Emerson 1700 User Manual

Micro Motion® Model 1700 and 2700

Installation Manual

Installation Manual

20001700, Rev CC

April 2013

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.

Micro Motion customer service

Email

• Worldwide: [e-mail]

• Asia-Pacific: [e-mail]

North and South America Europe and Middle East Asia Pacific

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

Canada [phone] The Netherlands [phone] New Zealand 099 128 804

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

Brazil [phone] Italy 8008 77334 China [phone]

Venezuela [phone] Central & Eastern [phone] Japan [phone]

Russia/CIS [phone] South Korea [phone]

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

Saudia Arabia 800 844 9564

UAE 800 0444 0684

Contents

Contents

Chapter 1 Planning .........................................................................................................................1

1.1 Flowmeter components ................................................................................................................1

1.2 Outputs option identification .......................................................................................................5

1.3 Environmental limits .....................................................................................................................7

1.4 Hazardous area classifications .......................................................................................................7

1.5 Power requirements .....................................................................................................................7

1.6 Orientation ...................................................................................................................................8

1.7 Accessibility for maintenance .......................................................................................................9

Chapter 2 Mounting and sensor wiring for integral installations ...................................................11

2.1 Mounting and sensor wiring .......................................................................................................11

2.2 Rotate the transmitter on the sensor (optional) ..........................................................................11

2.3 Rotate the user interface on the transmitter (optional) ...............................................................12

2.4 Ground the flowmeter components ...........................................................................................14

Chapter 3 Mounting and sensor wiring for 4-wire remote installations .........................................15

3.1 Mounting options .......................................................................................................................15

3.2 Prepare the 4-wire cable .............................................................................................................19

3.3 Wire the transmitter to the sensor ..............................................................................................22

3.4 Rotate the user interface on the transmitter (optional) ...............................................................24

3.5 Ground the flowmeter components ...........................................................................................26

Chapter 4 Mounting and sensor wiring for 9-wire remote installations .........................................29

4.1 Mounting options .......................................................................................................................29

4.2 Prepare the 9-wire cable .............................................................................................................31

4.3 Wire the transmitter to the sensor using jacketed cable ..............................................................37

4.4 Wire the transmitter to the sensor using shielded or armored cable ...........................................40

4.5 Rotate the user interface on the transmitter (optional) ...............................................................45

4.6 Ground the flowmeter components ...........................................................................................47

Chapter 5 Mounting and sensor wiring for remote core processor with remote sensor

installations ..................................................................................................................49

5.1 Mounting options .......................................................................................................................49

5.2 Mount the remote core processor ...............................................................................................53

5.3 Prepare the 4-wire cable .............................................................................................................54

5.4 Wire the transmitter to the remote core processor .....................................................................57

5.5 Prepare the 9-wire cable .............................................................................................................59

5.6 Wire the remote core processor to the sensor using jacketed cable ............................................65

5.7 Wire the remote core processor to the sensor using shielded or armored cable ..........................69

5.8 Rotate the user interface on the transmitter (optional) ...............................................................74

5.9 Ground the flowmeter components ...........................................................................................75

Chapter 6 Wiring the power supply ...............................................................................................77

6.1 Wire the power supply ................................................................................................................77

Chapter 7 I/O wiring for Model 1700 and Model 2700 transmitters with analog outputs ................79

7.1 Basic analog wiring .....................................................................................................................79

7.2 HART/analog single loop wiring ..................................................................................................80

7.3 RS-485 point-to-point wiring ......................................................................................................81

7.4 HART multidrop wiring ...............................................................................................................81

Installation Manual i

Contents

Chapter 8 I/O wiring for Model 1700 and Model 2700 transmitters with intrinsically safe

outputs .........................................................................................................................83

8.1 Safe area mA output wiring .........................................................................................................83

8.2 Safe area HART/analog single-loop wiring ...................................................................................84

8.3 Safe area HART multidrop wiring ................................................................................................ 85

8.4 Safe area frequency output/discrete output wiring .....................................................................86

8.5 Hazardous area wiring ................................................................................................................ 87

Chapter 9 I/O wiring for Model 2700 transmitters with configurable input/outputs ......................95

9.1 Channel configuration ................................................................................................................95

9.2 mA/HART wiring .........................................................................................................................96

9.3 Frequency output wiring .............................................................................................................98

