KROHNE OPTIWAVE 3500 C User manual

80 GHz Radar (FMCW) Level Transmitter for liquids with
hygienic requirements
OPTIWAVE 3500 C Handbook
© KROHNE 02/2023 - 4005813604 - MA OPTIWAVE 3500 R04 en

All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
Subject to change without notice.
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Copyright 2023 by
KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany)
: IMPRINT :::::::::::::::::::::::::::::::::::::::

CONTENTS
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1 Safety instructions 6
1.1 Software history ............................................................................................................... 6
1.2 Intended use ..................................................................................................................... 7
1.3 Certification ...................................................................................................................... 8
1.4 Radio approvals ................................................................................................................ 9
1.4.1 European Union (EU)............................................................................................................... 9
1.4.2 U.S.A...................................................................................................................................... 11
1.4.3 Canada................................................................................................................................... 13
1.5 Safety instructions from the manufacturer ................................................................... 14
1.5.1 Copyright and data protection .............................................................................................. 14
1.5.2 Disclaimer ............................................................................................................................. 15
1.5.3 Product liability and warranty .............................................................................................. 15
1.5.4 Information concerning the documentation......................................................................... 15
1.5.5 Warnings and symbols used................................................................................................. 16
1.6 Safety instructions for the operator............................................................................... 16
2 Device description 17
2.1 Scope of delivery............................................................................................................. 17
2.2 Device description .......................................................................................................... 18
2.3 Visual Check ................................................................................................................... 19
2.4 Nameplates .................................................................................................................... 20
2.4.1 Nameplate (examples).......................................................................................................... 20
3 Installation 21
3.1 General notes on installation......................................................................................... 21
3.2 Storage ........................................................................................................................... 21
3.3 Transport ........................................................................................................................ 22
3.4 Pre-installation requirements ....................................................................................... 22
3.5 Pressure and temperature ranges ................................................................................ 23
3.6 Recommended mounting position ................................................................................. 24
3.6.1 General notes........................................................................................................................ 24
3.6.2 Tanks with dish-shaped and conical bottoms...................................................................... 26
3.7 Mounting restrictions ..................................................................................................... 27
3.7.1 General notes........................................................................................................................ 27
3.7.2 Process connections............................................................................................................. 30
3.8 How to turn or remove the display module (option) ...................................................... 35
3.9 Weather protection......................................................................................................... 36
3.9.1 How to attach the weather protection to the device............................................................. 36
3.9.2 How to open the weather protection .................................................................................... 38
4 Electrical connections 39
4.1 Safety instructions.......................................................................................................... 39
4.2 General notes ................................................................................................................. 39
4.3 Electrical installation: output options with cable gland ................................................ 40
4.4 Electrical installation: output options with an M12 male connector............................. 44
4.5 Electrical connection for current output ....................................................................... 44

