Emerson Rosemount Ultrasonic 3107 User manual

Quick Start Guide
00825-0200-4840, Rev BC
August 2019
Rosemount™ 3107 Level and 3108 Flow
Transmitters
Ultrasonic

Contents
About this guide...........................................................................................................................3
Overview of Rosemount 3107 and 3108.......................................................................................6
Considerations before you install................................................................................................. 9
Installation................................................................................................................................. 11
Connecting the transmitter........................................................................................................16
Configuration.............................................................................................................................18
Product Certifications.................................................................................................................33
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2 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

1 About this guide
This installation guide provides basic guidelines for the Rosemount 3107
Level Transmitter and Rosemount 3108 Flow Transmitter. It does not
provide instructions for detailed configuration, diagnostics, maintenance,
service, troubleshooting, or installations. Refer to the Rosemount 3107 and
3108 Reference Manual for more instructions. Manuals are available
electronically on Emerson.com/Rosemount.
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WARNING
Failure to follow these installation guidelines could result in death or
serious injury.
•The Rosemount 3107 and Rosemount 3108 are ultrasonic transmitters.
They must be installed, connected, commissioned, operated, and
maintained by suitably qualified personnel only, observing any national
and local requirements that may apply.
•Use the equipment only as specified. Failure to do so may impair the
protection provided by the equipment.
Explosions could result in death or serious injury.
•Installation of the transmitters in a hazardous environment must be in
accordance with the appropriate local, national, and international
standards, codes, and practices. Please review the Product Certifications
section for any restrictions associated with a safe installation.
•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.
•Verify that the operating atmosphere of the transmitter is consistent
with the appropriate hazardous locations certifications.
External surface may be hot. Care must be taken to avoid possible burns.
Process leaks could result in death or serious injury.
•Install and tighten process connectors before applying pressure.
•Do not attempt to loosen or remove process connectors while the
transmitter is in service.
Electrical shock could cause death or serious injury.
•Make sure that the transmitter is not powered when making
connections.
•If the liquid level switch is installed in a high voltage environment and a
fault condition or installation error occurs, high voltage may be present
on leads and terminals.
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4 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

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.
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2 Overview of Rosemount 3107 and 3108
The Rosemount 3107 and 3108 are sealed 4–20 mA loop-powered liquid
level transmitters, specifically designed for use in waste water and effluent
treatment plant on aqueous applications.
These rugged UPVC transmitters are certified Intrinsically Safe for use in
Zone 0 areas, and factory fitted with up to 165 ft. (50 m) of two-core cable
for simple low cost installation in sumps, wet-wells and over open channel
flow structures.
The transmitter may be mounted in a hazardous area if powered from a
protected power supply. They can be connected directly to a plant control
system, or used with a Rosemount 3490 Series Control Unit for
programmable control functionality.
Theory of operation
Each transmitter is designed to be mounted above a liquid, and uses
ultrasonic pulses to continuously measure the distance to the liquid surface.
The microprocessor-controlled electronics calculates distance to the liquid
level from the time delay between the transmitting and receiving of signals.
When programmed with the bottom reference of the application – usually
the bottom of a tank – the transmitter will calculate the liquid depth (level),
and output the level (Figure 2-1) as a 4–20 mA signal and a digital HART®
signal.
The Rosemount 3107 and 3108 can also calculate contents (volume) or
open channel flow, and then output the result as a 4–20 mA signal and a
digital HART signal.
Programming is achieved by remote communication using HART.
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Figure 2-1: Typical Application
A. Rosemount 3108 Flow Transmitter
B. Rosemount 3490 Series Control Unit
C. 4–20 mA signal output
D. Relay
E. Pump
F. Transmitter Bottom Reference
G. 4–20 mA and HART signal input
Components of the transmitter
The transmitter has a housing containing advanced electronics to generate
ultrasonic pulses, process the resultant signals, and provide a 4–20 mA and
HART output.
There is a factory-fitted cable for the signal output and connecting an
external power supply. The Rosemount 3108 has a factory-fitted remote
temperature sensor.
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Figure 2-2: Transmitter Components
E
A
D
D
C
B
A. Mounting bracket
B. Two-core cable
C. 1-in. mounting thread
D. UPVC wetted parts
E. Remote temperature sensor (Rosemount 3108 only)
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8 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

3 Considerations before you install
Install the transmitter where it is protected from ultraviolet radiation to
prevent long-term degradation of the plastics used in its construction (e.g.
shrouded from direct sunlight).
Note
See also Product Certifications for special conditions for safe use.
General
•Installation must be carried out by suitably trained personnel in
accordance with the applicable code of practice.
•If the equipment is likely to come into contact with aggressive
substances, it is the responsibility of the user to take suitable precautions
that prevent it from being adversely affected, thus ensuring that the type
of protection is not compromised.
•Aggressive substances are acidic liquids or gases that may attack metals
or solvents that may affect polymeric materials.
•Suitable precautions are regular checks as part of routine inspections, or
establishing, from the material's data sheet, that it is resistant to specific
chemicals.
•The equipment should only be cleaned with a damp cloth; do not use
solvents.
•The transmitter is double insulated, and therefore protective earthing is
not required. However, the cable screen should be connected (see Figure
5-1).
•Note that if the equipment is used in a manner not specified by the
manufacturer, the protection afforded by the equipment may be
impaired.
•This transmitter is classified Type A in accordance with the European
EMC directive 2004/108/EC. To ensure electro-magnetic compatibility,
in any member state, it should not be installed in a residential area.
Note
It is not advisable to mount the transmitter in close proximity to a source of
electrical noise such as a variable-speed drive, or other high-powered
electrical device.
Environmental
The Rosemount 3107 and 3108 ultrasonic transmitters are Intrinsically Safe
(IS) approved for hazardous area installations.
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•The Rosemount 3107 is designed for open or closed tank installation. It is
weatherproof and protected against the ingress of dust
•The Rosemount 3108 is designed for open channel flow measurement. It
is weatherproof and protected against the ingress of dust
•Avoid installing the Rosemount 3107 and 3108 transmitters near heat
sources
Figure 3-1: Environmental Considerations
OKOK OK
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