9.4 Discrete output wiring ..............................................................................................................103

9.5 Discrete input wiring ................................................................................................................107

Chapter 10 Specifications ..............................................................................................................109

10.1 Electrical connections ...............................................................................................................109

10.2 Input/output signals .................................................................................................................110

10.3 Local display .............................................................................................................................111

10.4 Environmental limits .................................................................................................................113

10.5 Physical specifications ..............................................................................................................113

Index ................................................................................................................................................117

ii Micro Motion® Model 1700 and 2700

1 Planning

Topics covered in this chapter:

Flowmeter components

•

Outputs option identification

•

Environmental limits

•

Hazardous area classifications

•

Power requirements

•

Orientation

•

Accessibility for maintenance

•

1.1 Flowmeter components

The transmitter is one component of a Micro Motion flowmeter. The other major
component is the sensor.

Planning

1.1.1

A third component, called the core processor, provides additional memory and processing
functions.

Installation types

Model 1700 and Model 2700 transmitters can be installed five different ways, only one of
which applies to your specific installation.

• Integral – The transmitter is mounted directly on the sensor. You do not need to

install the transmitter separately, but you will need to connect power supply and I/O
wiring.

Installation Manual 1

Transmitter

Sensor

Planning

Integral installationFigure 1-1:

• High-temperature flexible conduit – Some high-temperature meters come

preinstalled with a flexible conduit between the sensor and the transmitter. You do
not have to connect any wires between the transmitter and the sensor, but you do
need to mount the electronics separately and connect power and I/O wiring to the
transmitter.

High-temperature flexible conduit installationFigure 1-2:

High-temperature flexible conduit installations use the same installation
instructions as 4-wire remote installations, except that the distance between the
sensor and the electronics is limited by the length of the flexible conduit.

• 4-wire remote – The transmitter is installed remotely from the sensor. You need to

mount the transmitter separately from the sensor, connect a 4-wire cable between
the transmitter and sensor, and connect power and I/O wiring to the transmitter.

2 Micro Motion® Model 1700 and 2700

Sensor

Core processor

Transmitter

4-wire cable

Sensor

Core processor

Transmitter

4-wire cable

Planning

4-wire remote installation – painted aluminum housingFigure 1-3:

4-wire remote installation – stainless steel housingFigure 1-4:

• 9-wire remote – The transmitter and core processor are combined in a single unit

that is installed remotely from the sensor. You need to mount the transmitter/core
processor assembly separately from the sensor, connect a 9-wire cable between the
transmitter/core processor, and connect power and I/O wiring to the transmitter.

Installation Manual 3

Transmitter

Junction box

Sensor

9-wire cable

Planning

9-wire remote installation typeFigure 1-5:

• Remote core processor with remote sensor

– A remote core process with remote
sensor installation separates all three components – transmitter, core processor,
and sensor – all of which are installed separately. A 4-wire cable connects the
transmitter to the core processor, and a 9-wire cable connects the core processor to
the sensor.

4 Micro Motion® Model 1700 and 2700

Core processor

Transmitter

4-wire cable

9-wire cable

Sensor

Junction box

Planning

Remote core processor with remote sensor installation typeFigure 1-6:

1.1.2 Maximum cable lengths

The maximum cable length between flowmeter components that are separately installed
is determined by cable type. See Table 1-1.

Maximum cable lengthsTable 1-1:

Cable type Wire gauge Maximum length

Micro Motion 4-wire Not applicable 1000 ft (300 m)

Micro Motion 9-wire Not applicable 60 ft (20 m)

User-supplied 4-wire VDC 22 AWG (0.35 mm2) 300 ft (90 m)

VDC 20 AWG (0.5 mm2) 500 ft (150 m)

VDC 18 AWG (0.8 mm2) 1000 ft (300 m)

RS-485 22 AWG (0.35 mm2) or
larger

1.2 Outputs option identification

You must know your transmitter's output option to correctly install the transmitter.

1000 ft (300 m)

Installation Manual 5

Transmitter type

Installation type

Output option

Planning

The transmitter's model number is on a tag on the side of the transmitter. You can use the
model number to determine the transmitter's output option. The first four characters are
the transmitter type. The fifth character is the installation type. The eighth character is the
output option. The remaining characters are not relevant to transmitter installation.

