Based on common industrial automation and electronic component naming conventions (specifically those used by manufacturers like **SMC**), the **K-A46-R** typically refers to a pressure gauge component used in pneumatic and fluid systems. Below is a detailed breakdown of its electronic and mechanical specifications. ### 1. Component Overview The K-A46-R is a circular, back-side entry pressure gauge. While it is primarily a mechanical instrument, it serves as a critical sensing interface for electronic pressure control systems. | Specification | Details | | :--- | :--- | | **Component Type** | Pressure Gauge (Analog) | | **Mounting Style** | Back Side Threaded Connection | | **Housing Diameter** | 42mm (approx.) | | **Fluid Media** | Air, Inert Gas, or Non-corrosive fluids | | **Connection Thread** | R 1/8 or R 1/4 (Depending on sub-variant) | --- ### 2. Technical Characteristics In an electronic control loop (such as a PLC-driven pneumatic system), this part provides the physical monitoring necessary to calibrate electronic pressure switches. * **Pressure Range:** Usually calibrated for 0 to 1.0 MPa (Standard) or 0 to 0.4 MPa (Low pressure). * **Accuracy:** ±3% Full Scale (F.S.). * **Material:** * **Case:** Stainless steel or heavy-duty resin. * **Clear Cover:** Polycarbonate (High impact resistance). * **Red Pointer (R-Suffix):** The "R" in the part number often signifies a **Red Indicator** or a specific range limit marker used for visual set-point identification. --- ### 3. Integration in Electronic Systems Although the gauge itself is analog, it is often paired with electronic components in an assembly: 1. **Pressure Switches:** Used alongside electronic sensors (like the ISE30A series) to provide a manual backup reading if the digital display fails. 2. **F.R.L. Units:** Part of a Filter-Regulator-Lubricator stack that uses electronic solenoid valves for automation. 3. **Feedback Loops:** Technicians use the K-A46-R to verify that the **4-20mA or 0-10V signal** coming from an electronic transducer matches the physical pressure in the line. --- ### 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **K** | Accessory/Spare Part Designation | | **A46** | Series Model (Standard Pressure Gauge) | | **R** | Specific Variation (Red zone, Red pointer, or specific threading) |