705-5100-F21 datasheet(16/52 Pages) MAGNETROL

16 / 52 page

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

2. Ratio of Diameter: Length (A:B) is 1:1 or greater; any

ratio <1:1 (e.g., a 2"

× 6" nozzle = 1:3) may require a

Blocking Distance and/or DIELECTRIC adjustment

3. No pipe reducers (restrictions) are used.

• Probe is kept away from conductive objects to ensure proper

performance. See Probe Clearance Table below. A lower gain

(increase in DIELECTRIC setting) may be necessary to

ignore certain objects.

3.4.3.1 To install a Model 7xF rigid single rod probe:

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

flanged mounting.

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

on flanged installations.

z 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 placing into a non-metallic cup

or bracket at the bottom of the probe. A TFE bottom

spacer (P/N 89-9114-001) is optional for mounting into

a metallic cup or bracket.

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.

3.4.3.2 To install a Model 7x1 flexible single rod probe:

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

flanged mounting.

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

on flanged installations.

Distance

to Probe

Acceptable Objects

<6"

Continuous, smooth, parallel conductive

surface, for example a metal tank wall;

important that probe does not touch wall

>6"

<1" (25mm) diameter pipe and beams,

ladder rungs

>12"

<3" (75mm) diameter pipe and beams,

concrete walls

>18"

All remaining objects

PROBE CLEARANCE GUIDELINES

y z

{

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