Model code identificationFigure 1-7:

Installation types for Model 1700 and Model 2700 transmittersTable 1-2:

Letter Description

R Remote mount 4-wire

I Integral

C Remote mount 9-wire (painted aluminum housing)

B Remote core processor with remote transmitter

M Remote mount 4-wire (stainless steel housing)

P Remote mount 9-wire (stainless steel housing)

Output options for Model 1700 and Model 2700 transmittersTable 1-3:

Letter Description

A Analog outputs – one mA, one frequency, one RS-485

B Configurable I/O channels (default configuration of two mA, one frequency)

C Configurable I/O channels (custom configuration )

D Intrinsically safe analog outputs – two mA, one frequency/discrete

E Intrinsically safe Foundation fieldbus H1 with standard function blocks

G PROFIBUS-PA

N Non-incendive Foundation fieldbus H1 with standard function blcoks

2 WirelessHART – one mA, one frequency, one RS-485

3 WirelessHART – one mA, two configurable I/O channels (custom configura-

tion)

4 Intrinsically safe WirelessHART – two mA, one frequency

6 Micro Motion® Model 1700 and 2700

Output options for Model 1500 and Model 2500 transmittersTable 1-4:

Letter Description

A Analog outputs – one mA, one frequency, one RS-485

B Configurable I/O channels (default configuration of two mA, one frequency)

C Configurable I/O channels (custom configuration )

1.3 Environmental limits

Environmental specificationsTable 1-5:

Type Value

Ambient temperature limits –40 to +140 °F (–40 to +60 °C)

Humidity limits 5 to 95% relative humidity, non-condensing at 140 °F (60 °C)

Vibration limits Meets IEC68.2.6, endurance sweep, 5 to 2000 Hz, 50 sweep cy-

cles at 1.0 g

EMI effects Complies with EMC Directive 2004/108/EC per EN 61326 Indus-

trial

Complies with NAMUR NE-21 (22.08.2007)

Ambient temperature effect on
analog outputs

On mA output: ±0.005% of span per °C

Planning

1.4

1.5

If possible, install the transmitter in a location that will prevent direct exposure to sunlight.
The environmental limits for the transmitter may be further restricted by hazardous area
approvals.

Hazardous area classifications

If you plan to mount the transmitter in a hazardous area:

• Verify that the transmitter has the appropriate hazardous area approval. Each

transmitter has a hazardous area approval tag attached to the transmitter housing.

• Ensure that any cable used between the transmitter and the sensor meets the

hazardous area requirements.

Power requirements

Self-switching AC/DC input, automatically recognizes supply voltage

• 85 to 265 VAC, 50/60 Hz, 6 watts typical, 11 watts maximum

Installation Manual 7

M

= 18V + (R × L × 0.5A)

Planning

• 18 to 100 VDC, 6 watts typical, 11 watts maximum

• Complies with low voltage directive 2006/95/EC per EN 61010-1 (IEC 61010-1) with

amendment 2, and Installation (Overvoltage) Category II, Pollution Degree 2

Note

For DC power:

• Power requirements assume a single transmitter per cable.

• At startup, the power source must provide a minimum of 1.5 amps of short-term current per

transmitter.

• Length and conductor diameter of the power cable must be sized to provide 18 VDC

minimum at the power terminals, at a load current of 0.5 amps.

Cable sizing formulaFigure 1-8:

• M: minimum supply voltage

• R: cable resistance

• L: cable length

Typical power cable resistance at 68 °F (20 °C)Table 1-6:

Wire gauge Resistance

14 AWG

16 AWG

18 AWG

20 AWG

2.5 mm

1.5 mm

1.0 mm

0.75 mm

0.50 mm

2

2

2

2

2

1.6 Orientation

You can mount the transmitter in any orientation as long as the conduit openings do not
point upward.

0.0050 Ω/ft

0.0080 Ω/ft

0.0128 Ω/ft

0.0204 Ω/ft

0.0136 Ω/m

0.0228 Ω/m

0.0340 Ω/m

0.0460 Ω/m

0.0680 Ω/m

8 Micro Motion® Model 1700 and 2700

CAUTION!

Upward-facing conduit openings risk condensation moisture entering the transmitter housing,
which could damage the transmitter.

