It is not a measurement system. It's a solution.

The wtl series delivers precise and robust information from the toughest process stages in continuous casting and hot rolling of flats, longs or heavy plates. The software running the solution distributes digital information to any production level for a flexible production and beyond. Know your production results and perform precise in-line interventions for improved yield.

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Measuring Geometry

Measuring Angle or Position

Measuring in Casting


Components and enhancements

Any solution starts with two sensors (IP68) and a process unit. Cooling or ceramic shield away extreme heat. The process unit can be placed at a distance of up to 100 meters. Specific mill needs are met by adding further sensor pairs or third-party sensors – also to deliver further information, such as cold values or center positions.

*The measurement result at a defined measuring point has to be determined by a sensor pair.

Dynamic configuration

Due to its modular arrangement, the wtl series fits perfectly into your production line. The small size of the sensors enables positioning even in narrow shop floor layouts. The number of sensor pairs used depends on the tasks to be performed. Even if your information needs change over time, your solution from the wtl series can grow with them by adding further sensor pairs or additional sensors.


Smart monitoring

Smart monitoring is essential for smart maintenance processes or foreseeing potential downtimes in  your production. With the Watchdog Package status information can be transmitted via WebSockets to the person in charge, ERP system or any other third party application. It can deliver the status of single sensors, the whole solution and even the running services. An enhanced dashboard for smart monitoring offers multiple surveillance functions.


The wtl series communicates via Modbus/TCP with the PLC. The additional COM package offers more interfaces: via TCP/IP, REST or MQTT information can be delivered further on to several recipients on multiple levels, in the plant and also beyond.

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Trigger modes

Plant layouts, processes and control cycles are highly individual. To best meet your needs the wtl series offers different trigger options to start gauging. You can set up signal triggering to start a measurement – either by PLC, IT or self-triggered in a fixed time cycle. Or you can decide for non-triggered, continuous measurement of the width, thickness or length of your products

Technical Data

Find out more about the wtl series in the technical data:

Scope of delivery sensor pairs, calculation unit, Power supply
Minimum number of sensor pairs connected to a system 2
Maximum number of sensor pairs connected to a system 16
Temperature Independent Measurement Hot or Cold1 dimension
Pyrometer Integration Integration of standard wtl third party Pyrometer1
Sensor housing material options Aluminum alloy or Stainless Steel according to customer's choice
Process Unit Delivery Switch cabinet or protected housing9
Protection IP20 (switch cabinet), IP68 (protected housing), IP68/IP69K (radar sensor unit)
Certification CE
Power 230 VAC / 50 Hz or
110 VAC/ 60 Hz for U.S. Market available
Power consumption ~500 Watt (with 16 Sensors)
Measurement principle FMCW-Radar
Radar Sensor SiGe RadarChip
Band 122 GHz-band ISM, 0,9 GHz bandwidth; further bandwidth on request
Data fusion High-performance embedded system
Communication Modbus TCP
TCP/IP, REST or MQTT available in the COM service package
Trigger modes for measurement non triggered, triggered by PLC, IT2 or self-triggered
PLC Interface Modbus TCP/IP
Alternative Communication Interface2 MQTT3 with QoS2, REST4 or a raw TCP/IP5
Additional Communication Capabilities2 Receive information for a measurement e.g. reference values, trigger signals, material identification and more
Monitoring Interface6 WebSockets or MQTT3 with QoS 2
Monitoring Capabilities6 Internal information of Sensors and Processing Unit, their Metadata and measurement related information
Interface Encryption Transport Layer Security (TLS), additional RFC 7519 Industry Standard7
Web Configuration Dashboard Embedded Web Application for observing and calibrating the Solution
Browser Compatibility Chrome/Edge8
Sensor Measurement rate 50 Hz default
1 Pyrometer integration is needed
2 Alternative Communication interface (COM Module) is needed
3 MQTT Broker is not included
4 Customer side has to implement its own mechanisms to connect to the REST interface. Cannot be used for non triggered measurements
5 We propose the use of MQTT or REST over TCP/IP due to their authentication processes
6 Monitoring Interface (Watchdog Module) is needed
7 For REST/Websocket interfaces
8 Firefox is not supported; All Chrome based Browsers are supported
9 Stable up to 260°C


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