CONTENTS
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4.5.1 Non-Ex devices ..................................................................................................................... 44
4.5.2 Devices for hazardous locations........................................................................................... 45
4.6 Ingress protection .......................................................................................................... 45
4.7 Networks ........................................................................................................................ 46
4.7.1 General information.............................................................................................................. 46
4.7.2 Point-to-point connection..................................................................................................... 46
4.7.3 Multidrop networks............................................................................................................... 47
5 Start-up 48
5.1 Start-up checklist........................................................................................................... 48
5.2 How to start the device................................................................................................... 48
5.3 Operating concept .......................................................................................................... 48
5.4 Digital display screen ..................................................................................................... 49
5.4.1 Display screen layout............................................................................................................ 49
5.4.2 Keypad buttons ..................................................................................................................... 50
5.5 Remote communication with PACTware™ .................................................................... 52
5.6 Remote communication with the AMS™ Device Manager............................................. 53
6 Operation 54
6.1 User modes .................................................................................................................... 54
6.2 Normal mode.................................................................................................................. 54
6.3 Program mode................................................................................................................ 57
6.3.1 General notes........................................................................................................................ 57
6.3.2 Protection of the device settings (access levels) ................................................................. 58
6.3.3 How to get access to the Quick Setup menu ........................................................................ 60
6.3.4 Keypad functions................................................................................................................... 61
6.3.5 How to save settings changed in Program mode................................................................. 64
6.3.6 Menu overview ...................................................................................................................... 65
6.3.7 Function description ............................................................................................................. 70
6.4 Further information on device configuration in Program mode ................................... 90
6.4.1 Standard setup...................................................................................................................... 90
6.4.2 Empty spectrum recording................................................................................................... 93
6.4.3 HART® network configuration ............................................................................................. 96
6.4.4 Distance measurement ........................................................................................................ 97
6.4.5 Level measurement.............................................................................................................. 99
6.4.6 How to configure the device to measure volume or mass................................................. 101
6.4.7 How to measure correctly in tanks with curved or conical bottoms ................................. 103
6.4.8 How to make a filter to remove radar signal interference ................................................ 104
6.5 Status messages and diagnostic data.......................................................................... 105
7 Service 112
7.1 Periodic maintenance................................................................................................... 112
7.1.1 General notes...................................................................................................................... 112
7.1.2 Maintenance of the O-rings for the housing covers........................................................... 112
7.1.3 How to clean the top surface of the device......................................................................... 113
7.2 Service warranty........................................................................................................... 114
7.3 Spare parts availability................................................................................................. 115
7.4 Availability of services .................................................................................................. 115

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7.5 Returning the device to the manufacturer................................................................... 116
7.5.1 General information............................................................................................................ 116
7.5.2 Form (for copying) to accompany a returned device.......................................................... 117
7.6 Disposal ........................................................................................................................ 117
7.7 Disassembly and recycling........................................................................................... 118
7.7.1 General notes...................................................................................................................... 118
7.7.2 Compact version (C)............................................................................................................ 118
8 Technical data 123
8.1 Measuring principle...................................................................................................... 123
8.2 Technical data............................................................................................................... 125
8.3 Measuring accuracy ..................................................................................................... 131
8.4 Minimum power supply voltage ................................................................................... 133
8.5 Dimensions and weights .............................................................................................. 134
9 Description of HART interface 140
9.1 General description ...................................................................................................... 140
9.2 Software history ........................................................................................................... 141
9.3 Connection variants...................................................................................................... 141
9.3.1 Point-to-Point connection – analogue / digital mode ........................................................ 141
9.3.2 Multi-Drop connection (2-wire connection) ....................................................................... 142
9.4 HART® device variables............................................................................................... 142
9.5 Field Communicator 475 (FC 475)................................................................................ 143
9.5.1 Installation .......................................................................................................................... 143
9.5.2 Operation............................................................................................................................. 143
9.6 Asset Management Solutions (AMS)............................................................................ 143
9.6.1 Installation .......................................................................................................................... 143
9.6.2 Operation............................................................................................................................. 144
9.6.3 Parameter for the basic configuration ............................................................................... 144
9.7 Field Device Tool / Device Type Manager (FDT / DTM)................................................ 144
9.7.1 Installation .......................................................................................................................... 144
9.7.2 Operation............................................................................................................................. 144
9.8 Process Device Manager (PDM)................................................................................... 144
9.8.1 Installation .......................................................................................................................... 144
9.8.2 Operation............................................................................................................................. 145
9.9 HART® menu tree for AMS.......................................................................................... 145
9.9.1 Overview AMS menu tree (positions in menu tree)............................................................ 145
9.9.2 AMS menu tree (details for settings).................................................................................. 146
9.10 HART® menu tree for PDM........................................................................................ 149
9.10.1 Overview PDM menu tree (positions in menu tree).......................................................... 149
9.10.2 PDM menu tree (details for settings) ............................................................................... 150
10 Appendix 153
10.1 Accessories................................................................................................................. 153
10.2 Glossary ...................................................................................................................... 154
11 Notes 157

