Vytran® Fiber Recoaters with Proof Testers

• Automatic Fiber Recoater with Linear Proof Tester
• Proof Testing up to 20 N (4.5 lbs)
• Available Standard for Ø430 µm Coatings
• Recoats Fibers up to 50 mm in Length
• Compatible with High-Index Recoat Material
• Ideal for Medium- and High-Volume Manufacturing
• Program Process Parameters via Included Handset Controller

Thorlabs’ PTR308 Fiber Recoater features an automatic mold assembly and an integrated linear proof tester. The pneumatic mold assembly controls the mold plates allowing the recoat material to be directly injected into the mold cavity. This prevents the injection of excess recoat material, which would require cleaning after every recoat process. Additionally, once the fiber is secured in the fiber holding blocks, the entire recoat process is performed automatically. 

The PTR308 includes a tablet controller that allows the user to program and control the unit. Adjustable settings include the inject rate, inject amount, cure time, lamp power, and proof test level; this enables the programming of custom recipes. An injection calculator provides an estimate of recoat parameters that can be refined by the user. The tablet is shipped preloaded with files for common recoat and proof test parameters, but can store a virtually unlimited number of files; please see the Controller tab for details.

The integrated linear proof tester takes the fiber up to a predetermined load (≤20 N) and then releases it. The testing process is programmable, allowing the user to select parameters such as the load, the rate at which the load is applied, and the hold time. To ensure the long-term reliability of the fiber, the proof test level should be about three times higher than the applied service load for the spliced fiber.

The PTR308 is designed for fiber coatings of Ø430 µm and requires the purchase of fiber block inserts (sold below).  Choose the inserts that match the coating diameter of the fiber being used. Nylon-tipped setscrews are used to secure the inserts in the fiber holding blocks; replacement 2-56, 1/8" long SS2SN013 setscrews are available in packs of 10. The PTR308 is compatible with high-index recoat material only (sold below). The pneumatic design of the mold assembly requires an external 80 - 120 psi compressed air source (not available from Thorlabs). Customized mold sizes for recoat diameters up to 900 µm are available; please contact Tech Support for more information.

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The PTR306B Manual Fiber Recoater shown with the included Handset Controller.

• Fiber Recoaters with Manual Mold Assembly and Linear Proof Tester
• Proof Testing up to 20 N (4.5 lbs)
• Compatible with Mold Assemblies with Coating Diameters of 280 µm, 430 µm, or
  600 µm
• Recoats Fibers up to 50 mm in Length
• Automatic and Manual Recoat Injector Configurations Available
• Ideal for Low-Volume Manufacturing and R&D
• Program Process Parameters via Included Handset Controller

The PTR306 and PTR306B combine a fiber recoater and linear proof tester into a single unit. These recoaters use a hinged mold assembly (sold separately below) to form the mold cavity for recoating; recoat material is injected through a cross-channel in the mold’s top plate. The integrated linear proof tester can pull the recoated fiber up to a predetermined load (≤20 N) and uses the same fiber holding blocks as the recoater; therefore, both recoating and testing processes can be performed without moving the fiber. 

The PTR306 and PTR306B include a controller that allows the user to program and control the unit. Adjustable settings include the inject rate, inject amount, cure time, lamp power, and proof test level; this enables the programming of custom recipes. An injection calculator provides an estimate of recoat parameters that can be refined by the user. The tablet is shipped preloaded with files for common recoat and proof test parameters, but can store a virtually unlimited number of files; please see the Controller tab for details.

Recoat Injector Configurations
Two recoat injector configurations are available. The PTR306 uses an automated pump to inject the recoat material. The amount of material dispensed by the automatic injector is controlled by hand via the top-mounted "Inject" button or programmed into the machine using the controller. The PTR306B features a manual recoat injection system that requires the user to manually dispense the recoat material into the mold cavity; a replacement injector for the PTR306B recoater is available below. Please note that the automatic injector is only compatible with high-index recoat material, while the manual injector is compatible with both low- and high- index recoat material; both are sold separately below. Please contact Tech Support for more information.

Selecting a Mold Assembly or Fiber Holder Inserts
When selecting one of these recoaters, both a mold assembly and inserts for the fiber holding blocks (two top and two bottom, sold below) must be chosen.  The mold assemblies are available for coating diameters of 280 µm, 430 µm, and 600 µm. Customized recoat diameters up to 900 µm are also available; please contact Tech Support for more information. The type of insert is dependent upon the type of integrated proof tester. The PTR306 and PTR306B are compatible with the VHJ series inserts. Nylon-tipped setscrews are used to secure the inserts in the fiber holding blocks; replacement 2-56, 1/8" long SS2SN013 setscrews are available in packs of 10.

