Johdotuslämpömittarin

Johdotuslämpömittari, often translated as wiring thermometer or lead-wire thermometer, is a type of temperature sensor that utilizes a thermocouple or resistance temperature detector (RTD) integrated into a flexible, insulated cable. The sensor element is located at one end of the cable, while the other end typically terminates in a connector or bare wires for connection to a measuring instrument or control system.

These sensors are designed for applications where direct contact with a surface or immersion into a medium is required, but where a rigid probe might be impractical or undesirable. The flexible nature of the johdotuslämpömittari allows it to conform to curved surfaces, fit into tight spaces, or be routed around obstacles. The insulation protects the sensing element and the internal wires from environmental factors such as moisture, chemicals, or abrasion, depending on the specific construction materials.

Common applications for johdotuslämpömittari include monitoring temperatures in machinery, pipelines, electrical cabinets, and various industrial processes. They are particularly useful for measuring the temperature of moving parts or in situations where frequent repositioning of the sensor is necessary. The choice between a thermocouple and an RTD within the johdotuslämpömittari depends on the required temperature range, accuracy, and response time of the application. Thermocouples are generally suitable for higher temperatures and offer faster response, while RTDs provide greater accuracy and stability over a wider temperature range.