Micro Motion Micro Motion High Pressure Coriolis Flow Meters Installation Manual

Installation Manual

MMI- 20032352, Rev AD

March 2020

Micro Motion™ High Pressure Coriolis Flow
Meters

Safety messages

Safety messages are provided throughout this manual to protect personnel and equipment. Read each safety message carefully
before proceeding to the next step.

Safety and approval information

This Micro Motion product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EU declaration of conformity for directives that apply to this product. The EU declaration
of conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available
on the internet at www.emerson.com or through your local Micro Motion support center.

Information affixed to equipment that complies with the Pressure Equipment Directive, can be found on the internet at

www.emerson.com.

For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.

Other information

Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the configuration
manual. Product data sheets and manuals are available from the Micro Motion web site at www.emerson.com.

Return policy

Follow Micro Motion procedures when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Micro Motion employees. Micro Motion will not accept
your returned equipment if you fail to follow Micro Motion procedures.

Return procedures and forms are available on our web support site at www.emerson.com, or by phoning the Micro Motion
Customer Service department.

Emerson Flow customer service

Email:

• Worldwide: [e-mail]

• Asia-Pacific: [e-mail]

Telephone:

North and South America

United States 800-522-6277 U.K. and Ireland 0870 240 1978 Australia 800 158 727

Canada [phone] The Netherlands [phone]

Mexico [phone] France [phone]

Argentina [phone] Germany 0800 182 5347 Pakistan 888 550 2682

Brazil [phone] Italy [phone] China [phone]

Chile [phone] Central & Eastern [phone]

Peru [phone] Russia/CIS [phone] South Korea [phone]

Europe and Middle East Asia Pacific

New Zealand 099 128 804

666

India 800 440 1468

901

Japan [phone]

111

Egypt 0800 000 0015 Singapore [phone]

Oman 800 70101 Thailand 001 800 441 6426

Qatar 431 0044 Malaysia 800 814 008

Kuwait 663 299 01

South Africa 800 991 390

Saudi Arabia 800 844 9564

UAE 800 0444 0684

2

Installation Manual Contents

MMI- 20032352 March 2020

Contents

Chapter 1 Before you begin............................................................................................................ 5

1.1 About this document........................................................................................................................5

1.2 Hazard messages..............................................................................................................................5

1.3 Related documentation....................................................................................................................5

Chapter 2 Planning........................................................................................................................ 7

2.1 Installation checklist.........................................................................................................................7

2.2 Best practices................................................................................................................................... 8

2.3 HPC010 vibration limits — vibration broadband random...................................................................8

2.4 HPC015 vibration limits....................................................................................................................8

2.5 Temperature limits...........................................................................................................................9

Chapter 3 Mounting.....................................................................................................................11

3.1 Mount the HPC010 sensor..............................................................................................................11

3.2 Mount the HPC015 sensor..............................................................................................................12

3.3 Mount the enhanced core processor ..............................................................................................13

3.4 Mount the I.S. barrier .....................................................................................................................14

3.5 Attach extended electronics...........................................................................................................15

Chapter 4 Transmitter power and I/O wiring................................................................................ 17

4.1 Options for wiring...........................................................................................................................17

4.2 Connect 4-wire cable......................................................................................................................17

4.3 Connect 9-wire cable......................................................................................................................22

Chapter 5 Grounding....................................................................................................................25

Chapter 6 Purge the sensor case .................................................................................................. 27

Chapter 7 Pressure relief.............................................................................................................. 29

Installation Manual iii

Contents Installation Manual

March 2020 MMI- 20032352

iv Micro Motion HPC

Installation Manual Before you begin

MMI- 20032352 March 2020

1 Before you begin

1.1 About this document

This document provides information on planning, mounting, wiring, and grounding the
HPC sensor.

The information in this document assumes that users understand basic transmitter and
sensor installation, configuration, and maintenance concepts and procedures.

1.2 Hazard messages

This document uses the following criteria for hazard messages based on ANSI standards
Z535.6-2011 (R2017).

