F1 2 Probes; F1 2 High Temperature Pinip™ Probes; Coatings On Galvanised Or Metallised Steel - Elcometer 456 Operating Instructions Manual

7.5 F1 2 probes

The F1 2 scale combines the F1 scale with the F2 scale
in a single probe. The user selects the appropriate range
for the work in hand. The resolution of the gauge is
dependent on the scale selected on the gauge.
7.6 F1 2 High temperature PINIP™ probes
Do not exceed the maximum measurement speed when
using these probes - see page 41.
Note: Refer to special calibration procedure - see
"Calibrating High Temperature PINIP™ Probes" on
page 31.

7.7 Coatings on galvanised or metallised steel

The FNF probe in fixed N1 mode may be used to
measure paint coatings on galvanised, aluminium (Al) or
zinc (Zn) sprayed steel substrates.
1. Set
(MENU/SETUP/PROBE).
2. Zero and calibrate the gauge on a sample of the
coated steel - see "Calibration adjustment" on
page 23.
Care must be taken to ensure that the calibration
conditions are not affected by changes in the zinc or
aluminium
determined by checking the zero over an area of the
galvanised or metal-coated steel. Metal coatings on
steel above 50 µm (2 mil/thou) should be consistent
enough to obtain a stable zero on the layer of metal.
3. Take readings.
These probes are capable of measuring on
surfaces up to 250°C (480°F). Wear
appropriate protective clothing and take
care to avoid bodily contact with the hot
surface during measurement.
the gauge
coating
to the
thickness.
N1 mode
This can be
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