1.7 Accessibility for maintenance

Mount the flowmeter in a location and orientation that satisfies the following conditions:

• Allows sufficient clearance to open the transmitter housing cover. Micro Motion

recommends 8–10 inches (200–250 mm) clearance at the rear of the transmitter.

• Provides clear access for installing cabling to the transmitter.

Planning

Installation Manual 9

Planning

10 Micro Motion® Model 1700 and 2700

A

B

C

D

Mounting and sensor wiring for integral installations

2 Mounting and sensor wiring for

integral installations

Topics covered in this chapter:

Mounting and sensor wiring

•

Rotate the transmitter on the sensor (optional)

•

Rotate the user interface on the transmitter (optional)

•

Ground the flowmeter components

•

2.1 Mounting and sensor wiring

There are no separate mounting requirements for integral transmitters, and no need to
connect wiring between the transmitter and the sensor.

2.2 Rotate the transmitter on the sensor (optional)

In integral installations, you can rotate the transmitter on the sensor up to 360º in 90º
increments.

Components of an integral transmitterFigure 2-1:

A. Cap screws
B. Transmitter
C. Transition ring
D. Sensor

Installation Manual 11

Mounting and sensor wiring for integral installations

1. Loosen each of the four cap screws (4 mm) that fasten the transmitter to the base.

2. Rotate the transmitter counter-clockwise so that the cap screws are in the unlocked
position.

3. Gently lift the transmitter straight up, disengaging it from the cap screws.

Important

Do not disconnect or damage the wires that connect the transmitter to the core processor.

4. Rotate the transmitter to the desired orientation.

Important

Do not pinch or stress the wires.

The slots on the transition ring should be aligned with the cap screws.

5. Gently lower the transmitter onto the base, inserting the cap screws into the slots.

6. Rotate the transmitter clockwise so that the cap screws are in the locked position.

7. Tighten the cap screws, torquing to 20 to 30 in-lbs (2.3 to 3.4 N-m).

2.3 Rotate the user interface on the transmitter (optional)

The user interface on the transmitter electronics module can be rotated 90º or 180° from
the original position.

12 Micro Motion® Model 1700 and 2700

Mounting and sensor wiring for integral installations

Display componentsFigure 2-2:

A. Transmitter housing
B. Sub-bezel
C. Display module
D. Display screws
E. End-cap clamp
F. Cap screw
G. Display cover

1. Shut off power to the unit.

2. Remove the end-cap clamp by removing the cap screw.

3. Turn the display cover counterclockwise to remove it from the main enclosure.

4. Carefully loosen (and remove if necessary) the semicaptive display screws while

holding the display module in place.

5. Carefully pull the display module out of the main enclosure until the sub-bezel pin

terminals are disengaged from the display module.

Note

If the display pins come out of the board stack with the display module, remove the pins and
reinstall them.

6. Rotate the display module to the desired position.

7. Insert the sub-bezel pin terminals into the display module pin holes to secure the

display in its new position.

8. If you have removed the display screws, line them up with the matching holes on the

sub-bezel, then reinsert and tighten them.

9. Place the display cover onto the main enclosure.

Installation Manual 13

Mounting and sensor wiring for integral installations

10. Turn the display cover clockwise until it is snug.

11. Replace the end-cap clamp by reinserting and tightening the cap screw.

12. Restore power to the transmitter.

2.4 Ground the flowmeter components

In an integral installation, all components are grounded together.

If national standards are not in effect, adhere to the following guidelines for grounding:

• Use copper wire, 14 AWG (2.5 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.

Ground via the piping, if possible (see sensor documentation). If grounding via the piping
is not possible, ground according to applicable local standards using the transmitter’s
internal or external ground screw.

Transmitter internal grounding screwFigure 2-3:

Transmitter external grounding screwFigure 2-4:

14 Micro Motion® Model 1700 and 2700

Mounting and sensor wiring for 4-wire remote installations

3 Mounting and sensor wiring for 4-

wire remote installations

Topics covered in this chapter:

Mounting options

•

Prepare the 4-wire cable

•

Wire the transmitter to the sensor

•

Rotate the user interface on the transmitter (optional)

•

Ground the flowmeter components

•

3.1 Mounting options

3.1.1

There are two options available for mounting the transmitter:

• Mount the transmitter to a wall or flat surface.

• Mount the transmitter to an instrument pole.

