The **F03-13** is a specific part number associated with the **Omron Sensing Band**, primarily used for liquid leakage detection systems. It is an accessory designed to be paired with Omron leak detectors (such as the K7L or 61F series). Below is a detailed breakdown of the electronic and mechanical characteristics of the F03-13. --- ### 1. Overview and Construction The F03-13 is a point-sensor or "Sensing Band" designed to detect the presence of water or other conductive liquids. Unlike standard wires, it is engineered to maximize surface area contact with moisture. | Component | Material/Specification | | :--- | :--- | | **Core Material** | Stainless Steel (SUS304) | | **Insulator** | Polyethylene | | **Detection Method** | Electrical Conductivity | | **Standard Lengths** | 1m, 5m, 10m, 20m, 50m | ### 2. Electronic Working Principle The F03-13 operates based on the principle of **Conductivity**. * **Open Circuit:** Under dry conditions, the air or the dry band acts as an insulator between the conductive stainless steel cores. The resistance is extremely high (infinite). * **Closed Circuit:** When liquid contacts the band, the liquid creates a bridge between the electrodes. This lowers the resistance significantly. * **Signal Output:** The connected Leakage Sensor (e.g., K7L) detects this drop in resistance and triggers an alarm or switches a relay. ### 3. Key Electronic Specifications These specifications are critical when integrating the band into a control system: | Feature | Description | | :--- | :--- | | **Operating Temperature** | -15°C to +60°C | | **Resistance** | Approx. 1 mΩ per meter | | **Dielectric Strength** | 1,000 VAC for 1 minute | | **Insulation Resistance** | 10 MΩ minimum (between electrodes) | ### 4. Comparison with F03-16 (High Sensitivity) Omron produces several versions of these bands. It is important to distinguish the F03-13 from its counterparts. | Feature | F03-13 (Standard) | F03-16 (High Sensitivity) | | :--- | :--- | :--- | | **Electrode Distance** | Wider spacing | Narrow spacing | | **Primary Use** | General water leakage | High-speed detection/small droplets | | **Environment** | Floor mounting | Ceilings or tight spaces | --- ### 5. Installation Wiring Example The F03-13 is typically connected to a terminal block using an **F03-14** (Terminal Block for sensing bands). ```text [ Controller (K7L) ] <------> [ F03-14 Terminal ] <------> [ F03-13 Sensing Band ] (DC/AC) (Connection) (Sensing Area) ```