Rosemount WPG User Manual

Reference Manual

00809-0100-4045,Rev 01 December2015

Rosemount™ Wireless Pressure Gauge

with WirelessHART® Protocol

((

EMERSON.

ProcessManagement

Reference Manual	Table of Contents
00809-0100-4045, Rev 01	December 2015

Section 1: Introduction

1.1 Using this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Models covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Product recycling/disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Section 2: Hardware Installation

2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3.1 Pre-installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3.3 Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3.4 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3.5 Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4.1 Seal and protect threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4.2 Mount device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4.3 Turn on device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 Impulse piping considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5.1 Best practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5.2 Mounting requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.6 Process connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.7 Rosemount manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.7.1 Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 2.7.2 Manifold operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Section 3: Configuration

3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 3.3 System readiness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 3.3.1 Confirm correct device driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.4 Configuration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.4.1 Configuration tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4.2 Connection diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.5 Basic gauge setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.5.1 Eliminate mounting effects. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 3.5.2 Activate wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.5.3 Considerations for devices with percent of range engineering unit . . . .16

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3.6 Configuration verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 3.6.1 Review pressure information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 3.6.2 Review device information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.6.3 Review radio information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.6.4 Review operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

3.7 Advanced device parameter setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 3.7.1 Write protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 3.7.2 Wireless update rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 3.7.3 Dial update rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.8 Notifications and service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3.8.1 Overpressure notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3.8.2 Simulating device variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3.8.3 Device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3.8.4 Join status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 3.8.5 Number of available neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 3.8.6 Acknowledge and reset overpressure notification . . . . . . . . . . . . . . . . . .21

Section 4: Operation and Maintenance

4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 4.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 4.3 Pressure signal trimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 4.3.1 Determining necessary sensor trims. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.3.2 Sensor trim overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 4.3.3 Sensor trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 4.3.4 Recall factory trim—sensor trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.4 Replacing the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 4.5 Local device status and notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 4.5.1 Device status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.5.2 Device notifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Section 5: Troubleshooting

5.1 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 5.2 Local troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 5.3 Remote troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

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Appendix A: Specifications and Reference Data

A.1 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.1 Material selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.2 Dial size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.3 Scale ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.4 Process connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.5 Field Communicator connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 A.1.6 Material of construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 A.1.7 Shipping weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

A.2 Operating specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.1 Conformance to specification (±3 [Sigma]). . . . . . . . . . . . . . . . . . . . . . . . . 34 A.2.2 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.3 Temperature limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.4 Electrical connections/battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 A.2.5 Overpressure limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.6 Burst pressure limit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.7 Minimum span limits for percent of range engineering unit . . . . . . . . . .34 A.2.8 Ambient temperature effect per 18 °F (10 °C). . . . . . . . . . . . . . . . . . . . . . . 34 A.2.9 Digital zero trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 A.2.10Humidity limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.11Electromagnetic compatibility (EMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.12Status indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.13Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 A.2.14Wireless radio (internal antenna) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 A.2.15Wireless update rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 A.2.16Vibration effect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

A.3 Dial update rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 A.4 Pressure scale ranges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Appendix B: Product Certifications

B.1 European Union Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 B.2 Telecommunication compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 B.3 FCC and IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 B.4 Ordinary location certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 B.5 Installing in North America. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

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Appendix C: Field Communicator Menu Trees

C.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Appendix D: Network Design Best Practices

D.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 D.2 Effective range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

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Reference Manual	Title Page
00809-0100-4045, Rev 01	December 2015

Rosemount™ Wireless Pressure

Gauge

Read this manual before working with the product. For personal and system safety, and for optimum product performance, make sure you thoroughly understand the contents before installing, using, or maintaining this product.

Explosions could result in death or serious injury.

Installation of this device in an explosive environment must be in accordance with the appropriate local, national, and international standards, codes, and practices.

Review the approvals section of the gauge reference manual for any restrictions associated with a safe installation.

Ensure device is installed in accordance with intrinsically safe or non-incendive field practices.

Process leaks could result in death or serious injury.

To avoid process leaks, only use the O-ring designed to seal with the corresponding flange adapter.

Electrical shock can result in death or serious injury.

Avoid contact with the leads and the terminals. High voltage that may be present on leads can cause electrical shock.

Care must be taken during transportation of device to prevent electrostatic charge build-up.

Device must be installed to ensure a minimum antenna separation distance of 8 in. (20 cm) from all persons.

Failure to follow safe installation guidelines could result in death or serious injury.

Only qualified personnel should install the equipment.

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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 Emerson™ Process Management nuclear-qualified products, contact your local Rosemount Sales Representative.

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.

Changes or modifications not expressly approved by Rosemount Inc. could void the user's authority to operate the equipment.

Using the Rosemount Wireless Pressure Gauge in a manner other than what is specified by the manufacturer may impair the protection provided by the equipment.

Shipping considerations

The unit is shipped with the battery installed.

Each device 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.

