3UZX418145E-06
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How to Do Zero Adjust
Using the Zero Adjust button
(1) Make sure that your Pressure Sensor is
opened to the atmospheric state.
(2) Press and hold the Zero Adjust button for at
least three seconds.
- The LED will flash.
- When you release your hand from the Zero
Adjust button, zero adjust will start.
(3) After the zero adjust is complete, the LED
lamp will change from a flashing state to a
constantly lit state. The pressure sensor
returns to measurement mode.
[Zero adjust error]
If the LED lamp keeps flashing after at least
three seconds from the time zero adjust started,
it is the indication of a zero adjust error.
- When zero adjust is in progress, an error
will occur if the pressure in your piping
system fluctuates by ±1% F.S. or more.
- To reset the error, press and hold the Zero
Adjust button for at least one second.
After the error resets, redo the zero adjust
procedure from Step (1), as described in
Using the Zero Adjust button.
Zero adjust by external input
(1) Make sure that your Pressure Sensor is
opened to the atmospheric state.
(2) Short circuit the Zero Adjust input signal for at
least three seconds.
- When zero adjust starts, the zero adjust
output alternates ON/OFF every 0.2
seconds.
- Zero adjust begins when the Zero adjust
input is opened.
(3) When zero adjustments is complete, the zero
adjustment output transistor activate (short the
output signal to 0V) and resume measurement
mode.
[Zero adjust error]
If the zero adjust output keeps alternating
ON/OFF after at least three seconds from the
time zero adjust started, it is the indication of a
zero adjust error.
- When zero adjust is in progress, an error
will occur if the pressure in your piping
system fluctuates by ±1% F.S. or more.
- To reset the error, short circuit the zero
adjust input for at least one second.
After the error resets, redo the zero adjust
procedure from Step (1), as described in
Zero
Adjust by external input.
Zero adjust conditions:
- Open to the atmospheric state.
- Pressure fluctuation must be within ±1% F.S.
ZE
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Zero adjust conditions:
- Open to the atmospheric state.
- Pressure fluctuation must be within ±1% F.S.
CAUTION
Before doing the zero
adjust
procedure,
Pressure Sensor is opened
to the
atmospheric
state.
Before doing the zero
adjust
procedure,
Pressure Sensor is opened
to the
atmospheric
state.
CAUTION
Periodically provide the ZERO point
adjustment.
