American Magnetics 185 & 186 Liquid Level Instruments (CE-Marked) - Manual (Page 22)

12 Rev. 3
Installation
Installing the sensor
2.2 Rack Mounting the Instrument
If the instrument has a rack mount chassis, follow the following procedure:
a. Attach the rack mount adapter pieces to the instrument by first
removing the four screws on the side of the instrument that
attach the cover to the chassis. Attach the rack mount adapter
pieces to the sides of the instrument by reinstalling the screws.
b. Install the instrument in a 19" rack by securing the front panel
to the rail in each of the four corners with mounting hardware
supplied by the cabinet manufacturer.
Warning
Do not remove the cabinet feet and then reinsert the original screws.
Doing so could present a severe life-threatening electrical hazard. If
removal of the cabinet feet is desired, replace the original screws
with screws not to exceed 1/4" in length. Screws longer than 1/4"
will contact and damage the printed circuit board inside the unit.
2.3 Installing the Sensor in the Cryo-vessel
Exercise care when installing the sensor since dents, crimps, bends or
other physical distortions in the thin wall capacitor will change electrical
characteristics possibly causing calibration errors and/or disruption of
proper instrument operation. Before installing the sensor, the user may
want to review the Calibration and Operation sections to determine what,
if any, calibration procedures may be necessary.
Note
The coaxial interconnecting cables and the oscillator are
temperature sensitive and should be mounted in such a manner as
to avoid large temperature changes such as those encountered in the
path of dewar vents.