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1.1 Software history
"Firmware revision" agrees with NAMUR NE 53. It is a series of numbers used to record the
revision status of embedded software (firmware) in electronic equipment assemblies. It gives
data on the type of changes made and the effect that changes have on compatibility.
Data about software revisions is shown in menu C5.1.2 Identification. For more data, refer to
Function description on page 70. If it is not possible to refer to the device menu, record the serial
number of the device (given on the device nameplate) and speak to the supplier.
Changes and effect on compatibility
1 Downwards compatible changes and fault repair with no effect on operation (e.g. spelling
mistakes on display)
2-_ Downwards compatible hardware and/or software change of interfaces:
H HART®
P Profibus
F FOUNDATION fieldbus
3-_ Downwards compatible hardware and/or software change of inputs and outputs:
CO Current output
FO,
PO Frequency output / pulse output
SO Status output
LS Limit switch
CI Current input
D Display
Table 1-1: Changes and effect on compatibility
Release
date
Printed circuit
assembly
Firmware
revision
Electronic
revision
Hardware
revision
Changes and
compatibility
Documentation
2017-05-15 HMI
(LCD display option) BL1.21.05 ER1.0.7 4002905801a 1 — HB OPTIWAVE 3500 R01
Main and Support 4002815701d, e, f
Sensor 4004742601b
2018-02-27 HMI
(LCD display option) BL1.24.07 ER1.0.8 4002905801b 1 Languages options added —
Main and Support 4002815701d, e, f
Sensor 4004742601b
2019-08-30 HMI
(LCD display option) BL1.31.06 ER2.0.0_ 4002905801b 1 Flow calculation
added
HB OPTIWAVE
3500 R02
Main and Support 4002815701g
Sensor 4004742601b
2020-11-16 HMI
(LCD display option) BL1.35.06 ER2.1.1 4002905801b 1 Functions for SIL operation HB OPTIWAVE 3500 R03
Main and Support 4002815705f
Sensor 4004742602_

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1.2 Intended use
This radar level transmitter measures distance, level, mass, volume and reflectivity of liquids,
pastes and slurries.
It can be installed on tanks for hygienic applications.
2022-11-23 HMI
(LCD display option) 1.36.09 ER2.2.0 4002905801c 1 Changes to the microcontroller HB OPTIWAVE 3500 R04
Main and Support 4002815711_
Sensor 4004742604_
Table 1-2: Software history
1If the device does not have the display module option, the module reference number is 4002905802a
CAUTION!
Responsibility for the use of the measuring devices with regard to suitability, intended use and
corrosion resistance of the used materials against the measured fluid lies solely with the
operator.
INFORMATION!
The manufacturer is not liable for any damage resulting from improper use or use for other than
the intended purpose.
Release
date
Printed circuit
assembly
Firmware
revision
Electronic
revision
Hardware
revision
Changes and
compatibility
Documentation

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1.3 Certification
This device fulfils the statutory requirements of the relevant directives.
For more information on the directives, standards and the approved certifications, please refer
to the declaration of conformity supplied with the device or downloadable from the
manufacturer’s website.
Other approvals and standards
•EU: Radio Equipment Directive, Electromagnetic Compatibility Directive, the safety part of the
Low Voltage Directive and ATEX Directive (Ex-approved devices)
•UK: Radio Equipment Regulations, Electromagnetic Compatibility Regulations, the safety part
of the Electrical Equipment (Safety) Regulations and Protective Systems Intended for use in
Potentially Explosive Atmospheres Regulations
•NAMUR Recommendations NE 21, NE 43, NE 53 and NE 107
Product marking
Figure 1-1: Examples of marking logo
The manufacturer certifies successful testing of the product by applying the conformity mark on
the device.
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.

