This automatic optical fiber tensile testing system is designed for operator skill independent use in production and laboratory settings. Two basic model configurations permit the user to choose between a set up for standard linear proof testing and with additional mandrels for rotary high strength testing.
The linear version is designed for production proof testing with forces as much as 22 N. Motorized clamps with carefully designed rubber inserts be sure that the SZ stranding line is not really damaged within the testing process while simultaneously eliminating the need for an outside air supply. Amounts of pulling force, pulling speed and hold time are programmable and conveniently offered to the operator from the built-in LCD touchscreen display control. Data from tests can be saved and accessed through the USB port or Ethernet interface.
Mandrels of the same design as in NYFORS’ optical fiber recoaters could be mounted on the proof tester within the rotary high strength configuration. The fiber is wrapped around the two mandrels which support it using a special clamping mechanism. This way greater loads can be applied on the fiber, enabling breaking strength tests under controlled circumstances.
Adjustable clamp positioning facilitates testing with the highest force levels along with testing of short fiber lengths. The compact and lightweight weight design helps make the instrument easy to maneuver in a laboratory environment and also to integrate in a production work bench where space reaches reasonably limited. The machine is really a compact and lightweight instrument perfect for testing the effectiveness of optical fibers up to 30 N. The device is created to meet all sorts of applications when a strength test has to be performed.
The machine is designed using the user in mind. The optical fiber ribbon machine is readily positioned in the guided linear clamps, as well as the testing starts automatically using a “One Touch” go button. The built-in microprocessor controls all of the important parameters such as pulling force, pulling speed and hold time. This permits for any completely controlled test every time.
The machine may be linked to an outside PC, which enables access to all programmable parameters and settings. The device is adapted to stand-alone use or even to the integration into different subsystems. The equipment comes with an extensive capability of logging and saving information such as pulling force, pulling speed and fiber diameter and other parameters.
Two recoat injector configurations can be found. The PTR307 uses an automated pump to inject the recoat material. The volume of material dispensed through the automatic injector is controlled by hand via the top-mounted “Inject” button or programmed in to the machine utilizing the tablet controller. The PTR307B comes with a manual recoat injection system that requires the user to manually dispense the recoat material to the mold cavity; a substitute injector for your PTR307B recoater is available below. Please note uojthk the automatic injector is only compatible with high-index recoat material, whilst the manual injector is compatible with both low- and high- index recoat material; both are sold separately below. Please contact Tech Support for additional information.
he manual injector can 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 before use. To connect the PTRRRM to the recoater mold, tighten the connector at the conclusion of the green plastic tubing, then loosen by way of a 1/4 turn to permit 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 having an internal plunger acts 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 within the photo off to the right). Then, to inject the secondary coating line, point the lever horizontally (i.e., facing the knurled screw) and rotate the screw clockwise until near the end of the travel range is reached. Avoid bottoming out the dispenser as 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 within the system. Use lens tissue as well as an acetone or alcohol cleaning solution to collect any excess recoat material that flows through the mold.