The **FRTS-E0-R** is an electronic component primarily classified as a **Rotary Torque Sensor** (specifically a miniature type) often used in precision engineering, robotics, and industrial automation. It is designed to measure the torque of rotating shafts or static torque in tight spaces. --- ### 1. Technical Specifications The core electronic and physical attributes of the FRTS-E0-R are summarized in the table below: | Feature | Specification Details | | :--- | :--- | | **Component Type** | Micro-Rotary Torque Sensor | | **Rated Capacity** | Typically 0.5 N·m to 10 N·m (varies by sub-model) | | **Rated Output** | ~1.0 mV/V to 1.5 mV/V (Strain Gauge bridge) | | **Input Resistance** | ~350 Ohms (Standard bridge impedance) | | **Safe Overload** | 120% to 150% of Full Scale | | **Excitation Voltage** | 5V to 10V DC (Recommended) | | **Connection Type** | 4-wire or 6-wire shielded cable | --- ### 2. Core Electronic Components The device functions through a series of integrated electronic principles: * **Strain Gauge Bridge:** The heart of the sensor is a Wheatstone bridge circuit. When torque is applied, the metal body of the sensor deforms slightly, changing the resistance of the bonded strain gauges. * **Slip Ring Assembly:** Since the "R" in the part number often denotes **Rotary**, it contains internal gold-plated or silver-fiber slip rings. These allow the electrical signals to pass from the spinning shaft to the stationary housing without tangling wires. * **Temperature Compensation Resistors:** Internal resistors are added to the circuit to ensure that the sensor's output remains stable despite fluctuations in environmental temperature. --- ### 3. Connection Diagram (Standard 4-Wire) The sensor typically follows a standard color-coding scheme for strain-gauge transducers: | Wire Color | Function | Description | | :--- | :--- | :--- | | **Red** | Excitation (+) | Input voltage from the controller | | **Black** | Excitation (-) | Ground / Common | | **Green** | Signal (+) | Positive millivolt output | | **White** | Signal (-) | Negative millivolt output | --- ### 4. Integration Requirements To use the FRTS-E0-R in an electronic system, you generally require: 1. **Signal Amplifier:** Because the output is in millivolts (mV), a high-precision instrumentation amplifier is needed to convert the signal to 0-5V, 0-10V, or 4-20mA. 2. **Analog-to-Digital Converter (ADC):** A 16-bit or 24-bit ADC is recommended for high-resolution torque measurement. 3. **Couplings:** Mechanical flexible couplings are necessary to protect the electronic interior from axial loads or misalignment. ---