Rosemount 3308 Series Wireless Guided Wave Radar, 3308A Manuals & Guides

Reference Manual

00809-0100-4308, Rev CE

Rosemount™ 3308 Series Wireless Guided
Wave Radar, 3308A

March 2022

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,
ensure you thoroughly understand the contents before installing, using, or maintaining this product.

For technical assistance, contacts are listed below:

Customer Central

Technical support, quoting, and order-related questions.

• United States - 1-800-999-9307 (7:00 am to 7:00 pm CST)

• Asia Pacific- 65 777 8211

North American Response Center

Equipment service needs.

• 1-800-654-7768 (24 hours a day — includes Canada)

• Outside of these areas, contact your local Emerson representative.

NOTICE

Power module considerations.

• Each power module contains primary lithium/thionyl chloride batteries. 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 86

°F (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. Remove the power module prior to any re-shipping.

• Each Black Power Module (model number 701PBKKF) contains two “C” size primary lithium batteries. Primary lithium

batteries (charged or discharged) are regulated in transportation by the U. S. Department of Transportation, and are also
covered by IATA (International Air Transport Association), ICAO (International Civil Aviation Organization), and ARD (European
Ground Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure compliance with these or any
other local requirements. Consult current regulations and requirements before shipping.

• Each Blue Power Module (A0701PBU) contains two "D" size primary lithium batteries. Primary lithium batteries (charged or

discharged) are regulated in transportation by the U.S. Department of Transportation, and are also covered by IATA
(International Air Transport Association), ICAO (International Civil Aviation Organization), and ARD (European Ground
Transportation of Dangerous Goods). It is the responsibility of the shipper to ensure compliance with these or any other local
requirements. Please consult current regulations and requirements before shipping.

2

WARNING

Explosions could result in death or serious injury.

• Verify that the operating atmosphere of the transmitter 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 could cause 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.

• 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 these installation guidelines could result in death or serious injury.

• Verify that the operating atmosphere of the transmitter is consistent with the appropriate hazardous locations certifications.

• Ensure the transmitter is installed by qualified personnel and in accordance with applicable code of practice.

• Use the equipment only as specified. Failure to do so may impair the protection provided by the equipment.

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 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) may also jeopardize
safety and is not allowed under any circumstances.

WARNING

Physical access

Unauthorized personnel may potentially cause significant damage to and/or misconfiguration of end users’ equipment. This could
be intentional or unintentional and needs to be protected against.

Physical security is an important part of any security program and fundamental to protecting your system. Restrict physical access
by unauthorized personnel to protect end users’ assets. This is true for all systems used within the facility.

3

CAUTION

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

• 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 8 in. (20 cm) from all persons.

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.

CAUTION

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 Sales Representative.

4

Reference Manual Contents

00809-0100-4308 March 2022

Contents

Chapter 1 Introduction.............................................................................................................. 9

1.1 Using this manual........................................................................................................................ 9

1.2 Product recycling/disposal...........................................................................................................9

Chapter 2 Transmitter overview...............................................................................................11

2.1 Theory of operation................................................................................................................... 11

2.2 Measuring range........................................................................................................................14

2.3 Emerson Wireless...................................................................................................................... 15

2.4 Application characteristics.........................................................................................................15

2.5 Application examples.................................................................................................................17

2.6 Components of the transmitter................................................................................................. 18

2.7 Probe selection guide................................................................................................................ 20

Chapter 3 Installation...............................................................................................................23

3.1 Safety messages........................................................................................................................ 23

3.2 Installation procedure................................................................................................................24

3.3 Review mounting considerations...............................................................................................24

3.4 Review mounting preparations..................................................................................................32

3.5 Centering disc for pipe installations........................................................................................... 39

3.6 Anchor the probe.......................................................................................................................44

3.7 Mount device on tank................................................................................................................ 47

3.8 Ground the device..................................................................................................................... 69

3.9 Install the power module........................................................................................................... 70

3.10 Position the antenna................................................................................................................71

3.11 Utilize the device display..........................................................................................................72

Chapter 4 Configuration...........................................................................................................75

4.1 Overview................................................................................................................................... 75

4.2 Safety messages........................................................................................................................ 75

4.3 Configuration procedure........................................................................................................... 77

4.4 System readiness.......................................................................................................................77

4.5 Get started with your preferred configuration tool.....................................................................78

4.6 Join device to wireless network.................................................................................................. 81

4.7 Configure device using guided setup......................................................................................... 91

4.8 Run verify level...........................................................................................................................94

Chapter 5 Operation................................................................................................................ 95

5.1 Safety messages........................................................................................................................ 95

5.2 Device display screen messages.................................................................................................96

5.3 View measurement data............................................................................................................99

Reference Manual 5

Contents Reference Manual

March 2022 00809-0100-4308

5.4 Check device status................................................................................................................. 100

Chapter 6 Service and troubleshooting.................................................................................. 103

6.1 Safety messages...................................................................................................................... 103

6.2 Alert messages........................................................................................................................ 104

6.3 Troubleshooting guide............................................................................................................ 112

6.4 Service and troubleshooting tools............................................................................................116

6.5 Application challenges.............................................................................................................126

6.6 Replace power module............................................................................................................ 134

6.7 Replace the transmitter head...................................................................................................136

6.8 Replace the probe....................................................................................................................138

6.9 Service support........................................................................................................................139

Appendix A Specifications and reference data........................................................................... 141

A.1 Performance specifications......................................................................................................141

A.2 Functional specifications......................................................................................................... 149

A.3 Physical specifications............................................................................................................. 158

A.4 Spare parts and accessories..................................................................................................... 163

A.5 Dimensional drawings............................................................................................................. 179

Appendix B Product Certifications............................................................................................ 189

B.1 European directive information............................................................................................... 189

B.2 Ordinary location certification................................................................................................. 189

B.3 Telecommunication compliance..............................................................................................189

B.4 FCC and IC............................................................................................................................... 189

B.5 Installing equipment in North America.................................................................................... 190

B.6 USA..........................................................................................................................................190

B.7 Canada.................................................................................................................................... 191

B.8 Europe.....................................................................................................................................192

B.9 International............................................................................................................................192

B.10 Brazil......................................................................................................................................193

B.11 China.....................................................................................................................................193

B.12 Japan..................................................................................................................................... 193

B.13 Technical Regulations Customs Union (EAC)..........................................................................194

B.14 Additional certifications.........................................................................................................194

B.15 Approval drawings.................................................................................................................194

Appendix C High gain remote antenna option...........................................................................197

C.1 Safety messages......................................................................................................................197

C.2 Functional and physical specifications..................................................................................... 197

C.3 Review installation considerations...........................................................................................198

C.4 Transient/lightning considerations..........................................................................................199

C.5 Install the high gain remote antenna....................................................................................... 199

Appendix D Configuration parameters......................................................................................203

6 Rosemount 3308 Series

Reference Manual Contents

00809-0100-4308 March 2022

D.1 Menu overview of the Device Descriptor (DD)......................................................................... 203

D.2 Configuration parameters.......................................................................................................204

Appendix E Alert message mapping..........................................................................................225

E.1 Alert messages and descriptions..............................................................................................225

Reference Manual 7

Contents Reference Manual

March 2022 00809-0100-4308

8 Rosemount 3308 Series

Reference Manual Introduction

00809-0100-4308 March 2022

1 Introduction

1.1 Using this manual

The sections in this manual provide information on installing, configuring, operating, and
maintaining the Rosemount™ 3308 Series Transmitter.

The sections are organized as follows:

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.

Installation contains mechanical and electrical installation instructions.
Configuration provides instructions on how to configure and make the transmitter join the

wireless network.

Operation contains operation techniques such as viewing measurement data and display

functionality.

Service and troubleshooting provides troubleshooting techniques for the most common

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

Specifications and reference data supplies reference and specification data, as well as

ordering information.

Product Certifications contains hazardous locations certifications and approval drawings.
High gain remote antenna option contains specification and installation information of the

high gain remote antenna option.

Configuration parameters provides a menu overview for the Device Descriptor in AMS

Wireless Configurator and the handheld communicator. Description of the configuration
parameters is also included.

Alert message mapping outlines the most important alerts in the HART® command 48

Additional Status Field for Rosemount 3308 Series.

1.2 Product recycling/disposal

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

Reference Manual 9

Introduction Reference Manual

March 2022 00809-0100-4308

10 Rosemount 3308 Series

K

$

%

&

*+

)

,

('

-

Reference Manual Transmitter overview

00809-0100-4308 March 2022

2 Transmitter overview

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).