DANGER

Serious injury or death will occur if a hazardous situation is not avoided.

WARNING

Serious injury or death could occur if a hazardous situation is not avoided.

CAUTION

Minor or moderate injury will or could occur if a hazardous situation is not avoided.

NOTICE

Data loss, property damage, hardware damage, or software damage can occur if a
situation is not avoided. There is no credible risk of physical injury.

Physical access

NOTICE

Unauthorized personnel can potentially cause significant damage and/or misconfiguration
of end users' equipment. Protect against all intentional or unintentional unauthorized use.

Physical security is an important part of any security program and fundamental to
protecting your system. Restrict physical access to protect users' assets. This is true for all
systems used within the facility.

1.3 Related documentation

You can find all product documentation on the product documentation DVD shipped with
the product or at www.emerson.com.

See any of the following documents for more information:

• The hazardous area approvals documentation shipped with the sensor or available at

www.emerson.com/flowmeasurement.

• Micro Motion High Pressure Coriolis Flow Meters Product Data Sheet

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Before you begin Installation Manual

March 2020 MMI- 20032352

• Micro Motion 9-Wire Flowmeter Cable Preparation and Installation Guide

• The transmitter installation and configuration and use guides

6 Micro Motion HPC

Installation Manual Planning

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2 Planning

2.1 Installation checklist

□ If you plan to mount the meter in a hazardous area:

WARNING

Make sure that the hazardous area specified on the approval tag is suitable for the
environment in which the meter will be installed.

□ Verify that the local ambient and process temperatures are within the limits of the

meter.

□ If the sensor has an integral transmitter, no wiring is required between the sensor and

transmitter. Follow the wiring instructions in the transmitter installation manual for
signal and power wiring.

□ If the transmitter has remote-mounted electronics, follow the instructions in this

manual for wiring between the sensor and the transmitter, and then follow the
instructions in the transmitter installation manual for power and signal wiring.

□ For optimal performance, install the sensor in the preferred orientation. The sensor will

work in any orientation as long as the flow tubes remain full of process fluid.

Table 2-1: Preferred sensor orientation

Process content HPC010 HPC015

Liquids

Self-draining applications

Gases

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Planning Installation Manual

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□ Orient the sensor so that personnel and equipment will not be exposed to escaping

pressurized discharge from the rupture disk. The sensor has a rupture disk to evacuate
the case in the unlikely event of a loss of primary containment.

□ Install the meter so that the flow direction arrow on the sensor case matches the actual

forward flow of the process. (Flow direction is also software-selectable.)

2.2 Best practices

The following information can help you get the most from your sensor.

• There are no pipe run requirements for Micro Motion sensors. Straight runs of pipe

upstream or downstream are unnecessary.

• If the sensor is installed in a vertical pipeline, liquids and slurries should flow upward

through the sensor. Gases should flow downward.

• Keep the sensor full of process fluid.

• For halting flow through the sensor with a single valve, install the valve downstream

from the sensor.

• Minimize bending and torsional piping loads on the meter. Do not use the meter to

align misaligned piping.

• The sensor does not require external supports. The flanges will support the sensor in

any orientation.

2.3 HPC010 vibration limits — vibration broadband random

• 5 to 1,000 Hz; 1.25E-4 g2/Hz per IEC 60068-2-64

• Total: 0.35g RMS

Vibration isolation should be used in installations above 0.35 g RMS or for applications
requiring Lloyd’s approval.

Vibration isolation clamps are available as a spare part. For more information about
mounting a sensor in high vibration environments, contact customer support.

2.4 HPC015 vibration limits

Meets IEC 60068-2-6, endurance sweep, 5 to 2000 Hz up to 1.0 g.

