725
FIBER
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SENSORS
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FLOW
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INDUCTIVE
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FA COMPONENTS
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UV CURING
SYSTEMS
Head-separated Digital Pressure Sensor
DP5
SERIES
DPH
SERIES
FUNCTIONS
Able to handle a wide variety of applications through its four output modes
Leak test mode
Window comparator mode
It is suitable for a leak test since Comparative Output
1 can be set to the hysteresis mode and Comparative
Output 2 can be set to the window comparator mode.
Using it along with the external input function the auto-
reference / remote zero-adjustment functions ensures a
reliable leak test.
Set Value 4
Set Value 3
Set Value 2
Set Value 1
0
ON
H
2
H
2
H
1
H
1
: 1 digit or more
H
2
: 1 digit
H
1
: 2 digits or more
when using psi unit
H
2
: 2 digits when
using psi unit
The comparative
output can
be turned ON
or OFF by a
pressure which
is within the set
pressure range.
Set value 4
Set value 3
Set value 2
Set value 1
0
Pressure
H
H
H
H
H: 1 digit
digits
(
2using psiwhen
)
unit
Comparative
ON
Output 1
OFF
Comparative
ON
Output 2
OFF
Pressure
*H: Hysteresis
Comparative
OFF
Output 1
ON
Comparative
OFF
Output 2
Hysteresis mode
(
(
Filling pressure
)
detection
(Leak detection)
*H
1
, H
2
: Hysteresis
)
Forced output mode
The hysteresis of the
comparative outputs
can be set arbitrarily
by the set values for
ON / OFF control.
Set value 4
Set value 3
Set value 2
Set value 1
0
H
H
Comparative
ON
Output 1
OFF
Comparative
ON
Output 2
OFF
H: 1 digit or more (2 digits or more when using psi unit)
*H: Hysteresis
The comparative outputs are forcibly maintained at OFF
level in the sensing mode, irrespective of the set values.
Hence, it is convenient for only displaying the pressure
value without using the comparative outputs. Further,
since the comparative outputs can be forcibly switched
ON or OFF with key operation, without actually applying
pressure,
this mode is
Press
Press
suitable for
MODE key
MODE key
an operation
UP key UP key UP key
ON
Comparative
check or
Output 1
OFF
a start-up
DOWN
DOWN DOWN
check.
key
key
key
ON
Comparative
Output 2
Sensing
mode
Forced
output mode
OFF
Sensing
mode
Equipped with external input function (auto-reference and remote zero-adjustment functions)
If the reference pressure of the equipment changes, the
auto-reference function can compensate the threshold
levels by the amount of change and the remote zero-
adjustment function can reset the display value to zero
via external input. These functions are ideal for places
where the reference pressure fluctuates wildly, or where
fine settings are desired.
The external input functions can be selected with the
supplementary setting mode using key operations.
Example: When leak test mode is applied, Comparative
Output 1 detects the filling pressure and
Comparative Output 2 detects the leakage.
Without auto-reference and remote zero-adjustment functions
Mode: Leak test mode
Comparative Output 2 (Set value: lower limit···25 / upper limit···30)
Fixed setting
Pressure
40
Fail?
30
25
20
15
Variation in the filling pressure
Trial 1
Trial 2
Trial 3
Leak threshold level
OK
Fail?
Selection
Guide
Pressure/
Digital Display
Pressure/
Head-separated
Flow
Other Products
Pressure
Because the threshold is fixed for conventional pressure sensors, changes
in the reference pressure result in wrong decisions.
0
Time
DPC-L100/
DPH-L100
DPS-400/
DPH-100
DPC-100/
DPH-100
DP5/DPH
With auto-reference function applied
Comparative Output 2 (Set value: lower limit···–5 / upper limit···0)
Sets the absolute threshold level
Auto-reference input
Trial 1
Threshold level after
applying auto-reference input
With remote zero-adjustment function applied
Comparative Output 2 (Set value: lower limit···–5 / upper limit···0)
Sets the absolute threshold level
Remote zero-adjustment input
Trial 1
30
25
20
15
30
25
20
15
0
−5
OK
Threshold level after applying
remote zero-adjustment input
OK
The display remains at “30” and
only the threshold level is changed.
Pressure
0
Threshold level before applying
auto-reference input
The display is forced to “0”, and
only the filling pressure drop
range is displayed.
Pressure
0
Threshold level before applying
remote zero-adjustment input
−5
Time
Displayed when remote
zero-adjustment input is applied···
–5
When auto-reference input is applied, the reference pressure “30” is added
to the threshold level. If the reference pressure changes to “20” or “40”, the
auto-reference input compensates for this every time by changing the
threshold level, so any variation in the filling pressure can be ignored.
Time
Auto-reference input value···
When remote zero-adjustment input is applied, the reference pressure is forced to “0”.
If the reference pressure changes to “20” or “40”, the remote zero-adjustment input
adjusts the reference pressure to “0” every time the reference pressure changes, so
any variation in the filling pressure can be ignored.
PANASONICBATTERY [ Panasonic Battery Group ]
