Emerson Rosemount 3308A Reference Manual

Reference Manual

00809-0100-4308, Rev BB

October 2016

Rosemount™ 3308 Series Wireless Guided Wave Radar, Rosemount 3308A

Reference Manual

00809-0100-4308, Rev BB

Rosemount™ 3308 Series Wireless
Guided Wave Radar Level Transmitter

NOTICE

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.

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)
North American Response Center

1-800-654-7768 (24 hours a day)
Equipment service needs

International
1-952-906-8888

Power Module Considerations.

Each Power Module 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.
Power modules should be stored in a clean and dry area. For maximum battery life, storage temperature

should not exceed 30 °C.
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.

Shipping considerations for wireless products.

The unit was shipped to you without the Power Module installed. Please remove the Power Module prior
to shipping the unit.

Each Power Module contains two "C" size primary lithium/thionyl chloride batteries. Primary lithium
batteries (charged or discharged) are regulated during transportation by the U.S. Department of
Transportation. They 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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Explosions could result in death or serious injury.

 Verify that the operating environment of the gauge is consistent with the appropriate hazardous

locations certifications.

 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.

 Ground device on non-metallic tanks (e.g. fiberglass tanks) to prevent electrostatic charge build-up.
 Single lead probes are sensitive for strong electromagnetic fields and therefore not suitable for

non-metallic tanks.

 Care must be taken during transportation of power module 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.

 Probes covered with plastic and/or with plastic discs may generate an ignition-capable level of

electrostatic charge under certain extreme conditions. Therefore, when the probe is used in a
potentially explosive atmosphere, appropriate measures must be taken to prevent electrostatic
discharge.

Process leaks could result in death or serious injury.

 Only qualified personnel should install the equipment.
 Install transmitter prior to process start-up.
 Install and tighten process connectors before applying pressure.
 Handle the transmitter carefully.
 Do not remove the transmitter while in operation.
 If the process seal is damaged, gas could escape from the tank when removing the transmitter head

from the probe.

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

 Verify that the operating environment of the gauge is consistent with the appropriate hazardous

locations certifications.

 Make sure the transmitter is installed by qualified personnel and in accordance with applicable code

of practice.

 Use the equipment only as specified in this manual. Failure to do so may impair the protection

provided by the equipment.

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Electronic boards are electrostatically sensitive. Failure to observe proper handling precautions for
static-sensitive components can result in damage to the electronic components. Do not remove the
electronic boards from the Rosemount 3308 Series Transmitter.

To ensure long life for your radar transmitter, and to comply with hazardous location installation
requirements, tighten covers on both sides of the electronics housing.

Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components
etc., may also jeopardize safety and is under no circumstances allowed.

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 (8 in.) from all persons.

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October 2016

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 your local Emerson Process

Management Sales Representative.

Individuals who handle products exposed to a hazardous substance can avoid injury if they are informed
of and understand the hazard. If the product being returned was exposed to a hazardous substance as
defined by Occupational Safety and Health Administration (OSHA), a copy of the required Material
Safety Data Sheet (MSDS) for each hazardous substance identified must be included with the returned
goods.

Use caution when handling the Power Module. The Power Module may be damaged if dropped from
heights in excess of 20 ft (6 m).

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

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Contents

1Section 1: Introduction

2Section 2: Transmitter Overview

Contents

October 2016

1.1 Using this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Product recycling/disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.1 Theory of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Wireless by Emerson

2.3 Application characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.1 Tank shape. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3.2 In-tank obstructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3.3 Interface level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4 Application examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.5 Components of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

™

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.6 Probe selection guide for the Rosemount 3308 Series Transmitter. . . . . . . . . . . . . . . . . . . . . . 10

3Section 3: Installation

3.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.2 Installation procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.3 Review mounting considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.3.1 Recommended mounting position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.3.2 Flange connection on nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.3.3 Installation in non-metallic tanks and open-air applications . . . . . . . . . . . . . . . . . . . . . . 19

3.4 Review mounting preparations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.4.1 Measure tank height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.4.2 Shorten the probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.4.3 Mount a centering disc for pipe installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.5 Anchor the probe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.5.1 Flexible single/twin lead probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.5.2 Rigid single lead probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.5.3 Coaxial probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.6 Mount device on tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.6.1 Threaded tank connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.6.2 Tank connection with flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Content s

