Process Instrumentation Activities Safer Industry Process Instrumentation Process instruments selection and procurement (Actuator, Sensor, Transmitter, gauges, etc.). Instrument mechanical installation (supports, tubing) and electrical connections. Instrument installations based on hook-up drawings, tubing and manifold production and installations. Instrument adjustments, calibrations and signal tests. Puneomatic valve air line and header installations. Valve test and calibration.Leakage tests.Loop tests.