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330-668-1444Model DI-8B33-01
Isolated 100mV RMS 8B-style Amplifier
- Interfaces RMS Voltage (0-100mV)
- Designed For Standard Operation With Frequencies of 45Hz to 1kHz (Extended Range to 20kHz)
- Compatible With Standard Current and Potential Transformers
- ±0.25% Factory Calibrated Accuracy (Accuracy Class 0.2)
- 1500 VRMS Continuous Transformer Based Isolation
- Input Overload Protected to 480V Max (Peak AC and DC) or 10A RMS Continuous
- ANSI/IEEE C37.90.1-1989 Transient Protection
- Mix and Match Modules
- View Dimensions and pinout
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Description
Each DI-8B33 True RMS input module provides a single channel of AC input which is converted to its true RMS DC value, filtered, isolated, amplified, and converted to a standard process voltage or current output.
The field voltage or current input signal is processed through a pre-amplifier and RMS converter on the field side of the isolation barrier. The converted DC signal is then chopped by a proprietary chopper circuit and transferred across the transformer isolation barrier, suppressing transmission of common mode spikes and surges. The computer side circuitry reconstructs, filters, and converts the signal to an industry standard output of 0 to 5 VDC.
Special input circuits provide protection against accidental connection of power line voltages up to 300VAC and against transient events defined by ANSI/IEEE C37.90.1
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: | 0mV to 100mV RMS |
| Input Frequency Range: | Normal: 45Hz to 1KHz Extended: 1KHz to 10KHz |
| Impedance: | 499 KΩ ± 1 |
| Input Protection: | Continuous: 350Vrms Transient: ANSI/IEEE C37.90.1 |
| CMV, Input to Output: | 1500Vrms max |
| Transient, Input to Output, Input to Power: | ANSI/IEEE C37.90.1 |
| CMR (50Hz or 60Hz): | 120dB |
| NMR: | 70dB at 60Hz |
| Accuracy (5-100% span): Includes nonlinearity, hysteresis and repeatability but not source or external shunt accuracy. At standard 60Hz factory calibration. For 0-5% span measurements add 1.5% accuracy error. |
Sinusoid 50/60Hz: ±0.25% Span 45Hz to 1KHz: ±0.625% Span 1KHz to 10KHz: ±1.375% Span, ±3.25% Span (-06) Non-Sinusoid Crest Factor = 1: ±0.25% Span Crest Factor = 2: ±0.325% Span Crest Factor = 3: ±0.475% Span Crest Factor = 4: ±0.7% Span Vs. Temperature: ±100ppm/°C |
| Response Time, 90% Span: | <120ms |
| Output Range: | 0 to +5V |
| Output Voltage Limit: | ± 9V |
| Output Ripple and Noise: | 0.0375% Span rms |
| Output Protection: | Transient: Continuous Short to Ground ANSI/IEEE C37.90.1 |
| Power Supply Voltage: | +5VDC ±5% |
| Power Supply Current: | 30mA |
| Power Supply Sensitivity: | ±200ppm/% |
| 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
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