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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6 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

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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10 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

4 Installation
•Mount the transmitter above the liquid using the 1-in. threaded
connection provided, but no closer than 13.8 in. (0,35 m) to the surface.
The transmitter does not detect any liquid surface closer than 12 in. (0,3
m) to the transmitter face.
•The transmitter should be mounted vertically to ensure a good echo
from the liquid surface. The beam half angle of the transmitter is 6
degrees (Figure 4-2).
•Obstructions in the tank, or well, may generate echoes which can be
confused with the real liquid surface echo. Obstructions within the beam
angle generate strong false echoes. Wherever possible, the transmitter
should be positioned to avoid false echoes.
•To avoid detecting unwanted objects in the tank or well, it is advisable to
maintain a distance of at least 1.3-in (33.02 mm). from the center line of
the transmitter for every foot (11 cm per meter) range to the
obstruction. (See Figure 4-2).
•No false echoes are generated if the transmitter is located near the side
of the tank or well and the wall is smooth and free of protrusions.
However, there will still be a reduction in the echo size. It is
recommended that the transmitter be mounted no closer than 12 in.
(0,3 m) to the wall to avoid a large reduction in the echo size.
•If the transmitter is mounted in an enclosed tank with a domed top,
avoid mounting the transmitter in the center of the tank roof because
this could act as a parabolic reflector and create unwanted echoes.
•Avoid applications where heavy condensation could form on the
transmitter face.
•If the transmitter is mounted in a stand-off or nozzle, the transmitter
face should protrude at least 0.2 in. (5 mm) into the tank.
•If the transmitter is used in environments where direct sunlight can
cause high surface temperatures on exposed instruments, a sun-shade is
recommended.
4.1 Mounting the transmitter above the liquid surface
A one-inch threaded process connection is provided to mount the
transmitter (Figure 4-1). The thread form is either BSPP (G1) or NPT, and is
marked below the mounting thread.
Mounting bracket
The transmitter is supplied with a purpose made 316 Stainless Steel
mounting bracket (Figure 4-1), which should be used to mount the
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transmitter over the liquid surface. The bracket is designed to fit over the
threaded neck of the transmitter and is retained by a locknut.
Use a chain or wire through the hole provided in the bracket, which is shaped
to ensure that the transmitter will hang perpendicular to the water surface.
Never suspend the transmitter by the cable. Check that the material of the
chain or wire is corrosion resistant to the liquids and any vapors present.
The bracket may be bolted to a suitable crossmember above the liquid
surface. Ensure the transmitter is perpendicular to the surface to maximize
the return echo size.
Figure 4-1: Mounting Thread and Supplied Bracket
A. 1-in. threaded process connection
Note
To help with alignment, the echo size (signal strength) can be indicated on
the Rosemount 3490 Series Control Unit or a Field Communicator.
Flange mounting
The instrument (accessory) flanges supplied by Emerson are manufactured
from PVC and are a full face design. Care must be taken when installing to a
raised face mating flange on the tank or vessel to prevent distortion of the
PVC flange by overtightening the bolts. See Product Data Sheet for a list of
all accessories and their part numbers.
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Figure 4-2: Recommended Mounting Position
A. Transmitter is mounted vertically (maximum deviation of 3°).
B. 6° beam half angle.
C. 1.3 in./ft. (11 cm/m). Minimum of 12 in. (0.3 m).
Mounting from a conduit
The transmitters can be mounted from a conduit using the optional adaptor
accessory. See Product Data Sheet for a list of all accessories and their part
numbers.
4.2 Open channel flow installations
Mount an ultrasonic transmitter over an area of clear liquid. Avoid mounting
the transmitter directly over any inlet stream. Never suspend the transmitter
by the cable.
The positioning is critical, and should be the correct distance upstream from
the flow structure as stated in the relevant standard for your country. For
example, in the ISO standards, the distance should be four to five times the
maximum height of the water (Hmax) for a thin plate weir, or three to four
times Hmax for a flume. For optimum accuracy, position the transmitter’s
front face at a height equal to the sum of the maximum flow depth plus the
transmitter deadband of 12.2 in. (300 mm) plus an extra 2 in. (50 mm).
It is important that the bottom reference of the transmitter should be
related to the datum of the primary measuring device (Figure 4-4).
When setting the bottom reference on a ‘V’- notch weir, it is important the
true invert is used (Figure 4-5) and not the meniscus level.
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Figure 4-3: Choosing the Height Position Above a Flow
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A. Transmitter front face
B. Hmax
C. Transmitter bottom reference = Hmax + 12.2 in. (300 mm) + 2 in. (50
mm)
Figure 4-4: Bottom Reference of a Flume or Weir
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A. Transmitter bottom reference
B. Primary element (e.g. flume, weir) invert
C. Approach channel
D. Flow
Note
The transmitter should be free from a situation where it is likely to "drown"
(refer to the relevant standard for further information)
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14 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

