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Quick Start Guide: 8712H
Manuals & Guides
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Rosemount Quick Start Guide: 8712H Manuals & Guides

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Quick Installation Guide
00825-0100-4729, Rev BB August 2015
Rosemount 8712H
Rosemount Magnetic Flowmeter Systems (Transmitter and Flowtube)
www.rosemount.com
Quick Installation Guide
IMPORTANT NOTICE
WARNING
00825-0100-4729, Rev BB August 2015
© 2015 Rosemount Inc. All rights reserved. All marks property of owner.
Rosemount 8712H
This installation guide provides basic guidelines for the Rosemount configuration, diagnostics, maintenance, service and troubleshooting installations. Refer to the 8712H reference manual (document number 00809-0100-4729) for more instruction. 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 flowtube and transmitter is consistent with the appropriate FM or CSA approval.
Do not connect a Rosemount 8712H to a non-Rosemount flowtube that is located in an explosive atmosphere.
®
8712H. It does not provide instructions for detailed
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Quick Installation Guide
WARNING
WARNING
00825-0100-4729, Rev BB August 2015
Explosions could result in death or serious injury:
Installation of this transmitter in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices. Please review the approvals section of the 8712H 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-incendive field wiring practices.
In an Explosion-Proof/Flame-Proof installation, do not remove the flowtube cover when power is applied to the unit.
Electrical shock can result in death or serious injury
• Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock.
The flowtube liner is vulnerable to handling damage. Never place anything through the flowtube for the purpose of lifting or gaining leverage. Liner damage can render the flowtube useless.
To avoid possible damage to the flowtube 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 flowtube ends are often used for protection.
Correct flange bolt tightening is crucial for proper flowtube 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 flowtube lining and possible flowtube replacement.
Rosemount 8712H
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Quick Installation Guide
STEP 1: PRE-INSTALLATION
4.31
(109)
LOI Cover
Standard
Cover
3.51 (89)
2.96 (75)
11.1 5 (283)
3.11 (79)
12.02 (305)
0.44 (11)
With LOI Cover
9.01
(229)
2.81 (71)
00825-0100-4729, Rev BB August 2015
Rosemount 8712H
Before installing the Rosemount 8712H 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
Mechanical Considerations
The mounting site for the Rosemount 8712H 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 transmitter should be mounted in an upright position.
If the 8712H is mounted separately from the flowtube, it is not subject to limitations that might apply to the flowtube.
Figure 1. Rosemount 8712H Dimensional Drawing
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Quick Installation Guide
00825-0100-4729, Rev BB August 2015
Rosemount 8712H
Environmental Considerations
To ensure maximum transmitter life, avoid excessive heat and vibration. Typical problem areas:
• high-vibration lines with integrally mounted transmitters
• 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 provides easy access for configuration or service.
Both remotely and integrally mounted Rosemount 8712H transmitters require external power and there must be access to a suitable power source.

Installation Procedures

Rosemount 8712H 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 8712H to the mounting plate using the mounting screws.
Surface Mounting
To surface mount the transmitter:
1. Attach the 8712H to the mounting location using the mounting screws.
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Quick Installation Guide
00825-0100-4729, Rev BB August 2015
Rosemount 8712H
Identify Options and Configurations
The standard application of the 8712H includes a 4–20 mA output and control of the flowtube coils. Other applications may require one or more of the following configurations or options:
• Multidrop Communications
• PZR (Positive Zero Return)
• Ultrasonic Control
• Auxiliary Output
• 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 8712H 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.
Electrical Considerations
Before making any electrical connections to the 8712H, consider the following standards and be sure to have the proper power supply, conduit, and other accessories.
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Quick Installation Guide
STEP 2: HANDLING
3- through 4-Inch
Flowtubes
6-Inch and Larger
Flowtubes
8732-0281B02A, C02A
00825-0100-4729, Rev BB August 2015
Handle all parts carefully to prevent damage. Whenever possible, transport the system to the installation site in the original shipping containers. Teflon
®
lined flowtubes 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 Flowtube Support for Handling
Rosemount 8712H
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Quick Installation Guide
STEP 3: MOUNTING
5 Pipe Diameters
2 Pipe Diameters
Flow
8732-0281G02A
00825-0100-4729, Rev BB August 2015
Rosemount 8712H
Upstream/Downstream Piping
To ensure specification accuracy over widely varying process conditions, install the flowtube 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 Straight Pipe Diameters
Flow Direction
The flowtube should be mounted so that the FORWARD end of the flow arrow, shown on the flowtube identification tag, points in the direction of flow through the tube.
Flowtube Orientation
The flowtube should be installed in a position that ensures the flowtube remains full during operation. Vertical installation allows upward process fluid flow 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 degrees of horizontal.
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Quick Installation Guide
FLOW
FLOW
A
8735-0005A01A, 8732-0005A01C
8711-8711-E01A, 8711-8711-F01A
45° Electrode Plane
00825-0100-4729, Rev BB August 2015
Figure 4. Flowtube Orientation
The electrodes in the Rosemount 8705 flowtube 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.
Figure 5. Rosemount 8711 Mounting Position
Rosemount 8712H
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