RAD78D RAD78D RAD78D RAD78D RAD78D
RAD78D RAD78D RAD78D RAD78D RAD78D

RAD78D

  • Real-time measurement rate up to 500 Hz
  • Easy implementation
  • Industry 4.0 / IIoT ready
  • Accuracy bis ±0,1 mm
  • max. linearity bis ±1 mm / ±0,7 mm
Analog 4–20 mA
PROFINET IO

Radar sensor for distance measurement and positioning. Precise. Robust. Focused.

The RAD78D radar sensor with PROFINET interface and integrated web server can be used both as a stand-alone sensor and in system solutions. Thanks to the intuitive GUI (Graphical User Interface), the sensor is easy to implement in the application and the associated control concept.
An extremely small opening angle of just ±1.5° (3°) offers maximum focusing. With a measuring rate of 500 Hz, measurements can be taken not only precisely but also quickly with an accuracy of ±0.1 mm. This means that countless applications can be realized with the latest radar technology, even in the harshest environmental conditions.

Mechanical
Connection types M12 connector
Working temperature -40 °C ... +70 °C
Protection level IP67
Weight 740 g
Electrical
Accuracy bis ±0,1 mm
max. linearity bis ±1 mm / ±0,7 mm
Interfaces Analog 4–20 mA
PROFINET IO
Power supply 24 V DC
Fast and precise with maximum focus
  • Real-time measurement rate up to 500 Hz
  • Repeatability ±0.1 mm
  • Small opening angle of ±1.5° (3°)
Wide range of applications
  • Measuring range from 0.1 m to 6 m with extremely small blind zone at the start of the measuring range
  • As a stand-alone sensor or as a system solution
  • High-precision sensor solutions for distance measurement
  • Innovative system solutions for profile, width and thickness measurement
Maximum precision in the harshest environmental conditions
  • Latest radar technology in a robust metal housing
  • Air-cooled protective housing for extreme radiant heat
  • Even with dust, ash, water vapor and heat, the radar sensor measures the level of liquid metal reliably and accurately
Simple installation and commissioning
  • High level of integration into the application thanks to compact design
  • Suitable accessories for easy connection and alignment to the application - Visual feedback on the alignment of the sensor to the measurement object or visualization of the signal strength via LEDs.
PROFINET interface
  • Industrie 4.0 ready
  • Integrated web server
  • Additional 4 ... 20 mA interface and three digital switching outputs PNP/NPN
Intuitive operation
  • Graphical user interface for easy handling
  • Browser-based configuration software
  • Visualization of the echo curve (see what the sensor sees)
  • Numerous setting options and features for ideal adaptation to and increased performance in the application
Data sheet

RAD78D - PROFINET

PDF ∼ 525,8 KB | 09.2025
DE
EN
FR
Declaration of conformity

RADXX CE

Multilingual: German, English, French
PDF ∼ 159,5 KB | 04.2025

Mechanical CAD / STEP

RAD78x and Accessories

ZIP ∼ 1,0 MB | 01.2026

General information

Radar Spot Size Calculator

XLSX ∼ 263,2 KB | 02.2026
EN

Accessories

Radar angle reflector 100 mm

Radar angle reflector 100 mm

Increasing the signal strength received from a target.
Increasing the possible angle between sensor and target.
Increasing the measurement accuracy by increasing the signal strength.

  • Side length: 100 mm
  • Radar cross section: 17 m²
  • Object detection range: 0.5 m - 20 m
  • Material: 1.4301 (stainless steel)
  • Weight: 120 g
  • Dimensions: 100 mm x 82 mm x 91 mm
  • Fastening: 2 x M6
8.0000.7000.0081
Mechanical CAD / STEP
Radar angle reflector 100 mm - 8.0000.7000.0081

Radar angle reflector 250 mm

Radar angle reflector 250 mm

Increasing the signal strength received from a target.
Increasing the possible angle between sensor and target.
Increasing the measurement accuracy by increasing the signal strength.

  • Side length: 250 mm
  • Radar cross section: 677 m²
  • Object detection range: 10 m - 30 m
  • Material: 1.4301 (stainless steel)
  • Weight: 775 g
  • Dimensions: 250 x 171 x 221 mm
  • Fastening: 2 x M8
8.0000.7000.0082
Mechanical CAD / STEP
Radar angle reflector 250 mm - 8.0000.7000.0082

Heat protection housing with air cooling connection

Heat protection housing with air cooling connection

Air-cooled enclosure for extreme radiant heat, e.g., from molten metal.
Resistance up to 1600 °C
Short-term stress tolerance up to 700 °C
Suitable for ambient temperatures up to 120 °C
8.0000.7000.0085
Mechanical CAD / STEP
Heat protection housing with air cooling connection - 8.0000.7000.0085
Operation Manual
Installation of heat protection housing with air cooling connection, Art.No. 8.0000.7000.0085