3.6.3 Tank connection with loose flange (“plate design”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.6.4 Tank connection with Tri Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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3.6.5 Segmented probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.7 Ground the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3.8 Install the power module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

3.9 Position the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

3.10Utilize the device display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3.10.1Rotate the device display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3.10.2Retrofitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4Section 4: Configuration

4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.2 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

4.3 Configuration procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.4 Get started with your preferred configuration tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4.4.1 AMS Wireless Configurator (version 12.0 or later is required) . . . . . . . . . . . . . . . . . . . . . 54

4.4.2 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

4.5 Join device to wireless network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.5.1 Power up the wireless device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.5.2 Connect to device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

4.5.3 Configure Update Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4.5.4 Obtain Network ID and Join Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

4.5.5 Enter Network ID and Join Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.5.6 Verify device joins network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

4.6 Configure device using Guided Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

4.6.1 Connect to device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

4.6.2 Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.6.3 Optional Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

4.7 Verify Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

5Section 5: Operation

5.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

5.2 Device display screen messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5.2.1 Variable screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5.2.2 Diagnostic button screen sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

5.3 View measurement values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.3.1 View current measurement values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.3.2 View trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.3.3 Interpret measurement status bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

5.4 Check Device Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

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6Section 6: Service and Troubleshooting

Contents

October 2016

6.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

6.2 Alert messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

6.2.1 Device display alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

6.2.2 Alert messages in AMS Wireless Configurator and Field Communicator. . . . . . . . . . . . 81

6.3 Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

6.3.1 Incorrect level readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

6.3.2 Incorrect or missing interface level reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

6.3.3 Power module troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

6.3.4 Device display troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

6.3.5 Wireless Network troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

6.4 Service and troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

6.4.1 Reading the Echo Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

6.4.2 Adjusting thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

6.4.3 Viewing Measurement History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

6.4.4 Reviewing Network Join Status and Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

6.4.5 Locating the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

6.4.6 Using the Simulation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

6.5 Application challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

6.5.1 Resolving thin oil layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

6.5.2 Handling disturbances at the top of the tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

6.5.3 Interface measurements with fully submerged probes. . . . . . . . . . . . . . . . . . . . . . . . . . 100

6.5.4 Noise or weak surface echoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

6.6 Power module replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

6.7 Transmitter head replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

6.8 Probe replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

6.9 Service support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

AAppendix A: Specifications and Reference Data

A.1 Functional specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

A.1.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

A.1.2 Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

A.1.3 Display and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

A.1.4 Temperature limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

A.1.5 Process temperature and pressure rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

A.1.6 Interface measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Content s

A.1.7 Conditions used for flange strength calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

A.2 Performance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

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A.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

A.2.2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

A.2.3 Interface measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

A.2.4 Accuracy over measuring range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

A.3 Physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3.1 Material selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3.2 Tank connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3.3 Flange dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3.4 Probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

A.3.5 Material exposed to tank atmosphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

A.3.6 Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

A.3.7 End weight and anchoring options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

A.3.8 Installation in non-metallic tanks and open-air applications . . . . . . . . . . . . . . . . . . . . .119

A.3.9 Other mechanical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

A.3.10Engineered solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

A.3.11Chamber/pipe installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

A.4 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

A.5 Spare parts and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

A.6 Dimensional drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

BAppendix B: Product Certifications

B.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

B.2 Product certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.1 European Union Directive Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.2 Approved manufacturing locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.3 ATEX Directives (94/9/EC) (2014/34/EU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.4 Electro Magnetic Compatibility (EMC) (2004/108/EC) (2014/30/EU) . . . . . . . . . . . . . 146

B.2.5 Radio and Telecommunications Terminal Equipment Directive (R&TTE) (1999/5/EC). .

