OZONE ANALYZER BMT 964 Manual, Rev. 04/2021
38
Attention: If the analyser is equipped with the Internal Purge Unit, terminal 2 of the green signal
connector must not be connected externally because it is already connected to the internal
5 VDC power supply!
If the Autozero Interval is set to more than zero hours (1 to 99h), the zeroing is activated by the
purge timer, fully automatically. This includes activating the Purge Control contact and switching
to zero gas, zeroing and switching back to the sample gas.
Note: Setting the Autozero Interval to zero hours means, that the analyzer does not go through
the automatic purge cycle and does not activate the Purge Control contact! In this case, the user
must take care to never initiate zeroing with ozone in the cuvette.
The BMT 964 BT may be ordered together with a soft carrying bag for protecting the instrument
during transport. The bag has room enough for accessories like filter inserts for the sample gas
filter, a tool to open the filter holder and PTFE connecting tubing.
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