Emerson Rosemount 848T Manuel utilisateur

Quick Start Guide

00825-0100-4848, Rev DA

December 2014

Rosemount 848T Wireless Temperature

Transmitter

December 2014

Quick Start Guide

NOTICE

This guide provides basic guidelines for the Rosemount 848T. It does not provide instructions

for detailed configuration, diagnostics, maintenance, service, troubleshooting, or installations.

Refer to the Rosemount 848T reference manual (document number 00809-0100-4848) for

more instruction. The manual and this guide are also available electronically on

www.rosemount.com.

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. Review the

Product Certifications section 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.

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. 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.

The power module may be replaced in a hazardous area. The power module has surface

resistivity greater than one gigaohm and must be properly installed in the wireless device

enclosure. Care must be taken during transportation to and from the point of installation to

prevent electrostatic charge build-up.

NOTICE

Shipping considerations for wireless products:

The unit was shipped to you without the power module installed. Remove the power module

prior to shipping the unit.

Each power module contains two “C” size primary lithium batteries. 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.

Contents

Wireless Considerations. . . . . . . . . . . . . . . . . 3

Physical installation . . . . . . . . . . . . . . . . . . . . . 5

Verify operation . . . . . . . . . . . . . . . . . . . . . . . . 8

Reference Information . . . . . . . . . . . . . . . . .10

Product Certifications. . . . . . . . . . . . . . . . . .12

Quick Start Guide

December 2014

Wireless Considerations

Power up sequence

The power module should not be installed on any wireless device until the Smart

Wireless Gateway (“Gateway”) is installed and functioning properly. Wireless

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

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

installation. Enable Active Advertising on the Gateway to ensure that new devices

join the network faster. For more information see the Smart Wireless Gateway

Manual (Doc. No. 00809-0200-4420).

Antenna position

The antenna should be positioned vertically and it should be approximately 3 ft.

(1 m) from any large structure, building, or conductive surface to allow for clear

communication to other devices.

Figure 1. Antenna Position

Conduit plug

The temporary orange plugs should be replaced with the included conduit plugs

using approved thread sealant.

December 2014

Quick Start Guide

Figure 2. Conduit Plug

Field Communicator connections

The power module needs to be connected for the Field Communicator to

interface with the Rosemount 848T Wireless.

Figure 3. Connection Diagram

A. Maintenance Port

Quick Start Guide

December 2014

Step 1: Physical installation

Initial configuration

If the device was ordered with a factory configured Network ID and Join Key, it

should join the network with no user input. If unsure, the Network ID and the Join

Key may be manually entered to match the Gateway’s.

The Network ID and Join Key may be obtained from the Gateway on the

Setup>Network>Settings page on the web server (see Figure below).

The Network ID and Join Key may be changed in the wireless device by using the

following Fast Key sequence.

Sensor configuration

Sensor inputs can be configured for different sensor types. To verify or change the

sensor configuration with a Field Communicator, use the following Fast Key

sequence.

Remote mount

The Rosemount 848T Wireless is designed to be installed only in the Remote

Mount configuration where the sensor is mounted separate from the 848T

housing, then connected to the 848T via conduit.

1. Install the sensor according to standard installation practices. Be sure to use

thread sealant on all connections.

Function Key sequence Menu items

Wireless 2,1,1 Join Device to Network

Function Key sequence Menu items

Sensor Configuration 2,1,3 Configure Sensors

December 2014

Quick Start Guide

2. To reduce sensor wiring length, mount the Rosemount 848T Wireless

transmitter central to all of the measurements. When installing the 848T

wireless, the conduit entries need to be facing downward. If using the

mounting bracket (Option Code B6), mount to a 2-in. pipe.

3. Run wiring (and conduit, if necessary) from the sensor to the 848T. For an

easier installation, use the outside conduit entries as shown below. Any

unused conduit entries should be sealed with approved sealant using the

included threaded conduit plugs.

