Reliable instrumentation

The instrumentation shall comply with the technical specifications required for the performance of the intended work. Instrument requires proper operating conditions for long term fault free operation:

• Adequate environment operating conditions.
  
  
• Protected against external electrical disturbance, electromagnetic interference or electrostatic discharges.
  
  
• Properly wired and grounded.

Instrumentation shall be periodically verified and calibrated. Records containing the calibration results (certificates) must be maintained. Measuring instruments shall be unequivocally labelled to ensure traceability of the measurements.

Faulty instruments or suspected to give erroneous results must be keep apart and signed "OUT OF SERVICE". After reparation, the instrument must be calibrated before use.