Emerson Rosemount 485 Annubar Quick Start Manual page 14

Quick Start Guide
Figure 12. Valve Identification for 5-Valve and 3-Valve Manifolds
5-valve manifold
To PH
MH
2
MEH
DVH
1
Table 4. Description of Impulse Valves and Components
Name Description
Components
1 Transmitter
2 Manifold
Manifold and impulse valves
PH
Primary sensor
PL Primary sensor
DVH Drain/vent valve
DVL Drain/vent valve
(1)
MH Manifold
(2)
ML Manifold
MEH Manifold equalizer
MEL Manifold equalizer
ME Manifold equalizer
MV Manifold vent valve
1. High pressure
2. Low pressure
14
To PL
MV
MH
ML
MEL
DVH
DVL
Purpose
Reads Differential Pressure
Isolates and equalizes transmitter
(1)
High and low side pressure process connections.
(2)
(1)
Drains (for gas service) or vents (for liquid or steam service) the DP
transmitter chambers
(2)
Isolates high side or low side pressure from the process
(1)
Allows high and low pressure side access to the vent valve, or for
isolating the process fluid
(2)
Allows high and low side pressure to equalize
Vents process fluid
3-valve manifold
To PH To PL
ME
2
1
June 2016
ML
DVL