8 Micro Motion HPC

Installation Manual Planning

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2.5 Temperature limits

Model Component Limit

HPC010 Process fluid temperature -58 °F (-50 °C) to 257 °F

(125.0 °C)

Ambient temperature -40 °F (-40.0 °C) to 140 °F

(60.0 °C)

HPC015 Process fluid temperature -50.8 °F (-46 °C) to 392 °F

(200 °C)

Ambient temperature -40 °F (-40.0 °C) to 140 °F

(60 °C)

Notes

• In all cases, the electronics cannot be operated where the ambient temperature is

below -40 °F (-40.0 °C) or above 140 °F (60.0 °C). If a sensor is to be used where the
ambient temperature is outside of the range permissible for the electronics, the
electronics must be remotely located where the ambient temperature is within the
permissible range, as indicated by the shaded area of the temperature limit graphs.

• Temperature limits may be further restricted by hazardous area approvals. Refer to the

hazardous area approvals documentation shipped with the sensor or available from

www.emerson.com/flowmeasurement.

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Planning Installation Manual

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10 Micro Motion HPC

Installation Manual Mounting

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3 Mounting

3.1 Mount the HPC010 sensor

Use your common practices to minimize torque and bending load on process connections.

Tip

To reduce the risk of condensation problems, do not orient transmitters or sensor junction
boxes with their conduit openings pointing upward.

NOTICE

Lifting the sensor by the electronics or rupture disk can damage the device.

Figure 3-1: Mounting the HPC010 sensor

A. Optional: Use the sensor grooves for mounting the sensor.

Notes

• Do not use the sensor to support the piping.

• The sensor does not require external supports. The flanges will support the sensor in

any orientation.

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Mounting Installation Manual

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3.2 Mount the HPC015 sensor

Procedure

1. Mount the sensor.

2. Optional: Use a bracket to mount the HPC015 sensor to a wall.

12 Micro Motion HPC

Installation Manual Mounting

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3.3 Mount the enhanced core processor

Procedure

1. If desired, reorient the core processor housing on the bracket.
a) Loosen each of the four cap screws.

b) Rotate the bracket so that the core processor is oriented as desired.

c) Tighten the cap screws, torquing to 2.2 ft lbf (3 N m) to 3 ft lbf (4 N m).

2. Attach the mounting bracket to an instrument pole or wall. For pipe mount, two

user-supplied U-bolts are required.

Figure 3-2: Pipe mount

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Mounting Installation Manual

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Figure 3-3: Wall mount

3.4 Mount the I.S. barrier

Use this procedure if you are mounting an MVD™ Direct Connect™ I.S. barrier.

Procedure

1. Snap the barrier onto a 1.38 in (35 mm) DIN rail. You can mount it in either

direction.
To remove the barrier from the rail, lift the bottom lock.

2. Hook one end of the end clamp over the DIN rail.

3. Position the end clamp snugly against the barrier.

4. Tighten the screw until the end clamp is securely fastened to the DIN rail.

5. Close the cover and fasten the clamps.

Figure 3-4: Barrier mount on DIN rail

14 Micro Motion HPC

E

D

C

A

B

F

Installation Manual

Mounting

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3.5 Attach extended electronics

If your installation has a sensor with extended electronics, you will need to install the
extender onto the sensor case.

Extended core processors are matched at the factory to specific sensors. Keep each core
processor together with the sensor with which it was shipped.

NOTICE

Keep the extender and feedthrough clean and dry. Moisture or debris in the extender or
feedthrough can damage electronics and result in measurement error or flowmeter
failure.

Procedure

1. Remove and recycle the plastic cap from the feedthrough on the sensor.

A. Transmitter or core processor
B. Extender
C. O-ring

D. Feedthrough

E. Clamping ring
F. Clamping screw

2. Loosen the clamping screw and remove the clamping ring. Leave the O-ring in place

on the feedthrough.

3. Remove and recycle the plastic plug from the extender.

4. Fit the extender onto the feedthrough by carefully aligning the notches on the

Installation Manual 15

bottom of the extender with the notches on the feedthrough.

5. Close the clamping ring and tighten the clamping screw to 13 in lbf (1.47 N m) to

18 in lbf (2.03 N m).