Figure 4-5: Bottom Reference of a ‘V’ Notch Weir
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A. Transmitter bottom reference (i.e. true invert)
B. Meniscus level
The Rosemount 3108 transmitter has a factory fitted remote temperature
sensor. The temperature sensor is enclosed in a M8 × 1.5 threaded stainless
steel body, and can be installed in a suitable plastic conduit box and clamped
in place using a suitable compression-type cable gland.
4.3 Open weir chamber
Mount the remote temperature sensor so that it is representative of the
mean air temperature in the chamber and is in a shaded area away from
direct sunlight and solar radiation.
4.4 Enclosed or partially-covered flume chamber
Mount the remote temperature sensor in the approach channel, in a shaded
area away from direct sunlight and solar radiation. The temperature sensor
should be positioned in the weir chamber or flume approach channel so the
average air temperature can be accurately measured. The temperature
sensor must be protected at all times from direct sunlight and any radiated
heat.
In extreme high temperatures, for the best accuracy and stability of level
measurement reading, the transmitter should be shrouded to prevent the
incidence of direct sunlight and solar radiation. If the flow structure permits,
mount the transmitter within the flow channel or chamber.
Note
For some installations, the use of a calibration device is mandatory. Emerson
offers the Rosemount Head Verification Device (HVD) for this purpose. See
theQuick Installation Guide for more information.
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5 Connecting the transmitter
Note
To comply with the Canadian Standards Association (CSA) requirements, the
transmitters must be powered from a Rosemount 3490 Series Control Unit,
or a class 2 or separate extra-low voltage (SELV) source. Other devices may
reset if connecting the transmitter to a multi-drop system while the loop is
powered. De-energize loop to avoid devices being reset.
The Rosemount 3107 and 3108 are two-wire, loop-powered transmitters
accepting external power supplies as follows:
•12 to 40 Vdc in a non-hazardous area
•12 to 30 Vdc in a hazardous area
Each transmitter is supplied with a factory-fitted PVC sheathed, two-core,
shielded cable for communications and external power supply connections.
There are no cable conduit entries or covers to remove. The cable may be
cut to length on site or may be extended using a junction box and suitable
extension cable.
5.1 Installation in a non-hazardous area
Procedure
1. Make sure that the power supply is disconnected.
2. Connect the cable wires (Figure 5-1), taking note of the required
voltage of 12 to 40 Vdc for non-hazardous applications.
5.2 Installation in a hazardous area
When the transmitters are used with a Rosemount 3490 Series Control Unit,
no additional safety barriers are required. If powering the transmitter from
any other source, ensure a suitable Intrinsically Safe barrier is fitted in the
non-hazardous (safe) area.
To connect the transmitter:
Procedure
1. Make sure that the power supply is disconnected.
2. Connect the cable wires (Figure 5-1), taking note of the restricted
voltage of 12 to 30 Vdc for hazardous applications.
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16 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

Figure 5-1: Wiring
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A. Remote temperature sensor (Rosemount 3108 only)
B. Black: 0 Vdc
C. Red: 12 to 40 Vdc (non-hazardous area), 12 to 30 Vdc from
protective barrier (hazardous area)
D. Non-hazardous area: connect cable screen to standard ground
(Earth) or hazardous area: connect cable screen to I.S. ground
(Earth)
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6 Configuration
The transmitter can be configured and verified using a Field Communicator
or a Rosemount 3490 Series Control Unit.
The parameters in this section are sufficient for a basic level, contents
(volume), or open channel flow application. For a more advanced
application, refer to the Rosemount 3107 Level and 3108 Flow Transmitters
Reference Manual.
6.1 Transmitter base units
When the transmitter is shipped from the factory, the default factory setting
for Base Units is “metric” or “imperial ft” depending on the model order
code.
Note
Keep a record of your programmed settings. Changing the base units will
reset parameters to their default factory settings in the appropriate units.
6.1.1 Selecting Base Units (Field Communicator or AMS)
To change the transmitter base units:
Procedure
1. From the Home screen, select 3: Service Tools.
2. Select 4: Maintenance.
3. Select 3: Utilities.
4. Select 3: Set Base Units.
5. Select new base units.
Note
When on-screen messages appear, take action if needed and press
“OK”.
6.1.2 View or change the transmitter base units (Rosemount 3490 Series
Control Unit)
To view or change the transmitter base units:
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18 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters

Procedure
1. From the Main Menu screen, select SETUP.
2. Select the transmitter (e.g. “Tx1: 3107”).
3. Select SYSTEM, and then select Base Units.
4. Select new base units.
Base Units
Esc=Quit =Edit
metric
Note
To get the same base units on the control unit, switch the power off
and then on again. The control unit prompts for the transmitter’s
Bottom Reference value in the new base units.
6.2 Transmitter bottom reference
This is the transmitter’s Bottom Reference setting. It is the distance measured
vertically along the ultrasonic beam path from the User Preferred Sensor
Reference Point (UPSRP) to the Zero Level of a tank or an open channel
(Figure 6-4).
The zero level establishes where the transmitter starts to measure the
process value. It is not necessary to have the 4 mA output start at the zero
level, and the 4 mA starting pointing can be any liquid height above or below
this zero level.
Note
This parameter is important for calibrating and configuring the transmitter.
6.2.1 Viewing of changing P010 (Field Communicator or AMS)
To view or change the bottom reference:
Procedure
1. From the Home screen, select 2: Configure.
2. Select 2: Manual Setup.
3. Select 1: Basic Setup.
4. Select 2: Bottom Reference P010.
5. Input the new bottom reference, and press “ENTER” to save it.
6. Press “SEND” to update the transmitter.
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Bottom Reference P010
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40.000 ft
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20 Rosemount Ultrasonic 3107 Level and 3108 Flow Transmitters