The **FRTS-HC-R/Q** series refers to a high-capacity, high-precision **Food Texture Analyzer** (Force Tester) manufactured by Imada. These devices are specialized instruments used to measure the physical properties of food, such as hardness, stickiness, and elasticity. Below is an explanation of its electronic components and system architecture. --- ## 1. Core Electronic Components The electronic system of the FRTS-HC-R/Q is designed for high-speed data sampling and precise motor control. | Component | Function | | :--- | :--- | | **Load Cell (Sensor)** | The primary transducer that converts mechanical force into an electrical signal. It uses strain gauges to detect tension/compression. | | **Microprocessor (CPU)** | Processes the analog signal from the load cell and manages the user interface and motor logic. | | **24-bit A/D Converter** | Converts the analog voltage from the load cell into a high-resolution digital value, ensuring precision even at low force levels. | | **Touch Screen Controller** | A resistive or capacitive interface that allows users to program testing sequences (Distance, Force, Time). | | **Stepper/Servo Motor Drive** | Controls the vertical movement of the probe with high positional accuracy (Resolution typically 0.01mm). | --- ## 2. Technical Specifications (Electronic Performance) The "HC" designation stands for **High Capacity**, meaning these units handle higher force ranges (up to 1000N) compared to standard lab models. ### Key Data Specs: * **Sampling Rate:** Typically **1000Hz (1000 data points per second)**. This is crucial for capturing sudden breaks in crispy foods. * **Internal Memory:** Stores test results and parameter presets (displacement speeds, force limits). * **Output Ports:** * **USB:** For PC connection to specialized software (Force Recorder). * **RS-232C:** For legacy industrial PLC integration. * **Analog Output:** Provides a voltage proportional to the force for external oscilloscopes. --- ## 3. Difference Between "R" and "Q" Models While both share the same mechanical frame, the electronic firmware and connectivity differ: ### FRTS-HC-R * **Target:** General research and laboratory use. * **Firmware:** Focused on standard texture profile analysis (TPA). * **Connectivity:** Optimized for "Force Recorder" software for graph generation. ### FRTS-HC-Q * **Target:** Quality Control and high-efficiency production environments. * **Electronic Feature:** Often includes enhanced automation features or specific firmware triggers to speed up pass/fail testing on production lines. --- ## 4. Safety & Protection Electronics To protect the sensitive load cell and the operator, the device integrates several protective circuits: 1. **Overload Prevention:** The CPU monitors force in real-time. If the force exceeds 110% of the rated capacity, the motor electronically brakes to prevent damaging the load cell. 2. **Limit Switches:** Electronic sensors at the top and bottom of the column prevent the probe from crashing into the base. 3. **Emergency Stop:** A physical hardware interrupt that cuts power to the motor drive immediately. ---