Direct Mounting To Process, Model 7Mf4433 Or 7Mf4533 - Siemens 7MF4033 series User Manual

Installation
Models 7MF4333, 7MF4433, and 7MF4533
FIGURE 4-13 Differential Construction, Position Options

4.4.2 Direct Mounting to Process, Model 7MF4433 or 7MF4533

A differential transmitter can be interfaced to the process through a
two- or three-valve manifold and supported by the piping
connections (3-inch nipples) if mounted directly at the point of
measurement.
Transmitter process connections are on 2.13-inch (54 mm) centers
to allow direct mounting (bolting) to a manifold with the same
spacing. Each transmitter process connection (end cap) has two
tapped 7/16-20 mounting holes and a 1/4 NPT tapped pressure
inlet. High pressure (+) and low pressure (-) sides of the transmitter
are marked by labels (see Figure 4-12) and engraved on the capsule
between the end caps.
Process orifice flanges with standard 2.13-inch spacing permit a transmitter and two- or three-valve
manifold combination to be direct mounted.
The procedure for mounting a transmitter to a two- or three-valve manifold, and the manifold to the
orifice flanges, is covered by the installation instructions supplied by the manifold manufacturer.
The following is a guide and may need to be modified for some installations. Teflon
recommended thread sealant for process connections at the transmitter.
1. If installed, remove process connection blocks from the transmitter's end caps (process manifold).
2. Press the supplied O-ring seals into the grooves in the face of the two- or three-valve manifold and
bolt the transmitter end caps to the transmitter side of the two- or three-valve manifold. Tighten
mounting bolts to 400 in/lbs (45.2 Nm).
4-24
UMSITRPDS3-1
Nipple Mount for
Liquid Service
Orifice
Flanges
Flow
High
Pressure
Side
3-Valve
Manifold
®
tape is the
November 2005
920-07012-XXX-1.pdf
Low
Pressure
Side
End Cap