SIT/SDS Series
DIGITAL DIFFERENTIAL PRESSURE SWITCH & TRANSMITTER
Copyright
ⓒ
2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.com
6
User setting mode
Zero setting
Press ENTER for more than 3 seconds to save and
exist in the setting mode.
Release User setting mode :
Press ENTER once to save and exit to measure
mode.
If you are not operate this instrument for about 1
minute, It's released user setting mode automatically
and return to measuring mode.
Optimize zero to display and current out automatically
by front key pressed.
CAUTION : Release pressure port free before
zero set
Press MODE for more
than 3 seconds till sw1
LED is on and appear
"Int" on segment display
Press MODE key once
till appear "PoFS" on
segment.
Press ENTER once to
set zero and exit to
measure mode. "PoFS"
blink for about 5
seconds to calculate
zero.
Press ENTER key for
more than 5 seconds till
appear "SAvE" on
segment to save and
exist in the setting mode.
Sampling time setting
It can be set 0.1~5.0 seconds by 0.1 sec resolution.
SIT/SDS reading pressure 0.1sec interval for a
setting time and calculate average pressure to
display and 4-20mA output.
(ex) setting time : 2 sec
SIT/SDS reading pressure 20 times for 2 seconds
and calculate average of measured 20 data to
display and 4-20mA current output.
This functions is useful to measure hunted pressure
Press MODE key for
more than 3 seconds till
sw1 LED is on and
appear "Int" on segment
display like left.
Release MODE key then
appear current set time
on segment display
(default set time is 0.5
sec)
Set your sampling time
use up/down key
Press ENTER once to
save and exit to measure
mode.
Press ENTER key for
more than 3 seconds till
appear "SAvE" on
segment to save and
exist in the sampling time
setting mode
4mA current setting(SIT)
This function is set pressure level to 4mA current out.
Generally pressure zero is setting to 4mA current out.
By the way, negative pressure is setting in another
case. SIT/SDS can be set any pressure level to 4mA
current out between low and high pressure range.
Low and high pressure ranges are setting in factory.
Press MODE key for
more than 3 seconds till
appear "Int" on segment
display.
Press MODE key once
till appear "P4" on
segment.
Set your pressure level
to 4mA out use up/down
key
Press ENTER once to
save and exit to measure
mode.
Press ENTER key for
more than 3 seconds till
appear "SAvE" on segm
-ent to save and exist in
the setting mode
PEAK
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PEAK
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PK
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