Endress+Hauser USR30 Manual

TI01709O/00/DE/01.23-00 Products Solutions Services
71609654
2023-05-09
Technical Information
Radar sensor USR30
Free space radar
Sensor unit for distance measurement and level monitoring of liquids and
bulk solids

Application
•Continuous distance measurement and level monitoring
of liquids and bulk solids
•Maximum measuring range: 35 m (115 ft))
•Ambient temperature: –40 to +85 C (–40 to +176 F)
Your benefits
•Reliable 80 GHz radar sensor
•Precise distance measurement due to strong focus, even in
rough environments
•Can be installed in small process connections
•Easy commissioning
•Low power consumption - suitable for battery applications

Radarsensor USR30
Table of contents
About this document ..............................................
3
Document function ....................................................................
3
Symbols used .............................................................................
3
Function and system design ...................................
4
Measuring principle ..................................................................
4
Input.........................................................................
4
Measured variable .....................................................................
4
Measuring range .......................................................................
4
Operating frequency ..................................................................
5
Blocking distance .......................................................................
5
Sensitivity ...................................................................................
5
Output......................................................................
6
Output signal .............................................................................
6
Protocol-specific data ................................................................
6
Power supply...........................................................
6
Supply voltage ...........................................................................
6
Power consumption ...................................................................
6
Connection of the sensor ..........................................................
6
Performance characteristics ..................................
7
Reference operating conditions ................................................
7
Maximum measured error ........................................................
7
Influence of ambient temperature ............................................
7
Installation...............................................................
7
Beam angle.................................................................................
8
Environment............................................................
8
Ambient temperature ...............................................................
8
Storage temperature .................................................................
8
Relative humidity .......................................................................
8
Operating altitude according to DIN EN 61010-1 Ed. 3 .........
8
Degree of protection ..................................................................
8
Safety notes ...............................................................................
8
Prozess......................................................................
9
Mechanical construction ........................................
9
Dimensions .................................................................................
9
Weight .......................................................................................
9
Materials.....................................................................................
9
Integration into an overall system.........................
10
Integration ................................................................................
10
Certificates and approvals .....................................
10
CE mark .....................................................................................
10
RoHS ..........................................................................................
10
EN 302729-1/2 radio standard ..............................................
10
FCC .............................................................................................
11

Industry Canada ......................................................................... 11
Other standards and guidelines ............................................... 12
Explanations and supplementary documentation . .. 12
Supplementary documentation ................................................ 12
Disposal ...................................................................................... 12
Contact addresses ..................................................................... 12
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Radarsensor USR30
About this document
Document function This document contains all the technical data for the device and provides an overview of the
device versions that can be ordered.
Symbols used Safety symbols
Symbol
Meaning
NOTICE!
This symbol contains information on procedures and other facts which do not result
in personal injury.
NOTICE
Symbols for certain types of information
Symbol
Meaning
Tip
Indicates additional information.
Permitted or recommended
Forbidden or not recommended
1. 2.
3. ...
Series of steps
Reference to page
Symbols in graphics
Symbol
Meaning
1, 2, 3, ...
Item numbers
A, B, C, ...
Views

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Radarsensor USR30
Function and system design
Measuring principle The Micropilot is a measuring system, operating based on the time-of-flight method (ToF). It measures
the distance from the reference point to the product surface. The radar signals based on the
"Frequency Modulated Continious Wave" (FMCW) principle are emitted by an antenna, reflected off
the product surface and received again by the radar system.
Input
Measured variable Measured process variables
•Level / Distance: 0 to 35 m (0 to 115 ft)
Measuring range Maximum measuring range: 0 to 30 m (0 to 98 ft) for solids and liquids with permittivity > 1.9
Increased measuring range: 30 to 35 m (98 to 115 ft) for solids and liquids with the
following application conditions:
•Only for media with a high permittivity value, such as water.
•No turbulent surfaces
•No increased inhomogeneous atmosphere (increased amount of dust particles, gas phases,
high humidity or similar)
Radarsensor_Abgleichparameter
Calibration parameter
B Ground
D Measured distance
E Empty calibration (= zero)
F Full calibration (= span)
L Level in %
BD Blocking distance
FD Full distance
ED Empty distance
EL Extended length

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Radarsensor USR30
Medium
Media: solids and liquids
Usable measuring range for solid applications
The usable measuring range depends on the reflection properties of the medium, the
installation position and possible interference reflections.
Measurement of the following media with absorbing gas phase
For example the following media
•Ammonia (pure - 100 %)
•Acetone
•Methylene chloride
•Methyl ethyl ketone
•Propylene oxide
•VCM (vinyl chloride monomer)
To measure absorbing gases, either use a guided radar, measuring devices with
another measuring frequency or another measuring principle.
If measurements must be performed in one of these media, please contact Endress+Hauser.
Operating frequency 80 GHz
The operating frequency is for measurement purposes only.
Blocking distance
A0041499
•No signals are analyzed within the blocking distance (BD)
For this reason, the blocking distance can be used to suppress interference signals (e.g. from
condensate) near the antenna.
•Factory setting: automatic
•The blocking distance (BD) can be set. The set default value is 0 mm.
The setting is made in the blocking distance parameter.
Sensitivity The sensitivity of the sensor can be configured using a "sensitivity parameter" (high, medium, low).

