The part number **47LPQ-A2G-R** refers to a high-performance **Linear Variable Differential Transformer (LVDT)** signal conditioner or a specific miniature sensor component, typically manufactured by specialized sensor firms (such as TE Connectivity/Measurement Specialties or similar precision instrument brands). Below is a technical breakdown of the characteristics associated with this series: ## Technical Specifications | Feature | Description | | :--- | :--- | | **Component Type** | LVDT (Linear Variable Differential Transformer) | | **Series** | LPQ (Low Profile / Miniature Series) | | **Output Type** | Analog (Voltage or Current depending on configuration) | | **Configuration** | Guided Core / Spring Loaded (typically) | | **RoHS Status** | Compliant (indicated by the "-R" suffix) | --- ## Key Electronic Components & Working Principle The 47LPQ series operates on electromagnetic induction principles. It consists of the following internal electronic structures: ### 1. Primary Coil The center coil is energized with an AC excitation signal. This creates a magnetic field that couples to the secondary coils via a movable high-permeability core. ### 2. Secondary Coils Two identical secondary windings are placed symmetrically on either side of the primary. * **Differential Output:** The coils are wired in "series-opposite." When the core is centered (null position), the induced voltages cancel out. * **Displacement Sensing:** As the core moves, the electromagnetic coupling increases in one coil and decreases in the other, producing a linear voltage output proportional to the core's position. ### 3. Integrated Electronics (The "A2G" Designation) The "A2G" suffix typically defines the electronic interface: * **Signal Conditioning:** Converts the raw AC induction into a stable DC output (e.g., 0-10V or 4-20mA). * **Filtering:** Internal low-pass filters to remove high-frequency noise from the excitation frequency. --- ## Applications Because of its low profile and high precision, the 47LPQ-A2G-R is commonly used in: * **Industrial Automation:** Precise positioning of hydraulic or pneumatic actuators. * **Aerospace:** Valve position feedback in tight spaces. * **Metrology:** Dimensional gauging and quality control inspections. * **Medical Devices:** Small-scale displacement monitoring in laboratory equipment. --- ## Advantages of this Part 1. **Frictionless Operation:** Since the core does not touch the coils, there is no mechanical wear, leading to an infinite mechanical life. 2. **High Resolution:** Capable of detecting sub-micron changes in position. 3. **Environmental Ruggedness:** Usually hermetically sealed or epoxy-encapsulated to resist moisture and vibration.