Figure 2-1: Guided Wave Radar Operating Principle

A. Reference peak

Reference Manual 11

B. Product surface peak
C. Product level

D. Interface peak

E. Interface level

F. Upper reference point
G. Probe length
H. Tank height

I. Zero reference point
J. Signal amplitude

K. Time

$

%

&

'

(

)

*

,+-

Transmitter overview Reference Manual

March 2022 00809-0100-4308

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.

See Figure 2-2 for a schematic overview of the signal processing.

Figure 2-2: Flowchart of the Signal Processing

2.1.1

2.1.2

2.1.3

A. Microwave module
B. A/D converter
C. Peak search

D. Peak interpolation

E. Echo identifier

F. Distance filtering
G. Variable calculation
H. Aout handler

I. LCD handler
J. HART

®

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.

12 Rosemount 3308 Series

$

(

)

%&'

Reference Manual Transmitter overview

00809-0100-4308 March 2022

2.1.4 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.

2.1.5 Upper Reference Point

The Upper Reference Point is located at the underside of the threaded adapter,
transmitter flange, or Tri-Clamp®, as illustrated in Figure 2-3.

Figure 2-3: Upper Reference Point

A. NPT
B. BSPP (G)
C. Flange

D. Tri-Clamp

E. Upper Reference Point

F. Total Probe Length

2.1.6

2.1.7

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.

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.

Reference Manual 13

$

%

&

%

'

Transmitter overview Reference Manual

March 2022 00809-0100-4308

2.1.8 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.

2.2 Measuring range

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 2-4 illustrates how the measuring range is related to the Blind Zones and the areas

with reduced accuracy.

Figure 2-4: Blind Zones and Areas with Reduced Accuracy

A. Upper Blind Zone
B. Reduced accuracy
C. Recommended measuring range

14 Rosemount 3308 Series

D. Lower Blind Zone

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.

Related information

Accuracy over measuring range

I

N

E

X

P

L

O

S

I

V

E

A
T

M

O
S

P

H

E

R
E

K
E

E

P

T
I

G

H

T

W

H

E

N

C

I

R

C

U

I

T

Reference Manual Transmitter overview

00809-0100-4308 March 2022

2.3 Emerson Wireless

Emerson Wireless is a self-organizing network 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 2-5. Multiple communication paths are managed and analyzed in
parallel to assure optimal communication and sustained network reliability even if
obstructions are introduced.

Figure 2-5: Emerson Wireless Network

Gateways interface with existing host systems using industry standard protocols, and
native integration into DeltaV™ and Ovation™ is transparent and seamless.

Interference from other radios, Wi-Fi®, 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.

The Rosemount 3308A is a member of the Emerson Wireless portfolio, whose wireless
network experience totals billions of operating hours, hundreds of thousands of field
devices, and tens of thousands of networks around the world.

2.4 Application characteristics

2.4.1 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.

Reference Manual 15

$

%

%

Transmitter overview Reference Manual

March 2022 00809-0100-4308

2.4.2 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.

2.4.3 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 2-6: Interface Level Measurement

A. Product 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 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).

16 Rosemount 3308 Series

Reference Manual Transmitter overview

00809-0100-4308 March 2022

Related information

Interface measurements

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. For assistance
with emulsion applications, consult your local Emerson representative.

2.5 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.

Storage and buffer tanks

The Rosemount 3308 Series Transmitter is ideal for storage or buffer tanks for almost any
liquid, such as oil, gas condensate, water, or chemicals.

Low pressure separators

The Rosemount 3308 Series Transmitter can measure both level and interface level, such
as for separator applications.

Reference Manual 17

Transmitter overview Reference Manual

March 2022 00809-0100-4308

Waste tanks and sump pits

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

Open applications —ponds, basins, sumps

The Rosemount 3308 Series Transmitter can be installed in open air to measure liquids not
contained in a tank.

Chamber applications

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

2.6 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, segmented rigid single lead, flexible twin lead, and coaxial.

18 Rosemount 3308 Series

$

&

%

(

)

+,-./

*

'

Reference Manual Transmitter overview

00809-0100-4308 March 2022

Figure 2-7: Transmitter Components

A. Radar electronics
B. Flanged process connections
C. Probe

D. Dual compartment housing

E. Threaded process connections

F. BSPP (G)
G. NPT
H. Flexible single lead with weight

I. Rigid single lead
J. Flexible twin lead with weight

K. Coaxial

L. Segmented rigid single lead probe

Reference Manual 19

Transmitter overview Reference Manual

March 2022 00809-0100-4308

2.7 Probe selection guide

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)

Flexible single lead Rigid single lead,

segmented rigid
single lead

Measurements

Level G G G G

Interface (liquid/
liquid)

Process medium characteristics

Changing density G G G G

Changing dielectric

Wide pH variations G G G G

Pressure changes G G G G

Temperature changes G G G G

Condensing vapors G G G G

Bubbling/boiling
surfaces

Foam (mechanical
avoidance)

Foam (top of foam
measurement)

G G G G

(2)

G G G G

G G G G

NR NR NR AD

AD AD AD NR

Flexible twin lead Coaxial

(1)

Foam (foam and liquid
measurement)

Clean liquids G G G G

Liquid with dielectric

(3)

<2.0

Coating liquids

Viscous liquids

Crystallizing liquids AD AD NR NR

Solids/Powders NR NR NR NR

Fibrous liquids G G NR NR

20 Rosemount 3308 Series

(4)

(4)

AD AD AD NR

AD AD AD AD

G G NR NR

G G AD NR

Reference Manual Transmitter overview

00809-0100-4308 March 2022

Table 2-1: Probe Selection Guide (continued)

Flexible single lead Rigid single lead,

segmented rigid
single lead

Tank environment considerations

Probe is close (<12

NR NR AD G
in./30 cm) to
disturbing objects

Tall and narrow

AD AD AD G
mounting nozzles

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

Probe might touch

NR NR NR G
nozzle / disturbing
object

Liquid or vapor spray

NR NR NR G
might touch probe

High turbulence AD

Turbulent conditions

(5)

G AD

AD NR AD NR
causing breaking
forces

Non-metallic tanks or

AD

(6)

AD

(6)

open atmosphere
applications

Flexible twin lead Coaxial

AD

(5)

(6)

G

G

(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) See Table A-2 for more information.
(4) See Table A-1 for more information.
(5) Ok If probe is anchored.
(6) Not suitable in applications with disturbing EMC from nearby equipment.

Reference Manual 21

Transmitter overview Reference Manual

March 2022 00809-0100-4308

22 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

3 Installation

3.1 Safety messages

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

WARNING

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

• Ensure 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 atmosphere of the transmitter 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 could cause 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.

Reference Manual 23

Installation

March 2022 00809-0100-4308

Reference Manual

WARNING

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.

3.2 Installation procedure

Follow these steps for proper installation:

Procedure

1. Review installation considerations.

2. Review mounting preparations.
a) Measure tank height.

b) Optional: Shorten the probe.

c) Optional: Mount a centering disc for pipe installations.

d) Optional: Anchor the probe.

3. Mount device on tank.

4. Ground the device.

5. Install the power module.

6. Position the antenna.

7. Utilize the display.

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

24 Rosemount 3308 Series

Recommended mounting position for liquids

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, ensure that it is mounted with sufficient service space.

&

%

$

Reference Manual

00809-0100-4308 March 2022

Figure 3-1: Mounting Position

Installation

A. Inlet pipe
B. Agitator
C. Heating coils

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.

• If the probe tends to sway due to turbulent conditions in the tank, the probe should be

anchored.

• Avoid mounting close to heating coils.

• Position the probe such that it is subject to a minimum of lateral force.

• The probe should not come into contact with the nozzle or other objects in the tank.

Note

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

3.3.2

Free space requirement

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 Table

3-1, must be maintained.

Reference Manual 25

/

Installation Reference Manual

March 2022 00809-0100-4308

Figure 3-2: Free Space Requirement

L. Clearance to tank wall

Table 3-1: Recommended Minimum Free Space for Optimal Performance

Probe type Condition Minimum clearance

(L)

Rigid single lead/Segmented rigid single lead

Flexible single Smooth metal tank wall 4 in. (100 mm)

(1)

Coaxial

Flexible twin N/A 4 in. (100 mm)

(1) Minimum clearance from tank bottom for the coaxial and rigid single probes is 0.2 in. (5 mm).

