Testex Micrometer Thickness Gauge

Testex Micrometer Thickness Gauge

The Testex Gauge is a precision, spring-loaded Dial Thickness Gauge specifically designed for measuring thickness of Testex replica tape. Range of .0001" to .050"; resolution of .1 mil The Testex Micrometer is stocked in imperial units. A metric version is available by special order.

Characteristics of the spring micrometer gage:
All characterization of replica tape profile measurements has been performed with a gage having a measurement accuracy of 0.2 mil (5 microns), closing force of 3 ounces (1.1 N) and at least one anvil having a circular diameter of 0.25 inch (6.3 mm). Suitable inch and metric unit gages are available from Testex and other companies but great care should be taken to assure that they are specifically designed to be used with replica tape.

Primary units used in these instructions are micrometers (μm). Secondary units are thousandths of an inch (mils).
A: For measurement with Coarse & X-Coarse grades of tape, target roughness should be in the range 20 to 115 μm (0.8 to 4.5 mils).
B: To measure the tape you will need a gage specifically designed for use with replica tape.
Pre-set the gage to minus 50 μm (minus 2.0 mils). On a standard Testex gage this is equivalent to presetting the gage to 150 μm (8.0 mils). Pre-setting has the effect of automatically subtracting the thickness of the incompressible layer.
C: Separate a piece of tape from its release paper and place on surface to be measured.
D: Firmly and completely compress replica film against the surface to be measured using an approved rubbing tool.
E: Measure thickness of resulting replica with gage.
F: If a measurement made with either Coarse or X-Coarse grade tape is between 38 and 64 μm (1.5 and 2.5 mils) inclusive, take a 2nd measurement at the same spot with the OTHER grade.
If BOTH readings are in the above range, record the average of the two measurements as the (peakto-valley) roughness.
If EITHER reading is outside this range record it as the profile.

Sources Of Error In Gage Profile Measurement
A human hair is about 2 mils (50 microns) thick and individual bacteria are 0.1 mil (2.5 microns) in size. Field profile measurements to accuracies in this range will be influenced by subtle effects.

The four major sources of error in determining the profile of a blasted surface using replica tape and a micrometer gage are: 1) Inherent variation in point-to-point profile over the surface being measured,
SSPC - The Society for Protective Coatings - is currently (2010) developing standardized guidance on number of measurements per unit area.
2) Presence of particles of dirt on either the replica tape or gage,
Reasonable care should be taken to keep the gage anvils free of dirt or grit. Questionable measurements should be double checked.
3) Gage accuracy,
Suitable micrometric thickness gages commonly cite an accuracy of ±0.2 mil (5 microns). In addition to gear errors of this magnitude, we have observed that they commonly read approximately 0.1 mil high at room temperature and 0.1 mil low at freezing. Only gages specifically designed for use with replica tape will have the correct accuracy, closing force, anvil/contact point dimensions and parallelism specifications. 4) Rubbing technique,
Including excessive or inadequate burnishing force.

We do undertake Servicing and repairing of Testex Micrometer Thickness Gauge Testex Range of products throughout india

Apart from supplying Testex products in India through dealers network, catering to a variety of customers ranging from Atomic energy, Electricity Boards, Electrical Laboratory, Shopping Complexes, Shopping Mall, Electrical Contractors, Engineering Industries, Turnkey Construction Companies, Railways, Defence Installations, Research Laboratories, Educational Institutes and various Research and Development laboratories of leading national and multinational companies.

We DFT TECH, are lutron Authorized Distributors, Importers, Stockists, Dealers and Suppliers of Testex Micrometer Thickness Gauge Products in Chennai, Wayanad, Gujarat, Odisha, Rajasthan, West Bengal, Tripura, Palakkad, Kanyakumari, Theni, Krishnagiri, Namakkal, Sivagangai, Perambalur, Dharmapuri, Erode, Pudukottai and etc..