The **TP05-R50-DB** is a high-precision, industrial-grade temperature sensor assembly. It belongs to the **Platinum Resistance Thermometer (PRT)** family, specifically utilizing a **Pt100** or **Pt1000** sensing element. ### 1. Component Specifications The following table highlights the core technical characteristics of the TP05-R50-DB: | Feature | Specification Details | | :--- | :--- | | **Sensing Element** | Pt100 (Platinum Resistance) | | **Tolerance Class** | Class A or Class B (per IEC 60751) | | **Nominal Resistance** | 100 $\Omega$ at 0°C | | **Probe Diameter** | 5.0 mm | | **Probe Length** | 50 mm (indicated by "R50") | | **Wiring Configuration** | 2-wire or 3-wire system (DB usually denotes a specific connector/housing) | | **Operating Range** | Typically -50°C to +250°C (depending on lead insulation) | --- ### 2. Internal Electronic Structure The device operates on the principle of **Resistance Temperature Detection (RTD)**. The resistance of the platinum wire inside increases linearly with temperature. #### A. The Sensing Element The "heart" of the component is a thin-film platinum resistor deposited onto a ceramic substrate. This provides: * **Stability:** High resistance to drift over time. * **Linearity:** Easier calibration compared to thermistors. #### B. The Probe Housing (R50) The "R50" refers to the **50mm stainless steel sheath**. This protects the fragile platinum element from: * Mechanical impact. * Corrosive fluids or gases. * Moisture ingress (Hermetic sealing). --- ### 3. Connection and Integration The "DB" suffix typically refers to the electrical termination or the mounting bracket style (e.g., a "Double" lead or specific connector block). ```python # Standard Resistance-to-Temperature (Callendar-Van Dusen) Calculation def get_resistance(temp_c): R0 = 100.0 # Resistance at 0 degrees alpha = 0.003851 # Standard temperature coefficient return R0 * (1 + alpha * temp_c) # Example: Resistance at 100 degrees Celsius print(f"Resistance at 100C: {get_resistance(100):.2f} Ohms") # Output: 138.51 Ohms ``` --- ### 4. Typical Applications * **HVAC Systems:** Monitoring duct temperatures. * **Industrial Automation:** Overheat protection for motors or bearings. * **Laboratory Equipment:** Precise climate control in incubators.