(1)

Smooth metal tank wall 4 in. (100 mm)

Disturbing objects such as pipes and beams

16 in. (400 mm)

Plastic, concrete or rugged metal tank wall

Disturbing objects such as pipes and beams

16 in. (400 mm)

Plastic, concrete or rugged metal tank wall

N/A 0 in. (0 mm)

26 Rosemount 3308 Series

$

%

&

Reference Manual Installation

00809-0100-4308 March 2022

3.3.3 Flange connection on nozzles

Figure 3-3: Mounting in Nozzles

A. Maximum nozzle height
B. Minimum nozzle diameter
C. Confirm the nozzle does not extend into the tank.

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 Table 3-2.

Note

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

Table 3-2: Nozzle Considerations for Optimal Performance

Description 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

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

(3) For nozzles taller than 4 in. (100 mm), the long stud version is recommended (option code LS) to

(1)

(2)

required to mask the nozzle.

height.

prevent the flexible portion from touching the edge of the nozzle.

4 in. (100 mm) or
more

1.5 in. (38 mm) 1.5 in. (38 mm)

4 in. (100 mm) +
nozzle diameter

Rigid single lead
probe/
Segmented rigid
single lead

4 in. (100 mm) or
more

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

Reference Manual 27

Installation Reference Manual

March 2022 00809-0100-4308

3.3.4 Installation in still pipe/chamber

General chamber considerations

Dimensioning the chamber/pipe correctly and selecting the appropriate probe is key to
the success in these applications. When selecting a smaller chamber/pipe diameter, such
as 2-in., a flexible probe is not suitable due to the chance of it coming into contact with the
walls. Also, relatively large side inlets may interfere with the signal.

When gas lift and/or turbulence may occur (e.g. boiling hydrocarbons), a 3- or 4-in.
chamber/pipe diameter is recommended for maximum measurement reliability. This is
especially true in high pressure and high temperature installations.

Table 3-3: Recommended and Minimum Chamber/Still Pipe Diameters for Different
Probes

Probe type Recommended diameter Minimum diameter

Rigid single/segmented rigid
single

Flexible single 4 in. (100 mm) Consult your local Emerson

Flexible twin

Coaxial 3 or 4 in. (75 or 100 mm) 1.5 in. (37.5 mm)

(1) The center rod must be placed more than 0.6 in. (15 mm) away from the pipe wall.

(1)

3 or 4 in. (75 or 100 mm) 2 in. (50 mm)

representative

4 in. (100 mm) Consult your local Emerson

representative

Note

Metal pipes are preferred, especially in applications with low dielectric constant, to avoid
disturbances from objects near the pipe.

For more information and installation requirements, refer to the Best Practices for Using
Radar in Still Pipes and Chambers Technical Note.

Related information

Dimensional drawings

Rosemount chamber

A Rosemount chamber allows external mounting of process level instrumentation. It
supports a variety of process connections, and optional drain and vent connections. The
standard Rosemount chambers are designed according to ASME B31.3. Rosemount
chambers compliant with the Pressure Equipment Directive (PED) are available. Customer
specific engineered solutions for Rosemount chambers are available upon request. Use
option code XC to order together with the Rosemount 3308A Series Transmitters.

28 Rosemount 3308 Series

'

&

&

(

$$

%

Reference Manual Installation

00809-0100-4308 March 2022

Figure 3-4: Side-to-Side and Side-to-Bottom Chambers

A. Dimension A
B. Dimension B
C. Dimension CC

D. Side-to-side chamber

E. Side-to-bottom chamber

When mounting in a Rosemount chamber, see Table 3-4 for information on probe length
determination.

Table 3-4: Probe Length Determination for Rosemount CMB Chambers

Chamber type Probe length

Side-to-side chamber A + CC + B - 80 mm

Side-to-bottom chamber A + CC - 80 mm

Use a centering disc the same diameter as the chamber if the probe length >3.3 ft. (1 m).
See Table 3-8 for which disc to use.

Existing chamber

A Rosemount 3308 Series Transmitter is the perfect replacement in an existing displacer
chamber. Proprietary flanges are offered, enabling use of existing chambers to make
installation easy.

Reference Manual 29

$

&

%

Installation

Reference Manual

March 2022 00809-0100-4308

Figure 3-5: Existing Displacer Chamber

A. Replace chamber flange
B. Probe length
C. Displacer length

Considerations when changing to Rosemount 3308 Series:

• The Rosemount 3308 Series flange choice and probe length must be correctly matched

to the chamber. Both standard ASME and EN (DIN), as well as proprietary chamber
flanges, are available. See Proprietary flanges to identify the proprietary flanges.

• See Table 3-8 for guidelines on which disc size to use.

• See Table 3-5 for guidelines on the required probe length.

Table 3-5: Required Probe Length in Chambers

Chamber manufacturer Probe length

Major torque-tube manufacture (249B, 249C,
249K, 249N, 259B)

Masoneilan™ (torque tube operated),
proprietary flange

Other - torque tube

Magnetrol® (spring operated)

Others - spring operated

(1) If flushing ring is used, add the ring height to the probe length.
(2) For other manufacturers, there are small variations. This is an approximate value; actual length

should be verified.

(3) Lengths vary depending on model, SG, and rating, and should be verified.

(2)

(3)

(2)

Displacer + 9 in. (229 mm)

Displacer + 8 in. (203 mm)

Displacer + 8 in. (203 mm)

Displacer + between 7.8 in. (195 mm) to 15 in.
(383 mm)

Displacer + 19.7 in. (500 mm)

(1)

For additional information, see the Replacing Displacers with Guided Wave Radar

Technical Note.

Probe type in chamber considerations

When installing a Rosemount 3308A in a chamber, the single lead probe is recommended.
The probe must not touch the chamber wall, should extend the full height of the chamber,

but not touch the bottom of the chamber.

30 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

The probe length determines if a single rigid or single flexible probe should be used:

• Less than 19.7 ft. (6.0 m): Rigid single probe is recommended. Use a centering disc for

probe > 3.3 ft. (1 m). When mounting space is limited, use a flexible single probe with a
weight and centering disc.

• More than 19.7 ft. (6.0 m): Use flexible single probe with a weight and centering disc.

3.3.5 Installation in non-metallic tanks and open-air applications

Avoid major sources of electrical disturbance in proximity of the installation (e.g. electrical
motors, stirrers, servo mechanisms).

Figure 3-6: Avoid Electromagnetic Disturbances

For clean liquids, use a coaxial probe to reduce effect of potential electrical disturbances.

Figure 3-7: Coaxial Probe in an Open-Air Application

Reference Manual 31

$

%

Installation Reference Manual

March 2022 00809-0100-4308

For optimal single lead probe performance in non-metallic tanks, the probe must be
mounted with a metal flange, or screwed in to a metal sheet (d > 14 in./350 mm) if a
threaded version is used.

Figure 3-8: Mounting in Non-Metallic Tanks

A. Metal flange
B. Metal sheet (d > 14 in./350 mm)

3.3.6

Minimum distance between two single probes

When installing multiple Rosemount 3308A Level Transmitters with single probes in the
same tank, ensure to place the devices at proper distance from each other to avoid the risk
of interference caused by cross-talk. Table 3-6 provides recommended minimum distance
between two probes. A coaxial probe or a probe installed in a still pipe will not cause any
cross-talk.

Table 3-6: Minimum Distance between Single Probes

Product Minimum distance between probes

Oil (DC = 2.1) 5.2 ft. (1.6 m)

Water (DC = 80) 3.3 ft. (1.0 m)

3.4 Review mounting preparations

3.4.1 Measure tank height

The Tank Height is defined as the measured distance from the Upper Reference Point to
the Zero Reference Point.

32 Rosemount 3308 Series

$

&

%

Reference Manual Installation

00809-0100-4308 March 2022

Figure 3-9: Measure Tank Height

A. Upper Reference Point
B. Tank Height
C. Zero Reference Point

3.4.2

Shorten the probe

In order to leave some clearance distance between the probe end and the tank bottom,
the probe might have to be shortened. The goal is to have the probe hang straight so that
it does not touch the wall; 2 in. (5 cm) is a suggested value. The probe can be shortened in
field. Use the following form to calculate the probe length:

Probe length = tank height - 2 in. (5 cm)
After shortening the probe make sure to update the transmitter configuration to the new

probe length, see Probe length.

Reference Manual 33

%

$

1 2

3

4

5

6

7

8

0

Installation Reference Manual

March 2022 00809-0100-4308

Figure 3-10: Calculate Probe Length

A. Probe Length
B. 2 in. (5 cm) clearance

Shorten the flexible single/twin lead probe

Prerequisites

Note

The PTFE covered probes must not be cut in field.

