Chapter 3 41
Important
Because user units are created to measure uncommon
materials and alloys they are approximate measurements
that can present a greater degree of error when
compared to the materials in the predetermined unit list.
To know how precise a user unit really is you should
work with several test piece samples of known hardness
values that when measured should give you the
approximate same error. This error now becomes a
known factor.
Touch
on
Device
to open the impact device options menu. The
options displayed in this menu will depend on your QH5 model.
In order for you to better understand the relationship that exists
between unit models, impact devices, materials, and hardness units as
well as hardness ranges, please refer to page 56.
Use the
-
keys to scroll all menu
options and touch
to select.
To exit without making changes touch
Figure 3.31: Impact device menu options
When you select
Auto
the impact device type that is connected to the
unit is automatically detected because of Cal-Tag technology available
exclusively from dmq and that is included in all dmq impact devices.
Generic impact devices can be used on dmq units but the impact
