ALTANA Haze-Gard Plus Operating Instructions - Manual (Page 13)

W A R M - U P
Only about 2 minutes are needed for
warm-up.
As soon as the instrument has
completed the self-diagnosis and
status displays, it immediately goes
into the mode that was active at
the last shutdown. It is now ready
for operation. Before you can take
measurements after starting the
instrument for the first time, it must
be calibrated (see Chapter 5).