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4.2 Installation site
The flanged level transmitter was made by installing the flange into the
tank or tank wall. When the pressure diaphragm position being strictly vertical
the maximum zero changing is 28mm H2O. When the pressure diaphragm
position being strictly horizontal the minimum zero changing is 100mm H2O,
when will be eliminated if it has no influence for the range. (we need add a
insertion length variation for the plug-in flange.)
4.2.1 The installation site for the fareastone flange
When installing the fareastone flanged transmitter, there are restrictions
on the height difference between pressure transmitter and flange and
differential pressure level transmitter and flange.
We can see the data as below.
Range No.
Permissible height difference
Filling silicone
oil
Filling fluorocarbon oil
4
3.84
1.89
5
19.2
9.48
6
、
7
、
8
Without this limit
When pressure transmitter and flange or differential pressure level transmitter
and flange are not in a same height, the zero will be changed because of the
liquid column affecting. So it should be returned to zero after installation.
4.2.2
The changing of the measured medium temperature and environment will
cause the zero drifting of transmitter. It can reduce the impact if we install as
the methods below.
1.The transmitter and fareastone equipment does not shined by the sun
