I am assuming you want to measure parameters at the compressor outlet, but still before the filtration. This means you have wet air which might carry additional contaminations like oil or particles.

For flow measurements:
+Pitot Tube Flow Meter (S430): This is suitable for measuring wet air flow, as thermal mass flow sensors like S401, S421, and S415 cannot be used in dirty and wet conditions.

+Pressure Sensors (S010 / S011): These sensors are designed for measuring compressed air and gases, providing highly accurate pressure readings.

+Temperature Sensors (S020): These high-quality sensors are used for measuring the temperature of compressed air and gases.

These sensors play a crucial role in monitoring and optimizing the performance of compressed air systems. If you need more specific information or assistance, feel free to ask!