Attach The Electronics Board; Install The Terminal Block; Reassemble The Rosemount 3051C Process Flange - Emerson Rosemount 3051 Reference Manual

Reference Manual
00809-0100-4797, Rev DA
6.8.1

Attach the electronics board

1. Remove the cable connector from its position inside of the internal black cap and attach
it to the electronics board.
2. Using the two captive screws as handles, insert the electronics board into the housing.
Make sure the posts from the electronics housing properly engage the receptacles on
the electronics board. Do not force. The electronics board should slide gently on the
connections.
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.
6.8.2

Install the terminal block

1. Gently slide the terminal block into place, making sure the two posts from the
electronics housing properly engage the receptacles on the terminal block.
2. Tighten the captive screws.
3. Replace the electronics housing cover. The transmitter covers must be fully engaged to
meet explosion-proof requirements.
6.8.3

Reassemble the Rosemount 3051C process flange

1. Inspect the sensor module PTFE O-rings. Undamaged O-rings may be reused. Replace
O-rings that show any signs of damage, such as nicks, cuts, or general wear.
Note
If 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 connection. Possible options include:

a. Hold the process flange in place by installing the two alignment screws to finger
b. Install the four 1.75-in. flange bolts by finger tightening them to the flange.

a. Hold the process flange in place by installing the two alignment screws to finger
b. Hold the flange adapters and adapter O-rings in place while installing the four

a. Contact the manifold manufacturer for the appropriate bolts and procedures.
3. Tighten the bolts to the initial torque value using a crossed pattern. See
appropriate torque values.
Troubleshooting
Coplanar process flange
tightness (screws are not pressure retaining). Do not overtighten as this will affect
module-to-flange alignment.
Coplanar process flange with flange adapters
tightness (screws are not pressure retaining). Do not overtighten as this will affect
module-to-flange alignment.
configurations, use four 2.88-in. bolts. For gage pressure configurations, use two
2.88-in. bolts and two 1.75-in. bolts.
Manifold
Troubleshooting
August 2016
Table 6-7 for
55