Micro MotionTM

Micro Motion® Model 1700 and 2700 TransmittersInstallation Instructions

Quick Reference GuideP/N 3600758, Rev. EJune 2003

For online technical support, use the EXPERT2� system at www.expert2.com. To speak to a customer service representative, call the support center nearest you:� In the U.S.A., phone 1-800-522-MASS

(1-800-522-6277)� In Canada and Latin America, phone

(303) 530-8400� In Asia, phone (65) 6770-8155� In the U.K., phone 0800 - 966 180 (toll-free)� Outside the U.K., phone +31 (0) 318 495 67

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BEFORE YOU BEGIN

This quick reference guide explains basic installation guidelines for Micro Motion® Model 1700 and 2700 transmitters. For more information, refer to the instruction manual shipped with the transmitter.

This quick reference guide does not provide answers to all possible questions about transmitter installation. This quick reference does not provide instructions for explosion-proof, flameproof, or intrinsically safe (I.S.) installations. For information on hazardous applications, refer to Micro Motion UL, CSA, or ATEX installation instructions.

This quick reference does not provide instructions for transmitter configuration, maintenance, or service. For complete transmitter instructions, refer to the instruction manual shipped with the transmitter.

European installations

This Micro Motion product complies with all applicable European directives when properly installed in accordance with the instructions in this quick reference guide. Refer to the EC declaration of conformity for directives that apply to this product.

WARNING

Improper installation in a hazardous area can cause an explosion.

For information about hazardous applications, refer to Micro Motion UL, CSA, or ATEX installation instructions, shipped with the transmitter or available from the Micro Motion web site.

2003, Micro Motion, Inc. All rights reserved. Micro Motion is a registered trademark of Micro Motion, Inc. The Micro Motion and Emerson logos are trademarks of Emerson Electric Co. All other trademarkes are property of their respective owners.

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STEP 1. Choosing a location

Choose a location for the transmitter based on the requirements described below.

Environmental requirements

Install the transmitter where ambient temperature is between –40 and 140°F (–40 and 60°C).

For possible further restrictions based on the specific area approval, see the installation manual that was shipped with the sensor.

Wire distances and typesPower source

Connect to a voltage source of 18-100 VDC or 85-265 VAC.

• The transmitter automatically recognizes the source voltage.

• Install up to 1000 feet (300 meters) of 18 AWG (0,8 mm2) or larger wire. At distances approaching 1000 feet, a minimum DC input of 22 V is required.

Sensor-mounted core processor to remote mount transmitter

• Install up to 300 feet (90 meters) of 22 AWG (0,35 mm2) or up to 1000 feet (300 meters) of 18 AWG (0,8 mm2) 4-wire twisted-pair instrument cable.

WARNING

Hazardous voltage can cause severe injury or death.

Make sure power is disconnected before installing transmitter.

CAUTION

Improper installation could cause measurement error or flowmeter failure.

Follow all instructions to ensure transmitter will operate correctly.

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Sensor junction box to remote transmitter / core processor assembly

• Install up to 60 feet (20 meters) of Micro Motion 9-wire cable.

Location considerations

Select a location for the transmitter where:

• The transmitter is easily accessible for service

• The display is upright and visible (if the transmitter is equipped with a display)

Hazardous area installations

To comply with requirements for an intrinsically safe (I.S.) installation, you must use a Micro Motion I.S. installation manual when installing the transmitter in a hazardous area. An I.S. installation manual is shipped with an approved transmitter.

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

For a complete list of hazardous area classifications for Micro Motion transmitters, refer to the Expert 2 system at www.expert2.com.

STEP 2. Installing the remote-mount transmitter

If you are installing an integrally mounted transmitter, this step is not necessary. Skip to Step 3.

If you are installing a remote-mount transmitter, follow the procedure in Remote-mount transmitter.

If you are installing a remote transmitter / core processor assembly, follow the procedure in Remote transmitter / core processor assembly.

Remote-mount transmitterThe following procedure assumes that you are installing a remote-mount transmitter, with the core processor mounted on the sensor.

