This automatic optical fiber tensile testing system is ideal for operator skill independent use in production and laboratory settings. Two basic model configurations enable the user to pick between a set up for standard linear proof testing along with additional mandrels for rotary high strength testing.
The linear version is made for production proof testing with forces approximately 22 N. Motorized clamps with carefully designed rubber inserts ensure that the Fiber drawing machine is not really damaged in the testing process while at the same time eliminating the need for an outside air supply. Degrees of pulling force, pulling speed and hold time are programmable and conveniently accessible to the operator with the built-in LCD touch-screen control. Data from tests can be saved and accessed through the USB port or Ethernet interface.
Mandrels of the same design like NYFORS’ optical fiber recoaters may be easily mounted on the proof tester in the rotary high strength configuration. The fiber is wrapped across the two mandrels which support it using a special clamping mechanism. This way greater loads can be applied to the fiber, enabling breaking strength tests under controlled circumstances.
Adjustable clamp positioning facilitates testing using the highest force levels in addition to testing of short fiber lengths. The compact and light weight design makes the instrument easy to maneuver in a laboratory environment as well as integrate in a production work bench where space are at reasonably limited. The machine is really a compact and light-weight instrument perfect for testing the potency of optical fibers as much as 30 N. The equipment is designed to meet all types of applications where a strength test needs to be performed.
The machine is made with all the user in mind. The SZ stranding line is easily placed in the guided linear clamps, and the testing starts automatically using a “One Touch” go button. The built-in microprocessor controls each of the important parameters such as pulling force, pulling speed and hold time. This permits for any completely controlled test each and every time.
The equipment may be attached to another PC, which enables use of all programmable parameters and settings. The machine is adapted to face-alone use or to the integration into different subsystems. The equipment has an extensive capability of logging and saving information like pulling force, pulling speed and fiber diameter and other parameters.
Two recoat injector configurations can be purchased. The PTR307 uses an automated pump to inject the recoat material. The quantity of material dispensed from the automatic injector is controlled yourself via the top-mounted “Inject” button or programmed into the machine making use of the tablet controller. The PTR307B features a manual recoat injection system that requires the consumer to manually dispense the recoat material into the mold cavity; a substitute injector for that PTR307B recoater is available below. Please note uojthk the automatic injector is only compatible with high-index recoat material, while the manual injector works with both low- and- index recoat material; they are both sold separately below. Please contact Tech Support for additional information.
he manual injector could be mounted to compatible fiber recoaters using the 4-40 screws on the recoater housing (see photo to the correct). Utilize a 3/32″ hex factor to secure the injector just before use. To connect the PTRRRM for the recoater mold, tighten the connector at the end of the green plastic tubing, then loosen with a 1/4 turn to allow for rotation.
The injector is equipped with a distribution valve and 2-position selection lever for directing the flow of recoat material. A knurled dispensing screw with the internal plunger works as a syringe for that recoat material. To fill the syringe, point the lever downward (i.e., toward the recoat bottle), then rotate the knurled dispensing screw counterclockwise until it spins freely to fill the syringe (shown inside the photo off to the right). Then, to inject the SZ stranding line, point the lever horizontally (i.e., facing the knurled screw) and rotate the screw clockwise until near the end in the travel range is reached. Avoid bottoming out the dispenser because this may damage the internal plunger; also take care when re-engaging the threads to prevent cross threading the dispensing screw. Several fill/inject steps may be required until air is displaced inside the system. Use lens tissue as well as an acetone or alcohol cleaning solution to collect any excess recoat material that flows from the mold.