Procedure

1. Mark where to cut the probe.

34 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

2. Remove enough spacers to make place for the weight (only flexible twin lead
probes).

3. Loosen the weight.

4. Slide the weight up.

Reference Manual 35

Installation

March 2022 00809-0100-4308

5. Cut the probe at the mark.

6. Fasten the weight with the following torque:

• Small weight (W1): 5 Nm

• Short weight (W2): 5 Nm

Reference Manual

• Heavy weight (W3): 5 Nm

• Weight, flexible twin: 6 Nm

Postrequisites

After shortening the probe be sure to update the transmitter configuration to the new
probe length.

Related information

Probe length

Shorten the rigid single lead probe

Prerequisites

The minimum probe length is 15.7 in. (400 mm).

Note

The PTFE covered probes must not be cut in field.

36 Rosemount 3308 Series

1 2 3

4

5

6

7

8

0

Reference Manual Installation

00809-0100-4308 March 2022

Note

Ensure the lead is fixed while cutting.

Procedure

1. Mark where to cut the probe.

2. Cut the probe at the mark.

Postrequisites

After shortening the probe be sure to update the transmitter configuration to the new
probe length.

Related information

Probe length

Reference Manual 37

/

/

$

&

'

%

Installation Reference Manual

March 2022 00809-0100-4308

Shorten the coaxial probe

Prerequisites

Figure 3-11: Maximum Shortening of Coaxial Probe

A. Ordered probe length (L) > 49 in. (1250 mm)
B. Ordered probe length (L) ≤ 49 in. (1250 mm)
C. Maximum shortening length: 23.6 in. (600 mm)

D. Minimum probe length: 15.7 in. (400 mm)

Procedure

1. Mark where to cut the probe.

• Pipes longer than 49 in. (1250 mm) can be shortened by as much as 23.6 in.

(600 mm).

• Pipes shorter than 49 in. (1250 mm) can be cut as long as the remaining length

is not less than 15.7 in. (400 mm).

38 Rosemount 3308 Series

Reference Manual

00809-0100-4308 March 2022

2. Insert the centering piece.
The centering piece is delivered from factory and should be used to prevent the

spacers centering the rod from coming loose.

3. Cut the tube to the desired length.

4. Move the centering piece.

Installation

5. Cut the rod inside the tube. Ensure the rod is fixed with the centering piece while
cutting.

Postrequisites

After shortening the probe be sure to update the transmitter configuration to the new
probe length.

Related information

Probe length

3.5 Centering disc for pipe installations

To prevent the probe from contacting the chamber or pipe wall, centering discs are
available for flexible single, rigid single, and flexible twin lead probes. The disc is attached
to the end of the probe. Discs are made of stainless steel, Alloy C-276, Duplex 2205, or
PTFE.

For the segmented rigid single lead probe, up to five PTFE centering discs can be mounted
along the probe, but keep a minimum distance of two segments between the discs.
Additionally, a disc in SST or PTFE (part number 03300-1655-xxxx) can be attached to the
end of the probe.

Reference Manual 39

'

Installation Reference Manual

March 2022 00809-0100-4308

When mounting a centering disc, it is important that it fits correctly in the chamber/pipe.
See Figure 3-12 for Dimension D. Table 3-8 shows which centering disc diameter to
choose for a particular pipe.

Figure 3-12: Dimension D for Centering Discs

Table 3-7: Centering Disc Dimensions

Disc size Actual disc diameter (D)

2-in. 1.8 in. (45 mm)

3-in. 2.7 in. (68 mm)

4-in. 3.6 in. (92 mm)

6-in. 5.55 in. (141 mm)

8-in. 7.40 in. (188 mm)

Table 3-8: Centering Disc Size Recommendation for Different Pipe Schedules

Pipe size Pipe schedule

5s, 5 and 10s,10 40s, 40 and 80s, 80 120 160

2-in. 2-in. 2-in. N/A

3-in. 3-in. 3-in. N/A

4-in. 4-in. 4-in. 3-in. 3-in.

5-in. 4-in. 4-in. 4-in. 4-in.

6-in. 6-in. 6-in. 4-in. 4-in.

7-in. N/A

(1)

6-in. N/A

8-in. 8-in. 8-in. 6-in. 6-in.

(1) Schedule is not available for pipe size.
(2) No centering disc is available.

(1)

(1)

(1)

N/A

2-in.

N/A

(2)

(1)

40 Rosemount 3308 Series

13 mm

Reference Manual

00809-0100-4308 March 2022

Installation

3.5.1 Mount a centering disc on flexible single/twin lead probe

Procedure

1. Mount the centering disc at the end of the weight.

3.5.2

2. Secure the bolt by folding the tab washer.

Mount a centering disc on rigid single lead probe (8 mm)

Note

Centering discs shall not be used with PTFE covered probes.

Reference Manual 41

$

Installation Reference Manual

March 2022 00809-0100-4308

Procedure

1. Drill one hole using the drilling fixture (included in your shipment).

2. Mount the bushing, centering disc, and washer at the probe end.

Note

Do not mount the washer (A) if the centering disc material is PTFE, Alloy C-276,
Duplex 2205, or Alloy 400.

3. Insert the split pin through the bushing and the probe.

4. Secure the split pin.

42 Rosemount 3308 Series

0.16 in. (4 mm)

0.08 in. (2 mm)

Reference Manual Installation

00809-0100-4308 March 2022

3.5.3 Mount a centering disc on rigid single lead probe (13 mm)

Procedure

1. Drill two holes using the drilling fixture (included in your shipment).

2. Mount the bushings and centering disc at the probe end.

3. Adjust distance by shifting hole for split pin in lower bushing.

Reference Manual 43

Installation

Reference Manual

March 2022 00809-0100-4308

4. Insert the split pins through the bushings and the probe.

5. Secure the split pins.

3.6 Anchor the probe

In turbulent tanks it may be necessary to fix the probe. Depending on the probe type,
different methods can be used to guide the probe to the tank bottom. This may be needed
in order to prevent the probe from hitting the tank wall or other objects in the tank, as well
as preventing a probe from breaking.

Flexible single/twin lead probe

The flexible single lead probe itself can be used for anchoring. Pull the probe rope through
a suitable anchoring point (e.g. a welded eye), and fasten it with a chuck.

Table 3-9: Required Torque and Hex Key Dimensions

Probe Required torque Hex key dimension

Flexible twin lead 4.4 ft-lb (6 Nm) 4 mm

Flexible single lead 4 mm wire, stainless

steel

4 mm wire, Alloy C-276 1.8 ft-lb (2.5 Nm) 3 mm

4 mm wire, Alloy 400 1.8 ft-lb (2.5 Nm) 3 mm

4 mm wire, Duplex
2205

The length of the loop will add to the Blind Zone. The location of the chuck will determine
the beginning of the Blind Zone.

3.7 ft-lb (5 Nm) 4 mm

1.8 ft-lb (2.5 Nm) 3 mm

44 Rosemount 3308 Series

$

%

Reference Manual Installation

00809-0100-4308 March 2022

The Probe Length should be configured as the distance from the Upper Reference Point to
the top of the chuck.

Figure 3-13: Flexible Single Lead Probe with Chuck

A ring (customer supplied) can be attached to the weight in a threaded (M8x14) hole at
the end of the weight. Attach the ring to a suitable anchoring point.

Figure 3-14: Flexible Twin/Single Lead Probe with Weight and Ring

A. Weight with internal threads M8x14
B. Ring

A magnet (customer supplied) can be fastened in a threaded (M8x14) hole at the end of
the weight. The probe can then be guided by placing a suitable metal plate beneath the
magnet.

Reference Manual 45

$

$

Installation Reference Manual

March 2022 00809-0100-4308

Figure 3-15: Flexible Twin/Single Lead Probe with Weight and Magnet

A. Magnet

Rigid single lead probe

The rigid single lead probe can be guided by a tube welded on the tank bottom. Tubes are
customer supplied. Ensure that the probe can move freely in order to handle thermal
expansion. The measurement accuracy will be reduced close to the tube opening.

Figure 3-16: Rigid Single Lead Probe with Tube

A. Drain

Coaxial probe

The coaxial probe can be secured to the tank wall by fixtures fastened to the tank wall.
Fixtures are customer supplied. Ensure the probe can move freely due to thermal
expansion without getting stuck in the fixture.

