Rosemount 702 Wireless Discrete Transmitter Owner's manual

Brand: Rosemount

Model: 702 Wireless Discrete Transmitter

Category: Gateways/controllers

Type: Owner's manual

www.rosemount.com

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702 Wireless Discrete

Transmitter

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

www.rosemount.com

Rosemount 702 Wireless

Discrete Transmitter

Rosemount 702 Wireless Temperature Transmitter may be protected by one or more U.S.

Patents pending. Other foreign patents pending.

Rosemount 702 Hardware Revision

HART

Device Revision

Field Communicator Field Device Revision

Dev v1, DD v4

NOTICE

Read this manual before working with the product. For personal and system safety, and for

optimum product performance, make sure to thoroughly understand the contents before

installing, using, or maintaining this product.

The United States has two toll-free assistance numbers and one international number.

Customer Central

1-800-999-9307 (7:00 a.m. to 7:00 P.M. CST)

National Response Center

1-800-654-7768 (24 hours a day)

Equipment service needs

International

1-(952) 906-8888

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.

For information on Rosemount nuclear-qualified products, contact a Emerson Process

Management Sales Representative.

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

The battery pack with the wireless unit contains two “C” size primary

lithium/thionyl chloride batteries. Each battery contains approximately 2.5

grams of lithium, for a total of 5 grams in each pack. Under normal conditions,

the battery materials are self-contained and are not reactive as long as the

batteries and the pack integrity are maintained. Care should be taken to

prevent thermal, electrical or mechanical damage. Contacts should be

protected to prevent premature discharge.

Battery hazards remain when cells are discharged.

Batteries should be stored in a clean and dry area. For maximum battery life,

storage temperature should not exceed 30° C.

Explosions could result in death or serious injury:

Installation of this transmitter in an explosive environment must be in accordance

with the appropriate local, national, and international standards, codes, and

practices. Please review the approvals section of the 702 reference manual for any

restrictions associated with a safe installation.

• Before connecting a Field Communicator in an explosive atmosphere, ensure the

instruments are installed in accordance with intrinsically safe or non-incendive

field wiring practices.

Process leaks may cause harm or result in death.

• Install and tighten process connectors before applying pressure.

Electrical shock can result in death or serious injury.

• Avoid contact with the leads and terminals. High voltage that may be present on

leads can cause electrical shock.

NOTICE

The Rosemount 702 and all other wireless devices should be installed only after the

1420 Wireless Gateway has been installed and is functioning properly. Wireless devices

should also be powered up in order of proximity from the 1420 Wireless Gateway,

beginning with the closest. This will result in a simpler and faster network installation.

NOTICE

Shipping considerations for wireless products (Lithium Batteries):

The unit was shipped to you without the battery installed. Please remove the battery pack

from the unit prior to shipping.

Primary lithium batteries are regulated in transportation by the U. S. Department of

Transportation, and are also covered by IATA (International Air Transport Association),

ICAO (International Civil Aviation Organization), and ARD (European Ground

Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure

compliance with these or any other local requirements. Please consult current regulations

and requirements before shipping.

Reference Manual

00809-0100-4702, Rev AA

September 2007

TOC-1

Rosemount 702

Table of Contents

Shipping considerations for wireless products (Lithium Batteries): 0-2

SECTION 1

Overview

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

SECTION 2

Configuration

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Switch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Device Sensor Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Device Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

HART Menu Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Fast Key Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Remove Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

SECTION 3

Mounting

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Direct Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Remote Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Ground the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

SECTION 4

Commissioning

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Verify Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

SECTION 5

Operation and

Maintenance

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

LCD Screen Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Startup Screen Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Diagnostic Button Screen Sequence . . . . . . . . . . . . . . . . . . . . . . . 5-3

Network Diagnostic Status Screens . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Device Diagnostic Screens. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Reference Manual

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September 2007

Rosemount 702

TOC-2

APPENDIX A

Specifications and

Reference Data

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Notes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

APPENDIX B

Product Certifications

Approved Manufacturing Locations . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1

European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Telecommunication Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Ordinary Location Certification for FM . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Hazardous Locations Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

www.rosemount.com

Section 1 Overview

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-2

Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-3

Return of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1-5

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that

potentially raises safety issues is indicated by a warning symbol ( ). Please

refer to the following safety messages before performing an operation

preceded by this symbol.

