
69
Reference Manual
00809-0100-4102, Rev AA
Section 6: Troubleshooting
June 2012
Troubleshooting
6.4
Reassembly Procedures
important
The V-Seal must be installed at the bottom of the housing.
6.4.1
Reassemble the Process Flange
1.
Inspect the Teflon sensor module o-rings. If the o-rings are not damaged, reuse them.
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 flange on the sensor module. To hold the process flange in place,
install the two alignment screws to finger tight (screws are not pressure retaining). Do
not overtighten; this will affect module-to-flange alignment.
3.
Install the appropriate flange bolts.
a.
If the installation requires a
1
/
4
–18 NPT mounting, use four 1.75-in. flange bolts. Go to
b. If the installation requires a
1
/
2
–14 NPT mounting, use four 2.88-in. process
flange/adapter bolts. For gage pressure configurations, use two 2.88-in. bolts and two
1.75-in. bolts. Go to
c.
If the installation uses a manifold (differential pressure applications only), use
d. Hold the flange adapters and adapter o-rings in place while finger-tightening the bolts.
Go to
e.
Align the process flange with the manifold.
f.
Finger tighten the bolts.
g. Tighten the bolts to the initial torque value using a crossed pattern. See
for
appropriate torque values.
h. Tighten the bolts to the final torque value using a crossed pattern. See
for
appropriate torque values. When fully tightened, the bolts should extend through the
top of the module housing.
i.
If the installation uses a manifold, then install flange adapters on the process end of the
manifold using the 1.75-in. flange bolts supplied with the transmitter.
Содержание Rosemount 2051 Wireless Series
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