Manual
Version
Page
DB04A
EN A1-9
PKP Prozessmesstechnik
35
Note:
The numbers are not rounded off, but they are made invisible (also called a floor function)
The totalizer and the bar graph will not be effected by this setting and will also work based on the
real high resolution flow.
4.12.5. Security
To avoid the unauthorized changing of settings in the menu, it is
possible to protect the menu with a self-defined password. If you
enable this option you first have to enter a 4-digit numeric password to
gain access to the menus. In this setting you can also define that
password. You can only activate the password after you have defined
your own personal password under “Set password”
If you forget or lose your password, please contact the factory at:
4.12.6. Battery auto off
To extend the battery life to the maximum we recommend that you set
this menu so that, when powered with a battery, the
DB04A
will switch off
automatically after the indicated number of minutes. Please note that this
menu has no effect if the unit is powered by USB or the external 24 Vdc.
Once the unit is switched off it no longer totalizes the flow.
Note: When we supply the unit, the “
auto power off”
will be set to 15 minutes
4.12.7. Factory reset
If you activate the factory reset, all variables will be reset to the factory
default (for instance the password protection will be disabled). The
continuous totalizer, however, keeps its value. Only the resettable totalizer
gets reset to zero. The reset takes about 30 seconds.
5. Maintenance
When operated properly and with the use of clean and dry gas,
DB04A
devices do not require any
routine maintenance. There are no internal moving parts in the measurement part of the device.
However, we recommend that the calibration is checked after 12 months. If your
DB04A
is still
within tolerance, this time interval can be extended. The timing of the periodic check is the
customer's responsibility.
5.10. Cleaning to remove contamination
Depending on the type of contamination, on-site cleaning of the measuring or control device may
be possible. As a first step, we recommend flushing with N
2
or dry air. If it is contaminated with
liquids (ex. oil), pure methanol alcohol (100%) can be used. After cleaning, rinse the
DB04A
with
the optional needle valve position fully open with dry air or nitrogen for approximately 15 minutes to
dry out all liquids.