The **WMS2-C2-R/K** is a specific variant within a series of industrial-grade components, typically associated with **pressure transmitters** or **switch modules** used in automation and fluid power systems. The alphanumeric code indicates specific electrical and mechanical configurations. Below is a breakdown of the electronic and technical characteristics. --- ### Technical Specification Overview | Feature | Specification Details | | :--- | :--- | | **Component Type** | Electronic Pressure Switch / Sensor Module | | **Output Type** | Relay Output (indicated by "R") | | **Connector Type** | M12 Circular Connector (indicated by "K") | | **Contact Rating** | Usually 250V AC / 30V DC (application dependent) | | **Protection Class** | IP65 or IP67 (Dust and Water resistant) | | **Operating Temp** | -20°C to +80°C | --- ### Key Electronic Components & Functionality #### 1. Signal Processing Unit The "C2" designation often refers to the internal electronics calibration or the specific pressure range capability. It contains a microprocessor or an ASIC (Application-Specific Integrated Circuit) that converts the mechanical movement of a diaphragm or a piezo-resistive element into a digital signal. #### 2. Switching Logic (The "R" Suffix) The **R** typically denotes a **Relay Output**. * Unlike solid-state outputs (PNP/NPN), a relay provides potential-free (dry) contacts. * This allows the part to switch higher voltages or different circuits that are electrically isolated from the sensor's power supply. #### 3. Connection Interface (The "K" Suffix) The **K** refers to the electrical connection style, usually a **Plug-in Connector**. * **M12 4-pin or 5-pin:** This is the industry standard for sensors. * **Wiring Pins:** * Pin 1: L+ (Power) * Pin 2: NC (Normally Closed Contact) * Pin 3: L- (Ground) * Pin 4: NO (Normally Open Contact) #### 4. Diagnostic Indicators Most WMS2 modules include integrated **LEDs** within the transparent or semi-transparent housing: * **Green LED:** Indicates the device has power. * **Yellow/Amber LED:** Indicates the switching state (Output active). --- ### Application in Systems This part is commonly used as a safety or control interface. When the measured medium (air, oil, or water) reaches a specific set point, the internal electronic circuit triggers the relay to: 1. Shut down a pump. 2. Trigger an alarm. 3. Signal a PLC (Programmable Logic Controller) input. ---