49Section 6 MaintenanceDANGEROnly qualified personnel should conduct the tasks described in this section of themanual.6.1 Cleaning the InstrumentWith the junction box securely closed, wipe the exterior with a damp cloth.6.2 Sensor/Electrode MaintenanceStore the electrode in KCl solution to avoid damage during long term storage.Carefully clean the electrode monthly with a soft, non-abrasive cloth.The manufacturer recommends recalibrating the sensor once a month.
