Automation Dr. Nix QNix 8500, Instruction Manual

Page: 10 / 21

Instruction Manual QNix
®
8500
- 10 -
To perform a two-point calibration spread a calibration foil with a thickness close to the lower
limit of the expected coating thickness range on the uncoated substrate and then place the
probe on that film. Adjust the reading using the
▲ and ▼ buttons until it matches the films
thickness. Pressing ► confirms this setting.
Now place the probe on a measuring film with a thickness close to the upper limit of the coat-
ing thickness range. Again, adjust the reading
using ▲and ▼ until it matches the films thick-
ness. Conclude the setting by pressing ►. The calibration is now activated and the gauge re-
turns to the standard measuring mode.
8.1.1.4.3 Renaming a Custom-Designed Calibration
To rename a custom-designed calibration follow the instructions given under § 8.1.1.3.
After changing the name the gauge automatically returns to the menu item described in
§ 8.1.1.4.
8.1.1.4.4 Deleting a Custom-Designed Calibration
When pressing the ► button the display shows „OK“ and „Cancel“. Pressing “OK” deletes
the user-specific calibration.
8.1.2 Average Zero Reference on Rough Surface
When placing the probe on rough surfaces several times, the values for the zero reference
will vary every time. The rougher the surface, the greater the variations in reading will be.
The Average Zero Reference option allows the user to find an average zero reference. To do
this, define a number of zero reference readings (max. 19) to be taken with the probe before
the gauge will calculate the average zero reference based on the readings taken.
After selecting the menu item, pressing the
► button will display the options “OFF” and
“Number of Zero Readings”.
Chose “OFF” to determine the zero reference by placing the probe on the substrate only
once.
Chose “Number of Zero Readings” to calculate the average zero reference. Use ▲ and▼ to
select how many readings have to be taken as a basis for the calculation of the average zero
reference.
If the zero reference is determined using this setting, the number of remaining readings is
displayed. After the individual readings have all been recorded the average zero reference is
displayed in standard font.
8.1.3 Menu Guided Setting of the Zero Reference
Using the menu items
„Zero“ and „Infi“ the corresponding values can be set separately.
To record the zero value select the menu item “Zero” and either place the probe on one of
the reference plates included in the gauges case, or place it on a adequate uncoated Fe or
NFe substrate (see also § 6).
Alternatively, you can
place the probe first and then select the menu item “Zero”.
To record the infinity value select the menu item „Infi“ while the probes head is at least 5 cen-
timetres away from any metal part. Take care that the probes head is not pressed during this
process.
8.2 Measuring Mode
8.2.1 Selecting the Substrate
In addition to the absolute Fe or NFe reading, a combined measurement can be carried out
which will take both the Fe and NFe measurements when the probe is placed.