ULFA TECHNOLOGY JANITOR SDT Series User manual

SDT Series DIGITAL DIFFERENTIAL PRESSURETRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY moc.hcetaflu.www//:ptthDTL,.OCⓒ
1
Instruction Manual
(D igital D iffere ntia l P ressure T ra nsm itter)
1 . G e ne ra l S pe cifica tion
2. Insta llation
3. W iring
4 . F unction
5 . S e tting & C a libra tion
Thankyou very much for using SDT pressure transm itter. Please read this Instruction Manual carefully
and throughly for the correct and optimum use of the gauge. Kindly keep this Manual inaconvenient
p
lace for
q
uick reference.
4 Digit Display, 4-20mA Output

SDT Series DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY moc.hcetaflu.www//:ptthDTL,.OCⓒ
2
General Specification
SDT Series pressure transmitter are measures
positive, negative(vacuum) and differential
pressure of air or non corrosive gases, and
for the variously choice of ranges available to
suit your needs precisely.
The SDT Widely used to measure fan and
blower pressures, filter resistance, pressure
drop across orifice plates, liquid levels in
storage tanks and many other applications. The
SDT model has four functions of gauge, peak
pressure detection, Offset( p) pressure and△
transmitter. It is very easy to set and use by
front pad key.
Accuracy is +/-0.25% of full scale.
GENERAL
Maximum Pressure: Rated Range x 3
Media Compatibility: Air and non corrosive gas
Pressure Range: Refer to range table
ELECTRICAL
Power Supply: DC24V(100-.220VAC
50~60Hz
)
Connections: 2 screw terminal block
Display: 4 Digit LCD
W arm up T im e: 15 minutes
TRANSMITTER
Connections: 2 Screw terminal block
Output Signal: 4-20mADC(limited at
30mADC)
Loop Resistance: 0 - 1100 Ω
Zero & Span Adj: One touch Adjustable on
Panel
PERFORMANCE AT 23 ℃
Ran
g
e Table
Zero Output: 4 mA
Model No Range Resolution
Full Span O utput: 20 mA
Accuracy: ±0.25 % FSO(Includes
Linearity, Hysteresis &
Repeatability)
-B1500M ±1500 mmH2O 1 mmH2O
-G3000M 0-3000 mmH2O 1 mmH2O
Operating Temperature: -10 to 70 ℃
-B760H ±760 mmH2O 1 mmH2O
-B01K ±1.000 mmHg 0.001 kg/cm2MECHANICAL
-B07K -1~7.00 kg/cm20.01 kg/cm2
Pressure Connections: 1/4",3/8",1/2" PT male
Materials: Aluminum Case(DieCasting)
-G30K 0~30.00 kg/cm20.01 kg/cm2
W eight about 1.2 kg
-G100K 0~100.0 kg/cm20.1 kg/cm2
-G300K 0~300.0 kg/cm20.1 kg/cm2
STANDARD ACCESSARIES
-G1000K 0~1000 kg/cm21 kg/cm2
Cable Grand
CAPPlug
1/2” 1ea
1/2” 1ea
We can apply to other user specification
(Pressure units and range)

SDT Series DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.comⓒ
3
Installation Wirin
g
LOCATION : Select your site location , Clean and
dry, no shock and vibration, proper to the ambient
temperature and humidity in use.
MOUNTING
The SDT Series Digital Pressure Transmitter is
designed for direct mounting on pipe or other
locations.
You need prepare PT 1/4"(3/8",1/2") female nut
on pipe or mounting locations.
CAUTION 1
You have to grab sensor housing by use
spanner to mounting SDT . Do not hold SDT
body and rotation for mount and release.
CAUTION 2
Do not supply shock pressure to pressure port
POWER CONNECTION
The following procedures are to be used to
install a standard 24VDC main power source.
1.Before connection, the user must first
confirm that the power specification is
DC24V or AC220V.
2.Verify that the facility's main power source is
turned off or disconnected.
3.Connect lead cable to power terminal
matching polarity as shown in FIG.2 below.
Take care that wrong wiring will damage the
Instrument and malfunction (AC220V is not
concerned to polarity)
CURRENT OUT CONNECTION(4-20mA)
The SDT sends a standard 2wire 4-20mA
current out
1. Connect lead cable to current out terminal
matching polarity as shown in FIG.2 below.
2. Do not run the signal cable along with any
high voltage or power cable or put them in
the same race way. It may cause
malfunction due to induction.
(2 WIRE)
(4 WIRE)
FIG. 2

