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⁄8 DIN High-Accuracy True RMS
Scalable Indicator
For AC Sinusoidal and
Non-Sinusoidal Signals
DP25-RMS
Starts at
$
360
⻬ AC Voltage and
Current Inputs
⻬ High 0.1% of
Reading Accuracy
⻬ 4-Digit, 14-Segment LED
Display—Red or Green
⻬
Exceptional Noise Rejection
⻬ Peak and Valley
RMS Levels
⻬
Front-Panel Configuration
⻬ Optional Dual 5 A
Relays, Analog Output,
and RS232/RS485
⻬
NEMA 4 Front Bezel
The DP25-RMS Series digital
panel meter features high accuracy,
4 digits, and AC and true-RMS scalable
inputs. The 4-digit, 14-segment
alphanumeric display ensures easy
reading and reconfiguration. This
meter uses an integrated circuit that
computes the true root-mean-square
value of complex input signals. AC
voltage measurements with a
frequency of 25 Hz to 5 kHz can
be measured.
The DP25-RMS can capture and
display both peak and valley rms
levels of input signals. A dual 5 A relay
is available and can be configured to
provide on/off control. An isolated
analog output, which can be
configured for 4 to 20 mA or 0 to 10 Vdc,
is also available, as is RS232 and
RS485 communication. True rms AC
input makes this meter ideal for power
monitoring, piezoelectric sensors,
signal conditioning, and many
other applications.
Specifications
Accuracy
Max Error, AC Coupling: ±(0.1% rdg
±10 counts) at 50 or 60 Hz; ±(0.1% rdg
±40 counts) from 40 Hz to 3 kHz
Max Error, DC Coupling: ±(0.1% rdg
±10 counts) at 50 or 60 Hz; ±(0.1% rdg
±30 counts) from 40 Hz to 3 kHz
Panel Punches
Available, Visit
omega.com/
panelpunches
DP25-VRMS, $360, with ACC104A
accelerometer, $425, shown
Input Range:
DP25-VRMS: 0 to 0.1V, 0 to 1V,
0 to 10V, 0 to 100V, 0 to 750V
DP25-CRMS: 0 to 1 mA, 0 to 10 mA,
0 to 100 mA, 0 to 1 A, 0 to 5 A
Display Type: 14-segment, red LED
Display Digits: 4 digits (-1999 to 9999)
Digit Height: 14.2 mm (0.56")
Conversion Rate: 2.5/s
Operating Temperature: 0 to 60°C
(32 to 140°F)
Storage Temperature: -40 to 85°C
(-40 to 185°F)
Span Temperature Coefficient:
±200 ppm/°C typical
Warm-Up Time: 30 min
smaller than actual size. Visit
omega.com/acc104a for details.
Humidity: Up to 90%
non-condensing @ <40°C
Noise Rejection: CMR, 100 dB;
CMV, 1500 Vp
Input Connection: Screw terminals
Power Requirement: 115 or 230 Vac
±10% between 49 and 100 Hz
Power Consumption: 10 W max
Bezel: 96 W x 48 H x 20 mm D
(3.78 x 1.89 x 0.80")
Panel Cutout: 45 H x 92 mm W
(1.77 x 3.62")
Weight: 0.56 kg (1.25 lb)
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Input Range
DP25-VRMS $360 0 to 100 mV, 0 to 1V, 0 to 10V, 0 to 100V, 0 to 750V
DP25-CRMS 360 0 to 1 mA, 0 to 10 mA, 0 to 100 mA, 0 to 1 A, 0 to 5 A
Note: Individual ranges are DIP-switch settable. The meter comes factory set at the highest range.
Options
Suffix Code Price Description
Control/Analog Output
-GN N/C Green LED display
-230 N/C 230 Vac power
-R $70 Dual 6 A relays
-A 80 Scalable analog output
Computer Communications
-S2 $110 Isolated RS232 serial output
-S4 110 Isolated RS485 serial output
The -S2 and -S4 options include 1.8 m (6') communications cable with phone plug termination.
For proper termination to a computer, 9-pin and 25-pin connectors are offered below.
Accessories
Model No. Price Input Range
DP40-9SC2 $30 9-pin serial connector for RS232
DP40-9SC4 30 9-pin serial connector for RS485
DP40-25SC2 30 25-pin serial connector for RS232
DP40-25SC4 30 25-pin serial connector for RS485
Comes complete with operator’s manual.
Ordering Example: DP25-VRMS-S2A, DP25 unit for true rms voltage input, isolated analog output,
RS232 communications, 115 Vac, and DP40-9SC2, 9-pin serial connector, $360 + 110 + 80 + 30 = $580.
Recommended Reference Book: Analog Signal Processing,
EE-2560, $180. Visit omega.com/bobi for Additional Books.
M-60
M
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