High-temperature inductive sensors up to 250°C - reliable detection in extreme conditions

In many industrial processes, standard inductive sensors are unable to operate stably due to the high ambient temperatures.Paint shops, forges, forgings lines, industrial furnaces or drying rooms require solutions that can withstand continuous temperatures up to 250°C.

The answer to these needs is high-temperature inductive sensors with derived electronicsenabling safe and long-lasting detection of metallic objects in harsh production environments.

High-temperature inductive sensor with derived electronics - industrial applications

What is a high-temperature inductive sensor?

Principle of operation of inductive sensor for high temperatures

The high-temperature inductive sensor is a specially designed sensor in which:

• the sensor head works directly in the hot zone (up to 250°C),
• the electronics have been moved out of the high-temperature zone,
• the connection is made with a wire of length from 1 to 15 meters.

Such a solution significantly increases the life of the sensor and eliminates typical electronic failures caused by overheating.

Technical specification - Q40 high-temperature inductive sensor

Technical parameters of the sensor up to 250°C

High-temperature inductive sensor Q40 is designed to operate in the most demanding industrial environments.

• Type: high-temperature inductive sensor
• Size: Q40
• Output: PNP
• Operating mode: NO & NC
• Detection range (Sn): 25 mm
• Maximum operating temperature: 250°C
• Cable length between sensor and electronics: 1-15 m
• Electronics: separate from the sensor head

The long detection range allows the sensor to be mounted at a safe distance from the hot workpiece, further increasing the reliability of the system.

Why derived electronics are key in high-temperature sensors?

Temperature resistance of the inductive sensor

In standard inductive sensors, it is the electronics that are most sensitive to high temperatures.In high-temperature solutions:

• the electronics are outside the heating zone,
• the sensor maintains stable parameters even with prolonged operation,
• range drift and signal instability are eliminated,
• significantly extend the life of the sensor.

Applications for inductive sensors up to 250°C

High-temperature sensors in paint shops

• detection of details in paint ovens,
• controlling the presence of items on conveyors,
• resistance to high temperature, dust and fumes.

Inductive sensors in forges and forgings

• detection of heated metal components,
• working in close proximity to hot workpieces,
• resistance to thermal radiation and temperature spikes.

Heat treatment and industrial furnaces

• hardening lines,
• tunnel and chamber ovens,
• automation of high-temperature processes.

Other industrial applications

• industrial dryers,
• steel industry,
• process lines with continuous heating.

Advantages of Q40 high-temperature inductive sensor

• ✔ operation at temperatures up to 250°C
• ✔ derived electronics - high durability
• ✔ Detection range 25 mm
• ✔ output PNP NO & NC - easy integration with PLC
• ✔ ability to adjust cable length (1-15 m)
• ✔ ideal for harsh industrial environments

FAQ - UR technical questions (maintenance)

Can the sensor operate continuously at 250°C?

Yes.The sensor head is suitable for continuous operation at temperatures up to 250°C, provided that it is properly installed and the electronics are kept at an appropriate distance from the heat source.

Does cable length affect sensor performance?

Not.The sensor is designed to work with a cable length of 1 to 15 meters without affecting signal stability and detection range.

Where the electronics should be mounted?

Electronics should be mounted outside the high temperature zone, in a place that provides standard operating conditions (usually <60°C).

Does the sensor detect hot metal details?

Yes.The inductive sensor detects metal regardless of its temperature, provided the minimum distance is maintained and the sensor is installed correctly.

Is the sensor suitable for paint shops and ovens?

Yes.The sensor is designed specifically for paint shops, industrial furnaces, forges and heat treatments.

NO or NC - which output to choose?

The sensor offers NO & NC, which allows you to select the mode of operation according to safety requirements and PLC logic.

Can a custom length of cable be ordered?

Yes.Cable length can be adjusted from 1-15 meters to suit a specific application.