4-20mA Bridge Amplifier

This miniature, on-board, transducer amplifier is capable of supplying excitation voltage and amplifying millivolt signals from strain gauge based transducers.

The model 90416 bi-polar amplifier can be mounted inside the housings of many of our load cells and torque sensors. Where space is a premium, these amplifiers can also be integrated into the back

shell of the connector, or in-line with the signal cable. Uses include interfacing sensors with PC cards, A/D boards, standard panel meters, and other instrumentation that require high-level analog signal inputs.

Model number: 90416

For more information or to request additional specification, please contact us.

    Key Features


    • External shunt calibration
    Output 4 – 20mA or 12 +/-8mA (factory set)  
    Input Range .05mV/V to 2.0mV/V  
    Zero offset (sensor dependent)  
    Gain drift with temperature (typical) +/- 25ppm/°F  
    Offset drift with temperature (typical) +/-40ppm/°F  
    Operating temperature range -40°F to 185°F  
    Excitation output voltage 4.1Vdc  
    Minimum bridge impedance 350 Ohms  
    Operating voltage 15 – 24Vdc  
    Bandwidth 1kHz low pass filter  
    Quiescent current (excluding bridge) < 40mA