Emerson 8712E User Manual
Quick Installation Guide
Start
Step 1: Pre-Installation
Step 2: Handling
Step 3: Mounting
Step 4: Installation
(Flanged Sensors)
(Wafer Sensors)
(Sanitary Sensors)
Step 5: Grounding
Step 6: Wiring
Step 7: Basic Configuration
Product Certifications
End
00825-0100-4664, Rev BB
January 2013
Rosemount 8712 / 8700 Series
Rosemount 8712E Magnetic Flowmeter System
(Transmitter and Sensor)
www.rosemount.com
Quick Installation Guide
IMPORTANT NOTICE
WARNING
WARNING
Emerson Process Management
Rosemount Flow
7070 Winchester Circle,
Boulder, CO 80301
Tel (USA) 800 522 6277
Tel (International) +1 (303) 527 5200
Fax +1 (303) 530 8459
Emerson Process
Management Flow
Neonstraat 1
6718 WX Ede
The Netherlands
T +31 (0)318 495555
F +31(0) 318 495556
Emerson Process
Management Asia Pacific
Private Limited
1 Pandan Crescent
Singapore 128461
T (65) 6777 8211
F (65) 6777 0947/65 6777 07 43
Emerson FZE
P.O. Box 17033
Jebel Ali Free Zone
Dubai UAE
Tel +971 4 811 8100
Fax +971 4 886 5465
00825-0100-4664, Rev BB
Rosemount 8712 / 8700 Series
© 2013 Rosemount Inc. All rights reserved. All marks property of owner.
This document provides basic installation guidelines for the Rosemount® 8712. It does
not provide instructions for detailed configuration, diagnostics, maintenance, service,
troubleshooting, explosion-proof, flame-proof, or intrinsically safe (I.S.) installations.
Refer to the Rosemount 8712 reference manual (document number 00809-0100-4664)
for more instructions. The manual and this QIG are also available electronically on
www.rosemount.com.
Failure to follow these installation guidelines could result in death or serious
injury:
Installation and servicing instructions are for use by qualified personnel only. Do not
perform any servicing other than that contained in the operating instructions, unless
qualified. Verify that the operating environment of the sensor and transmitter is consistent
with the appropriate FM, CSA, ATEX, or IECEx approval.
Do not connect a Rosemount 8712 to a non-Rosemount sensor that is located in an
explosive atmosphere.
January 2013
The sensor liner is vulnerable to handling damage. Never place anything through the
sensor for the purpose of lifting or gaining leverage. Liner damage can render the sensor
useless.
To avoid possible damage to the sensor liner ends, do not use metallic or spiral-wound
gaskets. If frequent removal is anticipated, take precautions to protect the liner ends.
Short spool pieces attached to the sensor ends are often used for protection.
Correct flange bolt tightening is crucial for proper sensor operation and life. All bolts must
be tightened in the proper sequence to the specified torque limits. Failure to observe
these instructions could result in severe damage to the sensor lining and possible sensor
replacement.
2
Quick Installation Guide
STEP 1: PRE-INSTALLATION
00825-0100-4664, Rev BB
January 2013
Before installing the Rosemount 8712 Magnetic Flowmeter Transmitter, there are several
pre-installation steps that should be completed to make the installation process easier:
• Identify the options and configurations that apply to your application
• Set the hardware switches if necessary
• Consider mechanical, electrical, and environmental requirements
Rosemount 8712 / 8700 Series
Mechanical Considerations
The mounting site for the Rosemount 8712 transmitter should provide enough room for
secure mounting, easy access to conduit ports, full opening of the transmitter covers, and
easy readability of the LOI screen (see Figure 1).
The Rosemount 8712 is mounted separately from the sensor, it is not subject to limitations
that might apply to the sensor.
