From Sep 1st 2018, DP302 Series will be discontinued. As a possible substitute, please check out the DP20 series for details.
The DP302-O is a low-cost 3-1/2 digit (1999-count)
resistance meter with readout directly in ohms. Four
ranges are jumper-selectable: 19.99 Ω, 199.9 Ω,
1.999 kΩ, 19.99 kΩ. It is complete with low-level
current excitation and open-resistance indication.
The current source is tied to the reference of the A/D
converter for true ratiometric operation and immunity
to changes in line voltage.
STANDARD FEATURES
Electrical features include linearized analog output of
1 mV per count, which is ideal for driving a strip-chart
recorder. Mechanical features include a bright
14 mm (0.56") LED display, a screw-terminal barrier
strip for signal and power, and a compact 1/8 DIN
case that requires a depth of less than 104 mm (4.1")
behind the bezel.
OPTIONS
Options are isolated 9 to 32 Vdc or 26 to 56 Vdc
power, a PCB edge connector for display control and
output of +4.7 Vdc and -4.7
Vdc, and a splash-proof
lens cover which meets NEMA 4 (IP65) requirements.
SPECIFICATIONS Noise Rejection NMR: 70 dB, 50/60 Hz CMR, ANA GND to PWR GND: 120 dB to 60 Hz CMV, ANA GND to PWR GND: 1500 Vp per HV test, 354 Vp per IEC spacing
Power AC Voltages: 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: 3.7 W Output Voltages: 4.7 Vdc and -4.7 Vdc ±5%,10 mA max
Input Connection: 2-, 3- or 4-wire Excitation Current: 4 mA or 40 µA Resistance Break Indication: Meter displays overrange Overvoltage Protection: 25 Vp
Display Type: 7-segment, red LED Height: 14 mm (0.56") Symbols: 1.8.8.8 Decimal Points: Three positions programmable by jumpers or at connector
Overrange or Break Indication: Three least-significant digits blank
Accuracy At 25°C Span Tempco: ±0.01% of reading/°C Zero Tempco: ±1 m/°C (19.99 Ω and 199.9 Ω ranges), ±0.1 Ω/°C (1.999 kΩ and 19.99 kΩ ranges) Full-Scale Step Response: 1 s Warmup to Rated Accuracy: 10 min
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 Signal Integration Period: 100 ms Read Rate: 2.5/s
Analog Output (Linearized) Voltage: 1 mV/count Calibration Error: Same as given under accuracy Current: 1 mA maximum Source Resistance: 68 Ω
Digital Inputs Level: 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: 15 oz (425 g) Case Material: 94 V-0 UL-rated polycarbonate
† 所有金额以RMB显示
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选项说明:
(1)
Model 选项: DP302 for 3-1/2 digit ohmmeter
(2)
Input Range 选项: -OR1 for 0 to 19.99 ohm -OR2 for 0 to 199.9 ohm -OR3 for 0 to 1.999 kohm -OR4 for 0 to 19.99 kohm
(3)
Power options 选项: 无（选项为空白） for 115 Vac 50/60 Hz power -C1 for 230 Vac 50/60 Hz -C3C for Isolated 9 to 32 Vdc -C3E for Isolated 26 to 56 Vdc
(4)
Add-On Option 选项: 无（选项为空白） for red LED display -G for Green LED display
