INFICON STM-100/MF Thin Film Deposition Monitor - Manual (Page 44)

INSTALLING COMPRESSION FITTINGS
SWAGELOK Tube fittings are installed in three easy steps:
Step 1 Simply insert the tubing into the SWAGELOK Tube Fitting. Make
sure that the tubing rests firmly on the shoulder of the fitting and that
the nut is finger tight.
Step 2 Before tightening the SWAGELOK nut, scribe the nut at the 6 o'clock
position.
Step 3 Now, while holding the fitting body steady with a backup wrench,
tighten the nut 3/4 of a turn. Watch the scribe mark, and make 3/4
revolution to the 3 o'clock position.
By scribing the nut at the 6 o'clock position as it appears to you, there
will be no doubt as to the starting position. When tightened 3/4 of a
turn to the 3 o'clock position you can easily see that the fitting has
been properly installed
RE-TIGHTENING INSTRUCTIONS
Connections can be disconnected and re-tightened many times. The same
reliable, leak-proof seal can be obtained every time the connection is remade.
First tighten the nut by hand. Then rotate the nut to the original position (scribe
mark at 3 o'clock) with a wrench. An increase in resistance will be felt near this
point. Now tighten an additional 1/8 turn.
VACUUM FEEDTHROUGH
The vacuum feedthrough should be installed as close as practically possible
to the sensor head. This allows the shortest length of sensor-to-feedthrough coax
cable to be used. Cable lengths greater than 30 inches may reduce crystal life
and stability. Install the feedthrough using proper gaskets and vacuum grease if
needed. The small electrical coax connector should be on the vacuum side of the
installation.
Caution Ensure that the water lines are clear of obstructions
before operating the sensor above room
temperature. A water flow rate of 0.2 to 0.3 gpm is
adequate for most applications.
Vacuum Feedthrough
INSTALLATION Page 3 - 10