705-5202-21 datasheet(25/28 Pages) MAGNETROL

25 / 28 page

R I G I D

S I N G L E

R O D

P R O B E

D I M E N S I O N S

I N C H E S

( m m )

Turbulence

For 7xF/7x1/7x2/7xJ (single rod/cable)

The bottom of the probe should be stabilized if tur-

bulence will cause a deflection of more than 3" at 10'

(75 mm at 3 m) of length. The probe should not

make contact with metal. A TFE bottom spacer for

7xF GWR probes or PEEK spacer for 7xJ is optional.

Nozzles: do not restrict the performance by

ensuring the following:

For 7xF/7x1/7x2/7xJ (single rod/cable):

1. Nozzle must be 50 mm (2") or larger diameter.

2. Nozzle inside diameter (A) should be

≥ to nozzle

height (B). If this is not the case, it is recommend-

ed to adjust BLOCKING DISTANCE and/or SENSI-

TIVITY settings.

For 7x5/7x7 (twin rod/cable):

1. Nozzle should be DN80 (3") diameter or larger.

2. For nozzles < DN80 (3") diameter, the bottom of

the inactive section of the probe should be flush

with the bottom of the nozzle or extend into the

vessel.

Metallic (conductive) obstructions in tank.

For 7xF/7x1/7x2 (single rod/cable)

A metal stillwell/cage of max. 6"/DN150 size or a

metal tank wall within 150 mm of the probe mount-

ing will allow the unit to operate accurately in media

with dielectrics down to

r 1.9. Objects in the prox-

imity can cause erroneous readings

For 7x5/7x7 (twin rod/cable)

Mount the probe more than 25 mm (1") from any

metallic object/vessel wall.

Non-metallic vessels

For 7xF/7x1/7x2/7xJ (single rod/cable)

Flange (metal) mounting is recommended for

optimum performance.

High level shutdown / Overﬁll protection

Special consideration is necessary in any high level shut-

down / overfill protection application where single rod

GWR probes are used. To ensure proper measurement,

the guided wave radar probe should be installed so the

maximum overfill level is at a minimum of 120 mm (4.8")

up to 910 mm (36") – blocking distance depending appli-

cation below the process connection. Consult factory for

further information.

Distance to probe

Acceptable objects

< 150 mm (6")

Continuous, smooth, parallel,

conductive surface (e.g. metal

tank wall); probe should not touch

tank wall

> 150 mm (6")

< 1"/DN25 diameter pipe and

beams, ladder rungs

> 300 mm (12")

< 3"/DN80 diameter pipe and

beams, concrete walls

> 450 mm (18")

All remaining objects

“ I N

T A N K ”

S T A N D A R D

S I N G L E

R O D

P R O B E

M O U N T I N G

C O N S I D E R A T I O N S

Pipe reducers

should not be used

Correct installation

7xF/7xJ

with threaded connection

max. 240" (6 m)

7xF/7xJ

with ﬂanged connection

max. 240" (6 m)

Spacer (end view)

3.28

(83)

4.12

(105)

10.08

(256)

1.42 (36)

2.36 (60)

2.24 (57)

Optional Spacer

4.00

(102)

Ø Rod

Bare 0.50 (13) /

PFA insulated

0.62 (16)

Process Conn.

2 cable

entries

Probe Insertion

Length for 2" (G2)

BSP process connection

Probe Insertion

Length for 2" NPT

process connection

45°

0.50 (13)

Ø Rod

Probe

Insertion

Length

1.90

(49)

705-5202-21 Datasheet(PDF) 25 Page - Magnetrol International, Inc.

705-5202-21 Datasheet(HTML) 25 Page - Magnetrol International, Inc.

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