The **PTPH-85G-R/CE** is a high-precision digital pressure sensor (pressure transducer) manufactured by **Nidec Components** (formerly Copal Electronics). It is part of the PTPH series, designed for industrial automation and vacuum technology. ### 1. Component Overview This device integrates a pressure-sensitive element with an internal signal conditioning circuit. It converts physical pressure into a standardized analog electrical signal. | Feature | Specification Details | | :--- | :--- | | **Model Type** | PTPH (High Precision Pressure Transducer) | | **Rated Pressure Range** | -0.1 to 1.0 MPa (Gauge Pressure) | | **Output Type** | Analog Voltage (R-type suffix usually denotes specific output ranges) | | **Power Supply** | 12V to 24V DC (Standard range) | | **Connection Port** | G 1/4 (Common for European and high-end industrial systems) | --- ### 2. Electronic Architecture The internal electronics consist of three primary stages: 1. **Sensing Element:** A **diffused silicon diaphragm**. When pressure is applied, the diaphragm deforms, changing the resistance of a Wheatstone bridge circuit embedded in the silicon. 2. **Signal Conditioning (IC):** An internal ASIC (Application-Specific Integrated Circuit) compensates for temperature fluctuations and non-linearity. 3. **Output Driver:** Converts the bridge voltage into a stable analog signal (typically **1-5V** or **0-5V**) that can be read by a PLC or Microcontroller. --- ### 3. Key Electronic Characteristics The "CE" suffix indicates compliance with European safety and electromagnetic compatibility (EMC) standards. | Characteristic | Description | | :--- | :--- | | **Linearity/Hysteresis** | High precision, typically within ±0.5% F.S. (Full Scale) | | **Thermal Drift** | Minimized via internal electronic compensation circuits | | **Overpressure Protection** | Built-in electrical protection against voltage spikes and reverse polarity | | **Connector** | Typically features an M12 or similar industrial circular connector for secure signal transmission | --- ### 4. Typical Wiring Diagram The device generally follows a standard 3-wire or 4-wire configuration: ```text Pin 1: Vcc (+) --- [12-24V DC Power] Pin 2: Output (+) --- [Analog Signal to PLC/ADC] Pin 3: GND (-) --- [Common Ground] Pin 4: Shield --- [Case Ground for EMI protection] ``` ---