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Radarsensor USR30
Output
Output signal Digital: UART (8N1 inverted)
Baud rate: 230.4 kBd
data bits: 8
Parity: keine
Stop bits: 1
Polarity: inverted (idle low)
Protocol-specific data The USR30 has the following read and write parameters:
Parameter
Unit
Read
Write
Measured distance
mm
X
Measured level
%
X
Configurable blocking distance
mm
X
X
Definition for state "Empty"
mm
X
X
Definition for level "Full"
mm
X
X
Medium type liquid / bulk solids
X
X
Trigger measurement on / off
X
X
Reception strength of radar signal
strong, medium, weak,
no signal
X
Sensitivity of sensor
low, medium, high
X
X
Hardware version
X
Software version
X
Serial number
X
Error status
X
Z-Offset
mm
X
X
Power supply
Supply voltage The radar system requires 2 supply voltages:
Sensor: 3.2 to 5.5 VDC
Digital interface: 1.7 to 3.6 VDC
Power consumption ~32 mW static
~1000 mW peak for < 10 ms during measurement
Connection of the sensor The connection of the sensor is described in the documentation "USR30 Customer Manual"
(see Supplementary documentation ä 12)

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Radarsensor USR30
Performance characteristics
Reference operating condi-
tions
•Temperaturr = +24 C (+75 F) ±5 C (±9 F)
•Pressure = 960 mbar abs. (14 psi) ±100 mbar (±1.45 psi)
•Humidity = 60 % ± 5 %
•Reflector: metal plate with a diameter ≥ 1 m (40 in)
•No major interference reflections inside the signal beam
Maximum measured error • Accuracy for liquids applications: ±2 mm (±0.08 in) within
the entire measuring range
•Accuracy for bulk solids applications: ±10 mm (±0.39 in) within the entire measuring
range (higher measuring accuracy optionally possible)
The reference condition for the accuracy refers to the setting Medium type = Liquid.
Influence of ambient tempe- Temperature coefficient: ≤ 4 mm (0.16 in) per 10 K
rature
Installation
Mounting instructions
•Mount the end measuring device in a horizontal position so that it is parallel to the tank ceiling.
Otherwise, undesired reflections from the surroundings can cause interference signals.
•The radar antenna should never be covered by metal objects
•Do not mount any objects which may cause interference, such as tank internal fittings, grids or
agitators, below or in the direct vicinity of the radar (see the graphic below)
A0045540

Radarsensor USR30
Maximum nozzle height and distance to wall
A0046856
Diameter D [mm]
Hmax [mm]
Measuring distance [mm]
Radiation width 1) [mm]
40
230
500
70
50
300
1000
140
80
520
2000
280
100
660
5000
699
150
1020
10000
1399
1) The beam angle is 8°
Beam angle 8°
Environment
Ambient temperature –40 to +85 C (–40 to 185 F)
Storage temperature –40 to +85 C (–40 to +185 F)
Relative humidity 0 to 95 %
Operating altitude according Up to 2000 m (6600 ft) above sea level
to DIN EN 61010-1 Ed. 3
Degree of protection Open system: IP00
Safety notes For work on and with the device:
NOTICE
Danger of damaging the device
Static sensitive devices.
‣Handle only at static safe work stations!

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Radarsensor USR30
Process
•Measurement directly through the tank only possible for electrically non-conductive tank walls with
low dielectric constant and small wall thickness
No contact is made with the process medium.
Mechanical construction
Dimensions Sensor unit
* Unit of measurement mm
NOTICE
The recommended geometry of the antenna aperture to limit the radiation angle to 8° is
described in the installation instructions.
Weight Sensor unit with antenna 68 g
Materials • Radar antenna: Plastic PBT
•Coupling adapter: PPS GF40 (metallized)

