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TTI-22 Iss.04– 11/15
10
Locking Calibration Parameters
With a second password, the "Lock-Password", you can lock parts of the menu so that the relevant settings
for the temperature measurement can no longer be manipulated. In this way, for example, standards bureau
officers can lock TTI-22 for temperature measurements requiring official calibration.
After the Lock password has been entered, the menu items 1 to 3 in the submenu 2 Edit Configuration
are locked. Sensor parameters and reference resistor parameters and the time and date can no longer be
altered.
Entering Lock password
1.
Enter the user password.
2.
Choose menu 4 LOCK Device.
3.
Enter a Lock password.
Now TTI-22 is locked. In the main menu 4 UNLOCK Device is displayed.
In locked condition, the date, time, reference resistor parameters and sensor parameters can be
accessed, but not altered.
4.
To unlock TTI-22, select the menu 4 UNLOCK Device and enter the Lock password.
Now TTI-22 is unlocked. In the main menu 4 LOCK Device is displayed.
Lock password forgotten
If you have forgotten the Lock password, contact your Isotech service engineer. This engineer can
unlock TTI-22. Then you have to define a new Lock password.
