The DP3002-M is a low-cost 4-1/2 digit
(±19,999 count) temperature indicator for use with
platinum 100 RTD’s with alpha of 0.00385. It is
complete with 1 mA sensor excitation, sensor-break
detection, and platinum curve linearization. Resolution
is 0.1°. Readout can be in °C or °F, as selected by
push-on jumpers. The electrical connection can be by
2-, 3-, or 4-wires. High accuracy is provided by positive
current feedback and matched, graded components.
STANDARD FEATURES
Mechanical features include a bright 14 mm (0.56")
display, a screw-terminal barrier strip for signal and
power, and a compact 1/8 DIN case that requires
less than 104 mm (4.1") behind the panel. Electrical
features include jumper selection of °C or °F, a
linearized recorder output of 1 mV per degree, and
1 mA current excitation. The current source is tied to
the reference of the A/D converter for true ratiometric
operation and immunity to changes in line voltage.
OPTIONS
Power options include isolated 9 to 32 Vdc and
26 to 56 Vdc. A splash-proof lens cover which meets
NEMA 4 (IP65) requirements allows the DP3002 to be
used in harsh industrial environments.
SPECIFICATIONS Analog Input RTD Type: 100 Ω platinum with alpha of 0.00385 Calibration: IEC 751 (IPTS-68) Configuration: 2-, 3-or 4-wire connection Polarity:Bipolar Zero: Adjustable ±20°C (±36°F) Zero Tempco: ±0.05 deg/deg Sensor-Wire Resistance Tempco
Effect Per Conductor: 2-wire: 20 mdeg/Ω/deg, up to 3.8 Ω 3-wire: 50 µdeg/Ω/deg, up to 100 Ω 4-wire: 5.0 µdeg/Ω/deg, up to 100 Ω Sensor-Excitation Current: 1 mA Sensor-Break Indication: Meter displays overrange Overvoltage Protection: 25 Vp
Noise Rejection NMR, SIG HI to SIG LO: 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 IEC spacing.
Analog Output (Linearized) Voltage: 1 mV/deg Calibration Error: Same as given under accuracy Current: 1 mA maximum Source Resistance: 68 Ω Analog-to-Digital Conversion Technique: Dual-slope, average value Signal Integration Period: 100 ms Read Rate: 2.5/s
Display Type: 7-segment, red LED Height: 14 mm (0.56") Symbols: -1.8.8.8.8 Decimal Points: Four positions, programmable by jumpers behind lens or at connector Overrange Indication: Four least-significant digits flash
Accuracy at 25°C Span Tempco: ±0.005% R/°C on all models plus ±0.05°C/°C for -RC from -200 to -130°C Celsius/Fahrenheit: Jumper-selectable Full-Scale Step Response: 1 s Warmup to Rated Accuracy: 20 min
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 to 300 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
Environmental Operating Temperature: 0 to 60°C Storage Temperature: -40 to 85°C Relative Humidity: 95% at 40°C (non-condensing)
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: 94V-0 UL-rated polycarbonate
† All dollar amounts on this site are shown in US currency.
