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SensorLex8B33

True RMS Input Modules with Voltage- or Current-Output

SensorLex8B33 image

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.

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 350 VAC and against transient events defined by ANSI/IEEE C37.90.1.

Circuit diagram Dataforth SensorLex8B33

Block Diagram SensorLex8B33



PDF Downloads:

  • Product Overview SensorLex8B
  • Produkt Catalog SensorLex8B
  • Backpanels and Accessories

  • 6 Modules for Type SensorLex8B33:

    ModuleInputDescription
    8B33-02 0 V to 1 V SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output
    8B33-03 0 V to +10 V SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output
    8B33-04 0 V to + 150 V SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output
    8B33-06 0 A to 1 A SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output
    8B33-05 0 V to +300 V SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output
    8B33-01 0 mV to + 100 mV SensorLex8B33 Isolated True RMS Input Module with Voltage- or Current-Output

    Specifications

    top
    • Input: RMS Voltage (0 - 300V) or RMS Current (0-5A)
    • Output: 0...5V / 0...10V / 0...1mA / 0...20mA / 4...20mA
    • Standard Frequency 45 Hz to 1 kHz, expanded to 10 kHz
    • Isolation 1500 Vrms
    • Input protection 350 Vrms, 5 Arms or 10 Arms
    • Input Resistance up to 499 kOhm or 0.1 Ohm or 0,025 Ohm
    • Calibrated Accuracy ± 0.25% (Accuracy class 0.2)
    • Input protection up to 480V (Peak AC & DC) or 10 Arms
    • ANSI/IEEE C37.90.1 Input protection
    • CMR 100dB
    • True 2-way isolation
    • Response Time < 400 ms
    • Power Supply +5 VDC
    • Operating Temperature Range -40°C … +85°C
    • Mix and Match Types on Backpanels possible
    • Dimensions 28.1 x 41.9 x 10.2 mm
    • Optional DIN Rail Mounting
    • CE compliant, C-UL-US Listed
    • Wide range of accessories
    • Special Solutions on request