46 Rosemount 3308 Series

$

$

Reference Manual Installation

00809-0100-4308 March 2022

Figure 3-17: Coaxial Probe Secured to the Tank Wall

A. Ø 1.1 in. (28 mm)

The coaxial probe can be guided by a tube welded on the tank bottom. Tubes are
customer supplied. Ensure that the probe can move freely in order to handle thermal
expansion. The measurement accuracy will be reduced close to the tube opening.

Figure 3-18: Coaxial Probe with Tube

A. Drain

3.7 Mount device on tank

Mount the transmitter with flange on a nozzle on top of the tank. The transmitter can also
be mounted on a threaded or Tri-Clamp® connection.

3.7.1

Threaded tank connection

Prerequisites

Note

PTFE covered probes must be handled carefully to prevent damage to the coating.

Reference Manual 47

Installation Reference Manual

March 2022 00809-0100-4308

Procedure

1. For adapters with BSPP (G) threads, place a suitable gasket on top of the tank
flange.

2. For adapters with NPT threads, use anti-seize paste or PTFE tape according to your
site procedures.

3. Lower the transmitter and probe into the tank.

48 Rosemount 3308 Series

60 mm

52 mm / 60 mm

60 mm

Torque 30 Lbft (40 Nm)

Reference Manual Installation

00809-0100-4308 March 2022

4. Loosen the nut that connects the transmitter head to the probe slightly.

5. Screw the adapter into the process connection.

6. Rotate the transmitter head so the device display faces the desired direction.

7. Tighten the nut.

Reference Manual 49

$

Installation Reference Manual

March 2022 00809-0100-4308

Postrequisites

Continue with the grounding step.

3.7.2 Tank connection with flange

Prerequisites

Note

PTFE covered probes must be handled carefully to prevent damage to the coating.

Procedure

1. Place a suitable gasket on top of the tank flange.

Note

Gasket should not be used for PTFE covered probe with protective plate.

A. PTFE covered probe with protective plate

2. Lower the transmitter and probe with flange into the tank.

50 Rosemount 3308 Series

60 mm

Reference Manual Installation

00809-0100-4308 March 2022

3. Tighten bolts and nuts with sufficient torque for the flange and gasket choice.

4. Loosen the nut that connects the transmitter head to the probe slightly.

5. Rotate the transmitter head so the device display faces the desired direction.

Reference Manual 51

60 mm

Torque 30 Lbft (40 Nm)

60 mm

Installation Reference Manual

March 2022 00809-0100-4308

6. Tighten the nut.

Postrequisites

Continue with the grounding step.

3.7.3

Tank connection with loose flange (plate design)

The transmitter is delivered with head, flange and probe assembled into one unit. If, for
some reason, these parts have been disassembled, mount the transmitter as described
below.

Prerequisites

Note

PTFE covered probes must be handled carefully to prevent damage to the coating.

Procedure

1. Mount the flange on the probe and tighten the flange nut.

2. Place a suitable gasket on top of the tank flange.

52 Rosemount 3308 Series

60 mm

Torque 30 Lbft (40 Nm)

Reference Manual Installation

00809-0100-4308 March 2022

3. Lower the probe with flange into the tank.

4. Tighten bolts and nuts with sufficient torque for the flange and gasket choice.

5. Mount the transmitter head.

Postrequisites

Continue with the grounding step.

Reference Manual 53

4X

A

B

4X

3X

Installation

March 2022 00809-0100-4308

Reference Manual

3.7.4 Bracket mounting

Procedure

1. Mount the bracket to the pipe/wall.
On pipe:

3.7.5

A. Horizontal pipe
B. Vertical pipe

On wall:

2. Mount the transmitter with probe to the bracket.

Tank connection with Tri-Clamp

®

54 Rosemount 3308 Series

Prerequisites

Note

PTFE covered probes must be handled carefully to prevent damage to the coating.

60 mm

Reference Manual Installation

00809-0100-4308 March 2022

Procedure

1. Place a suitable gasket on top of the tank flange.

2. Lower the transmitter and probe into the tank.

3. Tighten the clamp to the recommended torque (see the manufacturer’s instruction
manual).

4. Loosen the nut that connects the transmitter head to the probe slightly.

Reference Manual 55

60 mm

Torque 30 Lbft (40 Nm)

Installation Reference Manual

March 2022 00809-0100-4308

5. Rotate the transmitter head so the device display faces the desired direction.

6. Tighten the nut.

Postrequisites

Continue with the grounding step.

56 Rosemount 3308 Series

31.5

(800)

15.2

(385)

A

E

E

F

B

C

D

G

H

D

D

J

I

I

D

Reference Manual

Installation

00809-0100-4308 March 2022

3.7.6 Segmented probe

Segmented probe parts

Figure 3-19: Segmented Probe Parts

A. Safety ring
B. Screw
C. Top segment

D. Split pin

E. PTFE washer (optional)

F. Centering disc in PTFE (optional)
G. Middle segment
H. Bottom segment (length varies depending on total probe length)

I. Bushing (for the centering disc at the probe end)
J. Bottom centering disc in PTFE or stainless steel (optional)

Verifying probe length

Reference Manual 57

Segmented probe ordered with model code 4S

Before installation, verify the probe length (L) on the label. If the probe length needs to be
adjusted, see Adjust the probe length.

$

%

Installation Reference Manual

March 2022 00809-0100-4308

Figure 3-20: Label

A. Probe segments box
B. Probe length

Segmented probe ordered as spare part kit

Before installation, the number of segments that add up to the desired probe length must
be determined. Also, the bottom segment may need to be shortened. See Adjust the

probe length.

Assemble the segmented probe

Prerequisites

Note

If there is enough space beside the tank, the probe can be assembled before inserting it
into the tank.

58 Rosemount 3308 Series

7RS6HJPHQW

Reference Manual Installation

00809-0100-4308 March 2022

Procedure

1. Insert the stop screw to the top segment. Tighten approximately two turns.

2. Pre-assemble the safety ring.

Reference Manual 59

%RWWRP6HJPHQW

%RWWRP6HJPHQW

Installation Reference Manual

March 2022 00809-0100-4308

3. Optional: If ordered, mount the centering disc on the bottom segment of the
probe.

4. Insert the support tool.

60 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

5. Optional: If ordered, mount the centering disc.

• Maximum five pcs/probe

• Minimum two segments between each centering disc

6. Mount a middle segment (hand tight).

Reference Manual 61

Installation Reference Manual

March 2022 00809-0100-4308

7. Secure the split pin.

8. Insert the second support tool.

62 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

9. Remove the first support tool and lower the probe into the tank.

10. Repeat Step 5-Step 9 until all segments are mounted. Be sure to finish with the top
segment of the probe.

11. Seal and protect threads. Use anti-seize paste or PTFE tape according to your site
procedures.

Only for NPT threaded tank connection.

Reference Manual 63

$

&

'

(

%

Installation Reference Manual

March 2022 00809-0100-4308

12. Attach the probe to the device.

Note

For safety reasons, at least two people are needed when mounting the device. Hold
the device above the tank. High loads can break the support tool.

A. Flange/Tri-Clamp
B. Threaded
C. Gasket

D. Sealant on threads (NPT)

E. Gasket (BSPP (G))

64 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

13. Tighten the stop screw and slide the safety ring into the groove.

14. Remove the support tool.

Reference Manual 65

$

%

&

Torque 30 Lbft (40 Nm)

60 mm

Installation Reference Manual

March 2022 00809-0100-4308

15. Mount the device on the tank.

A. Flange
B. Tri-Clamp
C. Threaded

16. Rotate the housing to the desired direction.

17. Tighten the nut.

18. Continue with the grounding step.

66 Rosemount 3308 Series

/

Q

Q

<

<

<

<

Reference Manual Installation

00809-0100-4308 March 2022

Adjust the probe length

Procedure

1. Determine L, the desired probe length.

L, desired probe length:

2. Determine n, the number of middle segments needed for the desired probe length.
See Table 3-10.

n, number of middle segments:

3. Calculate Y, the length of the bottom segment. See Table 3-10.

Y, length of bottom segment:

4. Continue as follows:

Length of bottom segment (Y)

Y < 0.4 in. (10 mm)

Y ≥ 0.4 in. (10 mm)

Y = 31.5 in. (800 mm)

Action

• Continue with step 7. Do not use the

bottom segment.

• Continue with step 5 and cut the bottom

segment.

a. Add one extra middle segment to the

calculated n.

b. Continue with step 7.

Reference Manual 67

1 2

3

4

5

6

7

8

0

1 2

3

0

<

<

Installation Reference Manual

March 2022 00809-0100-4308

5. Mark where to cut the bottom segment.

6. Cut the bottom segment at the mark.

Note

Ensure the bottom segment is fixed while cutting.

