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OPTIONS ![]() ![]() Models 202A-J, -K and -T are 3 1/2 digit ±1,999 count) panel meters for thermocouple types J, K and T. They are available for display in °C or °F and resolution of 1° up to 1,999° or 0.1° up to 199.9°. They are recommended for demanding indication-only applications where exceptionally low-cost is required. For display up to 1,999.9° with 0.1° resolution, Newport recommends its 2002A Series meters, which provides a 4 1/2 digit (±19,999 count) main assembly. STANDARD FEATURES Newport's 202A Series thermocouple meters provide exceptional accuracy, as made possible by five-segment linearization and use of matched, graded components for each T/C type. Electrical features include cold-junction compen-sation and jumper selection of °C or °F. A 1 mV per count linearized analog output is standard and is ideal for driving a strip-chart recorder. Mechanical features include a bright 0.56 in (14.2 mm) display, a screw-terminal barrier strip for signal and power, and a compact 1/8 DIN case that requires less than 4.1 in (104 mm) behind the panel. STANDARD FEATURES Mechanical features include a bright 0.56 in (14.2 mm) display, a screw-terminal barrier strip for signal and power, and a compact 1/8 DIN case that requires less than 4.1 in (104 mm) behind the panel. Electrical features include cold-junction compensation, jumper selection of °C or °F, and a linearized recorder output of 1 mV per degree. OPTIONS Options are isolated 9-32 V dc or 26-56 V dc 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 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/ohm, up to 2500 ohm Type K: 50 µdeg/deg/ohm, up to 2000 ohm Type T: 50 µdeg/deg/ohm, up to 2000 ohm Sensor-break current: 300 nA Sensor-break indication: Meter dispalys 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 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) ±1/2 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: 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 ohm 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: 0.56 in (14.2 mm) Symbols: 1.8.8.8 Overrange indication: Three least-significant digits blank DIGITAL INPUTS Level: TTL or 5 V CMOS compatible POWER AC voltages: 115 or 230 V ac, ±15% AC frequency: 49-440 Hz DC voltages: 9-32 V dc, isolated to 300 Vp; 26-56 V dc, isolated to 300 Vp Power consumption: 3.7 W Output voltages: +4.7 V dc and 4.7 V dc ±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 Dimensions: Newport DIN2A (short 1/8 DIN case) (see Mechanical section for drawings) Weight: 15 oz (425 g) Case material: 94V-0 UL-rated polycarbonate HOME / PRODUCT GUIDE / TECHNICAL REFERENCE NEWPORT Electronics, Inc. (714) 540-4914 or Contact Us Copyright 1999, Newport Electronics, Inc. All rights reserved. |