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Section 1	Introduction

1.1Using this manual

The sections in this manual provide information on installing, operating, and maintaining the Rosemount™ Wireless Pressure Gauge with WirelessHART® protocol. The sections are organized as follows:

Section 2: Hardware Installation contains mechanical and electrical installation instructions and considerations.

Section 3: Configuration provides instruction on commissioning and operating the gauge. Information on software functions, configuration parameters, and online variables are also included.

Section 4: Operation and Maintenance contains operation and maintenance techniques.

Section 5: Troubleshooting provides troubleshooting techniques for the most common operating problems.

Appendix A: Specifications and Reference Data supplies reference and specification data, as well as ordering information.

Appendix B: Product Certifications contains approval information.

Appendix C: Field Communicator Menu Trees provides full menu trees and abbreviated fast key sequences for commissioning tasks.

Appendix D: Network Design Best Practices provides information on how to optimize network reliability and performance.

1.2Models covered

This manual covers the Rosemount Wireless Pressure Gauge.

 Measures gage/absolute/compound/vacuum pressure up to 4000 psi (275 bar)

1.3Product recycling/disposal

Recycling of equipment and packaging should be taken into consideration and disposed of in accordance with local and national legislation/regulations.

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Section 2 Hardware Installation

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5 Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5 Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6 Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8 Impulse piping considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9 Process connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11 Rosemount manifolds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11

2.1Overview

The information in this section covers installation considerations. A Quick Start Guide (document number 00825-0100-4045) is shipped with every device to describe basic installation and startup procedures. Dimensional drawings for the Rosemount Wireless Pressure Gauge can be found in Appendix A: Specifications and Reference Data.

2.2Safety messages

Procedures and instructions in this section may require special precautions to ensure the safety of the personnel performing the operation. Information that raises potential safety issues is indicated with a warning symbol ( ). Refer to the following safety messages before performing an operation preceded by this symbol.

Explosions could result in death or serious injury.

Installation of device in an explosive environment must be in accordance with appropriate local, national and international standards, codes, and practices.

Ensure device is installed in accordance with intrinsically safe or non-incendive field practices.

Electrical shock can result in death or serious injury.

Care must be taken during transportation of device to prevent electrostatic charge build-up.

Device must be installed to ensure a minimum antenna separation distance of 8 in. (20 cm) from all persons.

Process leaks could result in death or serious injury.

Handle the device carefully.

Failure to follow safe installation guidelines could result in death or serious injury. Only qualified personnel should install the equipment.

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2.3Considerations

2.3.1Pre-installation

Optional: power/device check

The device is designed to be installation-ready. To check device battery prior to installation, perform the following:

1.Perform “Turn on device” on page 9.

2.Slide the ON/OFF switch to the OFF position until ready for use.

Network design best practices

When mounting the device, recommended practices should be considered to achieve the best wireless performance. See Appendix D: Network design best practices for more information on recommend practices.

Field Communicator connections

The device needs to be on in order for the Field Communicator to interface with the Rosemount Wireless Pressure Gauge. The Field Communicator connection is located to the right of the ON/OFF switch. To communicate with the device, connect the Field Communicator to connections labeled “COMM”. Field communication with this device requires a HART-based tool using the correct Rosemount Wireless Pressure Gauge device driver (DD). Refer to Figure 2-1 for instructions on connecting the Field Communicator to the device.

Figure 2-1. Connect to Device

1	2	3
4	5	6
	8	9 7
	0

B	C

A. Field Communicator B. HART Modem

C. AMS Wireless Configurator

2.3.2Installation

Measurement performance depends upon proper installation of the device and impulse piping. Mount the device close to the process and use a minimum of piping to achieve best performance. Also, consider the need for easy access, personnel safety, and a suitable

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device environment. Install the device to minimize vibration, shock, and temperature fluctuation.

2.3.3Mechanical

Location

When choosing an installation location and position, take into account the direction of the device for future access to the COMM connections and readability of the analog display.

Electronics cover

The electronics cover is tightened so that polymer contacts polymer. When removing the electronics cover, ensure that there is no damage done to the o-ring. If damaged replace before reattaching cover, ensuring polymer contacts polymer (i.e. no O-ring visible).

2.3.4Electrical

Battery

The Rosemount Wireless Pressure Gauge is self-powered. The battery contains approximately 5 grams of lithium-thionyl chloride. Under normal conditions, the battery materails are self-contained and are not reactive as the as the battery is maintained inside the enclosure of the device. 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, it may be damaged if dropped.

The battery should be stored in a clean dry area, For maximum battery life, storage temperature should not exceed 86 °F (30 °C).

2.3.5Environmental

Verify the operating atmosphere of the device is consistent with the appropriate hazardous locations certifications.

Temperature effects

The device will operate within specifications for ambient temperatures as outlined on page 34 in the specifications section. Heat from the process is transferred to the device housing. If the process temperature is high, the ambient temperature will need to be lower to account for heat transferred to the device housing. See Temperature limits for process temperature derating.

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2.4Installation procedure

Figure 2-2. Installation Flowchart

2.4.1Seal and protect threads

2.4.2Mount device

Note

Use wrench on flats, not on housing.

