This is the 3rd part of our 4 part series featuring the Microtest System. In part 1 we introduced the Microtest 3-Point Internal Micrometer system and compared it to the standard cone system used. We discussed the effects of Mechanical Wear on 3-Point internal Micrometers and how the Microtest system helps users saves cost while remaining highly accurate.
Next, we’re going to look at how a Microtest system overcomes the effects of Thermal influence which causes error when inspectors takes measurements on their parts.
Thermal influence
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- MICROTEST® System
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- Cone System
The MICROTEST® system exhibits proportional, linear behaviour. Temperature expansion errors are to a large extent compensated out. In the case of measurements not taken at the standard temperature of 20°C the results achieved are thus approximately of equal accuracy to those taken in the measurement room.
In spite of having a design that is to a large extent temperature-independent our measurement unit is insulated at all points of contact with the user, in order to exclude any undesirable heat transfer from the user’s hands.
Conventional cone systems behave in an undefined and uncontrolled manner. The behaviour is dependent on the expansion at the time of the measurement of the connecting elements between cone and measurement spindle. Usually no protection against heat transfer from the user’s hands is provided.
More on the Microtest 3-Point Internal Micrometer
