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Gauging and Control System for Blown Film NDC Model 5100TC The NDC Model 5100TC measurement and control system provides continuous measurement, display, and profiling of film thickness. The 5100TC includes a controller to automatically adjust nip roll speed, melt pump speed, or extruder screw speed to control thickness. Optional Automatic Profile Control (APC) available. |
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Descriptions The Model 5100TC is designed for continuous measurement and display of bubble profile. The system features rugged industrial design for mission critical applications requiring maximum "up time." NDC's utilization of touchscreen technology and advanced sensors make this the most comprehensive, easy to use and reliable system available. The model 5100TC features a high resolution color CRT with touchscreen control interface for ease of use and understanding unmatched by other systems. The operator can access all functions of the system via the touchscreen, i.e. target settings, recipes, alarms, reports, auto control setups and profile display selections. Displays and Reports The color CRT continuously displays
real-time thickness or weight-per-unit area while the operator selects from among different display screens. Depending upon the application, there are several reports and displays available for operators and management.
Typical Displays
In addition, there are several displays for viewing and setting system parameters, such as recipe constants, scanner variables, communication protocol and auto control tuning constants. Typical Reports
Any report or display can be printed out automatically (end of roll, end of shift, etc.) or upon demand. Theory of Operation The NDC Infrared gamma gauge
is based on the principle of Compton Photon Backscatter [commonly called Gamma Backscatter.] A small radioactive isotope in the sensing probe emits low-energy gamma rays [photons] which are collimated and beamed at the measured
material. These gamma rays are scattered back toward the detector in direct proportion to the thickness of the material in front of the probe. An efficient scintillation crystal/photomultiplier detector converts the backscattered
photons to an electrical signal which in turn can be related to weight-per-unit area or thickness [if material density is constant.
Technical Specifications and Options of the 5100TC |
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