Mount the transmitter to a wall

• Use four 5/16-inch diameter (or M8) bolts and nuts that can withstand the process

environment. Micro Motion does not supply bolts or nuts (appropriate bolts and
nuts are available as an option).

• Ensure that the surface is flat and rigid, does not vibrate, or move excessively.

1. If desired, re-orient the transmitter on the mounting bracket.

a. Remove the junction end-cap from the junction housing.

b. Loosen each of the four cap screws (4 mm).

c. Rotate the bracket so that the transmitter is oriented as desired.

d. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).

e. Replace the junction end-cap.

Installation Manual 15

Mounting and sensor wiring for 4-wire remote installations

Figure 3-1:

Components of 4-wire remote mount transmitter (aluminum
housing)

A. End cap
B. Cap screws
C. Transmitter
D. Mounting bracket

16 Micro Motion® Model 1700 and 2700

A

B

D

C

Mounting and sensor wiring for 4-wire remote installations

Figure 3-2:

Components of a 4-wire remote mount transmitter (stainless steel
housing)

A. End cap
B. Cap screws
C. Transmitter
D. Mounting bracket

2. Attach the mounting bracket to the wall.

3.1.2

Mount the transmitter to an instrument pole

• Use two 5/16-inch U-bolts for 2-inch pipe, and four matching nuts, that can

withstand the process environment. Micro Motion does not supply U-bolts or nuts
(appropriate bolts and nuts are available as an option).

• Ensure the instrument pole extends at least 12 inches (305 mm) from a rigid base,

and is no more than 2 inches (50.8 mm) in diameter.

1. If desired, re-orient the transmitter on the mounting bracket.

a. Remove the junction end-cap from the junction housing.

b. Loosen each of the four cap screws (4 mm).

c. Rotate the bracket so that the transmitter is oriented as desired.

d. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).

e. Replace the junction end-cap.

Installation Manual 17

Mounting and sensor wiring for 4-wire remote installations

Figure 3-3:

Components of 4-wire remote mount transmitter (aluminum
housing)

A. End cap
B. Cap screws
C. Transmitter
D. Mounting bracket

18 Micro Motion® Model 1700 and 2700

A

B

D

C

Mounting and sensor wiring for 4-wire remote installations

Figure 3-4:

Components of a 4-wire remote mount transmitter (stainless steel
housing)

A. End cap
B. Cap screws
C. Transmitter
D. Mounting bracket

2. Attach the mounting bracket to an instrument pole.

3.2

Prepare the 4-wire cable

Important

For user-supplied cable glands, the gland must be capable of terminating the drain wires.

Note

If you are installing unshielded cable in continuous metallic conduit with 360º termination shielding,
you only need to prepare the cable – you do not need to perform the shielding procedure.

Installation Manual 19

Mounting and sensor wiring for 4-wire remote installations

4-wire cable preparationFigure 3-5:

Remove the core processor

cover

Cable glands

Micro Motion

cable gland

Pass the wires through the gland nut and clamping insert.

Gland nut

1. Strip 4-1/2 inch (115 mm) of cable jacket.

2. Remove the clear wrap and filler material.

3. Strip all but 3/4 inch (19 mm) of shielding.

Clamping
insert

NPT

Wrap the drain wires twice around the shield and cut off

Gland supplier

Gland type

the excess drain wires.

Cable layout

through the gland.

Terminate the drain

wires inside the

M20

1. Strip 4-1/4 inch (108 mm) of cable jacket.

2. Remove the clear wrap and filler material.

3. Strip all but 1/2 inch (12 mm) of shielding.

User-supplied

cable gland

Pass the wires

gland.

Metal conduit

Run conduit to

sensor

Lay cable in conduit

Done

(do not perform the

shielding procedure)

Drain wires
wrapped around
shield

Go to the shielding

procedure

20 Micro Motion® Model 1700 and 2700

Mounting and sensor wiring for 4-wire remote installations

4-wire cable shieldingFigure 3-6:

From the preparation

procedure

Micro Motion

cable gland

Braided

(armored cable)

Apply the Heat Shrink

1. Slide the shielded heat shrink over the drain wires. Ensure that the
wires are completely covered.

2. Apply heat (250 °F or 120 °C) to shrink the tubing. Do not burn the
cable.

3. Position the clamping insert so the interior end is flush with the braid
of the heat shrink.

Assemble the Gland

1. Fold the shield or braid back over the clamping insert and 1/8 inch
(3 mm) past the O-ring.

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

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

Cable shield

type

Shielded heat
shrink

Foil

(shielded cable)

