The Endress Hauser 91WA1-AA3D20AKB4AA is an ultrasonic flow controller designed for precise, non-intrusive measurement. This clamp-on device attaches externally to pipes, allowing for flow monitoring without direct contact with the fluid, which helps minimize maintenance and wear. It includes a 90-foot cable and supports both 4-20 mA HART communication and pulse output signals, providing versatile integration options for control systems. Additionally, the flow controller features a 1/2 inch NPT thread for cable entry, ensuring secure and reliable connections. This product is available through BSP Automation, offering a dependable solution for flow measurement needs in various industrial applications.