Rosemount Series 8700 User manual

Series 8700 Magnetic
Flowmeter Flowtubes
00809-0100-4727
English
Rev. CA

Product Manual
1Series 8700 Magnetic
Flowmeter Flowtubes
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Read this manual before working with the product. For personal and system
safety, and for optimum product performance, make sure you thoroughly
understand the contents before installing, using, or maintaining this product.
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Customer Central: 1-800-999-9307 (
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Technical support, quoting, and order-related questions.
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For equipment service or support needs outside the United States, your local
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The products described in this document are NOT designed for
nuclear-qualified applications.
Using non-nuclear qualified products in applications that require
nuclear-qualified hardware or products may cause inaccurate readings.
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Rosemount Sales Representative.
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NOTICE
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A.

Table of Contents
Procedures and instructions in this manual may require special precautions to
ensure the safety of the personnel performing the operations. Refer to the
safety messages at the beginning of each section before performing
any operations.
IMPORTANT
i
SECTION 1
Introduction Manual Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
SECTION 2
Installation Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Step 1: Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Step 2: Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Upstream/Downstream Piping . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Flowtube Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Flow Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Step 3: Installation of Model 8705 and Model 8707 High-Signal . . . 2-5
Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Step 3: Installation of Model 8711 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Flange Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Step 4: Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Step 5: Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Conduit Ports and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Cable Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-13
Flowtube to Model 8712C/U Transmitter Connections . . . . . . .2-14
High-Signal Flowtube to High-Signal Transmitter Connections 2-15
Model 8705 and Model 8711 Flowtube to Model 8732C Transmitter
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-16
Step 6: Process Leak Protection (Model 8705 and Model 8707 High-Sig-
nal Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17
Process Leak Containment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-17
Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-18
SECTION 3
Start-up and Operation Flowtube Calibration Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Quick Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
SECTION 4
Troubleshooting Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Independent Flowtube and Transmitter Replacement . . . . . . . . . . . 4-1
Flowtube Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

ii
SECTION 5
Model 8705 and Model 8707
High-Signal Specifications
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Model 8705 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
Model 8707 High-Signal Ordering Information . . . . . . . . . . . . . . . .5-12
SECTION 6
Model 8711 Specifications Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
APPENDIX A
Operation Planning Flowtube Site Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Adequate Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Bypass Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Model 8705 and Model 8711 Flowtubes . . . . . . . . . . . . . . . . A-3
Model 8707 High-Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Flowtube Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Upstream/Downstream Piping Length . . . . . . . . . . . . . . . . . A-4
Vertical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Line Power Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Low-Noise Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4
Magnetic Flowmeter Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
Process Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5
APPENDIX B
Magnetic Flowmeter Oper-
ating Principles
Operating Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Primary and Secondary Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Series 8700 Magnetic Flowmeter Flowtube . . . . . . . . . . . . . . . . B-2
Series 8700 Magnetic Flowmeter Transmitter . . . . . . . . . . . . . . B-2
Electrical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Pulsed dc Field Coil Advantages . . . . . . . . . . . . . . . . . . . . . . . . . B-3
APPENDIX C
Field-Removable Elec-
trodes
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Remove the Electrode Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Replace the Electrode Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
INDEX Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

Section
1-1
1Introduction
MANUAL SCOPE The Rosemount Series 8700 Magnetic Flowmeter System combines separate
flowtube and transmitter units. This manual is designed to assist in the
installation and operation of Rosemount Model 8705, Model 8707 High-
Signal, and Model 8711 Magnetic Flowmeter Flowtubes.
Specific transmitter information is located in the product manual
for the Model 8712C/U/H (Manual 00809-0100-4729) or Model 8732C
(Manual 00809-0100-4725) Magnetic Flowmeter Transmitters.
Section 1: Introduction describes the scope of the manual. A short
system and operation description is provided.
Section 2: Installation gives instruction on the physical
installation of the flowtube.
Section 3: Start-Up and Operation describes the flowtube calibration
number and contains flowtube configuration information.
Section 4: Troubleshooting describes Series 8700 Flowtube
troubleshooting procedures and electrical circuit diagrams.
Section 5: Model 8705 and Model 8707 High-Signal Flowtube
Specifications contains specifications for Model 8705 flowtubes and
provides reference tables and figures.
Section 6: Model 8711 Flowtube Specifications contains specifications for
Model 8711 flowtubes and provides reference tables and figures
Appendix A: Operation Planning discusses information to consider for a
successful installation.
Appendix B: Magnetic Flowmeter Operating Principles discusses the
operating principle of the magnetic flowtube based on Faraday’s law of
electromagnetic induction.
Appendix C: Field Removable Electrodes supplies information for
removing and replacing the electrode assembly.
Attempting to install and operate Model 8705, Model 8707 High-Signal, or Model
8711 Magnetic Flowmeter Flowtubes without reviewing the instructions contained in
this manual could result in personal injury or equipment damage.

