The **FTS-5E-R** is an industrial-grade **Spring-Loaded Temperature Sensor** (Thermocouple or RTD), typically utilized in plastic extrusion, injection molding, and packaging machinery. Below is a breakdown of its electronic components and technical specifications. --- ## 1. Core Electronic Components The FTS-5E-R functions primarily as a transducer, converting thermal energy into an electrical signal. | Component | Description | Function | | :--- | :--- | :--- | | **Sensing Element** | Typically a **Type J** or **Type K** thermocouple, or a **Pt100** RTD. | Generates a millivolt signal (TC) or changes resistance (RTD) based on temperature. | | **Spring Mechanism** | A stainless steel compression spring. | Ensures the tip maintains constant physical contact with the surface for accurate heat transfer. | | **Lead Wires** | Fiberglass or Teflon-insulated wires, often with a stainless steel overbraid. | Transmits the electrical signal to the controller or PLC. | | **Bayonet Cap** | A slotted metal cap (usually 12mm or 14mm). | Secures the sensor into a bayonet adapter via a twist-lock mechanism. | --- ## 2. Technical Specifications Depending on the specific configuration of the "5E" series, the electrical characteristics usually fall within these ranges: ### Electrical & Thermal Data * **Sensor Type:** Type J (Iron/Constantan) is most common for this form factor. * **Temperature Range:** * **Type J:** 0°C to 450°C (32°F to 842°F). * **Type K:** 0°C to 600°C (32°F to 1112°F). * **Accuracy:** Standard Limits of Error (±2.2°C or ±0.75%). * **Insulation Resistance:** >100 MΩ at 500V DC (at room temperature). --- ## 3. Wiring Configuration The wiring depends on whether the unit is a Thermocouple or an RTD. ### Thermocouple Wiring (Most Common) | Wire Color (ANSI) | Polarity | Material | | :--- | :--- | :--- | | **White** | Positive (+) | Iron (Type J) | | **Red** | Negative (-) | Constantan (Type J) | ### RTD Wiring (3-Wire) * **Red (x2):** Common/Compensation loop. * **White (x1):** Main signal line. --- ## 4. Key Features for Electronics Integration 1. **Cold Junction Compensation (CJC):** If using a thermocouple, the receiving electronic controller must have CJC to account for the temperature at the connection terminals. 2. **Shielding:** The stainless steel overbraid (the "R" often denotes a ruggedized or braided lead) acts as an EMI shield to prevent electrical noise from heaters or motors from interfering with the low-voltage signal. 3. **Response Time:** Because it is spring-loaded, the "Time Constant" is minimized due to the elimination of air gaps between the sensor and the well. ---