68 Rosemount 3308 Series

Reference Manual

Installation

00809-0100-4308 March 2022

7. Optional: If a bottom centering disc is ordered, then drill two holes on the bottom
segment using the drilling fixture.

Table 3-10: Determination of Probe Segments for Standard Seal

Desired probe length (L) Number of

in. mm in. mm

15.8 ≤ L ≤ 47.2 400 ≤ L ≤ 1200 0 pc Y = L -15.8 Y = L - 400

47.2 < L ≤ 78.7 1200 < L ≤ 2000 1 pc Y = L - 47.2 Y = L - 1200

78.7 < L ≤ 110.2 2000 < L ≤ 2800 2 pcs Y = L - 78.7 Y = L - 2000

110.2 < L ≤ 141.7 2800 < L ≤ 3600 3 pcs Y = L - 110.2 Y = L - 2800

141.7 < L ≤ 173.2 3600 < L ≤ 4400 4 pcs Y = L - 141.7 Y = L - 3600

173.2 < L ≤ 204.7 4400 < L ≤ 5200 5 pcs Y = L - 173.2 Y = L - 4400

204.7 < L ≤ 236.2 5200 < L ≤ 6000 6 pcs Y = L - 204.7 Y = L - 5200

236.2 < L ≤ 267.7 6000 < L ≤ 6800 7 pcs Y = L - 236.2 Y = L - 6000

267.7 < L ≤ 299.2 6800 < L ≤ 7600 8 pcs Y = L - 267.7 Y = L - 6800

299.2 < L ≤ 330.7 7600 < L ≤ 8400 9 pcs Y = L - 299.2 Y = L - 7600

330.7 < L ≤ 362.2 8400 < L ≤ 9200 10 pcs Y = L - 330.7 Y = L - 8400

362.2 < L ≤ 393.7 9200 < L ≤ 10000 11 pcs Y = L - 362.2 Y = L - 9200

3.8 Ground the device

middle
segments (n)

Length of bottom segment
(Y)

The Rosemount 3308 Series Wireless Guided Wave Radar transmitter operates with the
housing grounded or floating. Floating systems can cause extra noise that may affect
many types of readout devices. If the signal appears noisy or erratic, grounding at a single
point may solve the problem.

Grounding of the electronics enclosure should be done in accordance with local and
national installation codes. Grounding is accomplished by using the external case
grounding terminal.

Non-metallic tanks

Ground device on non-metallic tanks (e.g. fiberglass tanks) to prevent electrostatic charge
build-up.

Reference Manual 69

$

Installation Reference Manual

March 2022 00809-0100-4308

There is one grounding screw connection provided, located on the housing (see Figure

3-21). The ground screw is identified by a ground symbol:

Figure 3-21: Ground Screw

A. Ground screw

Note

Always use facility recommended wiring practices.

Note

Flexible twin lead probe or coaxial probe are the recommended choice for non-metallic
tanks. Single lead probes are not suited for non-metallic tanks or open atmosphere
applications, due to high susceptibility to strong electromagnetic fields.

3.9 Install the power module

Prerequisites

Only use an Emerson approved power module designed for use with the Rosemount
3308A. The power modules are only compatible with their respective covers.

CAUTION

Use caution when handling the power module, it may be damaged if dropped from
heights in excess of 20 ft. (6 m).

70 Rosemount 3308 Series

$

Reference Manual Installation

00809-0100-4308 March 2022

Procedure

1. Install the power module into the transmitter.

2. Close the housing cover and tighten to site or safety specifications. Always ensure a
proper seal by tightening the electronics housing covers so that metal touches
metal, but do not overtighten.

A. Keep cover tight

Related information

Emerson Wireless Black SmartPower Solutions Product Data Sheet
Emerson Wireless Blue SmartPower Solutions Product Data Sheet

3.10 Position the antenna

The antenna should be positioned vertically, either straight up or straight down, and it
should be approximately 3 ft. (1 m) from any large structure, building, or conductive
surface to allow for clear communication to other devices.

Reference Manual 71

$%&'

Installation

March 2022 00809-0100-4308

Figure 3-22: Antenna Positioned Vertically

Reference Manual

3.11 Utilize the device display

If a device display is ordered, it will be shipped attached to the transmitter. The display is
ordered in the transmitter model number, option code M5.

3.11.1

Rotate the device display

The device display can be rotated in 90-degree increments.

Procedure

1. Squeeze the two black tabs on opposite sides of the display. Refer to Figure 3-23.

2. Gently pull out the display.

3. Rotate the display to the desired orientation, and snap the display into place.

Figure 3-23: Device Display

A. Display pins
B. Black tabs
C. Display

D. Cover

Note

If the device display four-pin connector is inadvertently removed from the interface
board, carefully reinsert the connector before snapping the device display back into
place.

72 Rosemount 3308 Series

Reference Manual Installation

00809-0100-4308 March 2022

3.11.2 Retrofitting

If an existing transmitter with no display (flat electronics cover) is to be retrofitted with a
new display, order spare part kit number 00753-9004-0001(aluminum display kit) or
00753-9004-0004 (stainless steel display kit). These kits contain an extended cover with a
display viewing window, a display board, and a display pin connector. Replace the flat
cover with the extended display and tighten.

Reference Manual 73

Installation Reference Manual

March 2022 00809-0100-4308

74 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

4 Configuration

4.1 Overview

This chapter provides information about configuration, configuration tools, and
configuration parameters.

• For a proper configuration, follow the steps listed in Configuration procedure.

• The configuration can be performed using one of the described configuration tools:

AMS Wireless Configurator or a handheld communicator. AMS Wireless Configurator
and Handheld communicator describe what preparations must be done in order to use
the configuration tool.

• Configuration parameters provides extended information about the configuration

parameters. An overview of Device Descriptor (DD) menu is presented in Menu

overview of the Device Descriptor (DD). All configuration parameters are described in
Configuration parameters.

4.2 Safety messages

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

Reference Manual 75

Configuration Reference Manual

March 2022 00809-0100-4308

WARNING

Explosions could result in death or serious injury.

• Verify that the operating atmosphere of the transmitter 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 could cause 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.

Process leaks could result in death or serious injury.

• Only qualified personnel should install the equipment.

• Handle the transmitter carefully.

• If the process seal is damaged, gas could escape from the tank when removing the

transmitter head from the probe.

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.

CAUTION

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 Part 15 of the FCC Rules. Operation is subject to the following
conditions:

• 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 8 in.

(20 cm) from all persons.

76 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

4.3 Configuration procedure

Follow these steps for proper configuration:

Procedure

1. Get started with your preferred configuration tool.

2. Join device to wireless network.
a) Insert power module.

b) Connect to device.

c) Configure update rate.

d) Obtain network ID and join key.

e) Enter network ID and join key.

f) Verify device joins Network.

3. Configure device.
a) Connect to device.

b) Configure using basic setup.

c) Consider optional setup.

4. Verify level.

4.4 System readiness

4.4.1 Confirm correct device driver

Verify the latest Device Descriptor (DD) is loaded on your systems to ensure proper
communication.

Procedure

1. Within Table 4-1, use the HART® Universal Revision and Device Revision numbers to

find the correct DD.

2. Download the latest DD at Emerson.com/DeviceInstallKits.

Reference Manual 77

Configuration Reference Manual

March 2022 00809-0100-4308

Table 4-1: Identification and Compatibility According to NAMUR NE 53

Release date Device identification DD identification Review

instructions

NAMUR
hardware
revision

December-15 1.0.xx 1.0.xx 2 7 1 00809-0100-

January-18 1.1.xx 1.1.xx 3 7 2 High accuracy

(1) NAMUR revision is located on the transmitter label. Differences in level 3 changes, signified above by xx, represent

minor product changes as defined per NE53. Compatibility and functionality are preserved and product can be used
interchangeably.

(2) HART software revision can be read using a HART capable configuration tool (select Overview → Device Information

→ Revisions).

(1)

NAMUR
software
revision

(1)

HART
software
revision

(2)

HART
universal
revision

Device
revision

Manual
document
number

4308

Review
functionality

Change
description

Extended length
and added probe
support

output and
Rosemount
VeriCase support

™

4.5 Get started with your preferred configuration tool

4.5.1 AMS Wireless Configurator

The AMS Wireless Configurator (version 12.0 or later) is the recommended software tool
for the wireless network devices, and is supplied with the Emerson Wireless Gateway.

