Emerson Rosemount 520 Quick Start Guide

Quick Start Guide

00825-0100-4520, Rev BA

Rosemount™ 520 Level Transmitter

January 2021

Quick Start Guide

January 2021

NOTICE

This guide provides basic guidelines for Rosemount 520 Level Transmitters. It does not provide instructions
for configuration, diagnostics, maintenance, service, troubleshooting, or Intrinsically safe installations. Refer
to the Rosemount 520 Reference Manual for more information.This manual is also available electronically on

Emerson.com/Rosemount

Explosions could result in death or serious injury.

Installation of this transmitter in hazardous areas must be in accordance with the appropriate local, national,
and international standards, codes, and practices. Review approvals section of the Rosemount 520 Reference
Manual for any restrictions associated with a safe installation.

Before connecting a HART®-based communicator in an explosive atmosphere, make sure the instruments in
the loop are installed in accordance with intrinsically safe or non-incentive field wiring practices.

Electrical shock can result in death or serious injury.

Avoid contract with the leads and the terminals. High voltage that may be present on leads can cause
electrical shock.

.

Contents

System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Mount the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Connect wiring and power up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Verify transmitter configuration (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Trim the transmitter (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Product certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2

January 2021

Quick Start Guide

1.0 System readiness

1.1 HART Communication

The Rosemount 520 utilizes the HART Communications Protocol. The most
notable advantage of employing HART Communications is that digital
information can be transmitted over legacy 4–20mA analog instrumentation
wiring. In addition to providing device diagnostics and process alerts, the ability
to communicate to the device remotely simplifies basic configuration,
calibration, and maintenance. A task-oriented, user optimized interface
eliminates errors and speeds routine maintenance tasks.

For the Rosemount 520, HART Protocol facilities two basic operation
configurations.

Point-to-point

In this configuration, digital signals are superimposed on the 4–20 mA loop
current. One process variable is sent on the 4–20 mA signal and other secondary
or calculated process variables can be transmitted digitally over the 4–20 mA
signal.

Multidrop

Multidrop refers to the connection of several transmitters to a single
communication transmission line. Communication between the host and the
transmitters occurs digitally with the analog output of the transmitters
deactivated. With HART Revision 7, up to 63 transmitters can be connected on a
single twisted pair of wires. Multidrop installation requires consideration of the
update rate necessary from each transmitter, the combination of transmitter
models, and the length of the transmission line.

For more information, reference “Connect wiring and power up” on page 13.

1.2 Configuration tools

There are several tools that can be used to configure the Rosemount 520.

The Field Communicator is a portable, handheld device used to configure field
devices or perform diagnostics for effective troubleshooting in the field without
having to use a laptop. The Field Communicator supports all HART devices and is
available in an intrinsically safe version.

™

HART modems allow AMS
devices using a PC serial port, PC USB port, or Bluetooth® connectivity. Serial and
USB HART modems attach directly to a PC or laptop computer and do not require
an external power supply. Bluetooth HART modems require a self-contained
power source (AAA batteries) as well as a Bluetooth-ready workstation PC.

HART modems also allow the AMS Instrument inspector to communicate with
HART devices using a PC USB or serial port. The AMS Instrument inspector is a
PC-based application that performs configuration and maintenance functions for
the Rosemount 520 Transmitter. AMS Instrument Inspector is only fully
compatible with MACTek VIATOR USB Modem.

Trex communicator to communicate with HART

3

Quick Start Guide

The Rosemount 520 is not shipped with the AMS Instrument Inspector; the AMS
Instrument Inspector can be downloaded free of charge at

Emerson.com/ams-instrument-inspector

.

1.3 Confirm HART Revision capability

If using HART-based control or asset management systems, confirm the HART
capability of those systems prior to transmitter installation. Not all systems are
capable of communicating with HART Revision 7 Protocol.

1.4 Confirm correct device driver

Verify the latest device driver (DD/DTM™) is loaded on your system to ensure
proper communication.

Download the latest DD/DTM at Emerson.com

.

2.0 Handling

Proper handling of the Rosemount 520 is critical. To avoid damaging the
transmitter, avoid doing the following:

 Lifting by the cable if the transmitter is mounted with fittings
 Removing the protective diaphragm cap before installation
 Applying pressure to the diaphragm using fingers, tools, or sharp objects
 Using sharp objects to clean the diaphragm
 Submerging or blocking the vent tube
 Bending the cable within a radius of less than 90mm

January 2021

3.0 Mount the transmitter

Note

All installation methods described in the following sections are grounded. If a different installation
method is used, the transmitter must be grounded to meet EMC and hazardous location
requirements.

4

January 2021

A

B

C

D

F

E

G

38

Ø 12

55

125
160

50

41

194.5

Quick Start Guide

3.1 Internal mounting

1. Secure the bracket to the tank wall.

2. Secure the transmitter by use of the provided spring. The spring is fitted into
the two holes in the bracket. The transmitter can be mounted and
dismounted without the use of tools.

3. Secure the transmitter cable to the tank wall.

Note

Emerson recommends protecting the cable by appropriate means to avoid the cable being
damaged from, for example, sloshing waves.
Emerson recommends installing the transmitter in locations with limited or no turbulence.
Emerson recommends avoiding this specific mounting method for service tanks due to challenges
associated with performing service and maintenance. Other mounting methods, such as pole
mounting, flexible rubber tube mounting and flexible PTFE tube mounting are recommended for
installation inside service tanks.

Figure 1. Installation Drawing

A. Optional junction box
B. Optional bulkhead fitting
C. Dead zone
D. Lowest tank bottom

E. Transmitter
F. Mounting bracket
G. Mounting spring

5

Quick Start Guide

3.2 Pole mounting

1. Install a suitable deck socket on top of the tank.

2. Secure the transmitter inside the pipe by use of the provided nut and gasket.
The recommended torque is 20 N-m.

Figure 2. Installation Drawing

A

34
26

January 2021

40

B

C

A. Optional junction box
B. Tank top
C. Dead zone
D. Lowest tank bottom
E. Transmitter

D

F

E

30

193

H

I

G

24

26
41

F. Pipe max. length 2000 mm (yard supply)
G. Gasket
H. Welding nipple for pole, length 40 mm
I. 1-in. end cap

6

January 2021

A

B

C

D

E

F

JHG

I

34

26

30

25

55

80

193

24

26

41

3.3 1-in. pipe end mounting

1. Secure the provided nipple pipe to the tank wall or to a ball valve.

2. Secure the transmitter to the nipple pipe by use of the provided nut and
gasket. The recommended torque is 20 N-m.

Figure 3. Installation Drawing

Quick Start Guide

A. Optional junction box
B. Tank top
C. Dead zone
D. Tank bottom
E. Vent pipe

F. Gasket
G. Nut
H. Nipple pipe, length 80 mm
I. Transmitter
J. Ball valve (yard supply)

7

Quick Start Guide

C

A

G

F

E

I

D

K

B

H

L

J

D

3.4 Flange mounting

1. Install a suitable flange connection to the tank wall.

2. Secure the provided flange to the tank flange connection.

3. Secure the transmitter in the flange by use of the provided nut and gasket. The
recommended torque is 20 N-m.

Note

Emerson recommends installing a ball valve between the tank wall and transmitter to
facilitate transmitter service and maintenance.

Figure 4. Installation Drawing

January 2021

8

A. Optional junction box
B. Refer to Table 1
C. Tank top
D. Refer to Table 1
E. Dead zone
F. Tank bottom

G. Vent pipe
H. Flange
I. Gasket
J. Transmitter
K. Refer to Table 1
L. Nipple pipe connector