PLT / PLX Series
DIGITAL DIFFERENTIAL PRESSURE TRANSMITTER
Copyright
2003.08 ULFA TECHNOLOGY CO.,LTD http://www.ulfatech.com
4
Function
Setting 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,
PLT measures 20 times for 2 seconds and out to
display and 4-20mA out put by average of 20 times
measured value.
Transmitter :
PLT 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 :
PLT displays warning
on LED 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.
Key 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