Rosemount Series 8700 Magnetic Flowmeter Flowtube
1-2
SYSTEM DESCRIPTION A Rosemount Series 8700 Magnetic Flowmeter System measures
volumetric flow rate by detecting the velocity of a conductive
liquid that passes through a magnetic field. The system consists
of two major assemblies: the Model 8705, Model 8707 High-Signal, or
Model 8711 Magnetic Flowmeter Flowtubes combined with the Model
8712C/U/H or the Model 8732C Magnetic Flowmeter Transmitters.
The flowtube is installed in-line with process piping — either
vertically or horizontally. Coils located on opposite sides of the
flowtube create the necessary magnetic field. A conductive liquid
moving through the magnetic field generates a voltage that is
detected by two electrodes.
The transmitter drives the coils to generate the magnetic field and
electronically conditions the voltage detected by the electrodes. The
transmitter then produces analog and frequency output signals
proportional to the liquid velocity.

Section
2-1
2Installation
This section covers the steps required to physically install the flowtube.
Detailed information regarding operation planning and magnetic
flowmeter theory is found in the appendices.
SAFETY MESSAGES Instructions and procedures in this section may require special
precautions to ensure the safety of the personnel performing the
operations. Please refer to the following safety messages before
performing any operation in this section.
STEP 1:
HANDLING
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.
Flanged 6- through 36-inch flowtubes come with lifting lugs on each
flowtube flange. The lifting lugs make the flowtube easier to handle
when it is transported and lowered into place at the installation site.
Flanged ½- to 4-inch flowtubes do not have lugs. They must be
supported with a lifting sling on either side of the housing.
Figure 2-1 shows flowtubes correctly supported for handling and
installation. Notice the plywood end pieces are still
in place to protect the flowtube liner during transportation.
Failure to follow these installation guidelines could result in death or serious injury:
Installation and servicing instructions are for use by qualified personnel only.
Performing any servicing other than that contained in this manual may
result in death or serious injury. Do not perform any servicing other than
that contained in the operating instructions, unless qualified.
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.

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-2
STEP 2:
MOUNTING
Physical mounting of a flowtube is similar to installing a typical section
of pipe. Conventional tools, equipment, and accessories (bolts, gaskets,
and grounding hardware) are required.
Calibration Rosemount flowtubes are wet calibrated at the factory. They do not
need further calibration during installation.
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 2-2).
½- through 4-Inch
Flowtubes 6- through 36-Inch Flowtubes
8705-0281D02A, 0281E02A
FIGURE 2-1.
Flowtube Support for
Handling and Installation.
8
705-0281F02A.EPS
5 Pipe Diameters 2 Pipe Diameters
FLOW
FIGURE 2-2.
Upstream and Downstream
Straight Pipe Diameters.

2-3
Installation
Flowtube Orientation The flowtube should be installed in a position that ensures the flowtube
remains full during operation. Horizontal or inclined positions are
preferred. Figures 2-3, 2-4, and 2-5 show the proper flowtube orientation
for the most common installations.
The following orientations ensure that the electrodes are in the
optimum plane to minimize the effects of entrapped gas. Further
information on electrode orientation can be found in Appendix A.
As illustrated in Figures 2-4B and 2-5B, avoid downward flows where back
pressure does not ensure that the flowtube remains full at all times.
FLOW
8705-0005F01A
FIGURE 2-3.
Horizontal Flowtube Orientation.
FLOW
B
8705-0005G01A, 0005G01B
FIGURE 2-4.
Vertical Flowtube Orientation.
A
FLOW

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-4
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 (see Figure 2-6). In this mounting
configuration, the conduit ports point upstream.
FLOW
FLOW
B
8705-0005E01A, 0005E01B
FIGURE 2-5.
Incline or Decline Orientation.
A
FIGURE 2-6.
Flow Direction.
FLOW
Flow Direction Arrow
8705-0281H02F

2-5
Installation
STEP 3:
INSTALLATION OF MODEL
8705 AND MODEL 8707
HIGH-SIGNAL
The following drawings should be used as a guide in the installation of
the Model 8705 and Model 8707 High-Signal Flowtubes. Refer to page
2-7 for installation of the Model 8711 Flowtube.
Gaskets The flowtube 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, and must not damage the liner.
If grounding rings are not attached (or shipped separately), a gasket is
required on each side of the grounding ring, as shown in Figure 2-7. All
other applications (including lining protector, grounding electrode, and
attached grounding ring) require only one gasket on each end
connection, as shown in Figure 2-8.
When using attached grounding rings, loosen the nut on the flowtube
flange before installing the gasket. The flange nut should be tightened
after the gasket and flange bolt have been installed.
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.
Gasket (Supplied by user)
Non-attached Grounding Ring
Gasket (Supplied by user)
FIGURE 2-7.
Gasket Placement with Non-attached
Grounding Rings
8705-0038D
FIGURE 2-8.
Gasket Placement.
8705-0040E
Gasket (Supplied by user)

