General
Measurement range	-50...+250 °C
Diameter	5 mm
Thermocouple type	K

The Chauvin Arnoux SK7 is a K-type thermocouple probe specifically designed for measuring air temperatures in industrial and technical applications. It serves as a temperature sensor for detecting ambient temperatures in the range of -50 °C to +250 °C. The probe is 15 cm long and has a diameter of 5 mm, with the sensor protected by a metal sheath with a diameter of 8.5 mm. This construction ensures robust and reliable measurement in airflows or open environments.

Applications

The SK7 probe is suitable for use in systems where precise and rapid temperature measurement in air is required, for example in ventilation and air conditioning systems, in process industries, or for monitoring machine and equipment environments. The probe is suitable for continuous measurements in static or slightly moving airflows, with the metal sheath providing resistance to mechanical influences such as dust or light contamination.

Features and Equipment in Detail

The probe features a K-type thermocouple sensor, which is used due to its high sensitivity and stability over a wide temperature range. The measurement range of -50 °C to +250 °C covers most industrial applications. The response time is 5 seconds, enabling rapid reaction to temperature changes. The probe is equipped with a metal sheath that protects the sensitive sensor and provides mechanical stability. The sheath has a diameter of 8.5 mm, while the sensor itself has a diameter of 5 mm.

Technology Explained Simply

A K-type thermocouple operates based on the Seebeck effect: when there is a temperature difference at the junctions of two different metals, an electrical voltage is generated, proportional to the temperature difference. This voltage is converted by a measuring device into a temperature value. The SK7 probe is designed to implement this physical measurement method in a compact, robust design. The metal sheath ensures that the sensor does not come into direct contact with the environment, increasing its lifespan and stabilising measurement accuracy.

Compatibility and Accessories

The SK7 probe is designed for use with measuring instruments that support K-type thermocouples. It can be used in combination with digital temperature measuring devices, data loggers, or industrial control systems, provided these offer the appropriate input type for K-thermocouples. The probe is not supplied with additional components such as cables or connectors – it is delivered as a single sensor.

Mounting and Installation

Installation is carried out by mechanically securing the probe at the measurement point, for example using a holder or mounting in a suitable drilled hole. The probe should be positioned so that the sensor is fully immersed in the air stream to be measured, without being influenced by direct heat sources or cool surfaces. The metal sheath allows for easy installation and protects the sensor from mechanical damage.

Advantages in Operation

The SK7 probe offers high measurement accuracy within the specified temperature range and a fast response time, making it suitable for dynamic measurement tasks. The robust metal sheath increases service life and allows use in slightly contaminated or dusty environments. The compact design, 15 cm in length and 5 mm in diameter, ensures minimal disturbance to airflow during measurement.