705-5100-F21 datasheet(14/52 Pages) MAGNETROL

14 / 52 page

57-645 Eclipse Guided Wave Radar Transmitter - PROFIBUS PA™

3.4.2 Installing a Twin Rod Probe

(Models 7xB, 7x5, and 7x7)

Before installing, make sure the:

• Model and serial numbers on the nameplates of the Eclipse

probe and transmitter are identical.

• Probe has adequate headroom for installation and has unob-

structed entry to the bottom of the vessel.

• Process temperature, pressure, dielectric, viscosity, and

media buildup are within the probe specifications for the

installation.

Nozzles:

The 7xB/7x5/7x7 Twin Rod probes may be susceptible to

objects that are in close proximity. The following rules

should be followed for proper application:

1. Nozzles should be 3" (80 mm) diameter or larger.

2. 7xB/7x5/7x7 Twin Rod probes should be installed such that

the active rod is >1" (25 mm) from metallic objects such as

pipes, ladders, etc., (a bare tank wall parallel to the probe is

acceptable).

3.4.2.1 To install a rigid twin rod probe:

x Make sure the process connection is at least 2" NPT or a

flanged mounting.

y Make sure that there is at least 1" (25 mm) spacing between

the active probe rod and any part of the tank (walls, still-

well, pipes, support beams, mixer blades, etc.). Minimum

stillwell diameter for Twin Rod probe is 3".

z Carefully place the probe into the vessel. Align the gasket

on flanged installations.

{ Align the probe process connection with the threaded or

flanged mounting on the vessel.

| For threaded connections, tighten the hex nut of the probe

process connection. For flanged connections, tighten flange

bolts.

} Probe can be stabilized by attaching the inactive probe rod

to vessel.

NOTE: If the transmitter is to be installed at a later time, do not remove

the protective cap from the probe. Do not use sealing com-

pound or TFE tape on probe connection to transmitter as this

connection is sealed by a Viton® O-ring.

Active

probe rod

Inactive

probe rod

{

}

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