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-6
Flange Bolts Flowtube sizes and torque values for both Class 150 and Class 300
flanges are listed in Table 2-1. Tighten flange bolts in the incremental
sequence, shown in Figure 2-9. See Tables 5-4, 5-4, and 5-5 for bolt sizes
and hole diameters.
Always check for leaks at the flanges after tightening the flange
bolts. All flowtubes require a second torquing 24 hours after initial
flange bolt tightening.
TABLE 2-1. Flange Bolt Torque
Specifications for Model 8705 and
Model 8707 High-Signal Flowtubes.
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.
Torque the flange bolts
in increments according to
the above numerical sequence.
8701-0870G02A
4-Bolt 8-Bolt
12-Bolt 14-Bolt
20-Bolt
FIGURE 2-9.
Flange Bolt
Torquing Sequence.
Nominal
Flowtube
Size (inches)
Bolt Torque
Specifications in Foot-Pounds
Class 150 Flange Class 300 Flange
½
1
1½
2
3
4
6
8
10
12
14
16
18
20
24
30
36
10
10
17
25
45
35
60
80
70
80
100
90
125
125
150
150
200
10
10
22
17
35
50
65
60
65
80
—
—
—
—
—
—
—

2-7
Installation
STEP 3:
INSTALLATION OF
MODEL 8711
The following section should be used as a guide in the installation of the
Model 8711 Flowtube.
Gaskets The flowtube 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, and must not damage the liner. If grounding
rings are used, a gasket is required on each side of the grounding ring.
The flowtube inside diameter should be centered with respect to the
inside diameter of the adjoining upstream and downstream piping. This
will ensure the flowmeter achieves its specified accuracy. Mounting
bolts supplied with 0.15 through 1-inch (4–25 mm) line sizes are
specifically sized to properly align these flowtubes with the flange
configurations specified. For 1.5 through 8-inch (40–200 mm) line sizes,
two centering rings are supplied for alignment purposes. Place the
centering rings over the flowtube using the following instructions as a
reference.
Alignment with Centering Rings (see Figure 2-10)
1. Insert the two studs for the bottom side of the flowtube between
the pipe flanges.
2. Place the two centering rings over each end of the flowtube.
3. Place the flowtube between the flanges. Make sure that the
centering rings are properly placed in the studs. The studs should
be aligned with the markings on the rings that correspond to the
flange you are using.
4. Insert the remaining studs, and install the washers and nuts.
5. Tighten the nuts to the specifications listed in Table 2-2.
NOTE
On the 4- and 6-inch PN 10–16, insert the flowtube with rings first and
then insert the studs. The slots on this ring scenario are located on the
inside of the ring.
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.
Centering Ring
Centering Ring
Gasket
(Supplied by User)
Installation Studs,
Nuts, and Washers
8732-0002A1A
FIGURE 2-10.
Gasket Placement with Centering Rings.

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-8
Alignment with Centering Sleeves
Follow the instructions below for the 1.5- through 8-inch (40 to 200 mm)
line sizes if you received two centering sleeves instead of centering rings:
1. Insert the two studs for the bottom side of the flowtube, with the
centering sleeves, between the pipe flanges.
2. Place the flowtube firmly against the two centering sleeves,
between the flanges.
3. Insert the remaining studs.
4. Install the washers and nuts.
5. Tighten the nuts to the specifications listed in Table 2-2.
Flange Bolts Flowtube sizes and torque values for both Class 150 and Class 300
flanges are listed in Table 2-2. Tighten flange bolts in the incremental
sequence, shown in Figure 2-9.
Always check for leaks at the flanges after tightening the flange
bolts. All flowtubes require a second torquing 24 hours after initial
flange bolt tightening.
TABLE 2-2. Stud Bolt Specifications
for Model 8711 Flowtube.
STEP 4:
GROUNDING
Grounding the flowtube is one of the most important details of flowtube
installation. Proper grounding ensures that only the voltage induced in
the magnetic field of the flowtube is measured. Use Table 2-3 to
determine which grounding option to follow for proper installation.
Attached grounding rings should be grounded equivalently to non-
attached grounding rings.
NOTE
Consult factory for installations requiring cathodic protection or situations
where there are high currents or high potential in the process.
The flowtube case should always be grounded in accordance with
national and local electrical codes. Failure to do so may impair the
protection provided by the equipment. The most effective grounding
method is direct connection to earth ground with minimal impedance.
The Internal Ground Connection (Protective Ground Connection)
located in side the junction box is the Internal Ground Connection
screw. This screw is identified by the ground symbol:
Nominal
Flowtube
Size (inches)
Bolt Torque
Specifications in Foot-Pounds
Class 150 and Class 300 Flanges
0.15
0.30
½
1
1-½
2
3
4
6
8
5
5
5
10
15
25
40
30
50
70

