The **LPD-11MB-R** is a specific electronic component typically categorized as a **Liquid Level Sensor** (or Float Switch). It is commonly manufactured by companies like **Line Seiki** and is designed for industrial applications requiring fluid monitoring. --- ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | Vertical Mount Float Switch | | **Material** | Stainless Steel (typically SUS304 or SUS316) | | **Contact Form** | SPST (Single Pole Single Throw) | | **Switching Voltage** | Max 200V DC / 250V AC | | **Switching Current** | Max 0.5A | | **Operating Temperature** | -10°C to +120°C (depending on seal) | | **Mounting Thread** | M10 or 1/8" PT (varies by sub-model) | --- ## Key Features ### 1. Reed Switch Technology The internal mechanism consists of a **hermetically sealed reed switch** located inside the stem. As the float (which contains a permanent magnet) rises or falls with the liquid level, the magnetic field opens or closes the electrical circuit. ### 2. Durability Because the LPD-11MB-R is often made of stainless steel, it offers: * **Corrosion Resistance:** Suitable for water, oils, and mild chemicals. * **High-Pressure Resistance:** Unlike plastic versions, these can withstand higher pressure environments. ### 3. Reversibility In most models of this series, the operation can be changed from **Normally Open (NO)** to **Normally Closed (NC)** simply by removing the retaining ring and flipping the float upside down. --- ## Typical Wiring Diagram The device acts as a simple dry-contact switch. It is highly recommended to use a relay or an optoisolator when connecting to a PLC or Microcontroller to protect the reed switch from current spikes. ```cpp // Logic Representation [Liquid Level High] -> [Magnet Aligns] -> [Switch Closes] -> [Signal to Controller] ``` --- ## Applications * **Industrial Machinery:** Monitoring coolant levels in CNC machines. * **Food & Beverage:** Level sensing in stainless steel tanks. * **HVAC:** Condensate overflow detection. * **Automotive:** Oil or fuel level monitoring in test benches.