Emerson Rosemount 1195 - Steam Service or Liquid Service above 450°F (232°C); For 5-Valve Manifolds Only

Rosemount Model 1195/ProPlate/Mass ProPlate
4-10
Steam Service or
Liquid Service above 450°F
(232°C)
Follow this procedure for commissioning a remote mounted ProPlate
for steam service or for liquid service at a temperature above 450°F
(232°C). Refer to Figure 2-31 and Figure 2-32 on page 2-23 for
electronics location and valve identification.
1. Ensure that primary instrument valves PH and PL closed; ME,
ML and MH are closed; and DVL and DVH are closed.
• For 5-valve manifolds, ensure that valves MEH and MEL
are closed.
2. Fill tees with water on each side until water overflows.
3. Open valves MH, ML and equalizer valve ME.
• For 5-valve manifolds, open equalizer valves MEH and MEL.
4. Open valves DVL and DVH.
5. Tap manifold until no air bubbles are visible.
6. Close both valves DVL and DVH.
7. Refill tees with water.
8. Gently tap electronics body, valve manifold, and impulse piping
with a small wrench to dislodge any remaining entrapped air.
9. Check ProPlate zero by noting the electronics output — this is
called a wet zero. The electronics should indicate a “zero” DP
signal. If the signal reads outside of the range 3.98 mA to 4.02 mA,
air is probably still in the system; repeat this procedure from step
2. Trim zero if necessary.
10. Close equalizer valve ME.
• For 5-valve manifolds, close equalizer valves MEH and MEL.
11. Replace plugs in tees.
12. Slowly open valves PH and PL. The system is now operational.
For 5-valve manifolds only:
13. Open valve MV. If valve MV is leaking, valves MEH and/or MEL
are not fully closed or require repair. This must be done before
taking any readings.