2-9
Installation
TABLE 2-3.
Grounding Installation.
Grounding Options
Type of Pipe No Grounding Options Grounding Rings Grounding Electrodes Lining Protectors
Conductive Unlined Pipe See Figure 2-11 Not Required Not Required See Figure 2-12
Conductive Lined Pipe Insufficient Grounding See Figure 2-12 See Figure 2-11 See Figure 2-12
Non-Conductive Pipe Insufficient Grounding See Figure 2-13 See Figure 2-14 See Figure 2-13
Earth
Ground
8705-0040C
FIGURE 2-11.
No Grounding Options or Grounding
Electrode in Lined Pipe.
Earth
Ground
8705-0038C
Grounding Rings
or
Lining Protectors
FIGURE 2-12.
Grounding with Grounding Rings or
Lining Protectors.

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-10
8705-0038E
Grounding Rings
or
Lining Protectors
Earth
Ground
FIGURE
2-13.
Grounding with Grounding Rings or
Lining Protectors.
Earth
Ground
8705-0040D
FIGURE 2-14.
Grounding with Grounding Electrodes.

2-11
Installation
STEP 5:
WIRING
The conduit connections needed for installation depend on transmitter
location. A conduit run between the flowtube and transmitter is not
required if the transmitter is integrally mounted on the flowtube.
Conduit Ports
and Connections Both the flowtube and transmitter junction boxes have ports for ¾-inch
NPT conduit connections. These connections should be made in
accordance with local or plant electrical codes. Unused ports should be
sealed with metal plugs. Housing damage will result if metal plugs
are overtightened.
Flanged and wafer flowtubes have two conduit ports as shown in
Figures 5-1, 5-2, 5-3, and 6-1. Either one may be used for both the coil
drive and electrode cables. Use the stainless steel plug that is provided
to seal the unused conduit port.
This is a pulsed dc magnetic flowmeter. Series 8700 Flowtubes use a
pulsed-dc signal generated by Model 8712C/U/H or Model 8732C
Magnetic Flowmeter Transmitter. Never connect AC power to the
flowtube; permanent damage to the coils is possible. Never connect AC
power to transmitter terminals 1 and 2; replacement of the transmitter
electronics board will be required.
A single dedicated conduit run for the coil drive and electrode cables is
needed between a flowtube and a remote transmitter. Bundled cables in
a single conduit are likely to create interference and noise problems in
your system. Use one set of cables per conduit run. See Figure 2-15 for
proper conduit installation diagram and Table 2-4 for
recommended cable.
Use wire rated for the proper temperature application. For connections
in ambient temperatures above 140 °F (60 °C), use a wire rated for
176 °F (80 °C). For ambients greater than 176 °F (80 °C), use a wire
rated for 230 °F (110 °C).
This is a pulsed dc
magnetic flowmeter.Do
not connect ac power
to the flowtube or to
terminals 1 and 2 of
the transmitter, or
replacement of the
electronics board will
be necessary.

Rosemount Series 8700 Magnetic Flowmeter Flowtube
2-12
TABLE 2-4.
Cable Requirements.
Remote transmitter installations require equal lengths of signal and
coil drive cables. Integrally mounted transmitters are factory wired and
do not require interconnecting cables.
Lengths from 5 to 1,000 feet (1.5 to 300 meters) may be specified, and
will be shipped with the flowtube.
Cable longer than 100 feet (30 meters) is not recommended for high-
signal magmeter systems.
(1) Combination signal and coil drive cable is not recommended for
high-signal magmeter system.
FIGURE 2-15.
Conduit Preparation.
Coil Drive and
Electrode Cables Coil Drive and
Electrode Cables
Power
Outputs
Power
Outputs
WRONG CORRECT
Power
Outputs
Power
Outputs
8705-0005CDGA, DDGA
Description P/N
Signal Cable (20 AWG)
Belden 8729, Alpha 2442 equivalent 08712-0061-0001
Coil Drive Cable (14 AWG)
Belden 8760, Alpha 2441 equivalent 08712-0060-0001
Combination Signal and Coil
Drive Cable (18 AWG)(1)
Belden 9368 equivalent 08712-0750-0001