Warnings

Failure to follow these installation guidelines could result in death or

serious injury.

• Make sure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

• Before connecting a 375 Field Communicator in an explosive atmosphere, make

sure the instruments are installed in accordance with intrinsically safe or

non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the

appropriate hazardous locations certifications.

Process leaks could result in death or serious injury.

• Do not remove the thermowell while in operation.

• Install and tighten thermowells and switches before applying pressure

Electrical shock could cause death or serious injury.

• Use extreme caution when making contact with the leads and terminals.

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

1-2

OVERVIEW

Manual This manual is designed to assist in the installation, operation, and

maintenance of Rosemount 702.

Section 1: Overview

• Manual and Transmitter Overview

• Considerations

• Return of Materials

Section 2: Configuration

• Device switch Configuration

• Device Network Configuration

Section 3: Mounting

• Mount the switch

• Switch Assembly/Leads

• Grounding

• LCD Rotation

Section 4: Commissioning

• Network Status

• Verify Operation

Section 5: Operation and Maintenance

• LCD Screen Messages

• LCD Rotation

• Battery Replacement

Appendix A: Specifications and Reference Data

• Specifications

• Dimensional drawings

• Ordering Information

Appendix B: Approvals

• Product Certifications

• Installation Drawings

Transmitter Features of the Rosemount 702 include:

• An installation-ready solution that provides a variety of mounting

options, transmitter configurations, and switches/thermowells

• Flexibility to meet your most demanding applications

• Wireless output with >99% data reliability delivers rich HART data,

protected by industry leading security

• Single or dual switch input with logics for limit contact and opposing

contact applications.

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September 2007

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Rosemount 702

• The integral LCD conveniently displays the primary switch input and

diagnostics of the transmitter

• Simple and easy installation practices already used today for robust

installations

CONSIDERATIONS

General Switches produce either an open or closed signal. With simple HART

configuration the Rosemount 702 converts the switch signal to a

wireless-enabled signal.l.

Commissioning The transmitter can be commissioned before or after installation. It may be

useful to commission it on the bench, before installation, to ensure proper

operation and to become familiar with its functionality. When applicable, make

sure the instruments are installed in accordance with intrinsically safe or

non-incendive field wiring practices. The device will be powered whenever the

battery is installed. To avoid depleting the battery, make sure it is removed

when the device is not in use.

Mechanical Location

When choosing an installation location and position, take into account the

need for access to the transmitter. For best performance, the antenna should

be vertical with some space between objects in a parallel metal plane such as

a pipe or metal framework, as the pipes or framework may adversely affect

the performance of the antenna.

Electrical Battery

The Rosemount 702 Wireless Temperature transmitter is battery powered.

The battery pack with the wireless unit contains 2 “C” size primary

lithium/thionyl chloride batteries. Each battery contains approximately 2.5

grams of lithium, for a total of 5 grams in each pack. Under normal conditions,

the battery materials are self-contained and are not reactive as long as the

batteries and the battery pack are maintained. Care should be taken to

prevent thermal, electrical or mechanical damage. Contacts should be

protected to prevent premature discharge.

Use caution when handling the battery pack. The battery pack may be

damaged if dropped from heights in excess of 20 feet.

Switch

Make switch connections through the cable entry in the side of the connection

head. Be sure to provide adequate clearance for cover removal.

Environmental Verify that the operating atmosphere of the transmitter is consistent with the

appropriate hazardous locations certifications.

