Honeywell SMV 3000 사용자 설명서

102

SMV 3000 Transmitter User’s Manual 

1/99

Continued

Procedure, continued

Table 27

Inspecting and Cleaning Barrier Diaphragms, Continued

Remove O-ring and clean interior of process head using soft bristle
brush and suitable solvent.

Inspect barrier diaphragm for any signs of deterioration or corrosion.
Look for possible residue and clean if necessary.

NOTE:  If diaphragm is dented, has distorted convolutions or radial

wrinkles, performance may be affected.  Contact the
Solutions Support Center for assistance.

Replace O-ring or teflon gasket ring.

Coat threads on process head bolts with anti-seize compound such
as “Neverseize” or equivalent.

Replace process heads and bolts. Finger tighten nuts.

Use a torque wrench to gradually tighten nuts to torque of 40 ft-lb (54
N•m) for carbon steel process heads bolts or 35 ft-lb (47.5  N•m) for
stainless steel process head bolts in sequence shown in following
illustration. Tighten head bolts in stages of 1/3 full torque, 2/3 full
torque, and then full torque.

22519

Always tighten head bolts in 
sequence shown and in these 
stages: 

1. 1/3 full torque 
2. 2/3 full torque 
3. Full torque 

Return transmitter to service.

CAUTION  Do not exceed the overload rating when placing the

transmitter back into service or during cleaning operations. See
Overpressure ratings in Section 3 of this manual.