3
Rosemount 8712 / 8700 Series
4.31
(109)
LOI Keypad
Cover
9.01
(229)
11.15
(283)
2.81
(71)
3.11
(79)
12.02
(305)
0.44
(11)
Ground Lug
1
/2–14 NPT
Conduit
Connection
(4 Places)
WITH ST ANDARD COVER
NOTE
Dimensions are in inches (millimeters)
2.96
(75)
WITH LOI COVER
Figure 1. Rosemount 8712 Dimensional Drawing
Quick Installation Guide
00825-0100-4664, Rev BB
January 2013
4
Quick Installation Guide
00825-0100-4664, Rev BB
January 2013
Rosemount 8712 / 8700 Series
Environmental Considerations
To ensure maximum transmitter life, avoid excessive heat and vibration. Typical problem
areas include:
• Warm-climate installations in direct sunlight
• Outdoor installations in cold climates
Remote mounted transmitters may be installed in the control room to protect the electronics
from the harsh environment and provide easy access for configuration or service.
Remotely mounted Rosemount 8712 transmitters require external power so there must be
access to a suitable power source.
Installation Procedures
Rosemount 8712 installation includes both detailed mechanical and electrical installation
procedures.
Mount the Transmitter
At a remote site the transmitter may be mounted on a pipe up to two inches in diameter or
against a flat surface.
Pipe Mounting
To mount the transmitter on a pipe:
1. Attach the mounting plate to the pipe using the mounting hardware.
2. Attach the 8712 to the mounting plate using the mounting screws.
Identify Options and Configurations
The standard application of the 8712 includes a 4–20 mA output and control of the sensor
coils and electrodes. Other applications may require one or more of the following
configurations or options:
• Multidrop Communications
• Digital Output
• Digital Input
• Pulse Output
Additional options may apply. Be sure to identify those options and configurations that apply
to your situation, and keep a list of them nearby for consideration during the installation and
configuration procedures.
Hardware Jumpers/Switches
The 8712 electronics board is equipped with three user-selectable hardware switches.
These switches set the Failure Alarm Mode, Internal/External Analog Power, and
Transmitter Security. The standard configuration for these switches when shipped from the
factory are as follows:
Failure Alarm Mode: HIGH
Internal/External Analog Power: INTERNAL
Transmitter Security: OFF
Changing Hardware Switch Settings
In most cases, it is not necessary to change the setting of the hardware switches. If you
need to change the switch settings, complete the steps outlined in the manual.
5
Quick Installation Guide
STEP 2: HANDLING
½- through 4-Inch Sensors
6-Inch and Larger Sensors
00825-0100-4664, Rev BB
Rosemount 8712 / 8700 Series
January 2013
Electrical Considerations
Before making any electrical connections to the Rosemount 8712, consider local and plant
electrical standards and be sure to have the proper power supply, conduit, and other
accessories necessary to comply with these standards.
Handle all parts carefully to prevent damage. Whenever possible, transport the system to
the installation site in the original shipping containers. PTFE-lined sensors are shipped with
end covers that protect it from both mechanical damage and normal unrestrained distortion.
Remove the end covers just before installation.
Figure 2. Rosemount 8705 Sensor Support for Handling
6
Quick Installation Guide
STEP 3: MOUNTING
5 Pipe Diameters
2 Pipe Diameters
Flow
00825-0100-4664, Rev BB
January 2013
Rosemount 8712 / 8700 Series
Upstream/Downstream Piping
T o ensure specification accuracy over widely varying process conditions, install the sensor a
minimum of five straight pipe diameters upstream and two pipe diameters downstream from
the electrode plane (see Figure 3).
Figure 3. Upstream and Downstream StraightPipe Diameters
Installations with reduced straight runs from 0 to 5 pipe diameters are possible. In reduced
straight pipe run installations, performance will shift to as much as 0.5% of rate. Reported
flow rates will still be highly repeatable.
Flow Direction
The sensor should be mounted so the FORWARD end of the flow arrow, shown on the
sensor identification tag, points in the direction of flow through the sensor.
Sensor Orientation
The sensor should be installed in a position that ensures the sensor remains full during
operation. Vertical installation allows upward process fluid flow and keeps the
cross-sectional area full, regardless of flow rate. Horizontal installation should be restricted
to low piping sections that are normally full. In these cases, orient the electrode plane to
within 45° of horizontal.
