I would greatly appreciate some direction here.  Safety standards suggest a humidification level of 50-70% thereabouts inside the chamber.  Are you measuring the humidification level INSIDE the chamber and if so, how?  Any information would help.

ADarlington, Canada

This is not much help to you - but we are not measuring humidity levels inside our chambers or in the chamber room. I inquired once with engineering about measuring humidity levels in the chamber room and was told it would be a logistical nightmare. They were trying to monitor and control humidity levels in a separate department in this facility (non HBO related) and were constantly having time and money consuming issues.