The **PRM1-R100-G** is a high-performance **Pressure Sensor Module** typically used in industrial and consumer electronics for measuring gas or liquid pressure. It is characterized by its compact size and integrated signal conditioning. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics: | Parameter | Value / Specification | | :--- | :--- | | **Part Number** | PRM1-R100-G | | **Pressure Type** | Gauge Pressure | | **Pressure Range** | 0 to 100 psi (approx. 7 bar) | | **Input Voltage** | 5.0 VDC (Typical) | | **Output Type** | Analog Voltage (Ratiometric) | | **Operating Temp** | -20°C to +85°C | | **Accuracy** | ±1.0% to ±2.0% FS (Full Scale) | --- ### 2. Core Components & Operation The electronic architecture of the PRM1 series generally consists of three main stages: 1. **Sensing Element (MEMS):** * Uses a Piezo-resistive Micro-Electro-Mechanical Systems (MEMS) die. * When pressure is applied, the silicon diaphragm deforms, changing the resistance of the bridge circuit. 2. **Signal Conditioning (ASIC):** * The raw millivolt signal from the MEMS sensor is very weak and sensitive to temperature. * An internal **Application Specific Integrated Circuit (ASIC)** amplifies the signal, performs temperature compensation, and linearizes the output. 3. **Output Interface:** * The "G" suffix usually denotes a **Gauge** pressure reference, meaning it measures pressure relative to the atmospheric ambient pressure. * The output is typically **Ratiometric**, meaning the output voltage scales linearly with the supply voltage (e.g., 0.5V to 4.5V output on a 5V supply). --- ### 3. Implementation Logic If you are connecting this part to a microcontroller (like an Arduino or ESP32), you would use a standard ADC (Analog-to-Digital Converter) circuit. ```cpp // Example: Converting PRM1 Analog Output to Pressure (PSI) float sensorValue = analogRead(A0); float voltage = (sensorValue / 1023.0) * 5.0; // Assuming 5V system // Formula based on typical 0.5V - 4.5V transfer function // Pressure = (Voltage - Offset) * (Range / Span) float pressurePSI = (voltage - 0.5) * (100.0 / 4.0); ``` --- ### 4. Typical Applications * **HVAC Systems:** Monitoring refrigerant or air pressure. * **Pneumatic Tools:** Monitoring tank pressure in compressors. * **Water Pumps:** Dry-run protection and pressure regulation. * **Industrial Automation:** Real-time feedback in process control loops.