HF scientific MicroTOL Online Turbidimeter - Manual (Page 16)

MICRO TOL (5/10) 10
Rev. 4.8
The security code (333) must be entered to gain access to CAL or CONFIG menus.
Notice that the first number in the code is flashing; the flashing indicates that this is the
number to be changed. Use the
t or u arrows to select the first of the three numbers in
the code and then press the
↵ button to accept the first number of the code. Now enter the
second number in the code. Proceed as with the first number followed by
↵. Then repeat
the process for the third number in the access code, and finish with the
↵
button.
If the valid access code has been selected, the instrument will be directed to the calibration
mode. If the wrong access code is selected, the instrument will return to the AUTO mode.
Refer to section 7.7 Enabling the Security Access for more information.