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DeFelsko PosiTest

 

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Ordering Information: PosiTest FM/F/GM/G - Please indicate what SCALE DIAL you will require in the comments field on the order.

MAGNETIC PULL OFF thickness gage for the Non-destructive measurement of non-magnetic coatings (paint, enamel, plastic, galvanizing, metalizing, plating, etc.) on STEEL.

ACCURACY

  • Highly wear resistant Carbide Probe for longest life and continuous accuracy
  • Modern and up-to-date gauge Scale Ranges fit all applications
  • Conforms to national and international standards including ISO and ASTM.

DURABILITY

  • Extra rugged gauge housing, not affected by mechanical shock, water, acid or solvents
  • Unique overall gage design, fully supported, positive positioning, no pivoting tendencies during measurement
  • Gage can be used fully supported or with only the front probe area contacting the surface
  • Functions on a permanent rare-earth cobalt magnet, no battery
  • Explosion Proof - Refinery safe
  • 2 year warranty

EASY TO USE

  • Positive visual and audible indicators to designate when thickness reading is established
  • "V" grooves in probe housing and Gauge base allow correct positioning on cylindrical objects
  • Compact, lightweight, precisely balanced, Independent of gravity - Gauge can be used in any position
  • GO / NO-GO button can be pre-set for rapid measurement
  • Probe contact and dial rotation all in a one-finger operation
  • Gauge is furnished with wrist strap and instructions in a high quality leather case with belt loops for your convenience
PosiTester FM / F / GM / G
FM PosiTest Instrument with FM Scale
F PosiTest Instrument with F Scale
GM PosiTest Instrument with GM Scale
G PosiTest Instrument with G Scale

 

Available PosiTest models

For: Hot dip galvanizing, hard chrome metalizing, paint, enamel, plastic coatings on steel.
PosiTest FM - Ideal for measuring coating thickness of hot dip galvanizing, hard chrome metalizing, paint, enamel, plastic coatings on steel. (mils)
Scale FM 0-80 mils
Tolerance: ±0.2 mils up to 4 mils
±5% of the reading over 4 mils
For: Electroplating, thin paint films, phosphating on steel.
PosiTest GM - Ideal for measuring coating thickness of electroplating, thin paint films, phosphating on steel. (mils)
Scale GM 0-8 mils
Tolerance: ±0.04 mils up to 0.8 mils
±5% of the reading over 0.8 mils
PosiTest F - Ideal for measuring coating thickness of hot dip galvanizing, hard chrome metalizing, paint, enamel, plastic coatings on steel. (microns)
Scale F 0-2000 µm
Tolerance: ±5 µm up to 100 µm
±5% of the reading over 100 µm
PosiTest G - Ideal for measuring coating thickness of electroplating, thin paint films, phosphating on steel. (microns)
Scale G 0-200 µm
Tolerance: ±1 µm up to 20 µm
±5% of the reading over 20 µm

 

Magnetic Pull-Off

Magnetic pull-off gages use a permanent magnet, a calibrated spring, and a graduated scale. The attraction between the magnet and magnetic steel pulls the two together. As the coating thickness separating the two increases, it becomes easier to pull the magnet away. Coating thickness is determined by measuring this pull-off force. Thinner coatings will have stronger magnetic attraction while thicker films will have comparatively less magnetic attraction. Testing with magnetic gages is sensitive to surface roughness, curvature, substrate thickness, and the make up of the metal alloy.

Magnetic pull-off gages are rugged, simple, inexpensive, portable, and usually do not require any calibration adjustment. They are a good, low-cost alternative in situations where quality goals require only a few readings during production.

Rollback dial models (PosiTest shown in Fig 2) are the most common form of magnetic pull-off gage. A magnet is attached to one end of a pivoting balanced arm and connected to a calibrated hairspring. By rotating the dial with a finger, the spring increases the force on the magnet and pulls it from the surface. These gages are easy to use and have a balanced arm that allows them to work in any position, independent of gravity. They are safe in explosive environments and are commonly used by painting contractors and small powder coating operations. Typical tolerance is ±5%.

Coating Thickness Measurement

Fig. 2. Roll-back dial magnetic pull-off thickness gauge.

Do not send ANY repairs to Southern Tool (Smith Hamilton) - See Below

Our Service department's goal is to evaluate your instrument and contact you within one (1) day of our receiving the gage in for service or calibration.

All parts are available on-site which gives us the ability to service gages quickly and ship most gages within one day anywhere in the world.

A Certificate of Calibration (N.I.S.T. traceable) is included with all repaired and calibrated instruments at no additional cost ($95-$130 value).

To ensure the fastest possible service, simply fill-out and return the Service Form with your instrument. There is no need to call for a return authorization. NO RMA required!

NO RMA required!

 

Technical Support
Our highly trained technical support team is dedicated to solving problems quickly. Contact our technical department for all questions including application assistance, instrument technical support, quality and calibration and more..

During regular business hours (8am-5pm EST), all telephone calls are answered directly by a qualified team member. You are immediately directed to someone who can assist you.

Technical Support is also available using our Technical Support Request Form. Our experienced technical support staff will contact you within 24 hours, or on the next regular business day, following a weekend or holiday.

 

FM
POSITEST FM (0-80 MILS) - COATING THICKNESS GAGE
Mfg. item #: FM
DEFFM
Ships FREE via UPS to lower 48 states.5
$350.00

354
F
POSITEST F (0-2000 MICRONS) - COATING THICKNESS GAGE
Mfg. item #: F
DEFF
Ships FREE via UPS to lower 48 states.5
$350.00

354
GM
POSITEST GM (0-8 MILS) - COATING THICKNESS GAGE
Mfg. item #: GM
DEFGM
Ships FREE via UPS to lower 48 states.5
$350.00

354
G
POSITEST G (0-200 MICRONS) - COATING THICKNESS GAGE
Mfg. item #: G
DEFG
Ships FREE via UPS to lower 48 states.5
$350.00

354
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