Hi,
thank you very much for all responses.
There is no unique opinion, but most people recommend
the installation of the sensor nearby the magnet.
That's why I first will check to keep the temperature
of the incoming air constant and if this fails, I will
install the sensor nearby the magnet. Are the sensors
resistant against magnetic fields?
Please allow some additional words concerning
our installation. My english is very bad and that's why
I made my first question very short.In our case the
magnet is installed within a
round building with a diameter of about 11 meters (somewhat
around 35 feet). The incoming air falls down around the inner
walls of this building (btw a picture of this building during
the construction is here:
http://www.org.chemie.tu-
muenchen.de/nmr/nmrdateien/900mhz/290300e.jpg ).
The walls doesn't contain any windows and they are very good
isolated. This part of the installation works very well.
In spite of a gas flow of 5000 m**3/h you don't feel it.
The electronics is installed within the room between the
magnet building and the existing building. This part
contains windows. No sun is incoming at any time but the
diffuse heat radiation is large enough to input somewhat
around 2 kW of energy into the buidling during the daylight
time. This increases the temperature of the outgoing
air, which is collected nearby the electronics. And due to this
effect, the temperature of the incoming air decreases during
the daylight time. If all atempts to control the
temperature fail, I would have to close the windows against any
light. But if possible, I want to avoid this.
Best regards
Rainer
Received on Wed Jul 10 2002 - 15:33:58 MST