Configuration can be done by connecting to the wireless network devices either point-to­point using a HART modem as shown in Figure 4-1, or wirelessly through the Gateway as
shown in Figure 4-2. Initial configuration to join a device to the wireless network must be
done point-to-point.

78 Rosemount 3308 Series

$

$

Reference Manual Configuration

00809-0100-4308 March 2022

Figure 4-1: Connect Point-to-Point using HART Modem

A. Communication terminals

Figure 4-2: Connect Wirelessly through the Wireless Gateway

A. Wireless Gateway

Download the latest Device Descriptor (DD)

The Device Descriptor (DD) is a configuration tool that is developed to assist the user
through the configuration.

Procedure

Download the latest DD at Emerson.com/DeviceInstallKits.

Add the DD to AMS Wireless Configurator

Prerequisites

The Rosemount 3308A DD is typically installed together with AMS Wireless Configurator.

Procedure

1. Close AMS Wireless Configurator.

Reference Manual 79

Configuration Reference Manual

March 2022 00809-0100-4308

2. Go to Start → Programs → AMS Device Manager and select Add Device Type.

3. Browse to the downloaded DD files and select Ok.

Need help?

In the Add Device Type application, select the Help button for more information on how to
complete this operation.

Configure the HART® modem interface

Before connecting to the device using a HART modem, the HART modem interface must
be configured in AMS Wireless Configurator.

Procedure

1. Close AMS Wireless Configurator.

2. Go to Start → Programs → AMS Device Manager and select Network
Configuration.

3. Select Add.

4. In the drop down list, select HART modem and then select Install.

5. Follow the on-screen instructions.

4.5.2

Need help?

In the Network Configuration application, select the Help button for more information on
how to complete this operation.

Configure the wireless network interface

Before connecting to the device wirelessly using a Wireless Gateway, the wireless network
must be configured in AMS Wireless Configurator.

Procedure

1. Close AMS Wireless Configurator.

2. Go to Start → Programs → AMS Device Manager and select Network
Configuration.

3. Select Add.

4. In the drop-down list select Wireless Network and then select Install.

5. Follow the on-screen instructions.

Need help?

In the Network Configuration application, select the Help button for more information on
how to complete this operation.

Handheld communicator

This section describes how to prepare the handheld communicator to communicate with
a Rosemount 3308A. The handheld communicator can be used to configure the device
with a point-to-point connection. Connect the leads on the handheld communicator to
the communication terminals of the device.

80 Rosemount 3308 Series

$

1 2 3

4 5 6

7 809

Reference Manual Configuration

00809-0100-4308 March 2022

Figure 4-3: Connect Point-to-Point using a Handheld Communicator

A. Communication terminals

Get the latest Device Descriptor (DD)

If the DD is not installed in your handheld communicator, see the appropriate handheld
communicator User’s Manual available at Emerson.com/FieldCommunicator for
instructions on how to update the handheld communicator with the latest DD.

4.6 Join device to wireless network

4.6.1 Power up the wireless device

Prerequisites

Make sure that the Wireless Gateway is installed and functioning properly before any
wireless field devices are powered.

Wireless devices should be powered up in order of proximity from the Gateway, beginning
with the closest. This will result in a simpler and faster network installation.

Procedure

1. Install the power module.

2. Enable Active Advertising on the Gateway to ensure that new devices join the
network faster.

Related information

Install the power module

Startup screen sequence

The following screens will be displayed in sequence when the power module is first
connected to the Rosemount 3308 Series Transmitter.

Reference Manual 81

Configuration Reference Manual

March 2022 00809-0100-4308

Table 4-2: Startup Screen Sequence

Sequence Description Screen

1. All segments ON Used to visually determine if there
are any bad segments on the device
display.

2. Device identification Identification string used to
determine the device type.

3. Device information: Tag User entered tag, 8 characters long.
This screen will not display if all
characters are blank.

4. Software revision Used to determine device software
revision.

5. Device information: Status This screen will only appear if there
is a critical error which may prevent
the device from operating correctly.
Check additional status screens for
more information about failure
source, refer to Table 5-1.

6. Primary variable Measurement value of mapped
primary variable.

82 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

Table 4-2: Startup Screen Sequence (continued)

Sequence Description Screen

7. Secondary variable Measurement value of mapped
second variable.

8. Electronics temperature Temperature value of device
electronics.

9. Supply voltage Voltage reading of the power
module.

> 6 V Good

5.2 V – 6.0 V Low

< 5.2 V Very low

10. Percent of range Level value in percent of total
measurement range.

11. Active alert present This screen will only appear if there
is at least one active alert present.
For detailed information of the
failure source and recommended
actions, go to the Active Alerts
screen in AMS Wireless Configurator
or the handheld communicator.
Refer to Check device status.

Some active alerts will be displayed
on the LCD display as part of the
diagnostic button screen sequence,
refer to Table 5-1.

Reference Manual 83

$

&

%

1 2 3

4 5 6

7 809

Configuration Reference Manual

March 2022 00809-0100-4308

4.6.2 Connect to device

Procedure

1. Connect a handheld communicator or a HART® modem to the communication
terminals as shown in Figure 4-4.

Figure 4-4: Connect to Device

4.6.3

A. Communication terminals
B. Handheld communicator
C. HART modem

2. Do one of the following:

• AMS Wireless Configurator:

a. Start AMS Wireless Configurator.

b. Select View → Device Connection View.

c. Double click the device under the HART modem.

• Handheld communicator:

— Turn on the handheld communicator and connect to the device.

Related information

AMS Wireless Configurator
Handheld communicator

Configure update rate

The Update Rate is the frequency at which a new measurement is transmitted over the
wireless network. The default update rate is one minute. This may be changed at

84 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

commissioning, or at any time via AMS Wireless Configurator or a handheld
communicator. The Update Rate is user selectable from 4 seconds to 60 minutes.

Procedure

1. Select Configure → Guided Setup → Wireless Setup.

2. Select Configure Update Rate, and follow the instructions.

Note

Set the Update Rate so that there is enough safety margin in the system for
high/low alerts. If the time between each update is too long, the high/low alerts
may be triggered too late.

Postrequisites

Run Check Level Response to make sure that configured Update Rate is sufficient for the
application.

Related information

Consider optional setup

4.6.4

Obtain network ID and join key

In order to communicate with the Wireless Gateway, and ultimately the host system, the
Rosemount 3308A must be configured to communicate on the wireless network. This step
is the wireless equivalent of connecting wires from a device to the host system.

Procedure

From the Wireless Gateway's integrated web interface, select System Settings →
Network → Network Settings.

Figure 4-5: Gateway Network Settings

Reference Manual 85

Configuration Reference Manual

March 2022 00809-0100-4308

4.6.5 Enter network ID and join key

The device must be configured with the same Network ID and Join Key as the Gateway in
order to join the network.

Procedure

1. Select Configure → Guided Setup → Wireless Setup.

2. Select Join Device to Network and follow on-screen the instructions.

Postrequisites

If the device is not to be commissioned yet, remove the power module and fasten the
housing cover. This is to conserve power module life and to ensure safe transportation.
The power module should be inserted only when the device is ready to be commissioned.

4.6.6

Verify device joins network

Network connection can be verified in four ways, further described in this section:

• At the device display

• Using the AMS Wireless Configurator

• In the Wireless Gateway's integrated web interface

• Using the handheld communicator

If the Rosemount 3308A was configured with the Network ID and Join Key, and sufficient
time has passed, the device should be connected to the network. It usually takes a few
minutes for the device to join the network.

Related information

Troubleshooting guide

Verify by device display

Procedure

1. Unscrew the device display cover.

86 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

2. Press the DIAG button.
The display will show: Tag, Device Serial Number, Software Revision, Network ID,

Network Connection Status, and Device Status screens.

When the network diagnostic status is displayed as “NETWK OK”, the device has
successfully joined the network.

Network connection status screens

When joining the wireless network, the status displayed will be changed through the
sequence until the device finally has joined the network. Table 4-3 presents the different
network connection status screens.

Reference Manual 87

Configuration Reference Manual

March 2022 00809-0100-4308

Table 4-3: Network Connection Status Screens

Screen Status Description

Network Unknown The device is still in the process of

being activated.

Network Restarted The device has just restarted.

Network Idle The device is starting to join the

process.

Disconnected from Network The device is in a disconnected state

and requires a “Force Join”
command to join the network.

Searching for Network The device is searching for the

network.

Joining the Network The device is attempting to join the

network.