Mounting orientation

The low side pressure port (atmospheric reference) on the process pressure gauge is located in the neck of the device behind the housing. The vent path is between the housing and sensor. (See Figure 2-3.)

Keep the vent path free of any obstruction, including but not limited to paint, dust, and lubrication by mounting the device so the process can drain away.

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Figure 2-3. Low Side Pressure Port

A. Low side pressure port (atmospheric reference)

2.4.3Turn on device

Check to ensure the device and battery are working properly.

1.Twist the cover counterclockwise to remove it.

2.Slide the OFF/ON switch to the ON position to initiate the power sequence.

Note

During the power sequence, the dial tests full range of motion and LED flashes amber.

3.Once the power sequence ends, verify the LED flashes green.

Note

The LED may display several colors; see Table 4-2 on page 28 for device statuses.

2.5Impulse piping considerations

2.5.1Best practices

The piping between the process and the device must accurately transfer the pressure to obtain accurate measurements. There are five possible sources of error: leaks, friction loss (particularly if purging is used), trapped gas in a liquid line, liquid in a gas line, and density variations between the legs.

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The best location for the device in relation to the process pipe depends on the process itself. Use the following guidelines to determine device location and placement of impulse piping:

Keep impulse piping as short as possible.

For liquid service, slope the impulse piping at least 1 inch per foot (8 cm per m) upward from the device toward the process connection.

For gas service, slope the impulse piping at least 1 inch per foot (8 cm per m) downward from the device toward the process connection.

Avoid high points in liquid lines and low points in gas lines.

Make sure both impulse legs are the same temperature.

Use impulse piping large enough to avoid friction effects and blockage.

Vent all gas from liquid piping legs.

When using a sealing fluid, fill both piping legs to the same level.

When purging, make the purge connection close to the process taps and purge through equal lengths of the same size pipe. Avoid purging through the device.

Keep corrosive or hot (above 250 °F [121 °C]) process material out of direct contact with the sensor module and flanges.

Prevent sediment deposits in the impulse piping.

Keep the liquid head balanced on both legs of the impulse piping.

Avoid conditions that might allow process fluid to freeze within the process flange.

2.5.2Mounting requirements

Liquid flow measurement

Place taps to the side of the line to prevent sediment deposits on the process isolators.

Mount the device beside or below the taps so gases vent into the process line.

Mount drain/vent valve upward to allow gases to vent.

Gas flow measurement

Place taps in the top or side of the line.

Mount the device beside or above the taps so to drain liquid into the process line.

Steam flow measurement

Place taps to the side of the line.

Mount the device below the taps to ensure that impulse piping will remain filled with condensate.

Fill impulse lines with water to prevent steam from contacting the device directly and to ensure accurate measurement start-up.

Note

For steam or other elevated temperature services, it is important that temperatures do not exceed 250 °F (121 °C) for devices with silicone fill. For vacuum service, these temperature limits are reduced to 220 °F (104 °C) for silicone fill.

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2.6Process connection

Interfering or blocking the atmospheric reference port will cause the device to output erroneous pressure values.

Keep the vent path free of any obstruction, including but not limited to paint, dust, and lubrication by mounting the device so the process can drain away.

Figure 2-4. Low Side Pressure Port

A. Low side pressure port (atmospheric reference)

Do not apply torque directly to the sensor module. Rotation between the sensor module and the process connection can damage the electronics. To avoid damage, apply torque only to the hex-shaped process connection.

2.7Rosemount manifolds

The Rosemount 306 Integral Manifold mounts directly to the device. The manifold is used with this device to provide block-and-bleed valve capabilities of up to 4000 psi (275 bar).

2.7.1Installation procedure

The 306 Manifold is for use only with a Wireless Pressure Gauge.

Assemble the 306 Manifold to the device with a thread sealant.

1.Place device into holding fixture.

2.Apply appropriate thread paste or tape to threaded instrument end of the manifold.

3.Count total threads on the manifold before starting assembly.

4.Start turning the manifold by hand into the process connection on the device.

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Note

If using thread tape, be sure the thread tape does not strip when the manifold assembly is started.

5.Wrench tighten manifold into process connection (minimum toque value is 425 in-lbs).

6.Count how many threads are still showing (minimum engagement is 3 revolutions).

7.Subtract the number of threads showing (after tightening) from the total threads to calculate the revolutions engaged. Further tighten until a minimum of 3 rotations is achieved.

8.For block and bleed manifold, verify the bleed screw is installed and tightened. For 2-valve manifold, verify the vent plug is installed and tightened.

9.Leak-check assembly to maximum pressure range of device.

2.7.2Manifold operation

Improper installation or operation of manifolds may result in process leaks, which may cause death or serious injury.

Always perform a zero trim on the device/manifold assembly after installation to eliminate any shift due to mounting effects. See Section 5: Operation and maintenance, “Sensor Trim Overview” on page 67.

The 2-valve configuration is available on Rosemount 305, 306, and 304 Manifolds for use with absolute and gage pressure devices. A block valve provides instrument isolation and a drain/vent valve allows venting, draining, or calibration.

306 Manifolds

Device

Test/vent

Isolate

Process

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