Temperature Effects

The transmitter will operate within specifications for ambient temperatures

between –40 and 185 °F (–40 and 85 °C). Heat from the process is

transferred from the switch to the transmitter housing. If the expected process

temperature is near or beyond specification limits, consider the use of

additional thermowell and extension, or remote mounting the transmitter to

thermally isolate it from the process.

Reference Manual

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September 2007

Rosemount 702

1-4

Figure 1-1 provides an example of the relationship between transmitter

housing temperature rise and thermowell extension length.

Figure 1-1. 702 Transmitter

Connection Head Temperature

Rise vs. Extension Length

Example

The transmitter specification limit is 85 °C. If the ambient temperature is 55 °C

and the max process temperature to be measured is 815 °C, the maximum

permissible connection head temperature rise is the transmitter specification

limit minus the ambient temperature (moves 85 to 55 °C), or 30 °C.

In this case, an extension of 5” meets this requirement, but 6” provides an

additional margin of thermowell protection, thereby reducing risk of ambient

thermal damage.

Temperature Limits

Operating Limit Storage Limit

With LCD Display –4 to 175 °F

–20 to 80 °C

–40 to 185 °F

–40 to 85 °C

Without LCD Display –40 to 185 °F

–40 to 85 °C

–40 to 185 °F

–40 to 85 °C

Housing Temperature Rise, Above

Ambient °C (°F)

3 4 5 6 7 8 9

60 (108)

50 (90)

40 (72)

30 (54)

20 (36)

10 (18)

4.2

Extension Length (in.)

815 °C (1500 °F) Process Temperature

540 °C (1000 °F) Process Temperature

250 °C (482 °F) Process Temperature

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September 2007

1-5

Rosemount 702

RETURN OF MATERIALS To expedite the return process in North America, call the Emerson Process

Management National Response Center toll-free at 800-654-7768. This

center, available 24 hours a day, will assist you with any needed information

or materials.

The center will ask for the following information:

• Product model

• Serial numbers

• The last process material to which the product was exposed

The center will provide

• A Return Material Authorization (RMA) number

• Instructions and procedures that are necessary to return goods that

were exposed to hazardous substances

For other locations outside North America, please contact an Emerson

Process Management sales representative for further instructions.

NOTE

If the device has been exposed to a hazardous substance, a Material Safety

Data Sheet (MSDS) must be included with the returned materials. An MSDS

is required by law to be available to people exposed to specific hazardous

substances.

SHIPPING CONSIDERATIONS FOR WIRELESS PRODUCTS (LITHIUM

BATTERIES):

The unit was shipped to you without the battery installed. Please remove the

battery pack prior to shipping the unit.

Primary lithium batteries (charged or discharged) are regulated in

transportation by the U.S. Department of transportation, and are also covered

by IATA (International Air Transport Association), ICAO (International Civil

Aviation Organization), and ARD (European Ground Transportation of

Dangerous Goods). It is the responsibility of the shipper to ensure compliance

with these or any other local requirements. Please consult current regulations

and requirements before shipping.

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

1-6

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

www.rosemount.com

Section 2 Configuration

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1

Device Sensor Configuration . . . . . . . . . . . . . . . . . . . . . . page 2-2

Device Network Configuration . . . . . . . . . . . . . . . . . . . . . page 2-2

Remove Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-5

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that

potentially raises safety issues is indicated by a warning symbol ( ). Please

refer to the following safety messages before performing an operation

preceded by this symbol.

Warnings

Failure to follow these installation guidelines could result in death or

serious injury.

• Make sure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

• Before connecting a 375 Field Communicator in an explosive atmosphere, make

sure the instruments are installed in accordance with intrinsically safe or

non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the

appropriate hazardous locations certifications.

Process leaks could result in death or serious injury.

• Do not remove the thermowell while in operation.

• Install and tighten thermowells and sensors before applying pressure

Electrical shock could cause death or serious injury.

• Use extreme caution when making contact with the leads and terminals.

