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SensorLex8B36

Potentiometer Input Modules with Voltage-Output, Bandwidth 3 Hz

SensorLex8B36 image

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B36 input module isolates, filters, and amplifies a single channel of potentiometer input and provides an analog voltage output.

Excitation for the potentiometer is provided by using two matched current sources. When using a 3-wire connection, this method allows equal currents to flow through the sensor leads, canceling the effects of lead resistances.The excitation currents are small (equal to or less than 0.25 mA) which minimizes self-heating of the potentiometer.

Signal filtering is accomplished with a 3-pole filter optimized for time and frequency response which provides 70 dB of normal-mode rejection at 60 Hz. 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 8B36 module provides protection against acciden-tal connection of power-line voltages up to 240 VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.

Circuit diagram Dataforth SensorLex8B36

Block Diagram SensorLex8B36



PDF Downloads:

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

  • 4 Modules for Type SensorLex8B36:

    ModuleInputDescription
    8B36-01 0 Ohm to 100 Ohm SensorLex8B36 Isolated Potentiometer Input Module with Voltage-Output
    8B36-02 0 Ohm to 500 Ohm SensorLex8B36 Isolated Potentiometer Input Module with Voltage-Output
    8B36-03 0 Ohm to 1000 Ohm SensorLex8B36 Isolated Potentiometer Input Module with Voltage-Output
    8B36-04 0 Ohm to 10000 Ohm SensorLex8B36 Isolated Potentiometer Input Module with Voltage-Output

    Specifications

    top
    • Input: Potentiometer up to 10 kOhm
    • Output: 0 V … 5 V
    • Bandwidth 3 Hz
    • Isolation 1500 Vrms
    • Input protection 240 VAC
    • Input Resistance 50 MOhm
    • Accuracy ± 0.05%
    • Linearity ± 0.02%
    • ANSI/IEEE C37.90.1 Input protection
    • CMR 120dB
    • True 2-way isolation
    • NMR: 70dB at 60Hz
    • 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