Immersion temperature sensor, passive

Immersion temperature sensors, also known as immersion thermocouples or RTD probes, are passive devices designed for direct contact temperature measurement in liquid or gaseous media. These sensors typically feature a stainless steel or Inconel sheath with a sensing element at the tip, such as a Pt100 RTD or Type K thermocouple. Key technical parameters include measuring range (e.g., -50°C to +600°C), probe diameter (e.g., 3mm to 12mm), insertion length (e.g., 50mm to 500mm), and connection type (e.g., 2-wire, 3-wire, or 4-wire for RTDs, or thermocouple connectors). The passive nature means they require an external transmitter or PLC input module to convert the resistance or voltage signal into a readable temperature value. Protection classes like IP65 or IP67 are common for industrial environments.

These sensors are widely used in process automation, HVAC systems, food and beverage processing, chemical plants, and power generation. They are installed in pipelines, tanks, boilers, and heat exchangers to monitor and control fluid temperatures. In industrial automation, they integrate with PLCs, DCS, or temperature controllers for closed-loop regulation. Applications include monitoring cooling water circuits, oil temperature in hydraulic systems, and process fluids in pharmaceutical manufacturing.

Subcategories include RTD immersion sensors (e.g., Pt100, Pt1000), thermocouple immersion sensors (Type J, K, T, N), and compact immersion probes with integrated transmitters. Common article codes follow patterns like TSP-100-200-3 (Temperature Sensor Pt100, 200mm insertion, 3mm diameter) or TC-K-300-6 (Thermocouple Type K, 300mm insertion, 6mm diameter). Specific models include the EAN-TSP-100-100-4 and EAN-TCK-500-8, which are available with various connection heads and process connections like G1/2 or NPT.

At Electric Automation Network, we offer express worldwide shipping and personalized technical support from specialized engineers. Our portal provides real-time pricing, detailed technical documentation for each article, and multilingual assistance. Whether you need a standard Pt100 probe or a custom thermocouple assembly, our team ensures fast delivery and expert guidance for your temperature measurement applications.