
00825-0100-4103, Rev 02
Rosemount™ Hygienic Process
Connection Adapter
Dairy Coupling, VARIVENT®, Tri Clamp
Quick Start Guide
August 2020

1 About this guide
This guide provides instructions for installing a hygienic process
connection adapter on Rosemount 326, 327, and 1408 transmitters
with G1 process connectors. The following adapters are covered by
this guide:
Table 1-1: Hygienic Process Connection Adapters
Part number Description
FB-1001 1½-in. Tri Clamp (ISO 2852 / DIN 32676)
FB-1002 2-in. Tri Clamp (ISO 2852 / DIN 32676)
FB-1010 VARIVENT® Type F
FB-1011 VARIVENT Type N
FB-1020 DN32 Dairy Coupling (DIN 11851)
FB-1021 DN40 Dairy Coupling (DIN 11851)
FB-1022 DN50 Dairy Coupling (DIN 11851)
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1.1 Safety instructions
Follow these guidelines to ensure safe use and extend the life of the
product.
CAUTION
• Read this document before using the product and keep it during
the entire service life.
• The product must be suitable for the corresponding applications
and environmental conditions without any restrictions.
• Only use the product for its intended purpose.
• If the operating instructions or the technical data are not adhered
to, personal injury and/or damage to property might occur.
• The manufacturer assumes no liability or warranty for any
consequences caused by tampering with the product or incorrect
use by the operator.
• Installation, electrical connection, set-up, operation and
maintenance of the product must be carried out by qualified
personnel.
1.2 Hygienic adapter O-ring
The adapter comes with an EPDM O-ring. More O-rings are available
as accessories. See each product's Product Data Sheet for more
information.
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2 Install the adapter
Prerequisites
Use a new adapter when replacing a PEEK sealing ring or changing
from a PEEK seal to O-ring sealing.
Procedure
Place the O-ring in the groove of the transmitter.
1.
Note
Be careful not to scratch or damage the surfaces of the
transmitter.
2. Grease the transmitter thread with lubricating paste.
Note
The paste must be approved for the application and
compatible with the elastomers used.
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