Answer / Shailendra Arya

The 4-20 mA current range (also known as 4-20 maa or milliamps analog) is widely used in industrial instrumentation for several reasons:
1. Accuracy: The 4-20 mA range provides a high level of accuracy due to its small current values. Sensors and transmitters can be designed with precision, ensuring reliable readings.
2. Linearity: The 4-20 mA range offers good linearity, meaning that the relationship between the input signal (current) and the output (measured value) remains consistent over a wide range of values.
3. Low power consumption: The small current values used in the 4-20 mA range result in low power consumption, making it suitable for long-distance transmission of signals through wires with minimal power loss.
4. Safety: The 4-20 mA range is safe to work with and has low voltage levels, minimizing the risk of electrical shock or damage to equipment.
5. Compatibility: The 4-20 mA standard is widely accepted and used in various industries worldwide, ensuring compatibility between different devices and instruments.

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