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-77-
No.PS
※※
-OMV0004-C
Problem
No.
Problem
Problem possible
causes
Investigation method
Countermeasures
8
•The display
turns OFF.
•Part of the
display is
missing.
Incorrect power
supply
Check if the power supply voltage is
in the range 12 to 24 VDC ±10%.
Supply power in the range
12 to 24 VDC ±10%.
Incorrect wiring
Check the power supply wiring.
Check if the brown and blue wires are
connected to DC(+) and DC(-)
respectively, and if the wiring is
secure.
Check and correct the
wiring.
Power saving
mode
Check if power saving mode is
selected.
Select the power saving
mode again.
Product failure
Replace the product.
9
Display flashes.
Incorrect wiring
(1) Check the power supply wiring.
(2) Check if there is bending stress
applied to any part of the lead
wire.
(1) Check and correct the
wiring.
(2) Correct the wiring (bend
radius and stress).
10
Pressure display
is unstable when
products are in
close proximity to
each other.
Variation within
the display
accuracy range
Check if the variation is within the
display accuracy range.
Use the fine adjustment
mode to adjust the display if
the variation is within the
display accuracy range.
Product failure
Replace the product.
11
The display
accuracy does
not meet the
specifications.
Foreign matter
entered
Confirmed foreign matter entry or
sticking to the piping port.
Use 5
m of filter to prevent
foreign matter from entering
or sticking. Discharge the
condensate of the filter
periodically.
Air or liquid
leakage
Check if air or liquid are leaking from
the piping.
Rework the piping.
If the tightening torque is
exceeded, the mounting
screws, brackets and the
product may be damaged.
Warming up
inadequate
Check if the product satisfies the
specified accuracy 10 minutes after
supplying power.
After energizing, the display
and output can drift. For
precise pressure detection,
allow the product to warm up
for 10 to 15 minutes.
Product failure
Replace the product.
12
Display
measurement
unit cannot be
changed.
Model selection
(model selected
does not have
units selection
function)
Check if the product number printed
on the product indicates units
selection function type.
Unit s selection function is
not available for fixed to SI
units type.
(kPa
MPa is available)
: The units selection function is
not for use in Japan due to a
new measurement law.
: Fixed to SI units: kPa, MPa
Product failure
Replace the product.