Emerson Rosemount 3408 Manuel utilisateur

Quick Start Guide

00825-0200-4418, Rev AA

October 2022

Rosemount™ 3408 Level Transmitter

Replacement of Electronic Deposit Box

1 About this guide

This guide provides instructions for replacing the Electronic Deposit Box

(EDB) on the Rosemount 3408 Level Transmitter. Refer to the Rosemount

3408 Reference Manual for more instructions.

1.1 Safety messages

WARNING

Failure to follow safe installation and servicing guidelines could result in

death or serious injury.

Ensure the transmitter is installed by qualified personnel and in accordance

with applicable code of practice.

For installations in hazardous locations, the transmitter must be installed

according to the Rosemount 3408 Product Certifications document and

System Control Drawing.

WARNING

Explosions could result in death or serious injury.

Before connecting a handheld communicator in an explosive atmosphere,

ensure the instruments are installed in accordance with intrinsically safe or

non-incendive field wiring practices.

In Explosion-proof/Flameproof and Non-Incendive/Type Ex ec installations,

do not remove the transmitter cover when power is applied to the unit.

The transmitter cover must be fully engaged to meet Explosion-proof/

Flameproof requirements.

WARNING

Electrical shock could cause death or serious injury.

Ensure the mains power to the transmitter is off and the lines to any other

external power source are disconnected or not powered while wiring the

transmitter.

WARNING

Process leaks could result in death or serious injury.

Ensure that the transmitter is handled carefully. If the process seal is

damaged, gas might escape from the tank.

Quick Start Guide October 2022

2 Emerson.com/Rosemount

WARNING

Physical access

Unauthorized personnel may potentially cause significant damage to and/or

misconfiguration of end users’ equipment. This could be intentional or

unintentional and needs to be protected against.

Physical security is an important part of any security program and

fundamental to protecting your system. Restrict physical access by

unauthorized personnel to protect end users’ assets. This is true for all

systems used within the facility.

CAUTION

Hot surfaces

The flange and process seal may be hot at high process temperatures. Allow

to cool before servicing.

1.2 Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration

and disposed of in accordance with local and national legislation or

regulations.

October 2022 Quick Start Guide

Quick Start Guide 3

2 Check the model code

Procedure

Check that the model code on the Electronic Deposit Box (EDB) is correct for

the application.

Figure 2-1: EDB Main Label

A. Model code

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4 Emerson.com/Rosemount

3 Replace the Electronic Deposit Box (EDB)

Prerequisites

Make sure that the device is not exposed to moisture or dust.

Procedure

1. Disconnect the power supply.

2. Turn the jam screw clockwise until it is completely threaded into the

housing.

H2.5 mm

3. Remove the cover.

4. Remove the LCD display (if fitted).

October 2022 Quick Start Guide

Quick Start Guide 5

5. Make note of the cable routing and disconnect the cables from the

EDB.

Use a small screwdriver to press down and hold the terminal

connection open.

6. Loosen the three screws on the EDB, and then remove the EDB.

T20

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6 Emerson.com/Rosemount

7. Gently insert the new EDB until it stops, and then firmly push it all the

way in.

8. Tighten the three screws, starting with the screw at position 1.

Torque 20 in-lb (2 N-m)

T20

October 2022 Quick Start Guide

Quick Start Guide 7

9. Connect the cable wires.

Note

When connecting a flexible (stranded) conductor, use a small

screwdriver to press down and hold the terminal connection open.

10. Snap the LCD display into place.

11. Attach and tighten the cover.

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8 Emerson.com/Rosemount

a) Verify the cover jam screw is completely threaded into the

housing.

H2.5 mm

b) Attach and tighten the cover.

Note

Make sure the cover is fully engaged. There should be no gap

between the cover and the housing.

October 2022 Quick Start Guide

Quick Start Guide 9

c) Turn the jam screw counterclockwise until it contacts the

cover.

Note

Required for explosion-proof/flameproof installations only.

H2.5 mm

d) Turn the jam screw an additional ½ turn counterclockwise to

secure the cover.

12. Connect the power supply.

Postrequisites

Re-configure the device.

Quick Start Guide October 2022

10 Emerson.com/Rosemount

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