146

B.2.6 Telecommunication Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.7 FCC and IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.8 Ordinary Location Certification for FM Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

B.2.9 Pressure Equipment Directive (PED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

B.2.10Hazardous Locations Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

B.2.11Other certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

B.3 Approval drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

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CAppendix C: High Gain Remote Antenna Option

Contents

October 2016

C.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

C.2 Functional and physical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

C.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

C.2.2 Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

C.2.3 Coaxial cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

C.2.4 RF Lightning Arrestor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

C.2.5 Mounting bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

C.2.6 Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

C.3 Review installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

C.3.1 Antenna mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

C.3.2 Antenna height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152

C.3.3 Affix coaxial cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C.3.4 Install coaxial drip loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153

C.3.5 Apply coaxial sealant moisture protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C.4 Transient/lightning considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C.4.1 Gateway transient protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C.4.2 RF lightning arrestor ground connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

C.5 Install the high gain remote antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154

DAppendix D: Configuration Parameters

D.1 Safety messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

D.2 Menu overview of the Device Descriptor (DD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

D.3 Configuration parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

D.3.1 Guided Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

D.3.2 Manual Setup - Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

D.3.3 Manual Setup - Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

D.3.4 Alert Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171

D.3.5 Echo Tuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

EAppendix E: Alert Message Mapping

E.1 Alert messages and descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Content s

v

Contents

October 2016

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00809-0100-4308, Rev BB

vi

Contents

Reference Manual

00809-0100-4308, Rev BB

Section 1 Introduction

1.1 Using this manual

The sections in this manual provide information on installing, configuring, operating, and maintaining
the Rosemount

Section 2: Transmitter Overview provides an introduction to theory of operation and description of the

transmitter. Information on applications and a probe selection guide are also included.

Section 3: Installation contains mechanical and electrical installation instructions.

Section 4: Configuration provides instructions on how to configure and make the transmitter join the

wireless network.

Section 5: Operation contains operation techniques such as viewing measurement data and display

functionality.

Section 6: Service and Troubleshooting provides troubleshooting techniques for the most common

operating problems, as well as diagnostic and error messages, and service instructions.

™

3308 Series Transmitter. The sections are organized as follows:

Introduction

October 2016

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

information.

Appendix B: Product Certifications contains hazardous locations certifications and approval drawings.

Appendix C: High Gain Remote Antenna Option contains specification and installation information of the high

gain remote antenna option.

Appendix D: Configuration Parameters provides a menu overview for the Device Descriptor in AMS

Configurator and the Field Communicator. Description of the configuration parameters is also included.

Appendix E: Alert Message Mapping outlines the most important alerts in the HART

Additional Status Field for Rosemount 3308 Series.

1.2 Product recycling/disposal

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

®

command 48

™

Wireless

Introduction

1

Introduction

October 2016

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2

Introduction

Reference Manual

Time

Reference Peak

Signal Amplitude

Tank He ight

Product Level

Upper Reference Point

Zero Reference Point

Interface
Level

Probe
Length

Product Surface

Peak

Interface Peak

00809-0100-4308, Rev BB

Section 2 Transmitter Overview

Theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

Wireless by Emerson™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

Application characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

Application examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

Components of the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9

Probe selection guide for the Rosemount 3308 Series Transmitter . . . . . . . . . . . . . . . . . . . . . . page 10

2.1 Theory of operation

The Rosemount™ 3308 Series is the first true wireless level transmitter that is based on the Time Domain
Reflectometry (TDR) principle. Low power nano-second-pulses are guided along a probe submerged in
the process media. When a pulse reaches the surface of the material it is measuring, part of the energy is
reflected back to the transmitter, and the time difference between the generated and reflected pulse is
converted into a distance from which the total level or interface level is calculated (see Figure 2-1).

Transmitter Overview

October 2016

The reflectivity of the product is a key parameter for measurement performance. A high dielectric
constant of the media gives better reflection and a longer measuring range.

Figure 2-1. Guided Wave Radar Operating Principle

Tra nsm itter Overv iew

3

Transmitter Overview

F

E

ABCD

October 2016

Reference peak

This peak is caused by the transition between transmitter and the tank vapor space or air. It is used by the
transmitter as a starting reference point for distance to the level surface.

Product surface peak

This peak indicates the product level and is caused by a reflection from the product surface.

Interface peak

This peak indicates the interface level. The peak is caused by reflection from the interface between an
upper product and a bottom product with a relatively high dielectric constant. This peak is identified
when the Measurement Mode is set to Product Level and Interface Level or Interface Level with
Submerged Probe.