Mounting Installation Manual

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16 Micro Motion HPC

Installation Manual Transmitter power and I/O wiring

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4 Transmitter power and I/O wiring

4.1 Options for wiring

The wiring procedure you follow depends on which electronics option you have.

Table 4-1: Wiring procedures by electronics option

Electronics option Wiring procedure

Integral transmitter The transmitter is already connected to the sensor. No wiring is

required between sensor and transmitter. See the transmitter
installation manual for wiring the power and signal cable to the
transmitter.

Extended electronics The electronics are separated from the sensor by an extender and

must be attached as described in Attach extended electronics.
There is no wiring required because the physical connection
includes the electrical connection.

MVD™ Direct Connect

™

There is no transmitter to wire. See the Micro Motion MVD Direct
Connect Meters manual for wiring the power and signal cable
between the sensor and the direct host. Refer to Connect power

to the I.S. barrier.

Integral core processor with
remote transmitter

WARNING

Make sure the hazardous area specified on the sensor approval tag is suitable for the
environment in which the sensor will be installed. Failure to comply with the
requirements for intrinsic safety in a hazardous area could result in an explosion
resulting in injury or death.

NOTICE

Fully close and tighten all housing covers and conduit openings. Improperly sealed
housings can expose electronics to moisture, which can cause measurement error or
flowmeter failure. Inspect and grease all gaskets and O-rings.

The core processor is already connected to the sensor. Connect a
4-wire cable between the core processor and transmitter. Refer
to Connect the wires to the core processor terminals.

4.2 Connect 4-wire cable

4.2.1 4-wire cable types and usage

Micro Motion offers two types of 4-wire cable: shielded and armored. Both types contain
shield drain wires.

The cable supplied by Micro Motion consists of one pair of red and black 18 AWG
(0.823 mm²) wires for the VDC connection, and one pair of white and green 22 AWG
(0.326 mm²) wires for the RS-485 connection.

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User-supplied cable must meet the following requirements:

• Twisted pair construction.

• Applicable hazardous area requirements, if the core processor is installed in a

hazardous area.

• Wire gauge appropriate for the cable length between the core processor and the

transmitter, or the host.

Wire gauge Maximum cable length

VDC 22 AWG (0.326 mm²) 300 ft (91 m)

VDC 20 AWG (0.518 mm²) 500 ft (152 m)

VDC 18 AWG (0.823 mm²) 1,000 ft (305 m)

RS-485 22 AWG (0.326 mm²) or larger 1,000 ft (305 m)

4.2.2 Maximum cable lengths

Table 4-2: Maximum lengths for Micro Motion cable

Cable type To transmitter Maximum length

Micro Motion 9-wire All other MVD transmitters 60 ft (18 m)

Micro Motion 4-wire All 4-wire MVD transmitters • 1,000 ft (305 m) without

Table 4-3: Maximum lengths for user-supplied 4-wire cable

Wire function Wire size Maximum length

Power (VDC) 22 AWG (0.326 mm²) 300 ft (91 m)

20 AWG (0.518 mm²) 500 ft (152 m)

18 AWG (0.823 mm²) 1,000 ft (305 m)

Signal (RS-485) 22 AWG (0.326 mm²) or larger 1,000 ft (305 m)

4.2.3 Prepare a cable with a metal conduit

Procedure

Ex-approval

• 500 ft (152 m) with IIC

rated sensors

• 1,000 ft (305 m) with IIB

rated sensors

1. Remove the core processor cover using a flat-blade screw driver.

2. Run the conduit to the sensor.

3. Pull the cable through the conduit.

4. Cut the drain wires and let them float at both ends of the conduit.

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Installation Manual Transmitter power and I/O wiring

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4.2.4 Prepare a cable with user-supplied cable glands