7
Quick Installation Guide
FLOW
FLOW
45° Electrode Plane
45° Electrode Plane
00825-0100-4664, Rev BB
Rosemount 8712 / 8700 Series
Figure 4. Sensor Orientation
The electrodes in the Rosemount 8705 sensor are properly orientated when the two
measurement electrodes are in the 3 and 9 o’clock positions, as shown on the right of
Figure 4.
The electrodes in the Rosemount 8711 are properly orientated when the top of the sensor is
either vertical or horizontal, as shown in Figure 5. Avoid any mounting orientation that
positions the top of the sensor at 45° from the vertical or horizontal position.
Figure 5. Rosemount 8711 Mounting Position
January 2013
8
Quick Installation Guide
STEP 4: INSTALLATION
00825-0100-4664, Rev BB
January 2013
Rosemount 8712 / 8700 Series
Flanged Sensors
Gaskets
The sensor requires a gasket at each of its connections to adjacent devices or piping. The gasket
material selected must be compatible with the process fluid and operating conditions. Metallic or
spiral-wound gaskets can damage the liner. Gaskets are required on each side of a
grounding ring. All other applications (including sensors with lining protectors or a grounding
electrode) require only one gasket on each end connection.
Figure 6. Flanged gasket placement
Flange Bolts
NOTE
Do not bolt one side at a time. Tighten each side simultaneously. Example:
1. Snug left
2. Snug right
3. Tighten left
4. Tighten right
Do not snug and tighten the upstream side and then snug and tighten the downstream side.
Failure to alternate between the upstream and downstream flanges when tightening bolts
may result in liner damage.
Suggested torque values by sensor line size and liner type are listed in Table 1 for ASME
B16.5 (ANSI) and Table 2 for DIN flanges. Consult the factory if the flange rating of the
sensor is not listed. Tighten flange bolts on the upstream side of the sensor in the
incremental sequence shown in Figure 7, to 20% of the suggested torque values. Repeat
the process on the downstream side of the sensor. For sensors with more or less flange
bolts, tighten the bolts in a similar crosswise sequence. Repeat this entire tightening
sequence at 40%, 60%, 80%, and 100% of the suggested torque values or until the leak
between the process and sensor flanges stop.
9
Quick Installation Guide
1
5
3
7
8
4
6
2
8-bolt
00825-0100-4664, Rev BB
Rosemount 8712 / 8700 Series
If leakage has not stopped at the suggested torque values, the bolts can be tightened in
additional 10% increments until the joint stops leaking, or until the measured torque value
reaches the maximum torque value of the bolts. Practical consideration for the integrity of
the liner often leads the user to distinct torque values to stop leakage due to the unique
combinations of flanges, bolts, gaskets, and sensor liner material.
Check for leaks at the flanges after tightening the bolts. Failure to use the correct tightening
methods can result in severe damage. Sensors require a second tightening 24 hours after
the initial installation. Over time, sensor liner materials may deform under pressure.
Figure 7. Flange Bolt Torquing Sequence
January 2013
Table 1. Suggested Flange Bolt Torque Values for Rosemount 8705 and 8707 High-Signal Sensors
Size
Code
005 0.5 inch (15 mm) 8 8 - 010 1 inch (25 mm) 8 12 - 015 1.5 inch (40 mm) 13 25 7 18
020 2 inch (50 mm) 19 17 14 11
030 3 inch (80 mm) 34 35 23 23
040 4 inch (100 mm) 26 50 17 32
060 6 inch (150mm) 45 50 30 37
080 8 inch (200 mm) 60 82 42 55
100 10 inch (250 mm) 55 80 40 70
120 12 inch (300 mm) 65 125 55 105
140 14 inch (350 mm) 85 110 70 95
160 16 inch (400 mm) 85 160 65 140
180 18 inch (450 mm) 120 170 95 150
200 20 inch (500 mm) 110 175 90 150
240 24 inch (600 mm) 165 280 140 250
300 30 inch (750 mm) 195 415 165 375
360 36 inch (900 mm) 280 575 245 525
Line Size
PTFE/ETFE/PFA
Class 150
(pound-feet)
liners
(pound-feet)
Class 300
Polyurethane/Neoprene/Linatex/Adiprene
Class 150
(pound-feet)
liner
10
Class 300
(pound-feet)
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