The **ES1CL-CA2-R** is a specific model within the Omron **ES1C Series** of non-contact infrared temperature sensors. This industrial-grade component is designed to measure the surface temperature of objects without physical contact, converting the thermal radiation into an electrical signal. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical and physical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Omron Automation | | **Sensor Type** | Infrared (Non-contact) | | **Temperature Range** | 0°C to 400°C | | **Output Type** | K-Type Thermocouple equivalent | | **Power Supply** | 12 to 24 VDC | | **Response Time** | 100 ms (approximate) | | **Distance-to-Spot Ratio** | 1:1 (Field of view) | | **Cable Length** | 2 meters (standard) | --- ### 2. Electronic Architecture & Functionality The ES1CL-CA2-R operates using several integrated electronic stages: * **Infrared Detection Cell:** A thermopile element absorbs infrared radiation from the target object. * **Signal Conditioning:** The weak micro-voltage from the thermopile is amplified and linearized using internal circuitry. * **Thermocouple Emulation:** Unlike standard digital sensors, this device mimics the output of a **K-type thermocouple**. This allows it to be wired directly into standard temperature controllers or PLC input modules without needing special infrared drivers. * **Compensation:** It includes internal ambient temperature compensation to ensure the output remains accurate even if the sensor body heats up. --- ### 3. Wiring and Pinout The sensor typically features a 4-wire or 3-wire configuration depending on the exact sub-revision, but generally follows this logic: | Wire Color | Function | Description | | :--- | :--- | :--- | | **Brown** | VCC | Power Supply (+) 12-24VDC | | **Blue** | 0V / GND | Power Supply Common (-) | | **White** | TC (+) | Positive Thermocouple Output (K-type) | | **Green** | TC (-) | Negative Thermocouple Output (K-type) | --- ### 4. Application Use-Cases * **Moving Objects:** Measuring temperatures on conveyor belts or rotating machinery where wires cannot be attached. * **High Voltage Areas:** Measuring components that are electrically "live" and cannot be touched by a metal probe. * **Food Industry:** Non-contact measurement to maintain hygiene and prevent cross-contamination.