Probe end peak

It is caused by reflection from the probe end. If the probe is grounded, the peak will be positive. If the
probe end is submerged in a high dielectric media, such as water, it will not be visible.

Upper reference point

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00809-0100-4308, Rev BB

The Upper Reference Point is located at the underside of the transmitter flange or the bottom end of the
threaded adapter, as illustrated in Figure 2-2 on page 4.

Figure 2-2. Upper Reference Point

A. NPT D. Tri Cla mp
B. BSP/G E. Upper Reference Point
C. Flange F. Probe Length

Zero reference point

The Zero Reference Point is selected by the user and is usually located close to or at the bottom of the
tank. The Zero Reference Point can be set to any position in the tank by adjusting the Tank Height.

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A

B

D

E

00809-0100-4308, Rev BB

Tank height

The Tank Height is the distance from the Upper Reference Point to the Zero Reference Point. The
transmitter measures the distance to the product surface and subtracts this value from the Tank Height
to determine the level.

Probe length

The probe length is the distance between the Upper Reference Point and the end of the probe. If a
weight is used at the end of the probe it shall be included.

Blind zones

The measuring range depends on probe type, dielectric constant of the product and installation
environment, and is limited by the Blind Zones at the very top and bottom of the probe. In the Blind
Zones, the accuracy exceeds ±1.18 in. (30 mm), and measurements may not be possible. Measurements
close to the Blind Zones will have reduced accuracy.

Figure 2-3 illustrates how the measuring range is related to the Blind Zones and the areas with reduced

accuracy. Values for different probe types and dielectric constants are presented in section “Ac cu ra cy

over measuring range” on page 113.

Transmitter Overview

October 2016

Figure 2-3. Blind Zones

A. Upper Blind Zone D. Reduced Accuracy
B. Reduced Accuracy E. Lower Blind Zone
C. Maximum Measuring Range

Tra nsm itter Overv iew

Note

Measurements may not be possible in the Blind Zones, and measurements close to the Blind Zones will
have reduced accuracy. Therefore, the alarm points should be configured outside these zones.

5

Transmitter Overview

October 2016

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00809-0100-4308, Rev BB

2.2 Wireless by Emerson

The Emerson Wireless network is a self-organizing solution. Wireless field instruments send data to a
Gateway, directly or routed through any of the wireless devices in the network, as illustrated in

Figure 2-4. Multiple communication paths are managed and analyzed in parallel to assure optimal

communication and sustained network reliability even if obstructions are introduced.

Figure 2-4. Emerson Wireless Network

™

Gateways interface with existing host systems using industry standard protocols, and native integration
into DeltaV

Interference from other radios, WiFi, and EMC sources is avoided through Time Synchronized Channel
Hopping and Direct Sequence Spread Spectrum (DSSS). Also, a layered security implementing industry
standard Encryption, Authentication, Verification, Anti-Jamming, and Key Management ensures that
data transmissions are secure and received only by the Gateway.

™

and Ovation is transparent and seamless.

2.3 Application characteristics

2.3.1 Tank shape

The guided wave radar transmitter is insensitive to the tank shape. Since the radar signal travels along a
probe, the shape of the tank bottom has no effect on the measurement performance. The transmitter
handles flat or dish-bottom tanks equally well.

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B

C

00809-0100-4308, Rev BB

2.3.2 In-tank obstructions

The Rosemount 3308 Series Transmitter is relatively insensitive to objects in the tank since the radar
signal is transmitted along a probe.

Avoid physical contact between probes and agitators as well as applications with strong fluid movement
unless the probe is anchored. If the probe can move within 1 ft (30 cm) away from any object, such as an
agitator, during operation then probe tie-down is recommended.

In order to stabilize the probe for side forces, you have the option to either hang a weight at the probe
end (flexible probes only) or fix/guide the probe to the tank bottom.

2.3.3 Interface level measurement

Rosemount 3308 Series Transmitter is well suited for measuring the interface of oil and water, or other
liquids with significant dielectric differences.