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

2-2

Switch Connections The 702 is compatible with a number of simple switches. Figure 2-1 shows

the correct input connections to the switch terminals on the transmitter. To

ensure a proper switch connection, anchor the switch lead wires into the

appropriate compression terminals and tighten the screws.

Switch Leads

If the switch is installed in a high-voltage environment and a fault condition or

installation error occurs, the sensor leads and transmitter terminals could

carry lethal voltages. Use extreme caution when making contact with the

leads and terminals.

Use the following steps to wire the sensor and supply power to the

transmitter:

1. Remove the transmitter enclosure cover (if applicable).

2. Attach the sensor leads according to the wiring diagrams

3. Connect the battery.

4. Verify the connection by observing the LCD

5. Reattach and tighten the cover (if applicable).

DEVICE SENSOR

CONFIGURATION

Begin by removing the battery-side housing cover. This will expose the

terminal block and HART communication terminals. Connect the battery to

supply power for configuration.

The Rosemount 702 will receive any HART communications from a handheld

Field Communicator, or AMS. When using a Field Communicator, any

configuration changes must be sent to the transmitter by using the Send key

(F2). AMS configuration changes are implemented when the Apply button is

clicked.

AMS Wireless and Direct Connections

AMS is capable of connecting to devices either directly, using a HART

modem, or through wireless via the 1420. When configuring on the bench

using a HART modem, double click the device icon (or right click and select

Configure/Setup), then choose the Configure/Setup tab. Configure the device

settings using the Direct Connection menu. When configuring wirelessly via

the 1420, double click the device icon (or right click and select

Configure/Setup), then choose the Configure/Setup tab. Configure the device

settings using the Wireless Connection menu.

DEVICE NETWORK

CONFIGURATION

In order to communicate with the 1420 Wireless Gateway, and ultimately the

Information System, the transmitter must be configured to communicate with

the wireless network. This step is the wireless equivalent of connecting wires

from a transmitter to the information system.

Using a Field Communicator or AMS, enter the Network ID and Join Key so

that they match the Network ID and Join Key of the gateway and other

devices in the network. If the Network ID and Join Key are not identical, the

transmitter will not communicate with the network. The Network ID and Join

Key may be obtained from the 1420 Wireless Gateway on the

Setup>Network>Settings page on the web server.

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September 2007

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Rosemount 702

The final device network configuration piece is the Update Rate. This by

default is 5 minutes. This may be changed at commissioning, or at any time

via AMS or the 1420 Wireless Gateway’s web server. The Update Rate

should be between 15 seconds and 60 minutes. For networks of up to 100

wireless devices, fastest Update Rate is 60 seconds. For networks of 50 or

fewer devices, the fastest Update Rate is 15 seconds

When device configuration is completed, remove the battery and replace the

battery cover. Tighten the cover to the proper tension for safety approvals.

To access the Network Settings using a 375 Field Communicator, enter the

following Fast Key Sequence: 1, 3, 3.

Figure 2-1. 702 Terminal Block

Connect the HART communication leads to the COMM terminals on the

terminal block.

Figure 2-2. 375 Field

Communicator Connections

For HART communication, a 702 DD is required.

COMM

P/N 00753-9200-0020

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September 2007

Rosemount 702

2-4

HART Menu Tree For ease of operation, changing setup, such as switch type, can be completed

in several locations.

Figure 2-3. Field Communicator Menu Tree

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Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

2-5

Fast Key Sequence Table 2-1 lists the fast key sequences for common transmitter functions.

NOTE:

The fast key sequences assume that DD Dev v1, DD v4 is being used.

Table 2-1. 702 Fast Key

Sequence

Calibration

REMOVE BATTERY

After the sensor and network have been configured, remove the battery pack

and replace the transmitter cover. The battery pack should be inserted only

when the device is ready to be commissioned.

