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Calibration Stand

Height: 1.75"

Cable Wheel:

Width: 2.94"

Dia: 1.75"

Length: 11.50"

Cable groove width: 0.063"
Cable groove depth 0.063"

Weight 2.2 lbs.

Material: Aluminum

Material: Phenolic

Mounting holes will accept 1/4 dia. flat 
head screws

Level vial accuracy:  

35 arc minutes 

Weight Holder

Base diameter:  2.80"

Platform block:

Base height: 0.438"

Height: l0mm

Material: Nickel plated steel

Width: 18mm
Length: 1.25"

Rod diameter: 0.250"

Pin hole diameter: 0.257"

Length 9.5"

Material: Brass

Material: Stainless steel

Cable diameter: 0.031"

Holder weight (w/o cable & block):

Length: 11"

1.00 lb.

Construction: 7x19  
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.
Maintenance on the calibration stand is limited to cleaning off foreign material that 
may accumulate and checking the pulley bearing for free rotation. The bearing may be 
cleaned and oiled with a light weight lubricant if necessary--avoid heavy greases which 
increase friction. Bearing replacement may be required if water enters and damages it. 
Check the level on the stand from time to time and make adjustments if necessary. Be 
certain that the screws or clamp which secure the stand are tight. 
No special maintenance is required for the weight holder assembly other than periodic 
inspection of the cable for wear or damage. Replace cable if necessary.

Summary of Contents for FD-4A

Page 1: ...product manual 07 09 H 1021 FORCE DETERMINATION ADAPTER AND DIGITAL INDICATOR ...

Page 2: ......

Page 3: ...ctronic components are safely located out of the water bath The digital transducer readout unit incorporates an analog output for connection to a strip chart recorder or data acquisition unit Once started tests can be monitored unattended so technicians are free for other work The stainless steel construction eliminates rust and corrosion Each FD 4 unit is serially numbered and individually calibr...

Page 4: ...is a self contained power line operated high stability LVDT signal conditioner with a 4 digit readout It supplies a high frequency AC voltage for the LVDT and a 0 to 3 0 VDC analog output for data acquisition interfacing A switch on the front panel can change the display from pre scaled English units to pre scaled metric units Calibration Stand This one piece phenolic block has a ledge and stainle...

Page 5: ...gital converter computer or other readout device may be used One tenth of one volt output is equal to one pound of force on the adapter Additional information regarding the 15 pin connector and the optional BCD interface if required is available Calibration Set up The FD 4A apparatus is factory calibrated before shipment and is ready to use It is recommended however that the zero adjustment be che...

Page 6: ...ish Metric adjustment do not change analog output voltage Likewise the select switch changes only the display and does not alter the analog output voltage proportionally for the metric scale Add and subtract weights and make adjustments until the readings are within tolerance The output device or data acquisition equipment should also be checked to verify that the analog output voltage corresponds...

Page 7: ...If necessary use the zero adjustment to set the readout and analog output to null Your weight calibrations will remain intact It will be necessary to determine a new starting position for the carriage of the ductilometer This position can be easily found by using the sample and moving the carriage until the specimen slides freely over both the FD 4A platform pin and the pin on the ductilometer Not...

Page 8: ...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 Securing the calibration stand to a workbench or table is required The lightweight p...

Page 9: ...steel types 302 303 304 17 7 PH Max submersion depth 2 125 Max tensile stress measurement Cable to DTR unit 30 lbs Length 72 Spring plates Thickness I3GA 0 091 Material 17 7 PH 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 ...

Page 10: ... 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 Maintenance on the calibration stand is limited to cleaning off foreign material that may accumulate and checking the pulley bearing for free rotation The bea...

Page 11: ......

Page 12: ...r parts of such product for the warranty of this product please refer to Humboldt Mfg Co catalog on Terms and Conditions of Sale The purchaser is responsible for the transportation charges Humboldt Mfg Co shall not be responsible under this warranty if the goods have been improperly maintained installed operated or the goods have been altered or modified so as to adversely affect the operation use...

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