Heat window

Heat window

Spare part for protective housing with connection for air cooling.
8.0000.7000.0086

Protective housing with deflection and connection for air cooling

Protective housing with deflection and connection for air cooling

8.0000.7000.0087

Mounting plate for sensor fine adjustment

Mounting plate for sensor fine adjustment

Mounting plate for fine adjustment of the RAD78x radar sensor within the mounting plate for optimal alignment of the sensor with the measurement target.
8.0000.7000.0088
Mechanical CAD / STEP
Mounting plate for sensor fine adjustment - 8.0000.7000.0088
Operation Manual
Quick alignment guide for fine adjustment of radar sensor RAD78x using mounting plate, Art.No. 8.0000.7000.0088

Radar angle reflector 250 mm

Radar angle reflector 250 mm

Increasing the signal strength received from a target.
Increasing the possible angle between sensor and target.
Increasing the measurement accuracy by increasing the signal strength.

  • Side length: 350 mm
  • Radar cross section: 2602 m²
  • Object detection range: 20 m - 70 m
  • Material: 1.4301 (stainless steel)
  • Weight: 1400 g
  • Dimensions: 350 mm x 210 mm x 307 mm
  • Fastening: 2 x M8
8.0000.7000.0091

Heat protection housing with connections for air cooling

Heat protection housing with connections for air cooling

Heat protection housing with connection for air cooling for closed furnaces and containers with high process temperatures.
8.0000.7000.0092

Cables and connectors

M12 Connector with cable ,

M12 Connector with cable ,

Preassembled cable set

EtherNet/IP
EtherCAT
PROFINET IO
Male connector 4-pin

Male connector 4-pin PUR Ø 6,5 mm ± 0,2 mm
2 x 2 x 0,34 mm2
05.00.6031.4444.XXXM

Data sheet
M12 cable set, PUR, 2xpin, 4-pin - 05.00.6031.4444.XXXM
DE EN FR

M12 Connector with cable ,

M12 Connector with cable ,

Preassembled cable set

EtherNet/IP
EtherCAT
PROFINET IO
Male connector 4-pin

Female connector 4-pin
05.00.6031.4542.XXXM

Data sheet
M12, PUR, male + female, angled, 4-pin, D-coded - 05.00.6031.4542
DE EN FR

RJ45 Connector with cable ,  Ethernet cable

RJ45 Connector with cable , Ethernet cable

Preassembled cable set

EtherNet/IP
EtherCAT
PROFINET IO
Male connector 8-pin

Male connector 4-pin PUR Ø 6,5 mm ± mm
4 x 0,34 mm2
05.00.6031.7444.XXXM

Data sheet
Cordset RJ45 connector + M12 pin, 4-pin, D-coded, PUR cable, Profibus - 05.00.6031.7444.xxxM
DE EN FR

M12 Connector with cable , 05.00.6051.8284.XXXM

M12 Connector with cable , 05.00.6051.8284.XXXM

Preassembled cable set

Analog ±10 V
HTL
TTL / RS422
Open Collector
SSI
BiSS
Female connector 8-pin

Male connector 8-pin PUR Ø 6,3 mm ± 0,2 mm
8 x 0,25 mm2
05.00.6051.8284.XXXM

Data sheet
M12 cordset, PUR, socket 8-pin, A-coded + pin - 05.00.6051.8284.0xxM
DE EN FR

M12 Connector ,

M12 Connector ,

Field-wireable connector

Analog ±10 V
HTL
TTL / RS422
SinCos
Open Collector
SSI
BiSS
Female connector 8-pin
05.CMB 8181-0

Data sheet
M12 socket, 8-pin, A-coded
DE EN FR

M12 Connector ,

M12 Connector ,

Field-wireable connector

EtherNet/IP
EtherCAT
PROFINET IO
Male connector 4-pin
05.WASCSY4S

Data sheet
M12 pin, 4-pole, D-coded
DE EN FR

M12 Connector ,

M12 Connector ,

Field-wireable connector

EtherNet/IP
EtherCAT
PROFINET IO
Male connector 4-pin
8.0000.5128.0000

Data sheet
M12 male, angled, 4-pin, D-coded - 8.0000.5128.0000
DE EN FR

„Do you have technical questions about the linear measurement technology or are you looking for individual solutions? We at Application Support are here for you.“

Steffen Ohmberger
Application support
Steffen Ohmberger
Application Engineer

support@kuebler.com
+49 7720 3903 392

„We will be pleased to give you information about prices and delivery times. We are looking forward to your inquiry.“

Fritz Kübler GmbH
Sales
Fritz Kübler GmbH
Sales Germany

info@kuebler.com
+49 7720 3903 871
+49 7720 21564