The **RTS-3D4-R/E** is a high-precision digital rotary torque sensor. These devices are typically used in industrial automation, test benches, and quality control to measure torque on rotating shafts without physical contact interference. --- ## 1. Core Electronic Components The internal architecture of the RTS-3D4-R/E consists of several integrated subsystems: | Component Type | Function | Details | | :--- | :--- | :--- | | **Strain Gauge Bridge** | Physical Sensing | Uses a Wheatstone bridge configuration to convert mechanical torsion into a micro-volt electrical signal. | | **Telemetry System** | Signal Transfer | A non-contact (wireless) power and data transmission system between the rotor and stator. | | **A/D Converter** | Digital Processing | High-resolution (often 16-bit or 24-bit) analog-to-digital converter located on the rotor. | | **On-board Microprocessor** | Signal Conditioning | Handles zero-point calibration, temperature compensation, and filtering. | | **I/O Interface** | Communication | Supports industrial outputs like ±5V/±10V, 4-20mA, or digital RS485/CANbus. | --- ## 2. Technical Specifications The "R/E" designation often refers to specific encoder and rotation features. ### Key Electronic Parameters: * **Power Supply:** Generally 12V to 24V DC. * **Response Frequency:** High-speed sampling (often up to 1kHz or 10kHz depending on the specific model variation). * **Accuracy Class:** Typically 0.1% to 0.5% F.S. (Full Scale). * **Insulation Resistance:** >500MΩ at 100V DC to ensure electrical safety and noise reduction. --- ## 3. Working Principle 1. **Measurement:** As the shaft rotates, the **Strain Gauges** detect deformation. 2. **Conversion:** The analog signal is amplified and converted to digital data on the rotating shaft. 3. **Transmission:** The data is sent via **Inductive Coupling** (the "E" in many models stands for electromagnetic or encoder integration) to the stationary housing. 4. **Output:** The stationary electronics process the data and output it via the **3D4 connector** (a standard circular industrial connector). --- ## 4. Connection Interface The unit typically uses a multi-pin aviation plug (e.g., M12 or GX series). ```yaml Pin Configuration (Standard Example): 1: +Vcc (Power Input) 2: GND (Common Ground) 3: Torque Signal (±5V / 4-20mA) 4: Speed Signal (Pulse/Frequency) 5: RS485-A / CAN-H (Optional Digital) 6: RS485-B / CAN-L (Optional Digital) ```