Emerson Process Management 2051 REASSEMBLY PROCEDURES Attach the, Rosemount, Reference Manual

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA July 2008

REASSEMBLY

PROCEDURES

Attach the

Electronics Board

Install the Terminal Block

Reassemble the 2051C Process Flange

1.Inspect all cover and housing (non-process wetted) O-rings and replace if necessary. Lightly grease with silicone lubricant to ensure a good seal.

2.Carefully tuck the cable connector completely inside the internal black cap. To do so, turn the black cap and cable counterclockwise one rotation to tighten the cable.

3.Lower the electronics housing onto the module. Guide the internal black cap and cable through the housing and into the external black cap.

4.Turn the module clockwise into the housing.

IMPORTANT

Make sure the sensor ribbon cable and internal black cap remain completely free of the housing as you rotate it. Damage can occur to the cable if the internal black cap and ribbon cable become hung up and rotate with the housing.

5. Thread the housing completely onto the sensor module. The housing must be no more than one full turn from flush with the sensor module to comply with explosion proof requirements.

6. Tighten the housing rotation set screw using a 5/64-inch hex wrench.

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.

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.

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 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 connection. Possible options include:

See “Safety Messages” on page 5-1 for complete warning information.

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