Shellab SVAC4-2 - Manual (Page 29)

29
REFERENCE 2
SUNX VACUUM GAUGE
ZERO ADJUSTMENT: The SUNX DP2-20F vacuum gauge comes preset from the factory reading vacuum in inhg
and automatically runs in sensing mode when powered on. At different altitudes the gauge may need to be re-
zeroed. Without pressure applied and vacuum door open exposing the gauge to atmospheric pressure it should read
0.0. If not, zero the gauge by pressing and holding both up and down arrows simultaneously until the display reads
zero then release the buttons and it should return to sensing mode automatically and read zero.
CHANGING VACUUM SCALES: The vacuum gauge can be set to indicate in several different units of vacuum.
Below is a list of the different units of vacuum that can be selected with the corresponding display code.
UNITS
VACUUM
DISPLAY
LETTER
KPA P
KGF/CM2 J
BAR b
PSI S
MMHG H
INHG I
The setup parameters are identified in by a three digit letter code. The first digit represents analog or digital. The
second digit determines the output settings. The third digit determines the vacuum unit scale.
EXAMPLE
FIRST
DIGIT
SECOND
DIGIT
THIRD
DIGIT
d d I
To change the vacuum units, press the mode button while pressing the up arrow button until the display reads Idd
where the first digit d is flashing. Use the up arrow key to scroll trough each digit until the I digit is flashing. Select
vacuum unit scale from the list above and change the display letter that corresponds to the vacuum units by pressing
the down arrow. After the correct display letter is chosen press the mode key once to return to sensing mode.
Changing the first and second digit letter will effect the way the vacuum gage functions and should be left reading dd.
SETTING OUTPUTS: The vacuum gauge comes with two outputs. These outputs are not used and are not hooked
up to do anything. The gauge is used to indicate vacuum only. To set the outputs so the LED light indicator will not
activate on the gauge press the mode key (MODE) once and the display should flash between P-1 and a value.
Press the up arrow until the display reads UP and then press the mode key (MODE) once and the display should
flash between P-2 and a value. Press the up arrow key until the display reads UP and then press the mode key
(MODE) once to return to sensing mode.