Figure 2-5. Interface Level Measurement

Transmitter Overview

October 2016

Tra nsm itter Overv iew

A. Product Level C. Interface Level
B. Interface Level

All probes can be used for measuring interfaces. Single probes are the preferred choice in almost all
applications but depending on the application and installation geometries a coaxial probe or a flexible
twin probe may be a better fit.

For measuring the interface level, the transmitter uses the residual wave of the first reflection. Part of the
wave, which was not reflected at the upper product surface, continues until it is reflected at the lower
product surface. The speed of this wave depends fully on the dielectric constant of the upper product.

The maximum allowable upper product thickness/measuring range is primarily determined by the
dielectric constants of the two liquids. Target applications include interfaces between oil/oil-like and
water/water-like liquids. For such applications the upper product dielectric constant is low (<3) and the
lower product dielectric constant is high (>20). Refer to “Interface measurements” on page 109 for
further interface application guidelines.

Emulsion layers

Sometimes there is an emulsion layer (mix of the products) between the two products which, depending
on its characteristics, will affect interface measurements. Please consult factory for guidelines on how to
handle emulsion layers.

7

Transmitter Overview

Oil

Oil

Water

October 2016

2.4 Application examples

The Rosemount 3308 Series Transmitter is suited for aggregate (total) level measurements on a wide
range of liquids, semi-liquids, and liquid to liquid interfaces.

Moreover, the reliable and accurate guided wave radar technology offers a versatile solution that is
virtually unaffected by process conditions such as temperature, pressure, vapor gas mixtures, density,

turbulence, bubbling/boiling, varying dielectric media, pH, and viscosity.

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00809-0100-4308, Rev BB

Production, storage,
and buffer tanks

Low pressure
separators

Waste tanks and
sump pits

The Rosemount 3308 Series Transmitter is
ideal for production and shorter storage or
buffer tanks that contain oil, gas
condensate, water, or chemicals.

The Rosemount 3308 Series Transmitter
can measure both level and interface level
in for example separator applications.

The Rosemount 3308 Series Transmitter is
a good choice for waste tanks and
underground tanks, such as sump pits.

Chamber
applications

8

The Rosemount 3308 Series Transmitter is
a good choice for both chamber and pipe
installations.

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FG

E

A

B

C

HI JKL

00809-0100-4308, Rev BB

2.5 Components of the transmitter

The Rosemount 3308 Series transmitter housing contains advanced electronics for signal processing.
The transmitter housing is made of aluminum or stainless steel, depending on specified option code.

The radar electronics produces an electromagnetic pulse which is guided by the probe.

There are different probe types available for various applications: Flexible Single Lead, Rigid Single Lead,
Flexible Twin Lead, and Coaxial.

Figure 2-6. Transmitter Components

Transmitter Overview

October 2016

A. Radar Electronics G. NPT
B. Flanged Process Connections H. Flexible Single Lead with weight
C. Probe I. Rigid Single Lead
D. Dual Compartment Housing J. Flexible Twin Lead with weight
E. Threaded Process Connections K. Coaxial
F. BSP (G) L. Segmented rigid single lead probe

Tra nsm itter Overv iew

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Transmitter Overview

October 2016

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2.6 Probe selection guide for the Rosemount 3308 Series
Transmitter

Use the following guidelines to choose appropriate probe for your Rosemount 3308 Series transmitter:

Table 2-1. Probe Selection Guide. G=Good, NR=Not Recommended, AD=Application Dependent

(consult factory)

Rigid single lead,

Flexible

single lead

Measurements

Level G G G G

Interface (liquid/liquid) G G G G

Process medium characteristics

Changing density G G G G

Changing dielectric

Wide pH variations G G G G

Pressure changes GGGG

(2)

GGGG

segmented rigid

single lead

Flexible

twin lead

Coaxial

(1)

Temperature changes GGGG

Condensing vapors G G G G

Bubbling/boiling surfaces G G G G

Foam (mechanical avoidance) NR NR NR AD

Foam (top of foam measurement) AD AD AD NR

Foam (foam and liquid measurement) AD AD AD NR

Clean liquids GGGG

Liquid with dielectric<2.0 AD AD AD AD

Coating liquids G G NR NR

Viscous liquids G G AD NR

Crystallizing liquids AD AD NR NR

Solids/Powders NR NR NR NR

Fibrous liquids G G NR NR

Tank environment considerations

Probe is close (<12 in./30 cm) to
disturbing objects

Tall and narrow mounting nozzles
(diameter <6 in./15 cm and
height>diameter + 4 in./10 cm)