1. Identify the components shown in Figure 1 and Figure 2.

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

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Figure 1. Remote-mount transmitter components

Figure 2. Remote-mount transmitter, junction end-cap removed (bottom view)

Main enclosure

Bracket

Junction end-cap

Mating connector

Mating connector socket

Junction housing

Ground screw

Ground lug Conduit opening for sensor interface

Hex bolts

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3. If desired, re-orient the transmitter on the bracket.

a. Loosen each of the four hex bolts (4 mm) in the junction housing three or four turns.

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

c. Tighten hex bolts, torquing to 30-38 in-lb (3-4 N-m).

4. Securely mount the bracket and transmitter to a panel or instrument pole. The transmitter can be mounted in any orientation as long as the conduit openings do not point upward.

5. Use one of these methods to shield the wiring from the core processor to the transmitter:

• If you are installing unshielded wiring in continuous metallic conduit that provides 360° termination shielding for the enclosed wiring, go to Step 11, page 8.

• If you are installing a user-supplied cable gland with shielded cable or armored cable, terminate the shields in the cable gland. Terminate both the armored braid and the shield drain wires in the cable gland. Go to Step 11, page 8.

CAUTION

Condensation or excessive moisture entering the transmitter could damage the transmitter and result in measurement error or flowmeter failure.

• Ensure integrity of gaskets and O-rings.• Do not mount the transmitter with the conduit openings

pointing upward.• Install drip legs in conduit or cable.

• Seal all conduit openings.• Fully tighten the transmitter cover.

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• If you are installing a Micro Motion-supplied cable gland at the core processor housing:

- Prepare the cable and apply shielded heat shrink to the cable as described below. The shielded heat shrink provides a shield termination suitable for use in the gland when using cable whose shield consists of foil and not a braid. Proceed to Step 6.

- With armored cable, where the shield consists of braid, prepare the cable as described below, but do not apply heat shrink. Proceed to Step 6.

6. Remove the cover from the core processor.

7. Slide the gland nut and the clamping insert over the cable.

8. For connection at the core processor housing, prepare shielded cable as follows (for armored cable, omit steps d, e, f, and g):

a. Strip 4 1/2 inches (114 mm) of cable jacket.

b. Remove the clear wrap that is inside the cable jacket, and remove the filler material between the wires.

c. Remove the foil shield that is around the insulated wires, leaving 3/4 inch (19 mm) of foil or braid and drain wires exposed, and separate the wires.

d. Wrap the shield drain wire(s) around the exposed foil twice. Cut off the excess wire.

4 1/2 in(114 mm)

3/4 in(19 mm)

7/8 in (22 mm) 7/8 in

(22 mm)Shielded

heat shrink

Gland body

Gland nut Gland clamping insert

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e. Place the shielded heat shrink over the exposed shield drain wire(s). The tubing should completely cover the drain wires.

f. Without burning the cable, apply heat (250 °F or 120 °C) to shrink the tubing.

g. Position gland clamping insert so the interior end is flush with the heat shrink.

h. Fold the cloth shield or braid and drain wires over the clamping insert and approximately 1/8 inch (3 mm) past the O-ring.

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

Shield drain wire(s) wrapped twice around exposed shield foil

Shielded heat shrink completely covers exposed drain wires

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10. Insert the wires through the gland body and assemble the gland by tightening the gland nut.

11. Identify the wires in the 4-wire cable. The 4-wire cable supplied by Micro Motion consists of one pair of 18 AWG (0,75 mm2) wires (red and black), which should be used for the VDC connection, and one pair of 22 AWG (0,35 mm2) wire (green and white), which should be used for the RS-485 connection. Connect the four wires to the numbered slots on the core processor, matching corresponding numbered terminals on the transmitter’s mating connector.

Power supply + (Redwire)

Power supply –(Black wire)

RS-485A (White wire)

RS-485B (Green wire)

Core processor housing internal ground screw• For connections to earth ground when core processor cannot be grounded via

sensor piping and local codes require ground connections to be made internally• Do not connect shield drain wires to this terminal

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12. Reattach the core processor cover.