Function Key Sequence Menu Items

Device Information 1, 3, 4, 2 Tag, Date, Descriptor, Message, Model, Model Number I,

II, III, Write Protect, Revision Numbers, Transmitter Serial

Numbers, Device ID

Wireless 1, 4 Smart Power, Network ID, Set Join Key, Radio State

Discrete Input Configuration 1, 3, 2, 1 Output configuration, Discrete Input Configuration

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

2-6

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

www.rosemount.com

Section 3 Mounting

Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2

Direct Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-2

Remote Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-3

LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-4

Ground the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-5

SAFETY MESSAGES Instructions and procedures in this section may require special precautions to

ensure the safety of the personnel performing the operations. Information that

potentially raises safety issues is indicated by a warning symbol ( ). Please

refer to the following safety messages before performing an operation

preceded by this symbol.

Warnings

Failure to follow these installation guidelines could result in death or

serious injury.

• Make sure only qualified personnel perform the installation.

Explosions could result in death or serious injury.

• Before connecting a 375 Field Communicator in an explosive atmosphere, make

sure the instruments are installed in accordance with intrinsically safe or

non-incendive field wiring practices.

• Verify that the operating atmosphere of the transmitter is consistent with the

appropriate hazardous locations certifications.

Process leaks could result in death or serious injury.

• Do not remove the thermowell while in operation.

• Install and tighten thermowells and switches before applying pressure

Electrical shock could cause death or serious injury.

• Use extreme caution when making contact with the leads and terminals

This device complies with Part 15 of the FCC Rules. Operation is subject to the following

conditions: This device may not cause harmful interference. This device must accept any

interference received, including interference that may cause undesired operation.

This device must be installed to ensure a minimum antenna separation distance of 20 cm

from all persons..

Reference Manual

00809-0100-4702, Rev AA

September 2007

Rosemount 702

3-2

MOUNTING The Rosemount 702 can be installed in one of two configurations: Direct

Mount, where the switch is connected directly to the 702 housing’s conduit

entry, or Remote Mount, where the switch is mounted separate from the 702

housing, then connected to the 702 via conduit. Choose the installation

sequence that corresponds to the mounting configuration.

Figure 3-1 provides an example of the relationship between transmitter

housing temperature rise and extension length.

Figure 3-1. 702 Transmitter

Connection Head Temperature

Rise vs. Extension Length

Example

The transmitter specification limit is 85 °C. If the ambient temperature is 55 °C

and the max process temperature to be measured is 815 °C, the maximum

permissible connection head temperature rise is the transmitter specification

limit minus the ambient temperature (moves 85 to 55 °C), or 30 °C.

In this case, an extension of 5” meets this requirement, but 6” provides an

additional margin of thermowell protection, thereby reducing risk of ambient

thermal damage.

Direct Mount The direct mount installation should not be used when installing with a

Swagelok

fitting.

1. Install the switch according to standard installation practices. Be sure

to use thread sealant on all connections.

2. Attach the 702 housing to the switch using the threaded conduit entry.

3. Attach the switch wiring to the terminals as indicated on the wiring

diagram.

4. Connect the battery pack if commissioning the device.

NOTE

Use caution when handling the battery pack. The battery pack may be

damaged if dropped from heights in excess of 20 feet.

Housing Temperature Rise, Above

Ambient °C (°F)

3 4 5 6 7 8 9

60 (108)

50 (90)

40 (72)

30 (54)

20 (36)

10 (18)

4.2

Extension Length (in.)

815 °C (1500 °F) Process Temperature

540 °C (1000 °F) Process Temperature

250 °C (482 °F) Process Temperature

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Rosemount 702 Wireless Discrete Transmitter Owner's manual

Brand: Rosemount

Model: 702 Wireless Discrete Transmitter

Category: Gateways/controllers

Type: Owner's manual

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Rosemount 702 Wireless Discrete Transmitter Owner's manual

Rosemount 702 Wireless Discrete Transmitter Owner's manual

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