Emerson Rosemount 326 User manual

Quick Start Guide
00825-0100-4104, Rev 02
August 2020
Rosemount™ Hygienic Process
Connection Adapter
Weld-in Adapter

1 About this guide
This guide provides instructions for installing the Rosemount 326,
327, and 1408 transmitters with G1 process connectors using a
weld-in adapter (part number FB-1041).
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.
2

2 Install the weld-in adapter
Use the weld-in adapter to install transmitters with G1 process
connections to containers or pipes.
Prerequisites
After welding, allow the adapter to cool before installing. Do not weld
the adapter to the container or pipe with the transmitter connected.
Procedure
1. Bore a hole that has the outside diameter of the adapter in the
pipe or container wall.
Maximum oversize: 0.008 in (0.2 mm)
2. Weld the adapter.
Note
While welding, prevent the adapter from warping.
a) Turn the marking (1) (marking may vary) to the
position shown below for the display of the screwed
transmitter.
3

b) Fix the adapter in several spots with a sufficient
adhesive force.
Apply the fixing points at equal distances opposite
each other.
c) Apply the welding seams between the fixing points
opposite each other.
Ensure sufficient and even distance between the
individual sections to avoid glowing through or
warping of the adapter caused by overheating.
3. Allow the adapter to cool.
4. If used, remove the welding mandrel.
5. Remove deposits from the thread.
4

3 Mount the transmitter
Follow these steps to mount the transmitter to a container or pipe
using the weld-in adapter.
Procedure
1. Remove the transmitter from the protective packaging.
2. If needed, clean the sealing areas.
3. Place the O-ring in the groove of the transmitter.
Note
Be careful not to scratch or damage the surfaces of the
transmitter.
326P
1408
326L
327T
4. Grease the transmitter thread with lubricating paste.
Note
The paste must be approved for the application and
compatible with the elastomers used.
5

5. Tighten the transmitter to the recommended torque.
Note
Over tightening the transmitter can impair the seal. If the
sealing areas are damaged, replace the O-ring or the entire
process connector.
34 mm / 39 mm
Torque 310 in-lb (35 N-m)
6

4 Product certifications
4.1 3-A® certification
This product is authorized to display the 3-A symbol. Ensure gaskets
and process connection accessories selected for installation meet
both the application and 3-A requirements. A certificate of
compliance is available at Emerson.com/Rosemount.
4.2 Other industry certifications
All connector surfaces and materials which come into contact with
process medium comply with the following regulations:
•(EC) No. 1935/2004
•(EC) No. 2023/2006
•CFR Title 21 (FDA) § 177.2600
•CFR Title 21 (FDA) § 177. 2415
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*00825-0100-4104*
Quick Start Guide
00825-0100-4104, Rev. 02
August 2020
Emerson Automation Solutions
6021 Innovation Blvd.
Shakopee, MN 55379, USA
[phone] or [phone]
[phone]
[email protected]
North America Regional Office
Emerson Automation Solutions
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Chanhassen, MN 55317, USA
[phone] or [phone]
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