The **WPT-1B2-R** is a specific electronic component typically categorized as a **Water Pressure Transducer** or sensor. These components are essential in HVAC systems, water heaters, and industrial fluid management to convert physical pressure into an electrical signal. --- ### 1. Technical Specifications Below are the typical electronic characteristics of a pressure sensor in this series: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 5V DC (Typical) | | **Output Type** | Ratiometric Analog (0.5V to 4.5V) | | **Pressure Range** | Commonly 0 to 1.2 MPa (Variable by sub-model) | | **Connection Type** | 3-Pin connector (Power, Ground, Signal) | | **Operating Temp** | -20°C to +100°C | --- ### 2. Core Electronic Components The WPT-1B2-R functions through several internal stages: #### A. Piezoresistive Sensing Element The "heart" of the device is a silicon-based diaphragm. When water pressure is applied, the diaphragm deforms, changing the electrical resistance of the bridge circuit embedded within it. #### B. Signal Conditioning Circuit (ASIC) The raw signal from the sensing element is extremely small (millivolts). The internal Application-Specific Integrated Circuit (ASIC) performs the following: * **Amplification:** Boosts the signal to a usable 0-5V range. * **Temperature Compensation:** Corrects errors caused by changes in water temperature. * **Calibration:** Ensures the output is linear relative to the input pressure. #### C. EMI/RFI Protection The internal PCB includes small capacitors and resistors designed to filter out electromagnetic interference, ensuring the sensor doesn't provide "jumpy" readings when near motors or pumps. --- ### 3. Pinout Configuration Standard wiring for this sensor usually follows this logic: ```yaml Pin 1: VCC (+5V Power Supply) Pin 2: GND (Ground/Common) Pin 3: Vout (Analog Signal Output) ``` --- ### 4. Application Context The "R" in the part number often signifies a specific **connector orientation** or **RoHS compliance**. You will most commonly find this part in: * Wall-hung gas boilers. * Heat pump water heaters. * Smart irrigation controllers.