Humboldt FD-4A Product Manual
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Humboldt FD-4A Product Manual

Force determination adapter and digital indicator
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product manual
07.09
H-1021
FORCE DETERMINATION
ADAPTER AND DIGITAL
INDICATOR

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Summary of Contents for Humboldt FD-4A

  • Page 1 product manual 07.09 H-1021 FORCE DETERMINATION ADAPTER AND DIGITAL INDICATOR...

  • Page 3: Standard Features

    • The FD-4A is compact in size. The narrow width allows two units to be operated simultaneously on one ductilometer stand. Its short length does not significantly reduce overall ductilometer travel.
  • Page 4 Apparatus FD-4A Adapter: The body of the FD-4A adapter is drilled on the bottom such that it can be placed directly on the pin of either the ductilometer stand or carriage. It is constructed of stainless steel for corrosion resistance and stability while it functions to protect the LVDT and keep it out of the water bath.

  • Page 5: Installation

    Carefully unpack the FD-4A apparatus. Save the box and packing materials in the event that the unit must be shipped in the future. The FD-4A adapter maybe placed on the calibration stand for hook at this time. Be sure to secure the test stand before hanging weights-refer to instructions under “calibration”.
  • Page 6 Use the “English” and “Metric” adjustment to set the display to the correct reading while the calibrating weight is acting on the FD-4A. It is best to do this with the heaviest test weight or highest anticipated load you will be using. Change the “English/ Metric”...

  • Page 7: Operation

    Operation Place the FD-4A adapter on the pin of the stationary ductilometer stand in place of the sample briquet. Use caution so as not to immerse the adapter beyond the marking. Since the stainless steel spring plates are sensitive to temperature changes, a shift on the digital readout maybe noticed when the adapter is immersed, especially if there is a large difference between the water bath temperature and the ambient temperature.

  • Page 8: Data Acquisition

    Permanent damage may result if brine comes in contact with it for any period of time. Note: While the FD-4A adapter is immersed in a cold bath, water from the air may condense on the upper portion of the body where the LVDT is located. High humidity and/or condensation will not adversely affect the transformer or core.

  • Page 9: Specifications

    Heat treat cond TH 1050 Transducer and Digital Readout Readout Model DTR-451 LVDT Model 100 HR Height: 2.1" Dia: 0.812" Width: 6.125" Length: 1.81" Length: 10.0" Weight 2.75 lbs. Input from FD-4A: 9-pin D-subminiature Output: 15-pin IC-subminiature 0.1 VDC/Ib. (analog)

  • Page 10: Maintenance

    Material: Stainless Min. breaking: 72 lbs. Maintenance No special maintenance is required for the FD-4A adapter other than routine cleaning of parts with appropriate cleaner. Careful handling is recommended to ensure best performance. Do not attempt disassembly or repairs. No special maintenance is required for the DTR-451 digital readout unit and 100-HR LVDT.

  • Page 12: Construction Materials

    Warranty Humboldt Mfg. Co. warrants its products to be free from defects in material or workmanship. The exclusive remedy for this warranty is Humboldt Mfg. Co., factory replacement of any part or parts of such product, for the warranty of this product please refer to Humboldt Mfg.

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