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3-1-2 Digit Thermocouple Meters- 1-8 DIN
DP302-J, -K, -T
PLACE ORDER - J, K or T Thermocouple Input
- 1° or 0.1° Resolution
- °C or °F, Jumper- Selectable
- 0.05 Deg/Deg Cold- Junction Error
- Five-Segment Linearization
- 1 mV/deg Linearized Recorder Output
- 120 dB CMR, 70 dB NMR
- Bright, 14.2 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-J, -K and -T are 3-1/2 digit (±1999 count)panel meters for thermocouple types J, K and T.They are available for display in °C or °F andresolution of 1° up to 1999° or 0.1° up to 199.9°. Theyare recommended for demanding indication-onlyapplications where exceptionally low-cost is required.For display up to 1999.9° with 0.1° resolution,trodeks®. recommends its DP3002 Seriesmeters, which provides a 4-1/2 digit (±19,999 count)main assembly.
STANDARD FEATURES
The DP302 Series thermocouple meters provideexceptional accuracy, as made possible by fivesegmentlinearization and use of matched, gradedcomponents for each T/C type. Electrical featuresinclude cold-junction compensation and jumperselection of °C or °F. A 1 mV per count linearizedanalog output is standard and is ideal for driving astrip-chart recorder.
Mechanical features include a bright 14.2 mm (0.56")display, a screw-terminal barrier strip for signal andpower, and a compact 1/8 DIN case that requires less
Electrical features include cold-junction compensation,jumper selection of °C or °F, and a linearized recorderoutput of 1 mV per degree.
OPTIONS
Options are isolated 9 to 32 Vdc or 26 to 56 Vdcpower, a PCB edge connector for display control andoutput of 4.7 Vdc and -4.7 Vdc, and a splash-prooflens cover which meets NEMA 4 (IP65) requirements.
SPECIFICATIONS
Input
Thermocouple:
Type J: (Iron-Constantan, Fe-CuNi)
Type K: (Chromel-Alumel, NiCr-NiAl)
Type T: (Copper-Constantan, Cu-CuNi)
Calibration: IEC 584-1 (IPTS-68)
Configuration: Single-ended (-TC lead connected to ANA GND)
Polarity: Bipolar
Zero: Adjustable ±20°C ( ±36°F)
Cold-Junction Tempco: ±0.05 deg/deg
Sensor-Wire Resistance Effect Per Conductor:
Type J: 40 µdeg/deg/Ω, up to 2500 Ω
Type K: 50 µdeg/deg/O, up to 2000 Ω
Type T: 50 µdeg/deg/O, up to 2000 Ω
Sensor-Break Current: 300 nA
Sensor-Break Indication: Meter displays positive overrange (upscale)
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
Digital Inputs
Level: TTL or 5 V CMOS compatible
Accuracy at 25°C (1° resolution models)
Range for Rated Accuracy:
Type J: - 138 to 760°C (- 216 to 1400°F)
Type K: - 105 to 1248°C (- 157 to 1999°F)
Type T: - 112 to 400°C (- 170 to 752°F)
Maximum Error: ±1.5°C (±2.7°F) ±1/2 count
Span Tempco: ±0.01% of reading/°C
Resolution: 0.1°C or 0.1°F (jumper-selectable)
Full-Scale Step Response: 1 s
Warmup to Rated Accuracy: 10 min
Accuracy at 25°C (0.1° resolution models)
Range for Rated Accuracy, all T/C Types: - 105.0 to 199.9°C (- 157.0 to 199.9°F)
Maximum Error: ±1.0°C (±1.8°F) ±1/2count
Span Tempco: ±0.01% of reading/°C
Resolution: 0.1°C or 0.1°F (jumper-selectable)
Full-Scale Step Response: 1 s
Warmup to Rated Accuracy: 20 min
Analog Output (Linearized)
Voltage: 1 mV/count
Calibration Error: ±1.5 mV on °C, ±2.7 mV on °F
Current: 1 mA max
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
Overrange Indication: Three leastsignificant digits blank
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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