SAFETY INSTRUCTIONS 1
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1.4 Radio approvals
1.4.1 European Union (EU)
This level transmitter is approved to be used outside metallic tanks. If you use the device in the
open air, read the device nameplate to make sure that the device can be used for your
application. Refer also to the table that follows:
TLPR (Tank Level Probing Radar) devices only
Use approved personnel to install the device. The device and the tank agree with the RED (Radio
Equipment Directive) if you obey the instructions that follow:
INFORMATION!
LPR (Level Probing Radar) devices measure level in the open air or in a closed space (a metallic
tank etc.). TLPR (Tank Level Probing Radar) devices measure level in a closed space only. You
can use LPR devices for TLPR applications. The LPR and TLPR devices meet the requirements of
the RED (Radio Equipment Directive) for use in the member countries of the EU.
The type of antenna is specified in the order code. The order code is given in the customer order
and on the namplate. For more data, refer to Nameplates on page 20
.
Antenna type Order code Permitted for:
PEEK / DN25 (1¨) Lens VFDAxxxxxxxxxxxxx2xx... TLPR
PEEK / DN40 (1½¨) Lens VFDAxxxxxxxxxxxxx3xx... LPR + TLPR
Table 1-3: Antenna types approved for open-air applications
Figure 1-2: European Union: radio approval information on the nameplate
1 Type code (defined in order)
2 HVIN (Hardware Version Identification Number). This number gives the radar signal frequency (80GHZ = 80 GHz), the
location of the device (T=TLPR or L=LPR) and the type of signal converter (compact (C))
TLPR device: HVIN: 80GHZ-T-C
LPR device: HVIN: 80GHZ-L-C
3 CE sign
S/N: xxxxxxxxxxxxxxxxxxx
Manufacturing date: YYYY-MM-DD
Tag No:

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•TLPR (Tank Level Probing Radar) are required to be installed at a permanent fixed position at
a closed (not open) metallic tank or reinforced concrete tank, or similar enclosure structure
made of comparable attenuating material;
•flanges and attachments of the TLPR equipment shall provide the necessary microwave
sealing by design;
•sight glasses shall be coated with a microwave-proof coating when necessary (i.e. electrically
conductive coating);
•manholes or connection flanges at the tank shall be closed to ensure a low-level leakage of
the signal into the air outside the tank;
•whenever possible, mounting of the TLPR equipment shall be on top of the tank structure
with the orientation of the antenna to point in a downward direction;
•installation and maintenance of the TLPR equipment shall be performed by professionally
trained individuals only.
For data about how to install EMI/RFI shielding gaskets, refer to the instructions supplied with
this accessory.
LPR (Level Probing Radar) devices only
Use approved personnel to install the device. If the device is operated in the open air (outdoors),
it agrees with the RED (Radio Equipment Directive) if you obey these instructions:
• The antenna must always point downwards. The boresight direction of the antenna must be
vertical. No other angles are permitted.
• Install the device more than 4 km / 2.485 mi away from radio astronomy sites.
• If the device is 4...40 km / 2.485...24.855 mi away from radio astronomy sites, do not install the
device more than 15 m/ 49.21 ft above the ground.
Radio quiet zones: locations of radio astronomy sites (stations) in Europe and northern Eurasia
CAUTION!
If it is necessary to install the device less than 4 km / 2.485 mi from radio astronomy sites, you
must get the approval of the national regulatory authority before installation (e.g. ANFR
(France), Bundesnetzagentur (Germany), Ofcom (United Kingdom) etc.).
Country Name of the station Location
Latitude, φLongitude, λ
Finland Metsähovi 60°13'04" N 24°23'37" E
France Plateau de Bure 44°38'01" N 05°54'26" E
Germany Effelsberg 50°31'32" N 06°53'00" E
Italy Sardinia 39°29'50" N 09°14'40" E
Spain Yebes 40°31'27" N 03°05'22" W
Pico Veleta 37°03'58" N 03°23'34" W
Sweden Onsala 57°23’45" N 11°55’35" E
Table 1-4: Radio quiet zones: locations of radio astronomy sites (stations) in Europe and northern Eurasia