Probe might touch nozzle / disturbing
object

Liquid or vapor spray might touch
probe

NR NR AD G

AD AD AD G

NR NR NR G

NR NR NR G

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High turbulence AD

Turbulent conditions causing breaking
forces

Non-metallic tanks or open
atmosphere applications

1. Not in fully submerged applications.

2. For overall level applications a changing dielectric has no effect on the measurement. For interface measurements a changing dielectric
of the top fluid will degrade the accuracy of the interface measurement.

3. Ok If probe is anchored.

4. Not suitable in applications with disturbing EMC from nearby equipment.

Transmitter Overview

Rigid single lead,

Flexible

single lead

(3)

AD NR AD NR

(4)

AD

segmented rigid

single lead

GAD

(4)

AD

Flexible

twin lead

(3)

(4)

AD

October 2016

Coaxial

G

G

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Section 3 Installation

Safety messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 13

Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15

Review mounting considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16

Review mounting preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20

Anchor the probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 30

Mount device on tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 33

Ground the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 48

Install the power module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49

Position the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 49

Utilize the device display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 50

3.1 Safety messages

Installation

October 2016

Procedures and instructions in this section may require special precautions to ensure the safety of the
personnel performing the operations. Information that raises potential safety issues is indicated by a

warning symbol ( ). Refer to the following safety messages before performing an operation preceded
by this symbol.

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

 Verify that the operating environment of the gauge is consistent with the appropriate hazardous

locations certifications.

 Make sure the transmitter is installed by qualified personnel and in accordance with applicable code

of practice.

 Use the equipment only as specified in this manual. Failure to do so may impair the protection

provided by the equipment.

Explosions could result in death or serious injury.

 Verify that the operating environment of the gauge is consistent with the appropriate hazardous

locations certifications.

 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.

Installation

13

Installation

October 2016

Reference Manual

00809-0100-4308, Rev BB

Electrical shock can result in death or serious injury.

 Ground device on non-metallic tanks (e.g. fiberglass tanks) to prevent electrostatic charge build-up.
 Single lead probes are sensitive for strong electromagnetic fields and therefore not suitable for

non-metallic tanks.

 Care must be taken during transportation of power module 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.

 Probes covered with plastic and/or with plastic discs may generate an ignition-capable level of

electrostatic charge under certain extreme conditions. Therefore, when the probe is used in a
potentially explosive atmosphere, appropriate measures must be taken to prevent electrostatic
discharge.

Process leaks could result in death or serious injury.

 Only qualified personnel should install the equipment.
 Install transmitter prior to process start-up.
 Install and tighten process connectors before applying pressure.
 Handle the transmitter carefully.
 Do not remove the transmitter while in operation.
 If the process seal is damaged, gas could escape from the tank when removing the transmitter head

from the probe.

14

Electronic boards are electrostatically sensitive. Failure to observe proper handling precautions for
static-sensitive components can result in damage to the electronic components. Do not remove the
electronic boards from the Rosemount

™

3308 Series Transmitter.

To ensure long life for your radar transmitter, and to comply with hazardous location installation
requirements, tighten covers on both sides of the electronics housing.

Any substitution of non-recognized parts may jeopardize safety. Repair, e.g. substitution of components
etc., may also jeopardize safety and is under no circumstances allowed.

Use caution when handling the Power Module. The Power Module may be damaged if dropped from
heights in excess of 20 ft (6 m).

This device complies with Par t 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 (8 in.) from all persons.

Installation

Reference Manual

GROUND THE DEVICE

INSTALL THE POWER

MODULE

POSITION THE ANTENNA

UTILIZE THE DISPLAY

Threaded Tank

Connection

REVIEW MOUNTING

CONSIDERATIONS

REVIEW MOUNTING

PREPARATIONS

MOUNT DEVICE ON

TAN K

Measure Tank Height

Shorten the Probe

Mount a Centering disc

for Pipe Installations

Tank Connection

with Flange

Tank Connection

with Loose Flange

(“plate design”)

ANCHOR THE PROBE

Recommended

Mounting Position

Flange Connection on

Nozzles

Non-metallic tanks

Tank Connection

with Tri Clamp

Optional

Segmented Probe

00809-0100-4308, Rev BB

3.2 Installation procedure

Follow these steps for proper installation:

Installation

October 2016

Installation

15

Installation

A

C

B

October 2016

3.3 Review mounting considerations

Before installing the Rosemount 3308 Series Transmitter, consider recommendations for sufficient free
space, mounting position and special needs for non-metallic tanks.

