Max. thickness (ferrous met.)
The maximum coating thickness that the instrument can detect when measuring on ferrous metals such as steel. With a larger coating thickness, the thickness gauge sensor simply cannot “catch” on the metal surface under the paint, and effective measurement will not be possible. This parameter is indicated in micrometers — thousandths of a millimetre; the larger it is, the more versatile the device is, the wider the possibilities for its use. On the other hand, a large maximum measurement thickness can adversely affect the accuracy when measuring small values.
For modern thickness gauges, the maximum thickness
up to 1000 microns is considered small,
from 1000 to 1500 microns — small,
from 1500 to 2000 microns — medium,
more than 2000 microns — significant. In the most advanced professional-level models, this figure can reach 20 – 30 cm.
Max. thickness (non-ferrous met.)
The maximum coating thickness that the instrument can detect when measuring non-ferrous metals such as aluminium alloys. With a larger coating thickness, the thickness gauge sensor simply cannot “catch” on the metal surface under the paint, and effective measurement will not be possible. This parameter is indicated in micrometers — thousandths of a millimetre; the larger it is, the more versatile the device is, the wider the possibilities for its use. On the other hand, a large maximum measurement thickness can adversely affect the accuracy when measuring small values.
For modern thickness gauges, the maximum thickness
up to 1000 microns is considered small,
from 1000 to 1500 microns — small,
from 1500 to 2000 microns — medium,
more than 2000 microns — significant. In the most advanced professional-level models, this figure can reach 20 – 30 cm.
Measurement speed
The rate of measurement provided by the instrument. Indicated by the time that elapses from the measurement command (for example, pressing the corresponding button) until the result is displayed on the display.
Even in the "slowest" modern thickness gauges, this parameter does not exceed two seconds. So it makes sense to pay attention to it, first of all, if time saving is of critical importance — for example, if it is planned to make measurements often and in large quantities, including in continuous metering mode (see below).
Continuous measurement
Support of the device of a mode of
continuous measurement.
In this mode, the user does not need to press the button every time to take measurements — the device constantly scans the space and automatically displays the measurement results on each subsequent contact with the painted surface. This format is very convenient for large-scale work — for example, for a comprehensive check of the car body.
