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330-668-1444Model DI-8B31-07
Isolated ±20V 8B-style Amplifier
- -20V to +20V input range
- 3Hz Bandwidth
- High Level Voltage Outputs
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected up to 240VAC Continuous
- 120dB CMR
- 85dB NMR at 60Hz
- ±0.05% Accuracy
- ±0.02% Linearity
- Low Drift with Ambient Temperature
- CSA, FM and CE Certifications Pending
- Mix and Match Modules
- View Dimensions and pinout
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Description
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-8B30 or DI8B31 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-8B30 and 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 +5VDC, ±5%.
The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.
Accessories
Description
2-position analog I/O backplane, non-multiplexed. For use with DI-8B Modules. View the 8BP02 schematic or the 8BPxx schematic or download the pdf.
Description
4 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP04 schematic or the 8BPxx schematic or download the pdf.
Description
8 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP08 schematic or the 8BPxx schematic or download the pdf.
Description
16 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP16 schematic or the 8BPxx schematic or download the pdf.
Description
5V DC Power Supply for use with both DI-5B and DI-8B Backplanes.
Specifications
| Input Range: | ±20V |
| Input Bias Current: | ±0.5nA |
| Input Resistance: | 500kΩ (minimum) |
| Input Protection: | Continuous: 240VAC (8B30-01: 120VAC) Transient: ANSI/IEEE C37.90.1 |
| 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 (Includes nonlinearity, hysteresis and repeatability) |
| Nonlinearity: | ±0.02% Span |
| Stability: | Offset: ±10ppm/ºC Gain: ±75ppm/ºC |
| Noise: | Output, 100kHz: 250µVrms |
| Bandwidth, -3dB: | 3Hz |
| Response Time, 90% Span: | 160ms |
| Output Range: | ±5V |
| Output Protection: | Transient: Continuous Short to Ground ANSI/IEEE C37.90.1 |
| Power Supply Voltage: | +5VDC ±5% |
| Power Supply Current: | 25mA |
| Power Supply Sensitivity: | ±25ppm/% |
| Mechanical Dimensions: | 1.11" × 1.65" × 0.40" (28.1mm × 41.9mm × 10.2mm) |
| Operating Temperature: | -40ºC to +85ºC |
| Storage Temperature: | -40ºC to +85ºC |
| Relative Humidity: | 0 to 95% Noncondensing |
Articles
Learn the Importance of Isolation In Four Easy Lessons
Bandwidth and DI-8B/DI-5B Series Signal Conditioning Modules
