Emerson Rosemount 248 Bedienungsanleitung

Quick Start Guide

00825-0200-4248, Rev EC

April 2019

Rosemount™248 Wireless Temperature

Transmitter

00825-0200-4248_RevEC.fm Page 1 Wednesday, April 17, 2019 9:03 AM

April 2019

Quick Start Guide

Rosemount 248 Wireless Temperature

Transmitter

Rosemount 248 Wireless Hardware Revision

HART®Device Revision

Device Install Kit/Device Driver (DD) Revision

Device Type

Device Revision 01, DD Revision 01 or greater

2676

NOTICE

This guide provides basic guidelines for the Rosemount 248 Wireless. It does not provide instructions for

detailed configuration, diagnostics, maintenance, service, troubleshooting, or installations. Refer to the

Rosemount 248 Wireless Reference Manual for more instruction. The manual and this guide are also

available electronically on Emerson.com/Rosemount.

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 Field Communicator in an explosive atmosphere, make sure the instruments are

installed in accordance with intrinsically safe or non-incendive field wiring practices.

Verify 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.

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

operations.

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

person.

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

greater than one giga-ohm 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.

Contents

Wireless considerations. . . . . . . . . . . . . . . . . . . . 4

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

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

Reference Information. . . . . . . . . . . . . . . . . . . . 11

Power module replacement . . . . . . . . . . . . . . . 14

Product Certifications . . . . . . . . . . . . . . . . . . . . 16

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Quick Start Guide

April 2019

NOTICE

Shipping considerations for wireless products (Lithium Batteries: Green Power Module, model

number 701PGNKF):

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

shipping the unit.

Each green power module contains one “D” size primary lithium-thionyl chloride battery. 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. Consult current regulations and requirements

before shipping.

Power module considerations (Green Power Module, model number 701PGNKF):

The green power module with the wireless unit contains one “D” size primary lithium-thionyl chloride

battery (model number 701PGNKF). Each battery contains approximately 5.0 grams of lithium. 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.

Power modules should be stored in a clean and dry area. For maximum power module life, storage

temperature should not exceed 30 °C.

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April 2019

Quick Start Guide

1.0 Wireless considerations

1.1 Power up sequence

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

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 new devices join the network faster. For

more information, see the Gateway Reference Manual.

1.2 Antenna position

The internal antenna is designed for multiple mounting orientations. The

transmitter should be mounted according to best practices for your temperature

measurement application. The transmitter should be approximately 3 ft. (1 m)

from any large structure or building to allow clear communication to other

devices.

1.3 Field Communicator connections

The power module must be installed in the device for the Field Communicator to

interface with the Rosemount 248 Wireless. The Field Communicator

connections are located on the green power module. To communicate to the

transmitter, begin by removing the power module cover. This will expose the

HART communication terminals located on the green power module. Next,

connect the Field Communicator leads to the COMM port connections on the

green power module.

This transmitter uses the green power module; order model number 701PGNKF.

The power module is keyed and can only be inserted in one orientation. Field

communication with this device requires a HART-based Field Communicator.

Refer to Figure 1 for instructions on connecting the Field Communicator to the

Rosemount 248 Wireless.

Figure 1. Field Communicator Connection

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Quick Start Guide

April 2019

2.0 Physical installation

The Rosemount 248 Wireless can be installed in one of two configurations: Direct

Mount, where the sensor is connected directly to the Rosemount 248 Wireless

conduit entry, or remote mount, where the sensor is mounted separately from

the 248 Wireless housing, then connected to the Rosemount 248 Wireless via

wiring or conduit. Select the installation sequence that corresponds to the

mounting configuration.

2.1 Direct mount

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

Swagelok®fitting.

1. Remove the transmitter enclosure cover.

2. Remove the LCD display (if applicable).

3. Loosen the captive screws and Remove LCD display adapter plate (if

applicable).

Figure 2. Exploded View of LCD Display and Power Module Assembly

4. Attach the sensor to the Rosemount 248 Wireless housing using the threaded

conduit entry. Be sure to use an approved thread sealant on all connections.

5. Attach the sensor wiring to the terminals as indicated on Figure 7.

6. Reattach and secure LCD display adapter plate to 5 in-lb of torque (if

applicable).

7. Reattach the LCD display (if applicable).

8. Reattach and tighten the transmitter enclosure cover.

9. Remove the power module cover.

10. Connect the green power module.

Note

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

with the closest device to the Gateway. This will result in a simpler and faster network

installation.