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1.4.2 U.S.A.
This level transmitter is approved to be used outside metallic tanks. If you use the device in the
open air, read the device nameplate to make sure that the device can be used for your
application. Refer also to the table that follows:
The Product Marketing Name (PMN) of this device is "OPTIWAVE x500 series, OPTIWAVE x500
FF_PA series".
INFORMATION!
LPR (Level Probing Radar) devices measurement level in the open air or in a closed space (a
metallic tank etc.). TLPR (Tank Level Probing Radar) devices measure of level in a closed space
only.
Antenna type Order code Permitted for:
PEEK / DN25 (1¨) Lens VFDAxxxxxxxxxxxxx2xx... TLPR
PEEK / DN40 (1½¨) Lens VFDAxxxxxxxxxxxxx3xx... LPR + TLPR
Table 1-5: Antenna types approved for open-air applications
LEGAL NOTICE!
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference which may cause un-
desired operation.
Changes or modifications made to this equipment not expressly approved by the manufacturer
may void the FCC authorizations to operate this equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.

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Figure 1-3: U.S.A.: radio approval information on the nameplate
1 Type code (defined in order)
2 HVIN (Hardware Version Identification Number). This number gives the radar signal frequency (80GHZ = 80 GHz), the
location of the device (T=TLPR or L=LPR) and the type of signal converter (compact (C))
TLPR device: HVIN: 80GHZ-T-C
LPR device: HVIN: 80GHZ-L-C
3 FCC ID
TLPR device: FCC-ID: Q6BFMCW80G74TA
LPR device: FCC-ID: Q6BFMCW80G74LA
S/N: xxxxxxxxxxxxxxxxxxx
Manufacturing date: YYYY-MM-DD
Tag No:

SAFETY INSTRUCTIONS 1
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1.4.3 Canada
This level transmitter is approved to be used outside metallic tanks. If you use the device in the
open air, read the device nameplate to make sure that the device can be used for your
application. Refer also to the table that follows:
The Product Marketing Name (PMN) of this device is "OPTIWAVE x500 series, OPTIWAVE x500
FF_PA series".
INFORMATION!
LPR (Level Probing Radar) devices measure level in the open air or in a closed space (a metallic
tank etc.). TLPR (Tank Level Probing Radar) devices measure level in a closed space only.
Antenna type Order code Permitted for:
PEEK / DN25 (1¨) Lens VFDAxxxxxxxxxxxxx2xx... TLPR
PEEK / DN40 (1½¨) Lens VFDAxxxxxxxxxxxxx3xx... LPR + TLPR
Table 1-6: Antenna types approved for open-air applications
LEGAL NOTICE!
This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following conditions:
1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause unde-
sired operation.
This device and the handbook comply with the requirements of RSS-Gen. Operation is subject to
the conditions that follow:
1. The installation of the LPR/TLPR device shall be done by trained installers, in strict compliance
with the manufacturer’s instructions.
2. The use of this device is on a "no-interference, no-protection" basis. That is, the user shall ac-
cept operations of high-powered radar in the same frequency band which may interfere with or
damage this device. However, devices found to interfere with primary licensing operations will
be required to be removed at the user’s expense.
3. The TLPR device shall be installed and operated in a completely enclosed container to prevent
RF emissions, which can otherwise interfere with aeronautical navigation.
4. LPR devices: Ensure a vertically downward orientation of the transmit antenna and an instal-
lation only at fixed locations.
5. The installer / user of this device shall ensure that it is at least 10 km from the Dominion Radio
Astrophysical Observatory (DRAO) near Penticton, British Columbia. The coordinates of the
DRAO are latitude 49°19'15" N and longitude 119°37'12" W. For devices not meeting this 10 km
separation (e.g. those in the Okanagan Valley, British Columbia) the installer / user must coor-
dinate with, and obtain the written concurrence of, the Director of the DRAO before the equip-
ment can be installed or operated. The Director of the DRAO may be contacted at 250-497-2300
(tel.) or 250-497-2355 (fax). Alternatively, the Manager, Regulatory Standards, Industry Canada,
may be contacted.

