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PRESSURE SENSORS

DP5/DPH

Head-separated

DP4

DP2

DP3

DP-M

Digital Display

PE

LED Bar Display

PRECAUTIONS FOR PROPER USE

DP4

785

This product is not a safety sensor. Its use is not
intended or designed to protect life and prevent
body injury or property damage from dangerous
parts of machinery. It is a normal pressure
detection sensor.

The  DP4 series is designed for use with non-
corrosive gas. It cannot be used with liquid or
corrosive gas.

Displays measured pressure, settings, error
messages and key-protect status.

Red display when output is ON.

Green display when output is OFF.

Mode selection key
(       )

Decrement key
(DOWN)

Increment key
(UP)

In the initial setting mode and
supplementary setting mode,
pressing the key changes the
set conditions.

In the pressure value setting
mode, pressing the key
changes the set value.

In the sensing mode, pressing
the key continuously for 4 sec.,
or more, displays the bottom
hold value.

In the sensing mode, if both keys are simultaneously

pressed continuously

, zero-point adjustment is done.

In the initial setting mode and
supplementary setting mode,
pressing the key changes the
setting item.

In the pressure value setting
mode, pressing the key
changes the set value.

In the sensing mode, pressing
the key continuously for 4 sec.,
or more, displays the peak hold
value.

Description

3

1

/

2

digit LCD display

with red and green
backlight

In the pressure setting mode, pressing the
key changes the setting item. In addition, if
pressed for 4 sec., or more, in Set Value 1 
(P-1) or Set Value 4 (P-4) setting mode, the
setting mode will change to either Set Value 4
(P-4) or Set Value 1 (P-1) setting mode.

In the sensing mode, pressing the key
continuously for 4 sec., or more, can
set / cancel the key-protect.

In the sensing mode, pressing both lncrement
key and Mode selection key simultaneously
changes the mode to the initial setting mode.
Whereas, pressing both Decrement key and
Mode selection key simultaneously changes
the mode to the supplementary setting mode.

Function

1

2

3

4

(

(

MODE

Operation

• 

If setting is impossible even with pressing the MODE key,
verify whether the key-protect function is enabled. Please
note that pressing down on the MODE key for an
extended moment will enable the key-protect function as
soon as the key is released. 

• 

If using the window comparator mode, set the pressure
value so that there is a difference of 3 digits, or more,
between Set Value 1 (P-1) and Set Value 2 (P-2). No
output will be possible with a 0 to 2 digit difference.

Functional description

DP

4

–101.3 kPa

DOWN

MODE

UP

1

4

2

3

Conditions in use for CE conformity

• 

The DP4 series is a CE conformity product complying with
EMC Directive. The harmonized standard with regard to
immunity that applies to this product is EN 61000-6-2
(Note) and the following condition must be met to conform
to that standard.

Condition

Wiring

Make sure that the power supply is off while wiring.

Verify that the supply voltage variation is within the rating.

If power is supplied from a commercial switching regulator,
ensure that the frame ground (F.G.) terminal of the power
supply is connected to an actual ground.

In case noise generating equipment (switching regulator,
inverter motor, etc.) is used in the vicinity of this sensor,
connect the frame ground (F.G.) terminal of the equipment to
an actual ground.

If the used power supply generates a surge, connect a surge
absorber to the power supply to absorb the surge.

Do not run the wires together with high-voltage lines or power
lines or put them in the same raceway. This can cause
malfunction due to induction.

In order to reduce noise, make the wiring as short as possible.

Others

Use within the rated pressure range.

Do not apply pressure exceeding the pressure withstandability
value. The diaphragm will get damaged and correct operation
shall not be maintained.

Do not use during the initial transient time (3 sec. approx.)
after the power supply is switched on.

Avoid dust, dirt, and steam.

Take care that the sensor does not come in direct contact with
water, oil, grease, or organic solvents, such as, thinner, etc.

Do not insert wires, etc., into the pressure port. The
diaphragm will get damaged and correct operation shall not
be maintained.

Do not operate the keys with pointed or sharp objects.

Overcurrent due to short-circuit.

Pressure is being applied during
zero-point adjustment.

Applied pressure exceeds
the upper limit of displayable
pressure range.

