe
Supplier
The immersion air probe, is to be supplied by the customer or installation
contractor.
Diameter and Length
The immersion probe shall be at a minimum 1” NPT pipe and be of sufficient
length to extend 6” below the minimum liquid level test point.
Material
The probes should be the same material as the treatment tanks.
Mounting
The air probes may enter from the top or side of the process tank. If
entering from the side the top of the probe should be 6” below that
minimum desired liquid level of the process tank. Installation should ensure
that the probes remain firmly in place and be removable for cleaning if
needed. Ensure that no overhead interferences are present so the probes
may be fully removed vertically.
If the process tank accumulates sludge, the tip of the immersion probe must
be at least 2” above the maximum expected sludge level.
Tubing Runs and Fittings
Tubing (¼ “) is to be run by the installer from each controller to the
respective level control immersion air probe. The tubing shall not be longer
than 15 feet and must not have more than (4) four 90-degree bends. Each
probe must be equipped with a ¼” compression tube fitting for attaching
the tube from the level controller. Tubing is typically copper or
polyethylene. The fittings should be brass or polypropylene when used in
corrosive atmospheres.