13. At the transmitter:

a. Pull the mating connector out of the junction housing.

b. Pass the cable end through the conduit opening in the junction housing.

c. Connect the four wires from the core processor to terminals 1–4 on the transmitter’s mating connector. Do not ground the shield or the shield drain wire(s).

d. Plug the wired connector into the socket in the junction housing.

e. Reattach the junction end-cap, tightening until O-ring seats.

r

WARNING

Twisting the core processor will damage the sensor.

Do not twist the core processor.

Core processor terminals 4-wire cable Mating connector (transmitter)

Maximum cable length: see Wire distances and types

VDC+(Red)

VDC–(Black)

RS485B(Green)

RS485A(White)

VDC+VDC–

RS485ARS485B

User-supplied or factory-supplied cable

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Remote transmitter / core processor assembly

The following procedure assumes that you are installing a remote-mount transmitter / core processor assembly.

1. Identify the components shown in Figure 3.

Figure 3. Transmitter / core processor assembly exploded view

2. Attach the mounting bracket to an instrument pole or wall.

3. Remove the lower conduit ring and the end-cap from the bottom of the transmitter and core processor assembly.

4. Place the transmitter and core processor assembly onto the mounting bracket.

5. Replace the lower conduit ring, clamping the mounting bracket between the core processor and the conduit ring as shown in Figure 3.

6. Connect the transmitter end of a Micro Motion 9-wire flowmeter cable to the underside of the core processor. Refer to the manual shipped with the cable for flowmeter cable preparation and wiring instructions.

7. Replace the end cap on the conduit ring.

Lower conduit ring

End cap

Mounting bracket

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STEP 3. Power source and output wiring

Make wiring connections to the power-source and output terminals indicated on the label inside the cover of the transmitter’s wiring-terminal compartment.

Power-source wiring• For power-source wiring distances and types, see Step 1.

• Connect power-supply wiring to the power-supply wiring terminals as shown in Figure 4. Terminal 9 is neutral or minus, terminal 10 is line or positive.

• A switch may be installed in the power-source line. For compliance with low-voltage directive 73/23/EEC, a switch in close proximity to the transmitter is required.

Figure 4. Power-supply wiring terminals

Output wiring

For output wiring terminations, see the label inside the terminal cover of the transmitter.

9 10

Equipmentground

85-265 VAC 50/60 Hz N L

18-100 VDC – +

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STEP 4. Grounding the transmitter

Ground the sensor and transmitter independently.

The transmitter is grounded by means of a ground screw on the outside of the transmitter housing. If national standards are not in effect, adhere to these transmitter grounding guidelines:

• Use copper wire, 14 AWG (2,5 mm2) or larger wire size, for grounding.

• Keep all ground leads as short as possible.

• Ground leads must have less than 1 ohm impedance.

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

WARNING

Improper grounding could cause measurement error.

To reduce the risk of measurement error:

• Ground the flowmeter to earth, or follow ground network requirements for the facility.

• For installation in an area that requires intrinsic safety, refer to Micro Motion UL, CSA, or ATEX installation instructions.

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

Micro MotionTM

Micro Motion EuropeEmerson Process ManagementWiltonstraat 303905 KW VeenendaalThe NetherlandsT +31 (0) 318 495 670F +31 (0) 318 495 689

Micro Motion United KingdomEmerson Process Management LimitedHorsfield WayBredbury Industrial EstateStockport SK6 2SU U.K.T 0800 966 180F 0800 966 181

Micro Motion JapanEmerson Process ManagementShinagawa NF Bldg. 5F1-2-5, Higashi ShinagawaShinagawa-kuTokyo 140-0002 JapanT (81) 3 5769-6803F (81) 3 5769-6843

Micro Motion AsiaEmerson Process Management1 Pandan CrescentSingapore 128461Republic of SingaporeT (65) 6777-8211F (65) 6770-8003

©2003, Micro Motion, Inc. All rights reserved. P/N 3600758, Rev. E

*3600758*

Visit us on the Internet at www.micromotion.com

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