User Guide

12
5 PASSWORD
To access Calibration and Setup functions, you need to enter a password code. You
cannot change calibration and setup parameters unless you first enter the password.
The αlpha TDS 200 controller features two separate passwords:
• TDS and Temperature calibration mode password = 011
• Setup program password = 022
To enter the password:
1. Press ENTER twice. The display reads “P.000”. The first “0” flashes.
2. Press ENTER again to leave the first digit “0” and to scroll to the next number.
3. Press the ▲or ▼keys to change the second digit to the correct number (1 or 2).
Press ENTER.
4. Press the ▲or ▼keys to change the second digit to the correct number (1 or 2).
Press ENTER.
If you enter an incorrect digit, press MODE to back up.
5. Press ENTER again. You are now in Calibration mode or Setup mode, depending
on password entered.
Note: In the Password Entry mode, if there is no key-press for more than 30 seconds,
Controller will automatically revert to measurement mode.