General
Measurement range	0...+250 °C
Diameter	5 mm
Thermocouple type	K

The Chauvin Arnoux SK4 is a surface thermocouple of type K, specifically developed for temperature measurements on small or sensitive surfaces. It is suitable for applications where direct, flat contact measurement is required, without damaging the surface through drilling or deep insertion. The probe is used in measurement technology where precise and fast temperature values are needed, for example in quality control, machine building, or electrical engineering.

Applications

The SK4 thermocouple is designed for surface measurements where the temperature at the outer surface of an object is to be recorded. Typical applications include monitoring heating elements, electronic assemblies, motors, or other components where invasive measurement is not possible or desired. The small size of 5 mm diameter allows measurement on narrow or curved surfaces without impairing the object's structure.

Features and Equipment in Detail

The probe has a measurement range of 0 °C to +250 °C, making it suitable for a wide range of industrial and technical applications. The response time is 1 second, enabling fast reaction to temperature changes. The probe length is 15 cm, allowing flexible use at various distances. The 5 mm diameter ensures a compact form that adapts well to small surfaces.

Technology Explained Simply

The SK4 operates as a type K thermocouple, based on the Seebeck effect. At the contact point of two different metals, a voltage is generated that is proportional to the temperature difference. This voltage is converted by a suitable measuring device (e.g., a digital thermometer or data logger) into a temperature reading. The probe is designed for direct surface placement, with heat transfer occurring via metallic contact. The short response time of 1 second allows timely detection of temperature changes, which is particularly advantageous in dynamic processes.

Compatibility and Accessories

The SK4 thermocouple is designed for use with measuring devices that support type K thermocouples. It is typically connected via a matching connector plug or cable, which is then connected to the measuring device. The exact connection technique depends on the specific measuring device used. It is important that the measuring device provides the appropriate temperature measurement range and signal processing for type K thermocouples.

Mounting and Installation

Mounting is done by direct contact of the probe with the surface to be measured. The probe is placed on the surface and can be fixed, depending on the application, with adhesive, a holding clamp, or another suitable method to ensure stable heat transfer. A good thermal contact surface is crucial for measurement accuracy. The 15 cm length allows flexible positioning, even if the measurement point is not directly connected to the device.

Advantages in Operation

The combination of compact design, fast response time, and wide measurement range makes the SK4 a reliable solution for surface measurements. The short response time of 1 second enables timely reaction to temperature changes, which is especially useful for process monitoring or diagnosing overheating. The robust construction and use of type K materials ensure high stability and durability under industrial conditions. The probe is designed for use in environments with moderate temperatures up to 250 °C, with the probe surface directly contacting the surface to be measured.