The **TS-51-R/C** (often referred to in the context of commercial kitchen equipment, specifically commercial rice cookers or industrial heating elements) is a specific model of an adjustable thermostat. Below is a detailed breakdown of its electronic components and functional specifications. --- ### 1. Component Overview The TS-51-R/C is an **EGO-style Capillary Thermostat**. It is an electromechanical device used to regulate temperature by opening or closing an electrical circuit. | Feature | Specification | | :--- | :--- | | **Type** | Liquid Expansion Capillary Thermostat | | **Temperature Range** | Typically 50°C to 320°C (depending on specific sub-model) | | **Voltage Rating** | 250V AC | | **Current Rating** | 16A to 20A (Resistive load) | | **Switch Type** | SPST (Single Pole Single Throw) or SPDT | --- ### 2. Key Internal Parts #### A. The Sensing Bulb and Capillary Tube * **The Bulb:** A hollow metal cylinder filled with a temperature-sensitive fluid (usually oil or a specialized synthetic liquid). * **The Capillary:** A very thin, flexible copper or stainless steel tube that connects the bulb to the main switch body. * **Physics:** When the bulb heats up, the internal liquid expands, moving through the capillary toward the bellows. #### B. The Diaphragm / Bellows * Located inside the plastic housing, this component acts as a mechanical actuator. * As the liquid expands, the pressure forces the bellows to expand, physically pushing a mechanical lever. #### C. Electrical Contacts * **Terminals:** Usually 6.3mm spade terminals (male). * **Switching Mechanism:** A snap-action switch that ensures the circuit is cut instantly to prevent "arcing" (sparks that damage the metal). --- ### 3. Connection Schematic Most TS-51 series thermostats follow a standard numbering system for their terminals: | Terminal Number | Function | | :--- | :--- | | **P1 / 1** | Line In (Phase) | | **2** | Load Out (To Heating Element) | | **Earth** | Grounding tab on the metal frame | --- ### 4. Technical Maintenance & Safety When dealing with the TS-51-R/C, keep the following electronic considerations in mind: 1. **Kink Sensitivity:** If the capillary tube is bent at a sharp angle or "kinked," the fluid cannot flow, and the thermostat will fail (usually staying in the "OFF" position). 2. **Calibration:** There is often a small calibration screw near the center shaft. This is factory-set and should generally not be adjusted in the field. 3. **Resistance Testing:** Using a multimeter, you should see **0Ω (Continuity)** between terminals 1 and 2 when the dial is turned to a high temperature, and **OL (Open Loop)** when the dial is turned to "Off." ---