88 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

Table 4-3: Network Connection Status Screens (continued)

Screen Status Description

Connected but in a “quarantined”
state

Connected with Limited Bandwidth The device is joined and

Connected The device has successfully joined

The device is connected to the
network, but is in a “quarantined”
state.

operational, but is running with
limited bandwidth for sending
periodic data.

the network.

Reference Manual 89

Configuration Reference Manual

March 2022 00809-0100-4308

Verify with AMS Wireless Configurator

Procedure

1. Start the AMS Wireless Configurator.

2. Navigate to the Smart Wireless Gateway icon.
When the device has joined the network, it will appear in the AMS Wireless

Configurator window.

Network connection status

Figure 4-6 presents the different network connection status images that are shown in the

AMS Wireless Configurator Overview screen.

Figure 4-6: Network Connection Status Images

Verify by Gateway

Procedure

1. From the Emerson Wireless Gateway home page, navigate to the Devices page.
This page shows whether the device has joined the network and if it is

communicating properly.

2. Locate the device in question and verify all status indicators are good (green).
It may take several minutes for the device to join the network and be seen on the

Gateway's integrated web interface.

90 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

Figure 4-7: Wireless Gateway Devices Page

Verify with handheld communicator

Prerequisites

Do not remove the power module. Removing the power module may cause the device to
drop off the network.

Note

In order to communicate with a handheld communicator, the device must be powered by
the power module.

Procedure

1. Connect the handheld communicator.

2. Select Service Tools → Communications.

3. Select Join Status.

4.7 Configure device using guided setup

4.7.1 Connect to device

Procedure

1. Connect to the device using your preferred configuration tool, as shown in Figure

4-8 and Figure 4-9.

2. Do one of the following:

• AMS Wireless Configurator:

a. Start AMS Wireless Configurator.

Reference Manual 91

$

&

%

1 2 3

4 5 6

7 809

$

Configuration Reference Manual

March 2022 00809-0100-4308

b. Select View → Device Connection View.

c. Double click the device under the HART modem.

• Handheld communicator:

— Turn on the handheld communicator and connect to the device.

Figure 4-8: Connect to Device

4.7.2

A. Communication terminals
B. Handheld communicator
C. HART modem

Figure 4-9: Connect to Device - Wirelessly

A. Wireless Gateway

Configure using basic setup

Procedure

1. Select Configure.

2. Select Guided Setup → Initial Setup.

92 Rosemount 3308 Series

Reference Manual Configuration

00809-0100-4308 March 2022

3. Select Basic Setup, and follow the instructions.

Figure 4-10: Guided Setup Screen

Related information

Configuration parameters

4.7.3

Reference Manual 93

Consider optional setup

Consider Optional Setup such as Volume, Device Display, Echo Tuning, and Check Level
Response, found in the Guided Setup. Run Check Level Response to review the maximum
level change between updates with the current configuration.

Procedure

1. Select Configure.

2. Select Guided Setup → Optional Setup.

3. Select the desired Optional Setup, and follow the instructions.

Additional configuration parameters are available in the Manual Setup menu.

Related information

Configuration parameters

Configuration Reference Manual

March 2022 00809-0100-4308

4.8 Run verify level

The Verify Level tool matches the product level reported by the device to a reference
measurement (for example hand-dipping with a measurement tape).

If any difference, the Calibration Offset parameter will be adjusted. A minor adjustment
using Calibration Offset is normal. There may, for example be a deviation between the
actual tank height and the configured value.

Prerequisites

Ensure that:

• The product surface is calm.

• The tank is not being filled or emptied.

• The actual level is well above the probe end.

Procedure

1. Select Configure.

2. Select Guided Setup → Initial Setup.

3. Select Verify Level to check your level measurement.

4. Follow the on-screen instructions.

Related information

Calibration offset

94 Rosemount 3308 Series

Reference Manual Operation

00809-0100-4308 March 2022

5 Operation

5.1 Safety messages

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

WARNING

Explosions could result in death or serious injury.

• Verify that the operating atmosphere of the transmitter 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 could cause 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.

Process leaks could result in death or serious injury.

• Only qualified personnel should install the equipment.

• Handle the transmitter carefully.

• If the process seal is damaged, gas could escape from the tank when removing the

transmitter head from the probe.

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.

Reference Manual 95

Operation Reference Manual

March 2022 00809-0100-4308

CAUTION

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 Part 15 of the FCC Rules. Operation is subject to the following
conditions:

• 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 8 in.

(20 cm) from all persons.

5.2 Device display screen messages

The device display can be used to present different variables and a diagnostic screen
sequence.

5.2.1

Variable screens

If the Display Mode is set to Periodic, the device display shows a periodic sequence of user­chosen variables during operation. A new screen appears according to configured wireless
update rate. The device display will also show ALERT PRESNT if at least one alert is present.

The transmitter can display the following variables:

Figure 5-1: LCD Display Variables

Percent of Range

Total Volume Interface Distance Interface Level

Level Distance

96 Rosemount 3308 Series

Reference Manual Operation

00809-0100-4308 March 2022

Upper Product Thickness Electronics Temperature Supply Voltage

5.2.2

Signal Quality

Related information

Device display

View diagnostic screens

The diagnostic button screen sequence on the device display can be used to obtain
detailed diagnostic information.

Procedure

1. Unscrew the device display cover.

Reference Manual 97

Operation Reference Manual

March 2022 00809-0100-4308

2. Press and hold the DIAG button until the first diagnostic button screen appears on
the device display. Release the DIAG button.

The device display will now automatically show the diagnostic screens.

Diagnostic button screen sequence

Table 5-1: Diagnostic Button Screen Sequence

Screen Sequence Description

1. Device Information: Tag User entered tag which is 8 characters long. This screen will not

display if all characters are blank.

2. Device Serial Number Used to determine Device Serial Number.

3. Software Revision Used to determine Device Software Revision.

4. Network ID Used to determine the entered Network ID in the device.

98 Rosemount 3308 Series

Reference Manual

00809-0100-4308 March 2022

Table 5-1: Diagnostic Button Screen Sequence (continued)

Screen Sequence Description

5. Network Connection Status The screen displayed is dependent on the progress of the

device in joining the wireless network.

Operation

6. Active Alert Screens (if

present)

7.Variable Screens At the end of the sequence, the device display shows all

8. Active Alert Present This screen will only appear if there is at least one Active Alert

See Device display alerts for a full list of Active Alerts that may
appear on this position of the sequence.

selected variable screens.

present. For detailed information of the failure source and
recommended actions, go to the Active Alerts screen in AMS
Wireless Configurator or handheld communicator. Refer to

Check device status.

5.3 View measurement data

Measurement values can be viewed using AMS Wireless Configurator and handheld
communicator.

5.3.1

Reference Manual 99

View current measurement values

Current measurement data of the Primary Variable (PV) and Secondary Variable (SV) are
presented on the Overview screen. You can also view all current measurement values in
AMS Wireless Configurator and on the handheld communicator.

Procedure

1. Select Service Tools → Variables.

2. Select the desired group of measurement values to view.

• To view gauges for the Primary Variable (PV), Secondary Variable (SV), Third

Variable (TV) and Fourth variable (QV), select Mapped Variables.

Operation

March 2022 00809-0100-4308

• To view process values such as Level, Distance, Percent of Range, select Process.

• To view device values such as Electronics Temperature, Supply Voltage, select

Device.

• To view Signal Quality, select Signal Quality.

Reference Manual

5.3.2 View trends

Measurement values can be logged and displayed in a graph or a table.

Procedure

1. Select Service Tools Trends.

2. Select to log measurement values either in a graph or a table.

• To log Level and Interface Level values in a graph, select Level.

• To log Distance values in a graph, select Distance.

• To log Total Volume in a graph, select Volume.

5.3.3

• To log Signal Quality in a graph, select Signal Quality.

• To log the trend of 12 data points shown in a table, select Data History, and

then select View Data History.

Note

Values are logged in the trend graphs only as long as the Trends item is selected.

Related information

Configure data history

Interpret measurement status

A “Good” or “Bad” status next to a value is an indication of the reliability or integrity of the
data being received, not an indication of whether or not the value is within the configured
upper or lower ranges. A value that triggers an alert, such as a high or low temperature
indication, will change the overall status of the device, but the measurement might still be
indicated as “Good” if the reliability of the data is good.

Figure 5-2: Measurement Status Bars

5.4 Check device status

The overall device status is presented under the Overview screen. The device reports
diagnostic alerts when there is a device malfunction.

Procedure

1. Go to the Overview screen to view the overall device status.

100 Rosemount 3308 Series