The **PTPH-26G-R/CE** is a high-precision, industrial-grade **Platinum Resistance Temperature Detector (RTD)** probe, specifically a **Pt100** sensor. It is designed for accurate temperature measurement in demanding environments, particularly those involving high-pressure or corrosive media. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Sensor Type** | Pt100 (Platinum Resistance) | | **Resistance at 0°C** | 100 $\Omega$ | | **Tolerance Class** | Class A (High Accuracy) | | **Probe Material** | Stainless Steel (typically 316L) | | **Connection Type** | 3-wire or 4-wire configuration | | **Response Time** | High-speed response (G-series designation) | | **Mounting** | Threaded Process Connection (R-series) | --- ### 2. Detailed Electronic Characteristics #### A. Resistance-Temperature Relationship The sensor operates based on the **Callendar-Van Dusen equation**. As the temperature increases, the electrical resistance of the platinum wire increases linearly. - **Sensitivity:** Approximately $0.385 \Omega/^\circ\text{C}$. #### B. The "CE" and "R" Designations - **R (Threaded):** Indicates a rigid probe with a specific thread type (often BSP or NPT) for direct insertion into pipes or tanks. - **CE (Certification):** This signifies that the electronic component complies with European health, safety, and environmental protection standards. #### C. Wiring Configuration This part usually utilizes a **3-wire bridge circuit** to compensate for lead-wire resistance. This ensures that the distance between the probe and the controller does not degrade the accuracy of the temperature reading. --- ### 3. Application Use Cases 1. **HVAC Systems:** Monitoring chilled water or steam temperatures. 2. **Food & Beverage:** Temperature control in pasteurization or brewing vats. 3. **Chemical Processing:** Monitoring exothermic reactions where precision is critical. 4. **Pharmaceuticals:** Clean-in-place (CIP) system monitoring. --- ### 4. Integration Diagram (Simplified) ```python # Conceptual Resistance-to-Temperature Logic for Pt100 def calculate_temp(resistance): R0 = 100.0 # Resistance at 0 degrees alpha = 0.003851 # Standard coefficient # Simple linear approximation temperature = (resistance - R0) / (R0 * alpha) return temperature print(f"Temperature for 110 Ohms: {calculate_temp(110):.2f} C") ```