SDT Series DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.comⓒ4
Function Settin
g
and Calibration
Zero setting : Optimize display and current out to
zero automatically by front key pressed.
Peak pressure Measurement : This mode is
display for peak pressure by supplied pressure. And
the display is cleared by press enter key in the peak
mode.
Offset( p) pressure Measurement :△This
mode is display the changed pressure based on the
current pressure. Current pressure is turned into "0"
when offset mode selected. This mode does not
concern to 4-20mA current out put.
Sampling time setting : Sample rate is 0.1sec of
this product. Sampling time is measuring time by
sample rate. For example, if setting time is 2 sec,
SDT measures 20 times for 2 seconds and out to
display and 4-20mA out put by average of 20 times
measured value.
Transmitter : SDT has 4-20mA current out put.
Span (20mA) range can be changed within original
range.
Communication(option) : Measurement
pressure can be sent by RS232 or RS485 for option
specification.
ID setting : This mode set identification number for
communication.
Over pressure warning : SDT displays warning
on LCD for over pressure (positive and negative).
Upper 4 elements of segment(" ") blink for――――
warning when measurement pressure over 10% for
high pressure(factory setting value), And under 4
elements of segment("_ _ _ _") blink for warning
when measurement pressure under 10% for low
pressure(factory setting value),
Factory setting recovery : The parameters are
changed all to factory setting value and all user
setting value is cleared.
Hear by describe key function and setting methode.
Please read this section carefully for the correct and
optimum use of this product.
Ke
y
functions
UP
- Increase setting value
- Offset mode set/reset
DOWN
- Decrease setting value
- Peak pressure mode set/reset
MODE
- Entering into the setting mode
- Setting item circulation
ENTER
- Save setting value
- Clear peak value in the peak mode
- Release setting mode
Peak mode
Press the PEAK(down)
key once to set peak
mode
"PEA" displayed like left
while press peak key
Press the ENTER to
reset peak value and
newly start
Press the PEAK(down)
key once more to release
peak mode
Offset mode
Press the P(UP) key △
once to set offset mode
"dELt" displayed like left
while press P key
△
Press the P(UP) key △
once more to release
offset mode
P
PEAK
P
PEAK
P
PEAK
P PEAK
PEAK
P
PEAK
P
PEAK
P
PEAK
P

SDT Series DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.comⓒ5
User settingmode Zero setting
Entering User setting mode : Press MODE
key for more than 3seconds till appear "I n t" on
LCD into the user setting mode. Press the
MODE key once in user setting mode to change
setting item. The setting item circulate " I n t " ⇒
"PoFS" "P4" "P20" "Id" "FACt⇒⇒⇒⇒
" " I n t " while mode key press repeated.⇒
Each item setting methode is refer to next pages.
Save :If you complete your setting in the each
mode, Press ENTER once to save and exit to
measure mode.
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:Releasepressureportfreebefore
zero set
Press MODE for more
than 3 seconds till
appear "Int" on LCD
display
Press MODE key once
till appear "PoFS" on
LCD display.
Press ENTER once to
set zero and exit to
measure mode. "PoFS"
blink for about 5
seconds to calculate
zero.
PressENTERkeyfor
more than 5 seconds till
appear "SAvE" on LCD
display 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.
PDT reading pressure 0.1sec interval for a setting
time and calculate average pressure to display and
4-20mA output.
(ex)settingtime:2sec
SDT 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
4mA current setting
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.SDTcanbesetanypressurelevelto 4mA
current out between low and high pressure range.
Low and high pressure ranges are setting in factory.
PEAK
P
PEAK
P
PEAK
P
PEAK
P
Press MODE key for
more than 3 seconds till
appear "Int" on LCD
display like left.
Release MODE ke
y
then
appear current set time
on LCD display
(
default
set time is 0.5 sec)
Set
y
our samplin
g
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 display
to save and exist in the
sampling time settin
g
mode
Press MODE key for
more than 3 seconds till
appear "Int" on LCD
display.
Press MODE ke
y
once
till appear "P4" on LCD
display.
Set
y
our pressure level
to 4mA out use up/down
key
Press ENTER once to
save and exit to measure
mode.
Press ENTER ke
y
for
more than 3 seconds till
appear "SAvE" on LCD
display to save and exist
in the setting mode
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P

SDT Series DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright 2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.comⓒ6
20mA current settin
g
Recall to Factor
y
settin
g
value
This function is set pressure level to 20mA current
out, That is set span. SDT can be set any pressure
level to 20mA current out between low and high
pressure ranges.
Low and high pressure ranges are setting in factory.
Press MODE key for
more than 3 seconds till
appear "Int" on LCD
display.
Press MODE key once
till appear "P20" on
LCD display.
Set your pressure level
to 20mA current out use
up/down key
Press ENTER key once
to save and exit to
measure mode.
Press ENTER key for
more than 3 seconds till
appear "SAvE" on LCD
display to save and exist
in the setting mode
This function is recall to initial states of factory
out from unmatched user parameters that zero,
span etc.
Press MODE key for
more than 3 seconds till
appear "Int" on LCD
display.
Press MODE key once
till appear "FACt" on
LCD display.
PressENTERkeyonce
to recall and exit to
measure mode.
PressENTERkeyfor
more than 3 seconds till
appear "SAvE" on LCD
display to recall and exist
in the setting mode
ID No settin
g
ID number is use for address for communication to
master. It's concern to SDT communication function
installed.(option)
Press MODE key for
more than 3 seconds till
appear "Int" on LCD
display.
Press MODE key once
till appear "ID" on LCD
display.
Set your ID No use
up/down key(0~255)
default set is 0.
Press ENTER key once
to save and exit to
measure mode.
Press ENTER key for
more than 3 seconds till
appear "SAvE" on LCD
displaytosaveandexist
in the setting mode.
ULFA TECHNOLOGY CO.,LTD
344, industrial zone ,201 haan 3-dong
kwang myung-city, kyung ki-do
423-754 KOREA
TEL:[phone] FAX:[phone]
[email protected]
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P
PEAK
P