Applied pressure exceeds the
lower limit (reverse pressure)
of displayable pressure range.

Applied pressure exceeds the
lower limit (reverse pressure)
of displayable pressure range.

Applied pressure exceeds
the upper limit of displayable 
pressure range.

Positive

pressure and

compound

pressure types

Error message

Cause

Corrective action

• 

The sensor should be connected less than 10 m 

32.808 ft

from the power supply.

Note: The EN 50082-2 that previously applied to the products for conforming

to EMC Directive was replaced by EN 61000-6-2 starting April 1st,
2002.

Error messages

When an error occurs, take the following corrective action.

Switch off the power 
supply and check the load.

Applied pressure at the
pressure port should be
brought to atmospheric
pressure and zero-point
adjustment should be
done again.

V

acuum

pressure

type

Positive

pressure and

compound

pressure types

V

a

cuum

pressure

type

Applied pressure
should be brought
within the rated
pressure range.

Summary of Contents for DP4 Series

Page 1: ...mm 60 mm 2 362 in 60 mm 2 362 in Snap fit connector is used for cable connection The cable has a snap fit connector for easy mounting and removal The connector can be easily assembled by yourself Fur...

Page 2: ...nd the ejector is not detected as an abnormal pressure 0 Pressure Set value Output Output Time 2 ms 16 ms 128 ms 512 ms 4 steps change over Response time At 2 ms At 128 ms Mountable from four differen...

Page 3: ...3 C5 DIN rail mounting bracket MS DP 2 Sensor mounting bracket MS DP 3 MS DP 4 Label space MS DP 5 Panel fixing screw Accessory Horizontal multiple panel mounting bracket MS DP 5 m The above illustrat...

Page 4: ...ent temperature range 0 to 50 C 32 to 122 F within 5 F S of detected pressure at 25 C 77 F M5 female thread Front case ABS LCD display PET Rear case PBT M5 threaded part Brass nickel plated Connector...

Page 5: ...agram Pin position Symbols D Reverse supply polarity protection diode ZD Surge absorption zener diode Tr PNP output transistor 1 3 2 ZD D 100 mA max Tr Terminal No Color code of connector attached cab...

Page 6: ...series is a CE conformity product complying with EMC Directive The harmonized standard with regard to immunity that applies to this product is EN 61000 6 2 Note and the following condition must be me...

Page 7: ...each time the key is pressed MODE MODE If key protect has been set make sure to release key protect before operating the keys Please refer to Key protect function on p 787 for the procedure Set Value...

Page 8: ...than forced output mode the mode will change to pressure value setting mode After releasing the mode select key press the key again continuously until is displayed 4 sec or more Make the setting for S...

Page 9: ...Further tighten both the right and the left screw gradually and equally so that the panel mounting bracket does not tilt 13 mm 0 512 in spanner M3 length 15 mm 0 591 in panel fixing screw Accessory Pa...

Page 10: ...2 362 37 1 457 17 0 669 0 5 0 0 020 0 0 5 0 0 020 0 37 1 457 0 5 0 0 020 0 X 0 5 0 0 020 0 X when n unit is installed X 20 n 1 17 mm 0 669 in Note The panel thickness should be 1 to 6 mm 0 039 to 0 23...

Page 11: ...559 Material Cold rolled carbon steel SPCC nickel plated Note Use with the panel mounting bracket MS DP 1 included with the sensor Material Cold rolled carbon steel SPCC nickel plated Note Use with th...

Page 12: ...ke sure that the tightening torque is 1N m or less If excessive tightening torque is applied the commercial fitting may break b I O CIRCUIT DIAGRAM Pin position Pin position NPN output type Horizontal...

Page 13: ...types Positive pressure and compound pressure types Corrective action Switch off the power supply and check the load Applied pressure at the pressure port should be brought to atmos pheric pressure a...

Page 14: ...g mode Zero point adjustment Sensing mode UP key DOWN key Release the keys Setting procedure Sensing mode Initial setting mode Setting item selection UP key MODE key UP key Setting condition selection...

Page 15: ...ctively i Press MODE key to enter Set Value 3 or Set Value 6 o Sensor returns to the sensing mode and setting is com pleted Setting procedure Sensing mode MODE key MODE key MODE key Sensing mode MODE...

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