The **PPD-C1M1R-R** is a specific model within the series of industrial pressure sensors/switches, typically associated with brands like **Azbil (formerly Yamatake)**. It is a compact, high-precision digital pressure sensor designed for air and non-corrosive gas applications. --- ### 1. Key Technical Specifications Below are the core electronic and physical parameters for the PPD-C1M1R-R: | Parameter | Specification | | :--- | :--- | | **Pressure Range** | 0.0 to -101.3 kPa (Vacuum Type) | | **Power Supply** | 12 to 24V DC (±10%) | | **Output Type** | 1 NPN Open Collector Output + 1 Analog Output (1-5V) | | **Current Consumption** | ≤ 40mA | | **Response Time** | ≤ 2.5ms (Selectable options available) | | **Connection Port** | M5 Female Thread / R1/8 Male Thread | | **Display** | 3.5 Digit Red LED | --- ### 2. Electronic Component Breakdown The device functions through a combination of sensing elements and signal processing circuitry: #### A. Piezoresistive Sensing Element The "heart" of the sensor is a silicon-based piezoresistive element. When vacuum pressure is applied, the silicon diaphragm deforms, changing the electrical resistance. This change is proportional to the pressure. #### B. Signal Conditioning Circuit (ASIC) Internal circuitry converts the raw millivolt signal from the sensor element into a stable, linearized electronic signal. * **Analog Output:** It generates a **1-5V DC** signal. This allows an external PLC (Programmable Logic Controller) to monitor the exact pressure value in real-time. * **Digital Switching:** The **NPN Open Collector** output acts as a "switch." When the pressure crosses a user-defined threshold (set via the buttons), the transistor closes, completing a circuit to ground. #### C. User Interface & Display * **LED Display:** Provides visual feedback of the current pressure. * **Programming Buttons:** Allows the user to set the "Set Point" (where the switch triggers) and "Hysteresis" (to prevent rapid flickering near the set point). --- ### 3. Wiring Diagram Logic To integrate this part into an electronic system, the standard wiring color code is usually followed: 1. **Brown:** Positive Power Supply (+V). 2. **Blue:** Negative/Ground (0V). 3. **Black:** Control Output (NPN Switch). 4. **White:** Analog Output (1-5V). --- ### 4. Application Use-Cases * **Pick-and-Place Machines:** To confirm that a vacuum suction cup has successfully grabbed a component. * **Leak Testing:** Monitoring pressure decay in a sealed system. * **Pneumatic Monitoring:** Ensuring vacuum lines are operating within safe parameters for automated machinery.