Parker Research Magnetic Weight Test Bar
The TB-10 magnetic weight lift test bar is 10 lbs; allowing for the accurate calibration and certification of inspection yokes. This follows paragraph 7.4.4. of the Standard Practice for Magnetic Particle Testing (ASTM-E1444)
Each bar is stamped with it's weight and is traceable to NIST.
|PART #||DESCRIPTION||WEIGHT||TYPE OF TEST USED FOR||SPECIFICATIONS|
|TB10||Ten pount weight left test bar||10 lb.||AC yoke test||
ASME SEC V, ARTICLE 7
MIL-STD-271E & F (SHIPS)
|TB10S-4||Ten pount weight left test bar | Set of 4||40 lb.||DC yoke test|
|TB10S-5||Ten pount weight left test bar | Set of 5||50 lb.||Permanent magnet test|
|TB10-SP||Ten pount weight left test bar with defects||10 lb.||AC yoke test|
Place the yoke les on the test bar at the recommended spacing (see below table). In the AC mode, energize the yoke and lift test bar (10 lb.). For the DC lift test (30 - 50 lb.) 3 to 5 bars must be bolted together through the hole located in the center of each bar. With the yoke set in the DC mode follow the same prodcedure as described above.
Yoke Leg Spacing and Weight Breakdown by Standard
Note: the below table is subject to change. So make sure the latests versions of these standards are being adhered to.
||ASME V, ART 7
|Weight & pole spacing||Weight||Space||Weight||Space||Weight||Space||Weight||Space||Weight||Space|
|AC Field||10 lb.||2-4 in.||10 lb.||*||10 lb.||2-4 in.||10 lb.||2-4 in.||10 lb.||3-6 in.|
DC Field or Permanent Magnet
|30 lb.||2-4 in.||40 lb.||*||30 lb.||2-4 in.||30 lb.||2-4 in.||40 lb.||3-6 in.|
|50 lb.||4-6 in.||50 lb.||4-6 in.||50 lb.||4-6 in.|
|Max Verification Interval||6 months||1 year||6 months||6 months||3 months|
Note: Pole spacing is measured from the center line of the pole legs
*Maximum pole spacing that will be used
All Parker Research contour brokes (yokes) comply with and exceed the requirements listed above.
TB10-SP Magnetic Weight Lift and Defect Test Bar
Not only does the TB10-SP Magnetic Weight Lift and Defect Test Bar provide for the verification of the 10 lb. AC weight lift calibration test, but it's also certified and traceable to NIST standards. In addition, the reverse side of the test bar contains artificial defects; allowing the user to demonstrate that indications are being found and verified.
Artifical Defect Summary