Siemens SITRANS LR 400 User guide

Siemens Milltronics Process Instruments Inc.

1954 Technology Drive, P.O. Box 4225, Peterborough, ON Canada K9J 7B1

Tel: (705) 745-2431 Fax: (705) 741-0466 www.siemens-milltronics.com

Email: techpubs@siemens-milltronics.com

AG030612

SITRANS LR 400 and Easy Aimer LR Retrofit

Objective: The procedure for installing an Easy Aimer LR kit on a SITRANS LR 400.

Equipment: • SITRANS LR 400

• Easy Aimer LR Kit

• Adjustable wrench

• M8 socket wrench

While every effort was made to verify the following information, no warranty of accuracy or usability is expressed or implied.

Overview:

To retrofit the SITRANS LR 400 with an Easy Aimer LR, please follow the directions below:

For a standard SITRANS LR 400, follow the procedures in

Part One: SITRANS LR 400 Standard Emitter

For SITRANS LR 400 units with Zone 0 approvals, follow the procedures in

Part Two:

SITRANS LR 400: Zone O Emitter Change

page 5.

Part One: SITRANS LR 400 Standard Emitter

Step One: Remove Housing from Horn Assembly

1. Set the unit upright on a firm and clean surface.

2. Loosen locknut connecting housing and flange

assembly.

3. Carefully lift housing from flange assembly, exposing

the PTFE emitter.

4. Set housing aside on a secure surface.

APPLICATION GUIDE

locknu

emitter

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 2 of 9

APPLICATION GUIDE

Step Two: Removing the Standard Emitter

NOTE: For Zone 0 approved models, go to

Appendix: Zone 0 Emitter Change

on page 5.

1. Using an adjustable wrench open to 36mm, loosen

the PTFE emitter assembly from flange.

2. Lift the emitter assembly from the flange.

Step Three: Separating Flange from Horn

1. Turn flange over so it sits flat on the surface with the

horn pointing up

2. Remove the four bolts connecting the flange to the

horn using an M8 socket wrench, and then lift the

horn from the flange.

CAUTION:

• Be careful not to damage the PTFE emitter!

•If assembl

comes a

art, see

endi

: Troubleshootin

e 9.

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 3 of 9

APPLICATION GUIDE

Step Four: Attaching Horn to Easy Aimer LR

1. Set horn into Easy Aimer hub, lining up the screw

holes.

2. Fasten the four screws using the 5/32” ball-ended

Alan key and screws provided with kit.

Step Five: Inserting the Emitter Assembly

1. Turn horn assembly over and insert emitter assembly.

2. Thread emitter assembly back into place and tighten

using the adjustable wrench.

CAUTION: Do not over tighten!

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 4 of 9

APPLICATION GUIDE

Step Six: Replacing the Housing

1. Carefully set housing on top of horn assembly.

2. Thread collar back into place and hand tighten.

Step Seven: Changing Process Connection Tag

The process connection tag references the process connection specification drawings for the unit. By adding the Easy Aimer LR,

the unit’s process connection specifications have changed so the old tag must be replaced with the new tag included with the kit.

1. Undo setscrew holding ring in the unit and remove

the tag from the ring.

CAUTION: Be sure to discard old tag as the process

connection information is no longer relevant.

2. Slide new tag onto the ring and reattach to the unit.

NOTE: Process Connection drawings are available at

www.siemens-milltronics.com

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 5 of 9

APPLICATION GUIDE

Part Two: Zone O Emitter Change

The SITRANS LR 400 with Zone 0 approvals has a specially designed emitter. If the emitter assembly comes apart before

reattachment, see

Appendix

Troubleshooting

on page 9.

Zone 0, Step One: Remove Housing from Horn Assembly

1. Set the unit upright on a firm and clean surface.

2. Loosen locknut connecting housing and flange

assembly.

3. Carefully lift housing from flange assembly, exposing

the PTFE emitter.

4. Set housing aside on a secure surface.

Zone 0, Step Two: Removing Top Emitter Assembly

1. Using an adjustable wrench open to 36mm, loosen

the top PTFE emitter assembly from flange.

2. Lift the top emitter assembly out of the flange and set

aside for use in

Zone 0, Step Six

NOTE: If assembly comes apart, see

Appendix:

Troubleshooting

on page 9.

locknu

emitter

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 6 of 9

APPLICATION GUIDE

Zone 0, Step Three: Removing Horn

1. Carefully remove Ring # 1 from flange assembly and

set aside.

2. Flip flange assembly, and then undo the four bolts

connecting horn and flange using an M8 socket

wrench.

Zone 0, Step Four: Removing Bottom PTFE Emitter

1. Gently remove horn from

bottom emitter.

2. Turn flange on its side and push the bottom emitter out the flange top.

Remove flange and set aside.

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 7 of 9

APPLICATION GUIDE

Zone 0, Step Five: Attaching Horn to Easy Aimer LR

1. Set horn into Easy Aimer hub, lining up the screw

holes.

2. Fasten the four screws using the 5/32” ball-ended

Alan key and screws provided with kit.

Zone 0, Step Six: Inserting Bottom PTFE Emitter

1. Flip assembly, setting horn on

flat surface and insert bottom

PTFE emitter point first.

2. Place Ring 1 on top of unit , beveled side up, and push firmly until botom

PTFE emitter and ring are completely inserted.

NOTE: Ensure that O rings are set properly in their groves. See

Appendix:

Troubleshooting

on page 9.

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 8 of 9

APPLICATION GUIDE

Zone 0, Step Seven: Replacing Top Emitter Assembly

1. Take the top emitter assembly removed in

Appendix

Step Two

and thread into Easy Aimer.

2. Using an adjustable wrench open to 36 mm, tighten

the top emitter assembly.

Zone 0, Step Eight: Reassembly

1. Reattach the housing and replace the process connection tag. For more information, see

Steps Six

and

Step Seven

page 4.

NOTE: If assembly comes apart, see

Appendix:

Troubleshooting

on page 9.

Easy Aimer LR and SITRANS LR 400 Retrofit AG030612 9 of 9

APPLICATION GUIDE

Appendix: Troubleshooting

Standard Emitter Components and Assembly

Zone 0 Emitter Components and Assembly

NOTE: Rings 1,2, and 3 are inserted beveled side up.

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