A. Conduit Entry

B. Conduit Plug

4. Pull the wiring through the threaded conduit entry of the 848T.

5. Attach the sensor wiring to the terminals as indicated on the wiring diagram.

Note that Terminal screw 5 is for attaching the shield wire of the sensor to the

device. See 848T Wireless Reference Manual (Document No.

00809-0100-4848) for more information.

Quick Start Guide

December 2014

6. To connect the power module, remove the plastic plug from the receptacle.

A. Plastic Plug

7. After initial installation, close the housing cover securely. Always ensure a

proper seal by installing the electronics housing cover so that metal touches

metal, but do not over tighten.

8. Position the antenna vertically. The antenna should be approximately three

feet (1 m) from any large structures or buildings to allow clear communication

to other devices.

Installing the optional voltage adapter

The Rosemount 848T Wireless voltage adapter allows voltage measurement from

0-10 volts. Each adapter accommodates 2 voltage inputs, and can be installed

interchangeably on inputs 1 & 2 or 3 & 4.

To install voltage adapter:

1. Open terminal screws 2 and 3 on BOTH inputs. Note that the screws are

captive and should NOT be completely removed by using excess force.

December 2014

Quick Start Guide

2. Angle adapter and slide spade lugs into terminals 2 and 3 on the left side, as

shown in the figure below. Ensure that the positive and negative polarity

indicators match on the adapter and the terminal block.

3. Lower right side of adapter into terminals 2 and 3 on the right side and center

the adapter.

4. Tighten all terminal screws to lock divider in place.

Step 2: Verify operation

Operation can be verified using one of three methods: Field Communicator, the

Smart Wireless Gateway’s integrated web interface, or via AMS®Wireless

Configurator.

Field Communicator

For HART communication, an 848T Wireless DD is required. For connecting with a

Field Communicator, refer to Figure 3 on page 4.

Smart Wireless Gateway

In the Gateway’s integrated web interface, navigate to the Explorer page. This

page shows whether the device has joined the network and if it is communicating

properly.

Note

It may take several minutes for the device to join the network.

Note

If the device joins the network and immediately has an alarm present, it is likely due to sensor

configuration. Check the sensor wiring (see “Rosemount 848T Terminal Diagram” on page 10) and

the sensor configuration (see “848T Fast Key Sequence for Field Communicator” on page 10).

Function Key sequence Menu items

Communications 3,3

Join Status, Communications Status, Join

Mode, Number of Advertisements Heard,

Number of Available Neighbors, Number

of Join Attempts

Quick Start Guide

December 2014

Figure 4. Smart Wireless Gateway Explorer Page

AMS Wireless Configurator

When the device has joined the network, it will appear in the Device Manager as

illustrated below.

Figure 5. AMS Wireless Configurator Explorer Page

December 2014

Quick Start Guide

Reference Information

Figure 6. Rosemount 848T Terminal Diagram

Figure 7. Sensor Wiring Diagrams

Table 1. 848T Fast Key Sequence for Field Communicator

Function Key sequence Menu items

Device Information 1, 1, 13 Manufacturer, Model, Final Assembly Number, Universal,

Field Device, Software, Hardware, Descriptor, Message, Date,

Model Number SI Unit Control, Country, Device ID

Guided Setup 2, 1 Join Device to Network, Configure Update Rate, Configure

Sensor, Calibrate Sensors, Configure Alerts

Manual Setup 2, 2 Wireless, Sensor 1, Sensor 2, Sensor 3, Sensor 4, Device

Temperature, Device Information, Other

Wireless 2, 2, 1 Network ID, Join Device to Network, Configure Update Rate,

Configure Broadcast Power Level, Power Mode, Power Source

Sensor Calibration 3, 4, 1-4

Sensor 1-4, Current Upper Trim, Current Lower Trim, Lower

Sensor Trim, Upper Sensor Trim, Recall Factory Trim, RTD 2

Wire Offset

2-wire RTD,

Ohm

4-wire RTD,

Ohm

3-wire RTD,

Ohm

Thermocouple, millivolt

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