Older models of the legacy PTR206B sold before 2015 (and later replaced by the PTR306B) used two different types of UV lamps (high or low power) for curing the recoat material, depending on whether low- or high-index material was being used. All current models use the high-power UV lamp (Item # UVRB, available below), which can be programmed for high- or low-powered output. For help with replacing the older, low-power lamp or to order systems that still use this lamp, please contact Tech Support.

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PTR307B Recoater with Manual Injector

• Fiber Recoaters with Manual Mold Assembly and Rotary Proof Tester
• Proof and Tension Testing up to 89 N (20 lbs)
• Compatible with Mold Assemblies with Coating Diameters of 280 µm, 430 µm, or
  600 µm
• Recoats Fibers up to 50 mm in Length
• Automatic and Manual Recoat Injector Configurations Available
• Ideal for Low-Volume Manufacturing and R&D
• Program Process Parameters via Included Handset Controller

The PTR307 and PTR307B combine a fiber recoater and rotary proof tester into a single unit. These recoaters use a hinged mold assembly (sold separately below) to form the mold cavity for recoating; recoat material is injected through a cross-channel in the mold’s top plate. The integrated rotary proof tester can perform both proof and tension tests (≤89 N). Tension testing takes the fiber up to its breaking point, and the peak tension is recorded in units of tension (pounds, kilograms, or Newtons) or in units of stress (kpsi or GPa).

The PTR307 and PTR307B include a tablet controller that allows the user to program and control the unit. Adjustable settings include the inject rate, inject amount, cure time, lamp power, and proof test level; this enables the programming of custom recipes. An injection calculator provides an estimate of recoat parameters that can be refined by the user. The tablet is shipped preloaded with files for common recoat and proof test parameters, but can store a virtually unlimited number of files; please see the Controller tab for details.

Recoat Injector Configurations
Two recoat injector configurations are available. The PTR307 uses an automated pump to inject the recoat material. The amount of material dispensed by the automatic injector is controlled by hand via the top-mounted "Inject" button or programmed into the machine using the tablet controller. The PTR307B features a manual recoat injection system that requires the user to manually dispense the recoat material into the mold cavity; a replacement injector for the PTR307B recoater is available below. Please note that the automatic injector is only compatible with high-index recoat material, while the manual injector is compatible with both low- and high- index recoat material; both are sold separately below. Please contact Tech Support for more information.

Selecting a Mold Assembly or Fiber Holder Inserts
When selecting one of these recoaters, both a mold assembly and inserts for the fiber holding blocks (two top and two bottom, sold below) must be chosen. The mold assemblies are available for coating diameters of 280 µm, 430 µm, and 600 µm. Customized recoat diameters up to 900 µm are also available; please contact Tech Support for more information. The type of insert is dependent upon the type of integrated proof tester. These units are compatible with the VHH series inserts. Nylon-tipped setscrews are used to secure the inserts in the fiber holding blocks; replacement 2-56, 1/8" long SS2SN013 setscrews are available in packs of 10.

• Compatible with Manual Fiber Recoaters
• Three Available Mold Coating Sizes: Ø280 µm, Ø430 µm, and Ø600 µm
• Recoats Fibers up to 50 mm in Length
• Comes Installed from Factory when Purchased with Manual Recoater

The Mold Assemblies are composed of split quartz mold plates which, when closed, form the cylindrical mold cavity around the exposed section of the fiber being recoated. They are available for Ø280 µm, Ø430 µm, or Ø600 µm fiber coatings. Custom mold sizes up to Ø900 µm are available; please contact Tech Support for more information. These mold assemblies feature a lever to assist with opening and closing the mold.

Recoat material (sold below) is injected into the mold assembly by either an automatic or manual injection system. Then, UV light cures the recoat material. Cure times are dependent on the mold size and recoat material, but they range from approximately 12 - 15 seconds for the RM280A mold assembly with high-index AB950200 recoat material to 30 - 60 seconds with the low-index PC373 recoat material. The recoater mold assembly should be cleaned throughly with isopropyl alcohol or acetone between each recoating process; reliable and repeatable performance is highly dependent on the cleanliness of the mold.

