The **KSL-G2-R** typically refers to a high-precision **Float Level Switch** (or Liquid Level Sensor) often used in industrial machinery, oil pressure systems, and cooling tanks. Below is a breakdown of its electronic and electromechanical components. ### 1. Technical Specifications Overview The "R" suffix generally indicates a specific contact type (often Normally Open or a specific lead wire configuration). | Feature | Specification (Typical) | | :--- | :--- | | **Switching Voltage** | AC 250V / DC 200V (Max) | | **Switching Current** | 0.5A (Max) | | **Contact Capacity** | 50VA / 50W | | **Contact Type** | Reed Switch (SPST or SPDT) | | **Material** | Stainless Steel (SUS304/316) or Brass | | **Lead Wire** | Heat-resistant PVC or Teflon insulated | --- ### 2. Core Electronic Components #### A. The Reed Switch The heart of the KSL-G2-R is a **magnetic reed switch** hermetically sealed inside the central stem. * **Mechanism:** It consists of two ferrous metal reeds. When the magnetic field from the float approaches, the reeds are pulled together to close the circuit. * **Durability:** Because the contacts are sealed in an inert gas environment, they are resistant to oxidation and corrosion. #### B. The Permanent Magnet Located inside the **moving float**. As the liquid level rises or falls, the float slides along the stem. The magnet's position relative to the reed switch determines the "ON" or "OFF" state. #### C. Output Configuration Depending on the wiring, the KSL-G2-R can operate in two modes: 1. **Normally Open (NO):** Circuit closes when the liquid reaches a specific level. 2. **Normally Closed (NC):** Circuit opens when the liquid reaches a specific level. *Note: Some models allow you to reverse the logic by flipping the float upside down.* --- ### 3. Application Circuit Diagram (Example) Since the KSL-G2-R is a low-current device, it should not drive heavy loads (like pumps) directly. It is typically used to trigger a **Relay** or a **PLC input**. ```mermaid graph LR A[Power Supply] --> B[KSL-G2-R Switch] B --> C[Relay Coil / PLC Input] C --> D[Ground/Neutral] ``` ### 4. Safety and Installation Notes * **Inductive Loads:** If using the switch with a relay, it is recommended to install a **diode** (for DC) or a **RC snubber** (for AC) to protect the reed switch from back-EMF voltage spikes. * **Temperature Limits:** Ensure the environment does not exceed the rated temperature (usually up to 100°C for stainless versions), as high heat can demagnetize the float. ---