Signal Conditioning Module DI-8B47

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3~4 weken
SKU
DI-8B47

DI-8B47 Linearized Thermocouple Input Modules (Type J)

● Interfaces to Thermocouple Type J
● Linearizes Thermocouple Signal
● High Level Voltage Outputs
● 1500 Vrms Transformer Isolation
● ANSI/IEEE C37.90.1
● Input Protected to 240 VAC Continuous
● 120 dB CMR
● 70 dB NMR at 60 Hz
● Low Drift with Ambient Temperature
● Accurate CJC -40 °C ~ +85 °C
● CSA, FM, and CE Certifications Pending
● Mix and Match Modules

DI-8B modules are an optimal solution for monitoring real-world process signals and providing high level signals to a data acquisition system. Each DI-8B47 module isolates, filters, amplifies, and linearizes a single channel of temperature input from a thermocouple and provides an analog voltage output. Linearization is accomplished using a four breakpoint piecewise linear approximation. The DI-8B47 can interface to industry standard thermocouple type J, K, and T and has an output signal of 0V to +5V. Each module is cold-junction compensated to correct for parasitic thermocouples formed by the thermocouple wire and screw terminals on the mounting backpanel. Upscale open thermocouple detect is provided by an internal pull-up resistor. Signal filtering is accomplished with a three-pole filter optimized for time and frequency response which provides 70dB of normal-mode-rejection at 60Hz. One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other two are on the system side. A special input circuit on the DI-8B47 module provides protection against accidental connection of power-line voltages up to 240VAC. The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.
Meer informatie
Art.nr.
DI-8B47
Fabrikant
Dataq Instruments
Land van herkomst
Verenigde Staten
Input Range
0°C to +760°C (DI-8B47J-01)
-100°C to +300°C (DI-8B47J-02)
0°C to +500°C (DI-8B47J-03)
-100°C to +760°C (DI-8B47J-12)
0°C to +1000°C (DI-8B47K-04)
0°C to +500°C (DI-8B47K-05)
-100°C to +1350°C (DI-8B47K-13)
0°C to +1200°C (DI-8B47K-14)
-100°C to +400°C (DI-8B47T-06)
0°C to +200°C (DI-8B47T-07)
Bandwidth
-3dB 3Hz
Output Range
0 to +5V
Algemeen
Input Bias Current -25nA
Input Resistance
Normal 50MΩ
Power Off 200kΩ
Overload 200kΩ
Input Protection
Continuous 240VAC
Transient ANSI/IEEE C37.90.1
CMV, Input to Output 1500Vrms max
Transient, Input to Output ANSI/IEEE C37.90.1
CMR (50Hz or 60Hz) 120dB
NMR 70dB at 60Hz
Accuracy
±0.24% ±1.82°C (DI-8B47J-01)
±0.24% ±0.96°C (DI-8B47J-02)
±0.21% ±1.05°C (DI-8B47J-03)
±0.24% ±2.10°C (DI-8B47J-12)
±0.24% ±2.40°C (DI-8B47K-04)
±0.24% ±1.05°C (DI-8B47K-05)
±0.24% ±3.60°C (DI-8B47K-13)
±0.24% ±2.88°C (DI-8B47K-14)
±0.48% ±2.40°C (DI-8B47T-06)
±0.39% ±0.75°C (DI-8B47T-07)
Stability
Offset ±20ppm/ºC
Gain ±75ppm/ºC
Noise (Output, 100kHz) 250μVrms
Response Time, 90% Span 150ms
Output Protection (Transient) ANSI/IEEE C37.90.1 (Continuous Short to Ground)
Cold Junction Compensation
Accuracy, 25ºC ±1.25ºC
Accuracy, -40ºC to +85ºC ±8.30ºC
Power Supply Voltage +5VDC ±5%
Power Supply Current 30mA
Power Supply Sensitivity ±100ppm/%
Dimensions 28.1 x 41.9 x 10.2mm
Operating Temperature -40ºC to +85ºC
Storage Temperature -40ºC to +85ºC
Humidity 0 to 95% Noncondensing
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DI-8B Signaling Modules
Signal Conditioning Module DI-8B47
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