3.3.1 Recommended mounting position

When finding an appropriate mounting position for the transmitter, the conditions of the tank must be
carefully considered. The transmitter should be mounted so that the influence of disturbing objects is
reduced to a minimum. For easy access to the transmitter make sure that it is mounted with sufficient
service space.

Figure 3-1. Mounting Position

Reference Manual

00809-0100-4308, Rev BB

A. Inlet pipe C. Heating coils
B. Agitator

The following guidelines should be considered when mounting the transmitter:

 Do not mount close to inlet pipes.
 Do not mount close to agitators. If the probe can move to within 12 in. (30 cm) away from an agitator,

the probe should be anchored. See “Anchor the probe” on page 30 for more information.

 If the probe tends to sway due to turbulent conditions in the tank, the probe should be anchored. See

“Anchor the probe” on page 30 for more information.

 Avoid mounting close to heating coils.
 Position the probe such that it is subject to a minimum of lateral force.
 Make sure the probe does not come into contact with the nozzle or other objects in the tank.

16

Installation

Reference Manual

A

00809-0100-4308, Rev BB

 Make sure the nozzle does not extend into the tank.

Note

Violent fluid movements causing high sideway forces may break rigid probes.

If the probe is mounted close to a wall, nozzle or other tank obstruction, noise might appear in the level
signal. Therefore the following minimum clearance, according to Tab l e 3 - 1, must be maintained.

Figure 3-2. Free Space Requirement

Installation

October 2016

Installation

A. Clearance to tank wall

Table 3-1. Recommended Minimum Free Space to Tank Wall or Other Objects in the Tank

Probe type Condition Minimum free space

Rigid Single/Flexible Single/
Segmented Rigid Single Lead

Flexible Twin

Coaxial N/A 0 in. (0 mm)

Smooth metal wall 4 in. (100 mm)

Disturbing objects such as pipes and
beams, or rugged metal tank walls

Smooth metal wall 4 in. (100 mm)

Disturbing objects such as pipes and
beams, or rugged metal tank walls

16 in. (400 mm)

16 in. (400 mm)

17

Installation

A

B

October 2016

3.3.2 Flange connection on nozzles

Figure 3-3. Mounting in Nozzles

A. Maximum nozzle height B. Minimum nozzle diameter

Reference Manual

00809-0100-4308, Rev BB

The transmitter can be mounted in nozzles by using an appropriate flange. It is recommended that the
nozzle size is within the dimensions given in Tab l e 3 -2 .

Note

The probe must not be in contact with the nozzle (except for the coaxial probe).

Table 3-2. Nozzle Considerations

Rigid single lead
Flexible single
lead probe

Recommended
nozzle diameter

Minimum nozzle
diameter

Maximum nozzle
height

1. The Trim Near Zone (TNZ) function may be necessary or an Upper Null Zone (UNZ) setup may be required to mask the nozzle.

2. Recommended maximum nozzle height. For coaxial probes there is no limitation on nozzle height.

3. For nozzles taller than 4 in. (100 mm), the Long Stud version is recommended (option code LS) to prevent the flexible portion from touching

(1)

(2)

the edge of the nozzle.

4 in. (100 mm) or
more

1.5 in. (38 mm)

4 in. (100 mm)
+ nozzle diameter

probe/Segmented

rigid single lead

4 in. (100 mm) or

more

1.5 in. (38 mm) for

probe type 4A

2 in. (50 mm) for

probe type 4B and 4S

4 in. (100 mm)

(3)

+ nozzle diameter

Flexible twin
lead probe

4 in. (100 mm) or
more

2 in. (50 mm) > probe diameter

4 in. (100 mm)
+ nozzle diameter

Coaxial probe

> probe diameter

N/A

18

Installation