The **86-030G-R** is a high-performance, small-profile, media-compatible piezoresistive silicon pressure sensor. It belongs to a specialized class of pressure transducers designed for mounting on printed circuit boards (PCBs). --- ### 1. General Specifications This part is specifically engineered for precision measurements in environments where space is limited and media compatibility is required. | Parameter | Specification | | :--- | :--- | | **Pressure Range** | 0 to 30 psi | | **Pressure Type** | Gage (referenced to atmospheric pressure) | | **Output Type** | Analog Voltage (Uncompensated/mV) | | **Operating Temperature** | -40°C to +125°C | | **Accuracy/Linearity** | ±0.1% Span | | **Mounting Style** | Surface Mount (SMD) / Board Mount | --- ### 2. Internal Electronic Structure The sensor operates based on the **piezoresistive effect**. Inside the housing, there is a micro-machined silicon die containing a Wheatstone bridge. #### Key Components: 1. **Silicon Die:** The core sensing element that changes resistance when mechanical stress (pressure) is applied. 2. **Oil-Filled Cavity:** The die is submerged in silicone oil and isolated from the media by a 316L stainless steel diaphragm. This allows it to measure liquids and harsh gases without damaging the electronics. 3. **Wheatstone Bridge:** The electrical circuit configuration used to convert the change in resistance into a measurable differential voltage (mV). 4. **Pins/Leads:** Typically 12-14 gold-plated pins for connection to the PCB. --- ### 3. Electrical Characteristics Because the "R" in the part number usually denotes an uncompensated/standard output, the electronic integration requires external circuitry. * **Excitation:** It can be driven by a constant current (typically 1.5mA) or a constant voltage (typically 10V DC). * **Bridge Impedance:** Generally falls within the 2kΩ to 8kΩ range. * **Signal Conditioning:** The raw output is in millivolts (mV). To interface with a Microcontroller (MCU), you typically need an **Instrumentation Amplifier** and an **Analog-to-Digital Converter (ADC)**. --- ### 4. Typical Applications * **Medical Instruments:** Dialysis machines and infusion pumps. * **Industrial Controls:** Hydraulic and pneumatic pressure monitoring. * **Process Control:** Tank level measurement and leak detection. * **Oceanography:** Depth and pressure monitoring in marine environments. ---