Procedure

1. Remove the core processor cover using a flat-blade screw driver.

2. Pass the wires through the gland.

3. Terminate the shield and drain wires inside the gland.

4. Assemble the gland according to vendor instructions.

4.2.5 Prepare a cable with Micro Motion-supplied cable glands

Procedure

1. Remove the core processor cover using a flat-blade screw driver.

2. Pass the wires through the gland nut and clamping insert.

A. Gland nut
B. Clamping insert

3. Strip the cable jacket.

Option

NPT gland type Strip 4.5 in (114 mm)

M20 gland type Strip 4.25 in (108 mm)

4. Remove the clear wrap and filler material.

5. Strip most of the shielding.

Option

NPT gland type Strip all but 0.75 in (19 mm)

M20 gland type Strip all but 0.5 in (13 mm)

6. Wrap the drain wires twice around the shield and cut off the excess drain wires.

Description

Description

A. Drain wires wrapped around shield

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7. For foil (shielded cable) only:

Note

For braided (armored cable) skip this step and contine to the next step.

Option Description

NPT
gland
type

M20
gland
type

a. Slide the shielded heat shrink over the drain wires. Ensure that the

wires are completely covered.

b. Apply 250 °F (121.1 °C) heat to shrink the tubing. Do not burn the

cable.

c. Position the clamping insert so the interior end is flush with the

braid of the heat shrink.

A. Shielded heat shrink
B. After heat is applied

Trim 0.3 in (8 mm).

A. Trim

8. Assemble the gland by folding the shield or braid back over the clamping insert and

0.125 in (3 mm) past the O-ring.

A. Shield folded back

9. Install the gland body into the conduit opening on the core processor housing.

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Installation Manual Transmitter power and I/O wiring

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10. Insert the wires through the gland body and tighten the gland nut onto the gland
body.

A. Shield folded back
B. Gland body

4.2.6 Connect the wires to the core processor terminals

After the 4-wire cable has been prepared and shielded (if required), connect the individual
wires of the 4-wire cable to the terminals on the core processor.

Procedure

1. Connect the wires to the core processor terminals.

2. Reinstall the core processor cover.

3. Torque the cover screws to:

• For aluminum housing: 10 in lbf (1.13 N m) to 13 in lbf (1.47 N m)

• For stainless steel housing: minimum 19 in lbf (2.15 N m)

If properly seated, there will be no gap between cover and base.

4. Connect the wires to the transmitter terminals using the transmitter installation
manual.

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4.3 Connect 9-wire cable

4.3.1 Connect the 9-wire cable

Procedure

1. Prepare and install the cable according to the instructions in the Micro Motion 9-Wire
Flowmeter Cable Preparation and Installation Guide.

2. Insert the stripped ends of the individual wires into the terminal blocks of the
junction box. Ensure that no bare wires remain exposed.

3. Match the wires color for color. For wiring at the transmitter or remote core
processor, refer to the transmitter documentation.

4. Tighten the screws to hold the wires in place.

5. Ensure integrity of gaskets, then tightly close and seal the junction box cover and all
housing covers.

6. Refer to the transmitter installation manual for signal and power wiring
instructions.

4.3.2

4.3.3

Connect the 9-wire cable on a remote enhanced core processor

Procedure

1. Insert the stripped ends of the individual wires into the terminal blocks. Ensure that
no bare wires remain exposed.

2. Match the wires color for color.

3. Tighten the screws to hold the wires in place.

4. Ensure integrity of gaskets, then tightly close and seal all housing covers.

Wire the MVD Direct Connect I.S. barrier

Procedure

Connect the core processor to the barrier:

a) Connect the RS-485 wires from the core processor to the I.S. RS-485 terminals at

the barrier (terminals 43 and 44), matching A and B. See the following table and
figure.

b) Connect the power supply wires from the core processor to the I.S. VDC terminals

at the barrier (terminals 42 and 41), matching positive and negative (+ and –). Do
not terminate the shields at the barrier. See the following table and figure.

