Profile: Hardy Instruments, Inc. is a designer and manufacturer of process weighing, tension control and vibration monitoring equipment. We are an ISO 9001 certified company. Our product line includes process weighing systems, vibration monitoring and tension control products. Our brands include WAVERSAVER™, C2™, ADVANTAGE™, IT (Integrated Technician)™ and COCKPIT™. Our 1769-WS is a single channel PLC-style weigh scale module for use with the Allen-Bradley MicroLogix® 1500 and CompactLogix® controllers. The HI 1769-WS reads and conditions weight and diagnostic data from strain gauge load sensors or load cells, and communicates this data over the I/O chassis backplane to the MicroLogix® 1500 or CompactLogix® processor. The HI 1769-WS module reduces installation costs, as it needs no external stand-alone scale instrument with a wired communications link to the PLC. Our tension controller incorporates an automatic closed loop process to provide precision control over the tension in the web or strand. The controller incorporates either a single or dual sensor input to allow for tension measurements on either web rolls, or strand pulleys. The controller utilizes a PID algorithm to control tension in unwind, rewind or intermediate zones. The standard output from the tension controller is 0-10V / 4-20 ma, which can be directed to a brake or a drive. Hardy also provides pneumatic systems to convert the analog output to a pneumatic signal for air- brake operation.