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Series 32 Wafer-Style Dio-Seal Isolator Installation
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The wafer-style isolator is designed to fit inside
the bolts of the mating pipe flanges. Flange gaskets
are not used, since the Sensor Ring contains integrally
molded face sealing beads. The sealing beads protrudes
from the face of the isolator body before installation
(as shown in the Dimension Table). Upon installation,
the sealing bead is captured between the isolator body
and the mating flange bottoming out on the face of the
isolator body. This sealing mechanism yields a leak-proof
flange seal and ensures that factory calibration will
accurately represent field data.
The annular volume between isolator body and Sensor Ring
and the instrument's internal volume are filled with a
Sensor Fluid, providing the hydraulic link to transfer the
process pressure signal to the instrument. The Sensor Fluid
must be compatible with the Sensor Ring material and the
process fluid.
Working pressure is nominally the flange pressure rating at
the flange operating temperature. The isolator can be operated
up to the maximum allowable temperature rating of the Sensor
Ring material. For verification of maximum allowable temperature
ratings, consult Factory.
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