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4-1-2 Digit Ohmmeter- 1-8 DIN
DP3002-O
PLACE ORDER - 19,999 Count Display Span
- 19.999 Ω to 19.999 kΩ Ranges
- 2-, 3- or 4-Wire Connection
- 120 dB CMR, 70 dB NMR
- 0.1 mV/ Count Linearized Analog Output
- Bright, 14 mm (0.56") LED Display
- Display Hold and Test
- 115/230 Vac Power
- EMI/RFI Filter for AC Power
- Screw-Terminal Barrier Strip
- Short 104 mm (4.1") Deep ¹/8 DIN Case
Options - Serial BCD Output
- Isolated 9 to 32 Vdc or 26 to 56 Vdc Power
- NEMA 4 (IP65) Splash-Proof Lens Cover
Description
Description
The DP3002-O is a low-cost, high-resolution 4-1/2 digit(19,999-count) resistance meter with readout directlyin ohms. Four ranges are jumper-selectable: 19.999 Ω,199.99 Ω, 1.9999 kΩ, 19.999 kΩ. It is complete withlow-level current excitation and open-resistanceindication. The current source is tied to the referenceof the A/D converter for true ratiometric operation andimmunity to changes in line voltage.
STANDARD FEATURES
Electrical features include linearized analog output of0.1 mV per count, which is ideal for driving a strip-chartrecorder. Mechanical features include a bright14 mm (0.56") LED display, a screw-terminal barrier stripfor signal and power, and a compact 1/8 DIN case thatrequires a depth of less than 104 mm (4.1") behindthe bezel.
OPTIONS
Power options include isolated 9 to 32 Vdc and 26 to56 Vdc. Other options are a PCB edge connector fordisplay control and output of +4.7 Vdc and -4.7Vdc, and a splash-proof lens cover which meets NEMA 4(IP65) requirements.
SPECIFICATIONS
Noise Rejection
NMR, SIG HI to SIG LOW: 70 dB,50/60 Hz
CMR, ANA GND to PWR GND:120 dB, DC to 60 Hz
CMV, ANA GND to PWR GND:1500 Vp per HV test, 354 Vp per IECspacing
Environmental
Operating Temperature: 0 to 60°C
Storage Temperature: -40 to 85°C
Relative Humidity: 95% at 40°C(non-condensing)
Display
Type: 7-segment, red LED
Height: 14 mm (0.56")
Symbols: 1.8.8.8.8
Decimal Points: Four positionsprogrammable by jumpers behind thelens or connector
Overrange or Break Indication: Fourleast-significant digits flash
Input
Connection: 2-, 3- or 4-wire
Excitation Current: 4 mA or 40 µA
Resistance Break Indication: Meterdisplays overrange
Overvoltage Protection: 25 Vp
Accuracy at 25°C
Zero Tempco: ±1 MΩ/°C (19.999 Ω &199.99 Ω ranges),±0.1 Ω/°C (1.9999 kΩ & 19.999 kΩranges)
Span Tempco: ±0.005% of reading/°C
Full-Scale Step Response: 1 s
Warmup to Rated Accuracy: 20 min
Analog-to-Digital Conversion
Technique: Dual-slope, average value
Signal Integration Period: 100 ms
Read Rate: 2.5/s
Digital Inputs
Level: TTL or 5V CMOS compatible
Power
AC Voltages: 115 or 230 Vac, ±15%
AC Frequency: 49 to 440 Hz
DC Voltages: 9 to 32 Vdc, isolated to300 Vp; 26 to 56 Vdc, isolated to 300 Vp
Power Consumption: 3.7 W nominal
Output Voltages: 4.7 Vdc and -4.7 Vdc ±5%,10 mA max
Analog Output (Linearized)
Voltage: 0.1 mV/count
Calibration Error: Same as givenunder accuracy
Current: 1 mA maximum
Source Resistance: 68 Ω
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: 15 oz (425 g)
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