NPT

Gland supplier

Gland type M20

After heat applied

User-supplied

cable gland

Trim 7 mm from the shielded

heat shrink

Trim

Terminate the shield

and drain wires in the

Assemble the gland

according to vendor

gland

instructions

Shield folded back

Done

Gland body

3.2.1 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 4-wire cable supplied by Micro Motion consists of one pair of red and black 18 AWG
(0.75 mm2) wires for the VDC connection, and one pair of white and green 22 AWG
(0.35 mm2) wires for the RS-485 connection.

User-supplied 4-wire cable must meet the following requirements:

Installation Manual 21

Mounting and sensor wiring for 4-wire remote installations

• 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.

Wire gaugeTable 3-1:

Wire gauge Maximum cable length

VDC 22 AWG (0.35 mm2) 300 ft (90 m)

VDC 20 AWG (0.5 mm2) 500 ft (150 m)

VDC 18 AWG (0.8 mm2) 1000 ft (300 m)

RS-485 22 AWG (0.35 mm2) or larger 1000 ft (300 m)

3.3 Wire the transmitter to the sensor

1. Connect the cable to the core processor as described in the sensor documentation.

2. Feed the wires from the sensor through the conduit opening.

3. Connect wires to the appropriate terminals on the mating connector.

Important

Never ground the shield, braid, or drain wire(s) at the transmitter.

Tip

You may find it easier to unplug the mating connector to connect the wires. If you do so,
remember to firmly reseat the mating connector and tighten the mating connector screws so
that the mating connector cannot accidentally come loose.

22 Micro Motion® Model 1700 and 2700

Mounting and sensor wiring for 4-wire remote installations

Wiring path for transmitters with aluminum housingFigure 3-7:

A. 4-wire cable
B. Mating connector

Installation Manual 23

A

VDC+

VDC–

RS-485A

RS-485B

B

Mounting and sensor wiring for 4-wire remote installations

Wiring path for transmitters with stainless steel housingFigure 3-8:

3.4

A. 4-wire cable
B. Mating connector

Rotate the user interface on the transmitter (optional)

The user interface on the transmitter electronics module can be rotated 90º or 180° from
the original position.

24 Micro Motion® Model 1700 and 2700

Mounting and sensor wiring for 4-wire remote installations

Display componentsFigure 3-9:

A. Transmitter housing
B. Sub-bezel
C. Display module
D. Display screws
E. End-cap clamp
F. Cap screw
G. Display cover

1. Shut off power to the unit.

2. Remove the end-cap clamp by removing the cap screw.

3. Turn the display cover counterclockwise to remove it from the main enclosure.

4. Carefully loosen (and remove if necessary) the semicaptive display screws while
holding the display module in place.

5. Carefully pull the display module out of the main enclosure until the sub-bezel pin
terminals are disengaged from the display module.

Note

If the display pins come out of the board stack with the display module, remove the pins and
reinstall them.

6. Rotate the display module to the desired position.

7. Insert the sub-bezel pin terminals into the display module pin holes to secure the
display in its new position.

8. If you have removed the display screws, line them up with the matching holes on the
sub-bezel, then reinsert and tighten them.

9. Place the display cover onto the main enclosure.

Installation Manual 25

Mounting and sensor wiring for 4-wire remote installations

10. Turn the display cover clockwise until it is snug.

11. Replace the end-cap clamp by reinserting and tightening the cap screw.

12. Restore power to the transmitter.

3.5 Ground the flowmeter components

In 4-wire remote installations, the transmitter and sensor are grounded separately.

CAUTION!

Improper grounding could cause inaccurate measurements or flow meter failure. Failure to
comply with requirements for intrinsic safety in a hazardous area could result in an explosion.

Note

For hazardous area installations in Europe, refer to standard EN 60079-14 or national standards.

If national standards are not in effect, adhere to the following guidelines for grounding:

• Use copper wire, 14 AWG (2.5 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.

1. Ground the sensor according to the instructions in the sensor documentation.

2. Ground the transmitter according to applicable local standards, using the
transmitter’s internal or external ground screw.

Transmitter internal grounding screwFigure 3-10:

26 Micro Motion® Model 1700 and 2700