When purchasing a manual fiber recoater for the first time, it is necessary to choose a mold assembly that is appropriate for the desired fiber coating diameter. Additional mold assemblies may also be purchased and swapped out by the user. The assembly simply screws to the top of the device, making the removal and install simple and easy. Because of this, our manual recoaters are adaptable and flexible in the field and can be modified to accept varying diameters of fiber quickly. It is also necessary to order the proper inserts (sold below) that best match the fiber diameter being used, whether purchasing a fiber recoater for the first time or updating a current recoater for a different fiber diameter.

Please note that these mold assemblies are only for the manual recoaters (Item #s PTR306, PTR306B, PTR307, and PTR307B); the automatic recoater (Item # PTR308) is sold with its own assembly already installed.

• Fiber Block Inserts for Thorlabs' Fiber Recoaters
• Two Types:
  • VHJ Series for Recoaters with Linear Proof Testers
  • VHH Series for Recoaters with Rotary Proof Testers
• Choose Two Top Inserts and Two Bottom Inserts
• Replacement Strips for Select VHJ Series Inserts Available Below

For all the recoaters sold above, the proper set of inserts need to be selected. A total of four inserts (two top and two bottom) are required for a full unit. The inserts are seated in and secured to the fiber holding blocks. They can easily be swapped out for different sizes, allowing our recoaters to adapt quickly should different fiber coating sizes be desired.

We offer two types of inserts to meet the needs of the two styles of integrated proof testers featured in the recoaters sold on this page. The VHJ Series inserts are designed for recoaters with linear proof testers (Item #s PTR308, PTR306, and PTR306B). They are compatible with fiber coating sizes ranging from Ø80 µm to Ø1000 µm. The VHH Series inserts are designed for recoaters with a rotary proof tester (Item #s PTR307 and PTR307B) and offer a compatibility range from Ø90 µm to Ø990 µm.

Custom sizes are available; please contact Tech Support for additional information.

• AB950200: High-Index Recoat Material
• PC373: Low-Index Recoat Material

Thorlabs offers UV-curable acrylate recoat materials to be used in our PTR series fiber recoaters. We offer both high-index (Item # AB950200) and low-index (Item # PC373) material in 1 oz bottles. The high-index material can be used in all recoaters (except the PRL201), whereas the low-index material can only be used in recoaters with the manual injection pump option.

• Replacement UV Bulbs for Manual Recoaters Listed to the Right
• 10 W Tungsten-Halogen Lamp
• Replacements Sold Individually
  • Four Bulbs Used in 50 mm Length Recoaters
  • Eight Bulbs Used in 100 mm Length Recoaters

The UVRB is a replacement bulb for the Vytran fiber recoaters listed to the right. Recoaters with a 50 mm recoat length are shipped with the four bulbs required for operation and recoaters with a 100 mm recoat length are shipped with eight bulbs.

Based on a schedule of 2000 recoats per month with 15 seconds per recoat, we recommend replacing the bulbs monthly. Instructions for bulb replacement are provided in the manual for each recoater or workstation (available from our website by clicking the red Docs icon next to each base unit item #).

Please note that any fingerprints on the surface of the bulb will shorten the bulb's life; avoid handling the glass envelope of the bulb. If the envelope is touched, clean with a soft lens tissue wetted with acetone or alcohol.

System Compatibilitya
Recoater Item #	Replacement Parts
	PTRRRM Manual Injector	RRMTA Injection Tube	RRMS Syringe Barrel
PTR303B
PTR304B	-	-
PTR306B
PTR307B
PTR403B

• These replacement parts are also compatible with the discontinued PTR203B, PTR206B, and PTR207B recoaters.

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The PTRRRM is mounted to a recoater via two 4-40 mounting screws. 

• Replacement Manual Injector for Dispensing Recoat Material into the Mold
  • For Vytran Fiber Recoaters with Manual Injectors that Use 50 mm Manual Mold Assemblies (See List to the Right)
  • Accepts PC373 and AB950200 Recoat Materials
• Replacement Injection Tube for Recoaters with Manual Injectors that Use 50 mm Manual Mold Assemblies
• Replacement Syringe Barrel for Manual Injectors

The PTRRRM Manual Injector and RRMTA Injection Tube are available as replacement parts for Thorlabs' Vytran Fiber Recoaters with Manual Injectors that use 50 mm manual mold assemblies; compatible systems are listed to the right. We also offer a replacement syringe barrel that is compatible with all of our Vytran fiber recoaters with manual injection systems.

