Aalborg DFM Digital - Manual (Page 31)

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Figure b-21, Flow Condition Screen
Use (
p) or (q) buttons to highlight desired option and press the (u) [Enter] button.
5.3.12 LCD backlit Energy-Saving Setting
The DFM's LCD incorporates Energy-saving auto shut-off backlit feature. If
enabled, after 15 minutes of operation without user intervention the LCD backlit
turns off. In order to turn on LCD backlit press any key on the keypad. In order to
enable/disable Energy-saving auto shut-off backlit feature user would traverse the
menu tree until reaching the "Back Light Timer" menu. The following screen will
appear:
Figure b-22, LCD backlit Energy-saving Screen
Use (
p) or (q) buttons to highlight desired option and press the (u) [Enter] button.
5.4 Flow, Temperature, Pressure output Signals
Configuration
DFM series Mass Flow Meters are equipped with calibrated 0-5 Vdc (0-10 Vdc
optional) and 4-20 mA output signals. The set of the jumpers (J2, J3, J4) on the
analog printed circuit board is used to switch between 0-5 Vdc, 0-10 Vdc or 4-20
mA output signals (see Table VI).
Note: DFM 26/36/46 models are equipped with gas flow rate output
signal only. DFM 27/37/47 models in addition provide output signals
for temperature and pressure.
,