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LOW COST, 3½ DIGIT VOLTMETERS
¹⁄8 DIN
DP301AN
U ±1999 Count Display Span
U ±200 mV to ±200 Vdc
Ranges
U True-Differential Input
with 80 dB CMR
U 3-Wire Ratio Input
U Bright, 14 mm (0.56") LED
Display
U Automatic Zero and Polarity
U Display Hold and Test
U 115/230 Vac Power
U ¹⁄₈ DIN Case
DP301AN-5 shown
actual size.
INSTRUMENTATION
Options
U Isolated 9 to 32 Vdc Power
U Isolated 26 to 56 Vdc Power
U Screw-Terminal Barrier Strip
U NEMA 4 (IP65) Splash-Proof Lens
Cover
The DP301AN is a low-cost 3½ digit DC voltmeter. It
fits in a standard ¹⁄₈ DIN panel cutout and requires a
depth of less than 104 mm (4.1") behind the panel.
With the addition of a screw-terminal barrier strip, it
becomes a low-cost, pin-compatible alternative to the
DP2000A and DP2000B in applications where
indication-only is required.
INPUT RANGES
The DP301AN offer voltage ranges of ±0.1999V,
±1.999V, ±19.99V and ±199.9 Vdc. The input is
true-differential, with excellent common-mode noise
rejection (CMR). By using an external DC voltage
reference, any of these ranges can further be
configured for 3-wire ratio measurement with readout
from 0 to 1.999.
OPTIONS
The DP301AN can be configured for four voltage
input ranges, three decimal-point positions, and highimpedance 3-wire ratio input. Mechanical options
include a screw-terminal barrier strip for signal and
power and a splash-proof lens cover which meets
NEMA 4 (IP65) standards.
SPECIFICATIONS
Noise Rejection
NMR: 56 dB, 50/60 Hz
CMR, AC GND to SIG GND: 120 dB, DC to 60 Hz
CMR, SIG LO to SIG GND: 80 dB, DC to 60 Hz
CMV, AC GND to SIG GND: 1500 Vp per HV test,
354 Vp per IEC spacing
CMV, SIG LO to SIG GND: ±1 Vp
Power
AC Voltage: 115 or 230 Vac, ±15%
AC Frequency: 49 to 440 Hz
DC Voltages: 9 to 32 Vdc, isolated to 300 Vp; 26 to 56 Vdc,
isolated to 300 Vp
Power Consumption: 2.4 W (nominal)
Output Voltages: 4.7 Vdc and - 4.6 Vdc ±5%, 10 mA max
Display
Type: 7-segment, red LED
Height: 14 mm (0.56")
Symbols: -1.8.8.8
Decimal Points: Three positions programmable internally or
at connector
Overrange Indication: Three least-significant digits blank
Environmental
Operating Temperature: 0 to 60°C
Storage Temperature: -40 to 85°C
Relative Humidity: 95% at 40°C (non-condensing)
Analog-To-Digital Conversion
Technique: Dual-slope, average-value
Polarity: Automatic
Signal integration period: 100 ms
D-1
D
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Signals
HOLD and TEST Inputs: TTL or 5V
CMOS compatible
Mechanical
Bezel: 96 W x 48 H x 5.1 mm D
(3.78 x 1.89 x 0.20")
Depth Behind Bezel: 104 mm (4.09")
Panel Cutout: 92 W x 45 mm H
(3.62 x 1.77")
Weight: 14 oz (400 g)
Case Material: 94V-0 UL-rated
polycarbonate
Analog Input
MAXIMUM
RANGE
±199.9 mV 100 µV 130 Vp 1 GΩ 50 pA
±1.999V 1 mV 130 Vp 1 GΩ 50 pA
±19.99V 10 mV 250 Vp 1.1 MΩ 5 pA
±199.9V 100 mV 250 Vp 1.0 MΩ 1 pA
RESOLUTION
INPUT
INPUT
RESISTANCE
Accuracy at 25°C
Maximum Error: ±0.05% of reading
±1 count
Span Tempco: ±0.01% of reading/°C
Step Response: 1 s
Warmup to Rated Accuracy: 10 min
Input Configuration
Configuration: Differential, bipolar
Zero: Automatic
Span Adjustment: ±5%
3-Wire Ratio Reference
ANALOG
INPUT RANGE
±200 mV +0.05 to +0.2V 30.6 kΩ 100 MΩ 99.9%
±2, ±20, ±200V
EXTERNAL
REFERENCE
INPUT
+0.5 to +2.0V 65.3 kΩ 100 MΩ 99.9%
LOAD ON
REFERENCE
STD
LOAD ON
REFERENCE
OPT
To Order Visit omega.com/dp301a-an for Pricing and Details
MODEL NO. DESCRIPTION
DP301AN
-2
-3
-4
-5
*
-HZ
*
-DP1
-DP2
-DP3
*
-C1
-C3C
-C3E
*
-G
NOTE: All combinations may not be valid, check online for valid part numbers.
Ordering Examples: DP301AN-2-D4, for 3½ digit DC voltmeter, with ±199.9 mVdc, screw terminal barrier strip.
3½ digit voltmeter
±199.9 mVdc
±1.999 Vdc
±19.99 Vdc
±199.9 Vdc
(Nothing, leave field blank) standard 3-wire ratio input impedance
High impedance (100 MΩ)
(Nothing, leave field blank). Decimal point programmable at
D1 connector
1.999, internally-wired
19.99, internally-wired
199.9, internally-wired
(Nothing, leave field blank) 115 Vac, 50/60 Hz power
230 Vac, 50/60 Hz
Isolated 9 to 32 Vdc
Isolated 26 to 56 Vdc
(Nothing, leave field blank) red LED display
Green LED display
*
(Nothing, leave field blank) no option
-D4
Screw-terminal barrier strip for power and signal (removes power and
signal from D1). D4 option required for CE
BIAS
CURRENT
ACCURACY
D-2
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