11. Reattach and tighten the power module cover.

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April 2019

Quick Start Guide

12. Always ensure a proper seal by installing the electronics housing cover(s) so

that polymer contacts polymer (i.e. no o-ring visible). Use Rosemount O-rings.

13. Provide 1.75-in. (45 mm) of clearance for units without an LCD display.

Provide 3-in. (76 mm) of clearance for units with an LCD display for cover

removal.

Figure 3. Direct Mount

Note

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

with the closest device to the Gateway. This will result in a simpler and faster network

installation.

2.2 Remote mount

1. Remove the transmitter enclosure cover.

2. Remove the LCD display (if applicable).

3. Loosen the captive screws and remove LCD display adapter plate (if

applicable). Refer to Figure 2.

4. Run wiring (and conduit, if necessary) from the sensor to the Rosemount 248

Wireless. Use an 1/2-in. NPT when mating conduit to the Rosemount 248

Wireless.

5. Pull the wiring through the threaded conduit entry of the Rosemount 248

Wireless.

6. Attach the sensor wiring to the terminals as indicated on Figure 7.

7. Reattach and secure LCD display adapter plate to 5 in-lb of torque (if

applicable).

8. Reattach the LCD display (if applicable).

9. Reattach and tighten the transmitter enclosure cover.

10. Remove the power module cover.

11. Connect the green power module.

00825-0200-4248_RevEC.fm Page 6 Wednesday, April 17, 2019 9:03 AM

Quick Start Guide

April 2019

12. Reattach and tighten the power module cover.

Note

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

with the closest device to the Gateway. This will result in a simpler and faster network

installation.

13. Always ensure a proper seal by installing the electronics housing cover(s) so

that polymer contacts polymer (i.e. no o-ring visible). Use Rosemount O-rings.

14. Provide 1.75-in. (45 mm) of clearance for units without an LCD display.

Provide 3-in. (76 mm) of clearance for units with an LCD display for cover

removal.

Figure 4. Remote Mount

Note

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

with the closest device to the Gateway. This will result in a simpler and faster network

installation.

00825-0200-4248_RevEC.fm Page 7 Wednesday, April 17, 2019 9:03 AM

April 2019

Quick Start Guide

3.0 Verify operation

Operations can be verified in four locations: at the device via the local display,

using the Field Communicator, at the Gateway's integrated web interface, or

using AMS™Suite Wireless Configurator or AMS Device Manager.

3.1 Local display

During normal operation, the LCD display will display the PV value at the

configured update rate.

For Device Status screens, see LCD screen messages on Rosemount 248 Wireless

Reference Manual.

3.2 Field Communicator

For HART Wireless transmitter communication, a Rosemount 248 Wireless DD is

required. To obtain the latest DD, visit the Emerson™Easy Upgrade site at:

Emerson.com/Rosemount/Device-Install-Kits

The communication status may be verified in the wireless device using the

following Fast Key sequence.

3.3 Gateway

In the integrated web interface from the Gateway, navigate to the Explorer>Status

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 Figure 7 on page 11) and the sensor

configuration (see Table 3 on page 12).

Table 1. Fast Key Sequence

Function Fast Key sequence Menu items

Communications 3, 4 Comm Status, Join Mode, Available Neighbors,

Advertisement, Join Attempts

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Quick Start Guide

April 2019

Figure 5. Gateway Network Settings

3.4 AMS Wireless Configurator

When the device has joined the network, it will appear in the Wireless

Configurator window as illustrated in figure below. For HART Wireless transmitter

communication, a Rosemount 248 Wireless DD is required. To obtain the latest

DD, visit the Emerson Easy Upgrade site at:

Emerson.com/Rosemount/Device-Install-Kit

00825-0200-4248_RevEC.fm Page 9 Wednesday, April 17, 2019 9:03 AM

April 2019

Quick Start Guide

Figure 6. Rosemount 248 Wireless shown on AMS Wireless Configurator

3.5 Troubleshooting

If the device is not joining to the network, check to make sure that you have a

power supply in your device. If the device is not joined to the network after power

up, verify the correct configuration of the Network ID and Join Key, and verify that

Active Advertising has been enabled on the Gateway. The Network ID and Join

Key in the device must match the Network ID and Join Key of the Gateway.

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

Setup>Network>Settings page on the web server (see Figure 5 on page 9). The

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

following Fast Key sequence.

Table 2. Fast Key Sequence

Function Fast Key sequence

Join to Network 2, 1, 1

00825-0200-4248_RevEC.fm Page 10 Wednesday, April 17, 2019 9:03 AM

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