Signal Conditioning Module DI-8B31
DI-8B31 Analog Voltage Input Module 3 Hz Bandwidth (±1 V ~ ±60 V Input Range)
● Accepts Millivolt Level Signals
● High Level Voltage Outputs
● 1500 Vrms Transformer Isolation
● ANSI/IEEE C37.90.1 Transient Protection
● Input Protected up to 240 VAC Continuous
● 120 dB CMR
● 85 dB NMR at 60 Hz
● ±0.05% Accuracy
● ±0.02% Linearity
● Low Drift with Ambient Temperature
● 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-8B31 module isolates, filters and amplifies a voltage input signal and provides an analog voltage output.
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-8B31 modules provides protection against accidental connection of power-line voltages up to 240VAC.
Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is powered from +5 VDC, ±5%.
The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.
-5V to +5V (DI-8B31-02)
-10V to +10V (DI-8B31-03)
-20V to +20V (DI-8B31-07)
-40V to +40V (DI-8B31-09)
-60V to +60V (DI-8B31-12)
| -3dB | 3Hz |
| Input Bias Current | ±0.5nA | ||||||
| Input Resistance |
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| Input Protection |
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| CMV, Input to Output | 1500Vrms | ||||||
| Transient, Input to Output | ANSI/IEEE C37.90.1 | ||||||
| CMR (50Hz or 60Hz) | 120dB | ||||||
| NMR | 85dB at 60Hz | ||||||
| Accuracy* | ±0.05% Span | ||||||
| Nonlinearity | ±0.02% Span | ||||||
| Stability |
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| Noise (Output, 100kHz) | 250μVrms | ||||||
| Response Time, 90% Span | 160ms | ||||||
| Output Protection (Transient) | ANSI/IEEE C37.90.1 (Continuous Short to Ground) | ||||||
| Power Supply Voltage | +5VDC ±5% | ||||||
| Power Supply Current | 25mA | ||||||
| Power Supply Sensitivity | ±25ppm/% | ||||||
| Dimensions | 28.1 x 41.9 x 10.2mm | ||||||
| Operating Temperature | -40ºC to +85ºC | ||||||
| Storage Temperature | -40ºC to +85ºC | ||||||
| Humidity | 0 to 95% Noncondensing | ||||||
| *Includes nonlinearity, hysteresis and repeatability. | |||||||
