Kullanıcı Kılavuzu Emerson Uydu Radyosu 1154 [14/60 Sayfalar]

Emerson uydu radyosu 1154

Reference Manual

00809-0100-4514, Rev BA

January 2008

Rosemount 1154

2-2

Figure 2-1. Qualified

Life vs. Ambient Temperature.

MECHANICAL

CONSIDERATIONS

This section contains information you should consider when preparing to

mount the transmitter. Read this section carefully before proceeding to the

mechanical installation procedure.

Mount the Rosemount 1154 transmitter to a rigid support (a support with a

fundamental mechanical resonant frequency of 40 Hz or greater). A mounting

bracket included with the transmitter facilitates panel mounting. Figure 2-4 on

page 2-6 shows the qualified mounting configurations. The transmitter was

seismic qualified with the bracket mounted with four

/8-in. diameter bolts.

Orientation with respect to gravity is not critical to qualification. However, if the

transmitter is mounted with the flanges in a horizontal position, zero the

transmitter to cancel the liquid head effect caused by the difference in height

of the process connections.

If the transmitter is mounted to a non-rigid panel, the user must ensure that

seismic input to the mounting bracket does not exceed qualification levels

given in Rosemount Report D8400102.

Process Connections Process tubing installation must prevent any added mechanical stress on the

transmitter under seismic disturbances. This may be done by using

stress-relief loops in the process tubing or by separately supporting the

process tubing close to the transmitter.

The process connections to the transmitter flanges were qualified with

/8-in.

tubing using Swagelok

compression fittings. For options using

/4–18 NPT

connections, the user assumes responsibility for qualifying the interface.

The Swagelok tube fittings are shipped completely assembled for immediate

use. Do not disassemble them before use; doing so may contaminate the

fittings and result in leaks. Insert the tubing into the Swagelok tube fitting,

making sure that the tubing rests firmly on the shoulder of the fitting and that

the nut is finger tight. Tighten the nut one-and-one-quarter turns past finger

tight to prepare the transmitter for use. Do not overtighten.

Electronics

Qualified Life

Temperature (°F)

Time (Years)

Module

Qualified

Life

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