wtw Turb 350 IR, Operating Manual, Page: 6 / 42

Overview
48
1.1 Display
The LCD display has the following display elements:
1 Calibration symbol - instrument in the Calibration
mode
2 - Number of the selected calibration standard (when
the CAL display appears), or:
- Error number (flashes when the error symbol
appears)
3 Error symbol - flashes when an error occurs
4 Battery symbol - flashes if the battery needs to be
changed
5 Measuring unit NTU
6 Main line
...8
NTU
CAL ERR
1 3
2
4
1 2 3 4
5
6