Maintenance, Cleaning, Disposal; Changing The Batteries - wtw Turb 355 IR/T Operating Manual

Battery symbol
flashes
Battery symbol
permanently
illuminated
5

Maintenance, cleaning, disposal

5.1

Changing the batteries

The batteries must soon be changed if the battery symbol
h
flashes on the display:
2
CAL ERR
1 3
4
4 2 8 3
The batteries are nearly empty and should soon be
exchanged. The instrument still measures with the specified
accuracy.
A battery exchange is immediately necessary when the
h
battery symbol
2
ERR
CAL 1 3
4
4 2 8 3
In this case, change the batteries immediately. The
instrument might no longer measure with the specified
accuracy. If the batteries are too weak to measure, the
turbidimeter switches itself off. It can only be switched on
again when the batteries have been replaced.
Maintenance, cleaning, disposal
NTU
FNU
is displayed permanently:
NTU
FNU
69