This automatic optical fiber tensile testing system is designed for operator skill independent use in production and laboratory settings. Two basic model configurations allow the user to pick between a setup for standard linear proof testing and with additional mandrels for rotary high strength testing.
The linear version is ideal for production proof testing with forces as much as 22 N. Motorized clamps with carefully designed rubber inserts ensure that the optical fiber proof-testing machine will not be damaged in the testing process while at the same time eliminating the requirement for another air supply. Degrees of pulling force, pulling speed and hold time are programmable and conveniently accessible to the operator from the built-in LCD touchscreen display control. Data from tests may be saved and accessed via the USB port or Ethernet interface.
Mandrels of the identical design as in NYFORS’ optical fiber recoaters could be mounted on the proof tester within the rotary high strength configuration. The fiber is wrapped across the two mandrels which support it with a special clamping mechanism. By doing this greater loads does apply onto the fiber, enabling breaking strength tests under controlled circumstances.
Adjustable clamp positioning facilitates testing with the highest force levels as well as testing of short fiber lengths. The compact and lightweight weight design definitely makes the instrument easy to move around in a laboratory environment as well as integrate in a production work bench where space are at reasonably limited. The equipment is really a compact and light-weight instrument ideal for testing the effectiveness 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 equipment is designed with all the user in mind. The FTTH cable production line is readily put into the guided linear clamps, and also the testing starts automatically with 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 allows to get a completely controlled test each time.
The device may be attached to another PC, which enables usage of all programmable parameters and settings. The equipment is adapted to stand-alone use or to the integration into different subsystems. The equipment comes with an extensive capacity for 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 quantity of material dispensed through the automatic injector is controlled by hand through the top-mounted “Inject” button or programmed to the machine using the tablet controller. The PTR307B includes a manual recoat injection system that requires the user to manually dispense the recoat material to the mold cavity; a replacement injector for the PTR307B recoater is accessible below. Please note uojthk the automatic injector is only appropriate for high-index recoat material, while the manual injector works with both low- and high- index recoat material; they are both sold separately below. Please contact Tech Support to learn more.
he manual injector may be mounted to compatible fiber recoaters using the 4-40 screws on the recoater housing (see photo to the right). Use a 3/32″ hex answer to secure the injector prior to use. For connecting the PTRRRM for the recoater mold, tighten the connector at the conclusion of the green plastic tubing, then loosen by way of a 1/4 consider permit rotation.
The injector is equipped with a distribution valve and two-position selection lever for directing the flow of recoat material. A knurled dispensing screw with an internal plunger acts as a syringe for your 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 Fiber drawing machine, point the lever horizontally (i.e., facing the knurled screw) and rotate the screw clockwise until close to the end from the travel range is reached. Avoid bottoming the dispenser since this may damage the interior plunger; also be careful when re-engaging the threads in order to avoid cross threading the dispensing screw. Several fill/inject steps may be required until air is displaced within the system. Use lens tissue and an acetone or alcohol cleaning answer to collect any excess recoat material that flows through the mold.