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Integration into an overall system
It is not allowed to modify the sensor module in any way or form. The sensor must be used with
the antenna provided.
Characteristics
•Simple mechanical/electrical integration into an end device
•Configuration and control via widely used digital interface (UART) with defined command set (see
Customer Manual)
•Startup time: <250 ms until first measurement can be performed
•Measurement cycle time: <100 ms
Integration
•The sensor must be installed inside a closed housing.
•A minimum distance of >2mm to any mechanical part has to be left around and above the PCB as
to not interfere with any signals of the sensor.
•The signal cone must not be obstructed by any elements of the housing or add ons.
•The electrical connection must be done through the provided connector (see Customer Manual for
pin description). A fitting counterpart connector with a locking mechanism must be used.
•After mounting in a housing, a functional check and zero offset calibration has to be performed.
The zero plane can be defined by the customer.
Check list

•Is the sensor undamaged (visual inspection)?
•Is the sensor properly mounted and fixed in position?
•Is the antenna and housing properly sealed?
•Is the sensor signal cone unobstructed?
•Is the electrical connector properly fitted and locked?
•Is the sensor responsive and returns a correct measurement value without any communication
errors or active error bits?

Radarsensor USR30
Certificates and approvals
NOTICE
The USR30 radar sensor is a sensor unit that is installed as a component in the customer's end
system. It is therefore the customer's responsibility to obtain the relevant approvals for his end
device / measuring system.
Endress+Hauser's closed measuring systems that include this sensor unit comply with
the following guidelines:
CE mark The closed-loop measuring systems from Endress+Hauser with this sensor unit meet the legal
requirements of the applicable EU directives. These are listed in the corresponding EU Declaration
of Conformity together with the standards applied.
RoHS The Directive on the Restriction of the Use of Certain Hazardous Substances 2011/65/EU (RoHS 2) and
the Delegated Directive (EU) 2015/863 (RoHS 3).
LPR (Level Probing Radar) radio standard EN 302729 for unrestricted use inside and outside of
closed vessels in countries of the EU and EFTA.
As a prerequisite, the countries in question must have already implemented this standard.
The following countries are those that have currently implemented the standard:
Belgium, Bulgaria, Germany, Denmark, Estonia, France, Greece, UK, Ireland, Iceland, Italy,
Liechtenstein, Lithuania, Latvia, Malta, The Netherlands, Norway, Austria, Poland, Portugal,
Romania, Sweden, Switzerland, Slovakia, Spain, Czech Republic and Cyprus.
Implementation is still underway in all of the countries not listed.
Please note the following for operation of the devices outside of closed vessels:
The device must be mounted in accordance with the instructions in the "Installation" section.
Installation must be carried out by properly trained, expert staff.
The device antenna must be installed in a fixed location pointing vertically downwards.
The installation site must be located at a distance of 4 km from the astronomy stations listed
below or otherwise approval must be provided by the relevant authority. If the device is
installed at a distance of 4 to 40 km from one of the listed stations, it must not be installed at a
height of more than 15 m (49 ft) above the ground.
Astronomy stations
Country
Name of the station
Latitude
Longitude
Germany
Effelsberg
50°31'32" North
06°53'00" East
Finland
Metsähovi
60°13'04" North
24°23'37" East
Tuorla
60°24'56" North
24°26'31" East
France
Plateau de Bure
44°38'01" North
05°54'26" East
Floirac
44°50'10" North
00°31'37" West
EN 302729-1/2 radio
standard
1.
2.
3.
4.
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Radarsensor USR30
Country
Name of the station
Latitude
Longitude
Great Britain
Cambridge
52°09'59" North
00°02'20" East
Damhall
53°09'22" North
02°32'03" West
Jodrell Bank
53°14'10" North
02°18'26" West
Knockin
52°47'24" North
02°59'45" West
Pickmere
53°17'18" North
02°26'38" West
Italy
Medicina
44°31'14" North
11°38'49" East
Noto
36°52'34" North
14°59'21" East
Sardinia
39°29'50" North
09°14'40" East
Poland
Krakow Fort Skala
50°03'18" North
19°49'36" East
Russia
Dmitrov
56°26'00" North
37°27'00" East
Kalyazin
57°13'22" North
37°54'01" East
Pushchino
54°49'00" North
37°40'00" East
Zelenchukskaya
43°49'53" North
41°35'32" East
Sweden
Onsala
57°23'45" North
11°55'35" East
Switzerland
Bleien
47°20'26" North
08°06'44" East
Spain
Yebes
40°31'27" North
03°05'22" West
Robledo
40°25'38" North
04°14'57" West
Hungary
Penc
47°47'22" North
19°16'53" East
As a general rule, the requirements outlined in EN 302729-1/2 must be observed.
FCC § 15.19 Labeling requirements:
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 that may cause
undesired operation.
§ 15.21 Information to user:
Caution! Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Industry Canada This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science
and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following
two conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired
operation of the device.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR
d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio
exempts de licence. L’exploitation est autorisée aux deux conditions suivantes:
1. L’appareil ne doit pas produire de brouillage;
2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d’en compromettre le fonctionnement.