Prodotti >I nostri sensori >Sensori ottici >Hot Metal Detector / Interruttori di temperatura > Hot Metal Detector (HMD) in Protection Tube
Infrared Sensors (HMD) in Protection Tube
For installation in the roller conveyor, between the rollers.
Proxitron protection tubes for infrared sensors (HMD) can be integrated into the roller conveyor under the material, and are ideal when mounting above the rollers is not possible due to the plant structure or because of moving cranes.
A detection position quite near the hot material ensures accurate switching and reliable operation. The protection tubes are available in different lengths, with one, two or three optics, to meet the different application requirements, and also to offer different combinations for redundant control. Thanks to their integrated air purge and an extremely robust and maintenancefree construction, they feature trouble-free operation also with high material temperatures and heavy dirt formation.
The protection tube can be inserted from the side into the conveyor; this mounting method makes service or replacement possible also during operation - no need for plant shutdown. Belonging to the OX series, they can be parameterized in a teaching mode and offer the possibility to set different behaviors for multiple outputs, as well as an offset function with different response and switch-off temperatures, or an alarm function.
These sensors are equipped with a comfortable software interface to meet the needs of Industry 4.0.
Features at a glance
Robust stainless steel models
Systems with 1, 2 or 3 optics
Protection tubes in 1 or 2 m length
Integrated air purge connection
Variable optic position inside the roller conveyor
Service or replacement during operation
Response temperature from 400 up to 1000 °C
Three switching points in one single device
Alarm for sensor overheating or dirt
Teach and test function
Fast response time (0,3 ms / 1500 Hz)
Extremely robust and maintenance-free
Replaceable fibre optic cable and optics
Application areas
- Detection of hot objects
- Material tracking on roller conveyors
- Control of slabs, blocks and billets position at continuous casting
- Material control during hot rolling
- Activation of conveyors in hot areas
- Material detection in dense environment (dust and vapor)
- Strip detection in processes with spraying mists
Evaluation electronics for protection tube systems
Suitable evaluation electronics are available for each version
(1, 2 or 3 optical systems)
Response temperature 400 - 1000 °C
Parameters setting software
Standard function separate temperature settings for each output
Additional functions Teach, offset, alarm, test
Digital interface RS-485 (MODBUS RTU)
Housing [mm] 330 x 230 x 111
Housing material Aluminium
Ambient temperature 70 °C
Then please contact us using our contact form, call us on +49 4121 2621-0 or send us an email to sales@proxitron.de.
Our team will be pleased to advise and provide you with all the information you need!
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