DC Powered Digital Pressure
Gauge with Dual Alarms
DPG104
INSTRUCTION
SHEET
Shop online at omega.com e-mail: [email protected]
For latest product manuals: omegamanual.info
Introduction
DPG104 is an integrated pressure
gauge with display and control
used to monitor hydraulic fluids.
It monitors the pressure via the
resistance measured on an isolation
membrane. The output signal
is amplified by a high-precision,
low-temperature drift amplifier.
The signal is then fed into a high
accuracy A/D converter for the
microprocessor to process and then
show on the LED display.
This flexible, simple to operate
digital pressure guage is safe,
reliable, and easy to debug. The
DPG104 is widely used in hydro-
power, water, petroleum, chemical,
mechanical, hydraulic, and other
industries.
Features
• High resolution, 4-digit LED
display
• 100mm standard gauge dial
• 220V / 3A relay output
Specifications
Note, if the fluid being measured
exceeds 80ºC, select the high
temperature accessory.
• Measuring Range
-0.1~0~100MPa
• Accuracy Range
±0.25% for gauge
pressure >5psi
±0.5% FS for all others
including absolute,
compound gauge, and
Vacuum ranges
• Overload Pressure
150%~200%
• Pressure Type
A/G/D
• Stability
≤
0.1% FS per year
• Power Supply
13 to 30VDC
• Display
4 digits
• Screen Size
0.56”LED
• IP Rating
IP
40
• Relative Humidity
≤
90%
• Operating Tem
p
-30ºC ~ 80ºC
• Fluid Temp
-40ºC ~150ºC
• Response Time
< 30ms
• Thread Size
1/4 NPT Male
• Thread Material
SS316
• Output (S) model
4-
20mA
Dimensions
Mechanical Installation
Install directly on the hydraulic pipe
line. Other size connectors can be
ordered. In high vibration / shock
environments, pressure pipe joints
can be mechanically decoupled
through the use of hoses.
NOTE: Vertical installation is required
when the measuring range is less
than 100kPA
.
Electrical Installation
Notes to prevent Interference
• Keep connection as short as
possible
• Use shielded wire
• Avoid direct access to the wiring
of the user’s device or devices
causing interference.
• When using mini hoses, ground
the shell separately
Alarms
The DPG104’s are provided with two
SPDT relays that provide the user
the capability to have each alarm
have a normal acting(normally
closed) and reverse acting (normally
open) output.” As a fail safe in the
event of a sensor power down, the
normally closed relay output will
enable the alarm.
Operating Instructions
The programming menu uses the
following terms to describe the
various settings
• AL1H: Swtich 1 pull-on value
• AL1L: Switch 1 drop-out value
• AL2H: Switch 2 drop-in value
• AL2L: Switch 2 drop-out value
• FILt: Filter coefficeint to prevent
spurious pulses triggering switch
inputs
To make changes:
• Press SET button until LED
display says LOCK
• Press
▼
or
▲
to enter the
password (0001)
• Press SET to enter the selected
menu (AL1H, AL1L, AL2H, AL2L, FILt)
• Press
▼
or
▲
to change the value.
NOTE: If you press and hold the SET
button for 30 seconds while editing
the settings, you will exit Setup
mode and no changes will be saved.
M5703/
0
1
1
9
OUT + OUT -
RELAY 1
RELAY 2
POWER
+
-
AL1H
AL1F AL2H
AL2F
NOTE:
In order to offset the gauge
back to zero, press the middle button
for 5 seconds, then the display will be
back to zero.
