Transducers Transformer unit with built-in converter (CTA-VA) Measuring devices - 0-20 and 4-20Â mA CSA transducers Measuring devices - 1 to 5Â A - 400Â VÂ AC inputs CEA-VA transducer Measuring devices - 1 to 5Â A CEA-VA4 transducer Measuring devices - 1 to 5Â A inputs