Enclosure

The housing is cast from low-copper aluminum alloy and silicone rubber sealant is used in all joints.The overall construction meets the dusttight and weatherproof rating of IP65 as defined by IEC 60529, and provides the environmental and corrosion resistant protection rating of NEMA 4X.

Enclosure Finish

High-build epoxy paint.

Electrical Connections

The housing has three 3/4 NPT tapped holes. Two for power conduit fittings and one for signal conduit fitting. See “OPTIONAL SELECTIONS AND ACCESSORIES” section for cable glands offered for nonconduit applications, or a signal cable seal for conduit applications.

End Connection

ANSI Class 150 and 300 raised face flanges, and Metric PN 10, PN 16, PN 25, and PN 40 raised face flanges, as specified. Refer to Figure 1 and Figure 2 for process pressure and temperature limits with each flange type and line size.

Mounting Position

The flowtube can be mounted in any orientation provided it remains full of process liquid and the electrodes are in a horizontal plane.

Data Plate

Stainless steel data plate fastened to instruments with drive screws. Includes space for customer tag data up to a maximum of 60 characters and spaces.
For additional space, see Optional Customer Tag.

Metering Tube

300 Series stainless steel with PTFE or polyurethane lining, as specified.

Electrode Materials

316L ss for both PTFE and polyurethane. Other electrodes available for flowtubes with PTFE lining are Hastelloy C, tantalum-tungsten, titanium, or platinum-10% iridium.

Flat Head and Conical Head Electrodes

Standard flat head electrodes are offered with all electrode materials. The conical head electrode is offered when fluids can cause coatings to deposit on the electrode surface, possibly degrading measurement accuracy. Conical head electrodes are available in 316L ss or Hastelloy C materials for 25 through 300 mm (1 through 12 in) flowtube sizes.
The conical head extends out through deposits into a higher velocity area of the flow profile where process liquid tends to sweep the electrodes clean.
See Figure 2 for flat and conical head electrode configurations.