Function

RS-485 A 3 43

RS-485 B 4 44

22 Micro Motion HPC

Core processor terminals Barrier I.S. terminals

Installation Manual Transmitter power and I/O wiring

MMI- 20032352 March 2020

Function Core processor terminals Barrier I.S. terminals

VDC + 1 42

VDC – 2 41

c) Connect the RS-485 wires to the non-I.S. RS-485 terminals at the barrier (terminals

13 and 14). These wires will be used in the next step to connect the barrier to the
remote host. Do not terminate the shields at the barrier.

d) Connect the power supply wires to the non-I.S. VDC terminals at the barrier

(terminals 11 and 12). These wires will be used in the next step to connect the
barrier to the power supply.

Figure 4-1: Barrier terminals

4.3.4

A. I. S. terminals for connection to the core processor
B. Non I.S. terminals for connection to remote host and power supply

Connect power to the I.S. barrier

• You can connect multiple MVD Direct Connect installations to a single power supply, as

long as each installation receives sufficient power.

• For power supply to I.S. barrier connections, the power supply can be used to power

other equipment.

Procedure

Connect the power supply wires between the enhanced core processor and the barrier,
matching positive and negative (+ and –).

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Figure 4-2: Barrier terminals

A. I.S. terminals for connection to enhanced core processor

B. Non I.S. terminals for connection to remote host and power supply

24 Micro Motion HPC

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Grounding

5 Grounding

The meter must be grounded according to the standards that are applicable at the site.
The customer is responsible for knowing and complying with all applicable standards.

Prerequisites

Use the following guides for grounding practices:

• In Europe, IEC 60079-14 is applicable to most installations, in particular sections

16.2.2.3 and 16.2.2.4.

• In the U.S.A. and Canada, ISA 12.06.01 Part 1 provides examples with associated

applications and requirements.

If no external standards are applicable, follow these guidelines to ground the sensor:

• Use copper wire, 14 AWG (2.08 mm²) or larger wire size.

• Keep all ground leads as short as possible, less than 1 Ω impedance.

• Connect ground leads directly to earth, or follow plant standards.

NOTICE

Ground the flowmeter to earth, or follow ground network requirements for the facility.
Improper grounding can cause measurement error.

Procedure

• Check the joints in the pipeline.

• If the joints in the pipeline are ground-bonded, the sensor is automatically

grounded and no further action is necessary (unless required by local code).

• If the joints in the pipeline are not grounded, connect a ground wire to the

grounding screw located on the sensor electronics.

Tip

The sensor electronics may be a transmitter, core processor, or junction box. The
grounding screw may be internal or external.

A. Grounding screw

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Grounding Installation Manual

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26 Micro Motion HPC

Installation Manual Purge the sensor case

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6 Purge the sensor case

Prerequisites

Make sure the following are available before beginning the purge procedure:

• Teflon™ tape

• Argon or nitrogen gas sufficient to purge the sensor case

Whenever a purge plug is removed from the sensor case, you must purge the case again.

Procedure

1. Shut down the process, or set control devices for manual operation.

NOTICE

Before performing the case purging procedure, shut down the process or set the
control devices for manual operation. Performing the purge procedure while the
flowmeter is operating could affect measurement accuracy, resulting in inaccurate
flow signals.

2. Remove both purge plugs from the sensor case. If purge lines are being used, open

the valve in the purge lines.

WARNING

• If a rupture disk has been installed on the purge fitting, stay clear of the

rupture disk pressure relief area. High-pressure fluid escaping from the sensor
can cause severe injury or death. Orient the sensor so that personnel and
equipment will not be exposed to any discharge along the pressure relief path.

• Take all necessary precautions when removing purge plugs. Removing a purge

plug compromises the secondary containment of the sensor and could expose
the user to process fluid.

• Improper pressurization of the sensor case could result in injury.

NOTICE

If a rupture disk has been installed on the purge fitting, use thread protectors when
removing the purge fitting so as not to damage the disk membrane surrounding
the rupture disk.

3. Prepare the purge plugs for reinstallation by wrapping them with 2–3 turns of
Teflon tape.

4. Connect the supply of nitrogen or argon gas to the inlet purge connection or open
inlet purge line. Leave the outlet connection open.

