The **FRTD-R-JC-L** is a specialized precision sensing component, typically associated with **Resistance Temperature Detectors (RTD)** used in industrial automation and climate control systems. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Technical Specifications This part is designed for high-accuracy temperature monitoring. The "RTD" designation indicates it operates on the principle of resistance change relative to temperature. | Feature | Specification | | :--- | :--- | | **Sensor Type** | RTD (Resistance Temperature Detector) | | **Element Material** | Typically Platinum (Pt100 or Pt1000) | | **Configuration** | L-Type (Jacketed/Lead wire structure) | | **Connection Type** | JC (Junction Connector / Specialized Coupling) | | **Accuracy Class** | Class A or Class B (Standard Industrial) | | **Operating Range** | -50°C to +250°C (standard jacketed range) | --- ### 2. Key Electronic Components The device consists of three primary electronic sections: * **The Sensing Element:** A fine wire (usually platinum) wrapped around a ceramic or glass core. As the temperature rises, the electrical resistance increases in a predictable, linear fashion. * **The Lead Wires (L-Series):** These are insulated conductors that transmit the resistance signal. In the "L" configuration, these are often shielded to prevent electromagnetic interference (EMI) from affecting the reading. * **Jacketed Protection (JC):** The "JC" suffix often refers to a protective jacket or specialized connector housing that protects the delicate internal wiring from moisture, chemicals, and mechanical stress. --- ### 3. Working Principle The FRTD-R-JC-L operates based on the **Callendar-Van Dusen equation**. Unlike thermocouples that produce a voltage, this part acts as a variable resistor: 1. A small, constant current is passed through the sensor. 2. The sensor's resistance changes based on the ambient temperature. 3. The voltage drop across the sensor is measured by a controller (PLC or Thermostat). 4. The controller converts this voltage/resistance value into a precise temperature reading. --- ### 4. Applications Due to its "JC" (Junction/Jacket) and "L" (Lead) design, this part is commonly found in: * **HVAC Systems:** Monitoring duct temperatures. * **Medical Equipment:** Precise cooling or heating chamber control. * **Industrial Ovens:** Where vibration resistance and stable lead connections are required. * **Laboratory Instruments:** High-precision thermal analysis. ---