Coastal Dampp-chaser calibration

[Wayne M. Williams]

Dear Andrew:
Thanks for the reply. It was most helpful. The Steimway has a bar in it already, but it is not connected to any kind of controlling device. Do we need a new system with a regulater to shut the bar off so that the piano does not "bake"?

Wayne Williams
  ----- Original Message ----- 
  From: Andrew and Rebeca Anderson 
  To: Pianotech List 
  Sent: Wednesday, August 08, 2007 3:27 PM
  Subject: Re: Coastal Dampp-chaser calibration


  Thanks Terry.

  At 01:31 PM 8/8/2007, you wrote:

    "With a DC system the hygrometer controlled dehumidifier..."
     
    Hygrometer is an instrument one can use to measure relative humidity in air. Humidistat is an electronic device that senses RH and can regulate a dehumidifier and/or humidifier.
     
    Terry Farrell

      ----- Original Message ----- 

      As Steinway generally puts is, controlling the whole room is best but not always feasible and when that is the case a DC system is the way to go.  If I understand you correctly, you have measured the humidity and have not noticed any lows dipping into the forties during the active season there.  If that is the case, a DC dehumidifier only system with under/back covers would prove adequate for the summer performance season.  The low winter temperature if kept steady will probably keep a steady humidity profile for the pianos.  With a DC system the hygrometer controlled dehumidifier bars will shut off when they are not needed and you don't have to worry about baking the piano.


      I doubt a full system with humidifier would be properly maintained if the camp is shut down for the winter.  You mention they are in a room kept to 50 degrees.  I don't know how cold that area gets but it is possible that humidity levels are acceptably high-enough during the winter.  Of-course putting a hygrometer in the room that tracks high and low extremes would reveal any problems.  Since it is a presumably small room it may be possible to plumb in a low maintenance humidifier if that is needed for the winter.


      Good Luck,

      Andrew Anderson





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