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3-1-2 Digit (Pt100) RTD Meters- 1-8 DIN
DP302-M, -R
PLACE ORDER - Platinum 100 O RTD Input
- 1 mA Excitation Current
- 2-, 3- or 4-Wire Connection
- -200 to 820°C in 1°C Steps (-M)
- -199.9 to 199.9°C in 0.1°C Steps (-R)
- °C or °F, Jumper-Selectable
- Platinum Curve Linearization
- 120 dB CMR, 70 dB NMR
- 1 or 10 mV/deg Linearized Recorder 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
- Isolated 9 to 32 Vdc Power or 26 to 56 Vdc Power
- NEMA 4 (IP65) Splash-Proof Lens Cover
Description
Description
The DP302-M and -R are low-cost 3-1/2 digit (±1999count) temperature indicators for use with platinum100 O RTD’s with alpha of 0.00385. They are completewith 1 mA sensor excitation, sensor-break detection,and platinum curve linearization. Resolution is 1° (-M)or 0.1° (-R). Readout can be in °C or °F, as selected bypush-on jumpers. The electrical connection can be by2-, 3-, or 4-wires. High accuracy is provided by positivecurrent feedback and matched, graded components.
STANDARD FEATURES
Mechanical features include a bright 14 mm (0.56")display, a screw-terminal barrier strip for signal andpower, and a compact 1/8 DIN case that requiresless than 104 mm (4.1") behind the panel. Electricalfeatures include jumper selection of °C or °F, alinearized recorder output of 1 or 10 mV per degree,and 1 mA current excitation. The current source istied to the reference of the A/D converter for trueratiometric operation and immunity to changes inline voltage.
OPTIONS
Options are isolated 9 to 32 Vdc or 26 to 56 Vdcpower, a PCB edge connector for display controland output of 4.7 Vdc and -4.7 Vdc power, and asplash-proof lens cover which meets NEMA 4 (IP65)requirements.
SPECIFICATIONS
Input
RTD Type: 100-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 degree/degree (-M), ±0.01 degree/ degree (-R) 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 POWER GND: 120 dB DC to 60 Hz
CMV, ANA GND to ANA GND: 1500 Vp per HV test, 354 Vp per IEC spacing
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: Jumperselectable
Full-Scale Step Response: 1 s
Warmup to Rated Accuracy: 10 min
Analog Output (Linearized)
Voltage: 1 mV/deg (-M); 10 mV/deg (-R)
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: 14.2 mm (0.56")
Symbols: -1.8.8.8
Decimal Points: XXXX (-M); XXX. X (-R)
Overrange Indication: Three leastsignificant digits blank
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
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 Anemometer | Automation | Accelerometers | Calibrator | Cartridge Heaters | Chart Recorders | Cryogenics | Custom Pressure Transducers | Data Loggers | Data Acquisition | Dial Thermometers | Fiber Optics | Fiber Optic Temperature Measurement | Flexible Heaters | Flow Meters | Glass Bulb Thermometers | Grippers | Heaters | Humidity Measurement | Integrated Circuit Sensors | Immersion Heaters | Infrared Thermometers | Level Measurement | Load Cells | M12 Temperature Connectors | Magnetic Flow Meter | Panel Meter | PID Controllers | pH meter | Pressure Gauges | Pressure Transducers | Pressure Transmitters | Rotameters | RTD | Remote Process Monitoring | Sanitary Sensors | Signal Conditioners | Stepper Motors | Strain Gages | Strip Heaters | Temperature Controllers | Temperature Labels | Temperature Measurement | Temperature Sensor Manufacturing | Temperature Sensors | Temperature Transmitters | Thermal Imagers | Thermistors | Thermocouple | Thermocouple Wire | Thermowell | Ultrasonic Flow Meters | Vortex Flow Meter | Wireless Sensors
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