Hanwei AT8020, Using Manual, Page: 7 / 8

5. Function setup
In tester turning on status, press button first and then press
button to enter into function setup interface (As pic 3).
mg/L
Pic 3
In function setup functions, press button to choose numbers,
then press button for confirmation, input
“1111”(as pic 4) to enter
into “unit setup” menu (as pic 5), input “1112”
（
as Pic 6
）
to enter into
“alarming level setup” menu(as pic 7).
mg/L m g / L m g / L m g / L
Pic 4 Pic 5 Pic 6 Pic 7
After entering into these menus, pressing button to change the
unit or alarming level; pressing button to save this setup and exit;
Pressing button to not save this setup.
Remark: The history records will be cleared up if setting the testing
unit or alarming level again.
The default alarming level is 0.250mg/L
In other units it
’s 55mg/100mL; 0.050%BAC; 0.500‰BAC;
0.500g/L.