Reference Manual
00809-0100-4738, Rev DA
May 2006
Rosemount 3095FB
5-10
Attach the Electronics
Board
1.
Remove the cable connector from its position inside of the internal
shroud and attach it to the electronics board.
2.
Insert the electronics board into the housing, making sure that the
posts from the electronics housing properly engage the receptacles
on the electronics board.
3.
Tighten the captive mounting screws.
4.
Replace the electronics housing cover. The transmitter covers must
be engaged metal-to-metal to ensure a proper seal and to meet
Explosion-Proof requirements.
Install the Terminal Block
Gently slide the terminal block into place, making sure the posts from the
electronics housing properly engage the receptacles on the terminal block.
Tighten the captive screws and replace the electronics housing cover. The
transmitter covers must be fully engaged to meet Explosion-Proof
requirements.
Reassembling the
Process Sensor Body
1.
Visually inspect the Teflon sensor module O-rings. If the O-rings are
undamaged, you may reuse them. If the O-rings show signs of
damage, such as nicks or cuts, or if there is any doubt about their
ability to seal properly, replace them with new O-rings.
NOTE
If you are replacing the O-rings, be careful not to scratch the O-ring grooves
or the surface of the isolating diaphragm when removing the damaged
O-rings.
2.
Install the process flange on the sensor module. To hold the process
flange in place, install the two hex head alignment screws. While
these screws are not pressure retaining, tighten the hex head
alignment screws to 33 in-lbs to ensure proper alignment. Do not
over-tighten; this will affect the module/flange alignment.
3.
Install the appropriate flange bolts:
•
For installations requiring a 1/4–18 NPT mounting, install the four
1.75-inch process flange bolts. First, finger-tighten the bolts. Then
tighten the bolts incrementally in a cross pattern until they are securely
tightened to 650 in-lb (300 in-lb for stainless steel bolts). After
tightening, the bolts should protrude through the top of the module
housing.
•
For installations requiring a 1/2–14 NPT mounting, hold the optional
flange adapters and flange adapter O-rings in place while
finger-tightening the four 2.88-inch process flange/adapter bolts.
Tighten the bolts in a cross pattern following the procedure outlined
above. (Use two 2.88-inch bolts and two 1.75-inch bolts for gage
pressure configurations.) After tightening, the bolts should protrude
through the top of the module housing. If the bolts do not extend all the
way through the module housing, you have used a bolt of incorrect
length. Replace the bolt with one of the correct length, and repeat the
procedure.
•
For installations with a three-valve manifold, align the process flange
with the three-valve manifold. Install the four 2.25-inch manifold flange
bolts following the procedure outlined above. After tightening, the bolts
should protrude through the top of the module housing. If the bolts do