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1.5 Safety instructions from the manufacturer
1.5.1 Copyright and data protection
The contents of this document have been created with great care. Nevertheless, we provide no
guarantee that the contents are correct, complete or up-to-date.
The contents and works in this document are subject to copyright. Contributions from third
parties are identified as such. Reproduction, processing, dissemination and any type of use
beyond what is permitted under copyright requires written authorisation from the respective
author and/or the manufacturer.
The manufacturer tries always to observe the copyrights of others, and to draw on works created
in-house or works in the public domain.
The collection of personal data (such as names, street addresses or e-mail addresses) in the
manufacturer's documents is always on a voluntary basis whenever possible. Whenever
feasible, it is always possible to make use of the offerings and services without providing any
personal data.
We draw your attention to the fact that data transmission over the Internet (e.g. when
communicating by e-mail) may involve gaps in security. It is not possible to protect such data
Figure 1-4: Canada: radio approval information on the nameplate
1 Type code (defined in order)
2 HVIN (Hardware Version Identification Number). This number gives the radar signal frequency (80GHZ = 80 GHz), the
location of the device (T=TLPR or L=LPR) and the type of signal converter (compact (C))
TLPR device: HVIN: 80GHZ-T-C
LPR device: HVIN: 80GHZ-L-C
3 IC number
TLPR device: 1991D-FMCW80GX5T
LPR device: 1991D-FMCW80GX5L
S/N: xxxxxxxxxxxxxxxxxxx
Manufacturing date: YYYY-MM-DD
Tag No:

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completely against access by third parties.
We hereby expressly prohibit the use of the contact data published as part of our duty to publish
an imprint for the purpose of sending us any advertising or informational materials that we have
not expressly requested.
1.5.2 Disclaimer
The manufacturer will not be liable for any damage of any kind by using its product, including,
but not limited to direct, indirect or incidental and consequential damages.
This disclaimer does not apply in case the manufacturer has acted on purpose or with gross
negligence. In the event any applicable law does not allow such limitations on implied warranties
or the exclusion of limitation of certain damages, you may, if such law applies to you, not be
subject to some or all of the above disclaimer, exclusions or limitations.
Any product purchased from the manufacturer is warranted in accordance with the relevant
product documentation and our Terms and Conditions of Sale.
The manufacturer reserves the right to alter the content of its documents, including this
disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable
in any way for possible consequences of such changes.
1.5.3 Product liability and warranty
The operator shall bear responsibility for the suitability of the device for the specific purpose.
The manufacturer accepts no liability for the consequences of misuse by the operator.
Improper installation or operation of the devices (systems) will cause the warranty to be void.
The respective "Standard Terms and Conditions" which form the basis for the sales contract
shall also apply.
1.5.4 Information concerning the documentation
To prevent any injury to the user or damage to the device it is essential that you read the
information in this document and observe applicable national standards, safety requirements
and accident prevention regulations.
If this document is not in your native language and if you have any problems understanding the
text, we advise you to contact your local office for assistance. The manufacturer cannot accept
responsibility for any damage or injury caused by misunderstanding of the information in this
document.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device. Special considerations and precautions are also described in the
document, which appear in the form of icons as shown below.

