[16]
Scale Limit Values determines what the display will show at the limits of the input sensor. For example, you
connect a 4-‐20mA pressure transmitter to ALP94. You set the “
SCL-Lo
”(Scale-‐Low) parameter to “
0
” and
“SCL-‐HI”(Scale-‐High) parameter to “
100
”. Then the display will show “
0
” at 4mA input, “
50
” at 12mA input,
and “
100
” at 20mA input. Scale Limit Values can be used with all four types of sensors: 4-‐20mA, 0-‐20mA, 0-‐
10V and potentiometer (see 4.1.1 Sensor Type Selection p. 8). For 4-‐20mA, 0-‐20mA and 0-‐10V type
sensors, Scale Limit Values correspond to sensor limits. For potentiometers, Scale Limit Values must be
adjusted with manual calibration (see QUICK POTENTIOMETER CALIBRATION GUIDE, p. 24).
In order to set Scale Limit Values, you should enter to Setting Menu by pressing PRG ( ) and UP ( )
buttons. The display will show the first submenu in Setting Menu, “
INPvT
”. Press UP ( ) button twice,
and the display will show “
CaLIb
”. Press PRG ( ) button to enter Calibration Menu. “
SCL-Lo
” and
“
SCL-HI
” are the first parameters in the Calibration Menu. Press PRG ( ) button to see the current
setting for “
SCL-Lo
”. In order to change the setting, press PRG ( ) button again. The rightmost digit will
start flashing. While the rightmost digit is flashing, use UP ( ) and DOWN ( ) buttons to increase or
decrease that digit. Press LEFT ( ) button to go to the next digit. Once you entered the value you want
for “
SCL-Lo
”, press PRG ( ) button to save it. If you want to exit without saving, press ESC ( ) button.
You can follow the same procedure for setting “
SCL-HI
”.
4.3. CALIBRATION MENU
4.3.1.
Setting of Scale Limit Values
(SCL-‐Lo / SCL-‐HI)
prog
˝CaLIb
SCL-Lo SCL-HI
0
SCL-Lo SCL-HI CAL-Lo CAL-HI avtoCL Offset FILteR
prog
˝CaLIb
˝Inpvt
x2
Calibration Menu
˝Inpvt
x2
...
Calibration Menu
Use UP and DOWN buttons
to increase the flashing
digit, and use LEFT button
to go to next digit.
Scale Limit Value
