The **M5TS-60-R/BL** is a specialized high-temperature resistance temperature detector (RTD) probe, typically manufactured by companies like **Anritsu Meter**. It is primarily designed for surface temperature measurement in industrial and laboratory settings. --- ### 1. General Specifications The part number breaks down into specific technical characteristics regarding its construction and electrical behavior. | Feature | Specification | | :--- | :--- | | **Sensor Type** | Pt100 (Platinum Resistance) | | **Temperature Range** | -50°C to +600°C (approx.) | | **Probe Tip Shape** | Static Surface Type (Flat) | | **Lead Wire Length** | Typically 1 meter (Standard) | | **Output Type** | Resistance (Ω) | --- ### 2. Electronic Components & Construction #### A. The Pt100 Element The core electronic component is a **Platinum Resistance Thermometer (PRT)**. - **Nominal Resistance:** 100 $\Omega$ at 0°C. - **Accuracy Class:** Usually Class A or Class B (per IEC 751 standards). - **Function:** As temperature increases, the electrical resistance of the platinum wire increases linearly. This change is measured by a controller to determine the temperature. #### B. The Sensing Head The "60" in the model name often refers to the specific head configuration or temperature rating (600°C). - **Material:** High-thermal-conductivity ceramic or metal base. - **Contact:** Designed for static surfaces; the flat head ensures maximum surface area contact to reduce measurement error. #### C. Internal Wiring (The "BL" Designation) The **BL** suffix typically refers to the lead wire type or termination: - **Insulation:** Usually glass fiber or fluororesin with stainless steel overbraiding to withstand high heat. - **Connection:** 3-wire or 4-wire configuration to compensate for lead wire resistance, ensuring high precision over long distances. --- ### 3. Application Circuitry To read the M5TS-60-R/BL, the sensor must be integrated into a measurement bridge or a constant current source circuit. ```python # Conceptual logic for converting Resistance to Temperature (Callendar-Van Dusen) def resistance_to_temp(R): R0 = 100.0 # Resistance at 0°C alpha = 0.003851 # Standard platinum coefficient return (R - R0) / (R0 * alpha) # Example: If measured resistance is 138.51 Ohms # Temperature = (138.51 - 100) / (100 * 0.003851) = 100°C ``` --- ### 4. Summary of Use Cases * **Hot Plate Monitoring:** Measuring the surface of laboratory heaters. * **Mold/Die Testing:** Checking the temperature of metal molds in plastic injection. * **Motor Housing:** Monitoring the external temperature of high-performance electric motors.