The 8B33-02 is an isolated True RMS input module that converts a 0V to 1V AC input to a 0V to 5VDC process output. It features 1500Vrms transformer isolation, 120dB CMR, and input overload protection up to 350Vrms. The module operates with 45Hz to 1000Hz input frequencies, has an accuracy of ±0.25% Span at 50/60Hz, and meets ANSI/IEEE C37.90.1 transient protection standards. It is packaged in a 1.11" x 1.65" x 0.40" module and is UL/cUL listed and CE compliant. Input impedance is 499kΩ.
Each 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 output (see Block Diagram).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 5VDC.Special input circuits provide protection against accidental connection of power line voltages up to 350VAC and against transient events defined by ANSI/IEEE C37.90.1.
| Dataforth Corporation | |
|---|---|
| Product Category | Data Acquisition |
| Product Number | 8B-33-02 |
| Product Name | Isolated True RMS Input Modules |
| Data Acquisition | Input Module |
| Form Factor | Backpanel |
| Outputs | Analog Voltage Output |
| User Interface | None |
| Application | General Lab & Industrial |
