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Quick Answer To choose the right digital pressure gauge for your pneumatic system, you must evaluate four critical factors: the required pressure range, the desired accuracy level, the specific output signal type (such as NPN/PNP, 4-20mA, or 0-10V), and the operating environment. Selecting a gauge that strictly aligns with these parameters ensures optimal efficiency, safety, and seamless integration into your industrial automation control processes.   Key Takeaways Pressure Range: Always select a gauge with a maximum range that exceeds your system's normal operating pressure by 20-30% to prevent sensor damage. Signal Compatibility: Ensure the gauge's output signals match your PLC (Programmable Logic Controller) requirements for accurate data transmission. Environmental Durabili...