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1.5.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
• HANDLING
This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.
iRESULT
This symbol refers to all important consequences of the previous actions.
1.6 Safety instructions for the operator
DANGER!
This warning refers to the immediate danger when working with electricity.
DANGER!
This warning refers to the immediate danger of burns caused by heat or hot surfaces.
DANGER!
This warning refers to the immediate danger when using this device in a hazardous atmosphere.
DANGER!
These warnings must be observed without fail. Even partial disregard of this warning can lead to
serious health problems and even death. There is also the risk of seriously damaging the device
or parts of the operator's plant.
WARNING!
Disregarding this safety warning, even if only in part, poses the risk of serious health problems.
There is also the risk of damaging the device or parts of the operator's plant.
CAUTION!
Disregarding these instructions can result in damage to the device or to parts of the operator's
plant.
INFORMATION!
These instructions contain important information for the handling of the device.
LEGAL NOTICE!
This note contains information on statutory directives and standards.
WARNING!
In general, devices from the manufacturer may only be installed, commissioned, operated and
maintained by properly trained and authorized personnel.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device.

DEVICE DESCRIPTION 2
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2.1 Scope of delivery
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
Figure 2-1: Scope of delivery
1 Signal converter, process connection and antenna in the ordered version
2 Quick Start and supplementary instructions (if the device has the appropriate options)
3 Bar magnet
4 Display extractor (for removal of the optional display module)
5 Cover wrench (for removal of the device covers)

2 DEVICE DESCRIPTION
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OPTIWAVE 3500 C
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2.2 Device description
This device is an 80 GHz FMCW-radar level transmitter. It is a non-contact technology and is 2-
wire loop-powered. It is designed to measure the distance, level, mass, volume and reflectivity of
liquids, pastes and slurries. For more data about the measuring principle, refer to
Measuring
principle
on page 123.
Radar level transmitters use an antenna to emit a signal to the surface of the measured product.
The device has many antennas available. Thus, it can measure most products even in difficult
conditions. Also refer to
Technical data on page 123.
If the device is ordered with the applicable options, it can be certified for use in hazardous areas.
The signal converter is attached directly to the process connection and the antenna. The
illustration that follows shows the types of antenna.
Figure 2-2: Types of antenna
1 DN25 (1¨) Lens antenna made of PEEK.
2 DN40 (1½¨) Lens antenna made of PEEK.
INFORMATION!
For more data about accessories, refer to Accessories on page 153 .

DEVICE DESCRIPTION 2
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OPTIWAVE 3500 C
www.krohne.com02/2023 - 4005813604 - MA OPTIWAVE 3500 R04 en
2.3 Visual Check
WARNING!
If the display screen glass is broken, do not touch.
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
Figure 2-3: Visual check
1 Device nameplate (for more data refer to Nameplate (examples) on page 20)
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.

2 DEVICE DESCRIPTION
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OPTIWAVE 3500 C
www.krohne.com 02/2023 - 4005813604 - MA OPTIWAVE 3500 R04 en
2.4 Nameplates
2.4.1 Nameplate (examples)
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Figure 2-4: Non-Ex nameplate attached to the housing
1 Cable entry size
2 CE, UKCA or CMIM marking (if applicable)
3 Name and address of the UK importer (if applicable)
4 Signal output (analog, HART®, fieldbus etc.), input voltage and maximum current (fieldbus options: basic current)
5 Electronic revision (according to NAMUR NE 53)
6 Degree of ingress protection (according to EN 60529 / IEC 60529)
7 EU food contact symbol. The device agrees with the related EU sanitary regulations. For more data, refer to
Technical
data
on page 125.
8 Optional 3-A® approval. Devices with this symbol agree with 3-A® sanitary standards for design and fabrication.
9 Customer tag number
10 Date of manufacture
11 Serial number
12 Type code (defined in order)
13 Model name and number. C = compact version.
14 Company logo, name and postal address
Country of manufacture / Company web address
15 cQPSus electrical safety certification for the USA and Canada. Agrees with NEC and CEC requirements for installa-
tion in ordinary locations.
16 WARNING! Hot surface. If the device is connected to tank that operates at high temperature, there is a risk of injury.
17 Communication protocol option (HART® etc.)