705-5100-111 Datasheet, PDF (25/28 Pages) Magnetrol International, Inc. – Eclipse® Enhanced Model 705 Guided Wave Radar Level Transmitter

“IN TANK” STANDARD SINGLE ROD PROBE
MOUNTING CONSIDERATIONS
1. 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.
2. 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.
B
A
3. 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 ε_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.
Distance to probe
< 150 mm (6")
> 150 mm (6")
> 300 mm (12")
> 450 mm (18")
Acceptable objects
Continuous, smooth, parallel,
conductive surface (e.g. metal
tank wall); probe should not touch
tank wall
< 1"/DN25 diameter pipe and
beams, ladder rungs
< 3"/DN80 diameter pipe and
beams, concrete walls
All remaining objects
Correct installation
Pipe reducers
should not be used
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.
4. 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.
RIGID SINGLE
INCHES (mm)
ROD PROBE
3.28
4.12
(83)
(105)
DIMENSIONS
4.00
(102)
7xF/7xJ
with threaded connection
max. 240" (6 m)
1.90
(49)
Spacer (end view)
2 cable
entries
Process Conn.
2.24 (57)
Ø Rod
Bare 0.50 (13) /
PFA insulated
0.62 (16)
Probe Insertion
Length for 2" NPT
process connection
Optional Spacer
45°
10.08
(256)
1.42 (36)
Probe Insertion
Length for 2" (G2)
BSP process connection
0.50 (13)
Ø Rod
2.36 (60)
Probe
Insertion
Length
Optional Spacer
7xF/7xJ
with flanged connection
max. 240" (6 m)
25