NOTICE

• Exercise caution to avoid introducing dirt, moisture, rust, or other contaminants

into the sensor case.

• If the purge gas is heavier than air (such as argon), locate the inlet lower than the

outlet, so that the purge gas will displace air from bottom to top.

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Purge the sensor case Installation Manual

March 2020 MMI- 20032352

• If the purge gas is lighter than air (such as nitrogen), locate the inlet higher than

the outlet, so that the purge gas will displace air from top to bottom.

5. Make sure that there is a tight seal between the inlet connection and sensor case, so
that air cannot be drawn by suction into the case or purge line during the purging
process.

6. Run purge gas through the sensor.

The purge time is the amount of time required for full exchange of atmosphere to
inert gas. The larger the line size, the greater amount of time is required to purge
the case. If purge lines are being used, increase the purge time to fill the additional
volume of the purge line.

Important

Keep the purge gas pressure below 7.25 psi (0.5 bar).

7. At the appropriate time, shut off the gas supply, then immediately seal the purge
outlet and inlet connections with the purge plugs.

Avoid pressurizing the sensor case. If pressure inside the case elevates above
atmospheric pressure during operation, the flowmeter density calibration will be
inaccurate.

8. Make sure that the purge fitting seals are tight so that air cannot be drawn by
suction into the sensor case.

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Installation Manual Pressure relief

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7 Pressure relief

HPC sensors are available with a rupture disk installed on the case. Rupture disks vent
process fluid from the sensor case in the unlikely event of a flow tube breach. Some users
connect a pipeline to the rupture disk to help contain escaping process fluid. For more
information about rupture disks, contact customer service.

If the sensor has a rupture disk, keep it installed at all times as it would otherwise be
necessary to re-purge the case. If the rupture disk is activated by a tube breach, the seal in
the rupture disk will be broken, and the Coriolis meter should be removed from service.

Figure 7-1: Rupture disk on the HPC010

A. Rupture disk

Figure 7-2: Rupture disk on the HPC015

A. Rupture disk

Installation Manual 29

Pressure relief Installation Manual

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WARNING

• Orient the sensor so that personnel and equipment will not be exposed to any

discharge along the pressure relief path.

• Stay clear of the rupture disk pressure relief area. High-pressure fluid escaping from

the sensor can cause severe injury or death.

Important

If using a rupture disk, the housing can no longer assume a secondary containment
function.

NOTICE

Removing the purge fitting, blind plug, or rupture disks compromises the Ex-i Safety
Certification, the Ex-tc Safety Certification, and the IP-rating of the Coriolis meter. Any
modification to the purge fitting, blind plug, or rupture disks must maintain a minimum of
IP66/IP67 Ratings.

30 Micro Motion HPC

Installation Manual

MMI- 20032352 March 2020

Installation Manual 31

*MMI- 20032352*

MMI- 20032352

Rev. AD

2020

Micro Motion Inc. USA

Worldwide Headquarters
7070 Winchester Circle
Boulder, Colorado USA 80301
T [phone]
T [phone]
F [phone]

www.emerson.com

Micro Motion Asia

Emerson Automation Solutions
1 Pandan Crescent
Singapore 128461
Republic of Singapore
T [phone]
F [phone]

©

2020 Micro Motion, Inc. All rights reserved.

The Emerson logo is a trademark and service mark of Emerson Electric Co. Micro Motion, ELITE,
ProLink, MVD and MVD Direct Connect marks are marks of one of the Emerson Automation
Solutions family of companies. All other marks are property of their respective owners.

Micro Motion Europe

Emerson Automation Solutions
Neonstraat 1
6718 WX Ede
The Netherlands
T [phone]
T [phone]
F [phone]

www.emerson.com/nl-nl

Micro Motion United Kingdom

Emerson Automation Solutions
Emerson Process Management Limited
Horsfield Way
Bredbury Industrial Estate
Stockport SK6 2SU U.K.
T [phone]
F [phone]