The injector can be mounted to compatible fiber recoaters via two 4-40, 3/32" hex screws on the recoater housing (see photo to the right). To connect the PTRRRM to the recoater mold, tighten the connector at the end of the green plastic tubing, then loosen by a 1/4 turn to allow for 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 the 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 in the photo to the right). Then, to inject the recoat material into the mold, 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 avoid cross threading the dispensing screw. Several fill/inject steps may be needed until air is displaced within the system. Use lens tissue and an acetone or alcohol cleaning solution to collect any excess recoat material that flows from the mold.

The RRMTA injection tube and RRMS syringe barrel are available as replacement parts for the PTRRRM manual injector. The injection tube should be changed out if the knurl fitting breaks off the end, it leaks recoat material, or a clog forms that cannot be cleared with acetone. If the syringe no longer injects or an excessive number of air bubbles are visible in the recoat material (even after flushing the system), the syringe barrel should be replaced. A 5/16" thin spanner wrench is required for securing the syringe onto the recoat injector. Detailed installation instructions are provided in the support documentation, which can be found by clicking on the red documents icon () next to each item number.

• Replacement Injection Tube for Dispensing Recoat Material into the Mold
• Compatible with Vytran Fiber Recoaters with Manual Mold Assemblies that Use Automatic Injectors (See List to the Right)
• For Use with AB950200 and PC373 Recoat Materials

This replacement injection tube is compatible with Thorlabs' Vytran Fiber Recoaters that use Manual Mold Assemblies and Automatic Injection Systems (Item #s listed to the right). Though each system comes with an injection tube installed, it may need to be replaced if the knurled fitting breaks off the end, it leaks recoat material, or a clog forms that cannot be cleared with acetone.

Detailed installation instructions for the RRATA injection tube are provided in the support documentation, which can be found by clicking on the red documents icon () next to the item number.

The PG200 Proof Test Grips are designed as replacements for the Vytran rotary proof testers listed to the right. Each system is sold with a set of these grips installed.

Proof test grips may need to be replaced when the fiber slips at high tension levels. After the proof test grips are replaced the system will need to be calibrated; please contact Tech Support for details. Instructions for replacing the proof test grips are provided in each system's manual.

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VHJR Rubber Strip shown partially inserted into the metal channel of a VHJT Fiber Holding Block Insert. 

• Replacement Rubber Strip for VHJT, VHJ250, and VHJ500 Fiber Holding Block Inserts
• 2" Length (Trim to Size)
• Available in a Pack of 12

This 12 Pack of Replacement Rubber Strips is directly compatible with our VHJT, VHJ250, and VHJ500 fiber holding block inserts. Although one rubber strip comes preinstalled in each insert, these can wear out over time and should be replaced when the holding block insert no longer withstands the applied proof test tension.  

The rubber strip features a raised profile, and care must be taken during installation to ensure this profile sits above the metal channel of the insert. Detailed installation instructions are provided in the VHJR support documentation, which can be found by clicking on the red documents icon () next to the item number.

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Screenshot of VYT300C Controller When Used with PTR303B Manual Mold Fiber Recoater

• Alternative to Tablet Controller
• Provides Full Functionality for Compatible Systems (See Compatible Systems List to the Right)
• Intuitive GUI
• Capacitive Touchscreen
• Smaller Footprint than Tablet Controller

This handset controller is available as an alternative to the tablet controller included with our Vytran Large Diameter Fiber Cleavers, PTR Series Fiber Recoaters, and PTR Series Fiber Proof Testers. One handset controller is included with each PTR403 and PTR403B recoater, as well as the LDC450B portable fiber cleaver. A single handset controller can be used with multiple systems; after configuring parameters for one fiber processing unit, the controller can be disconnected and then connected to a different unit, of the same or a different type, to configure its parameters. 

The handset controller must be connected via the included cable in order to use it. The controller automatically turns on when the connected system is turned on. Upon startup, the handset controller will always read parameters from the connected system; i.e., the parameters that appear on the screen will always be the parameters that have been uploaded to the connected unit. If the parameters read from the unit match the parameters of the most recently opened file on the handset controller, the screen will display the file name.

The suite of tools available through the handset controller includes a record of the total cure time of the machine (under Process Counters) that is not shown on the tablet controller. This value may be reset each time the bulbs are replaced.

The handset controller can open, save, delete, export, and import files containing parameters for compatible systems. Exporting or importing a file will require a memory device to be connected to the Program Port of the handset controller.

Instructions for using this controller can be found in the manuals for the compatible Vytran systems.