Description

7xF: standard single rod

7xJ: HTHP single rod

Materials

Probe

(1.4401/1.4404)

Process seal

(Consult factory for alternatives)

PEEK with Aegis PF 128

Probe diameter

Bare: 0.50" (13 mm) -

PFA coated: 0.625" (16 mm)

Bare: 0.50" (13 mm)

Mounting

See mounting considerations on page 25

Process Connection

Threaded: 2" NPT or 2" BSP (G2) – Flanged: Various ANSI or EN/DIN

Probe length

From 24 to 240 inches (60 to 610 cm) selectable in 1-inch or 1-cm increments

Blocking distance (top)

4.8" up to 36" (12 up to 91 cm) - depending probe length (adjustable)

Transition Zone



(bottom)

ε

r

≥ 10: 1" (25 mm)

Process Temp.

Max

+300° F @ 400 psi (+150° C @ 27 bar) ambient

+600° F @ 2250 psi (+315° C @ 155 bar)

Min

-40° F @ 750 psi (-40° C @ 50 bar) – 200 psi (13.7 bar) for 7xF-F

Max Process Pressure

1000 psi @ +70° F (70 bar @ +20° C)

3000 psi @ +70° F (207 bar @ +20° C)

Max Viscosity

10.000 cP – consult factory in case of agitation/turbulence

Dielectric Range

ε

r 10-100 (depending installation conditions, down to

ε

r

≥ 1.9) – liquids

Mechanical load

Not applicable

Pull-down force

Not applicable

Media coating

Maximum error of 10% of coated length. % Error is related to dielectric of medium, thickness of

coating and coated probe length above level.

Œ

Consult factory for insertion length < 24" (60 cm)



Transition Zone (zone with reduced accuracy) is dielectric dependent;

ε

r = dielectric permitivity. It is recommended to set 4–20 mA signal outside transition zones.

Ž

See tables on page 9.



Bridging is defined as continuous accumulation of material between the probe elements.

8

Description

7xT / 7xN: Interface GWR Probe

7xR / 7xM: Overfill Protection Coaxial Probe

7xB: Standard Twin Rod GWR Probe

Materials

Probe

316/316L (1.4401/1.4404)

Process seal

Spacers

Teflon

Probe diameter

Small coax

Inner rod 0.31" (8 mm)

Outer tube 0.87" (22.5 mm)

Two 0.5" (13 mm) Ø rods –

22 mm (0.875") CL to CL

Large coax

Stainless steel: Inner rod 0.63" (16 mm) – Outer

tube 1.75" (45 mm)

Hastelloy C and Monel: Inner rod 0.63" (16 mm) –

Outer tube 1.92" (49 mm)

Mounting

In-tank mounting / external cage mounting

– overfill safe

In-tank mounting only. Twin rod probe must be

used in metallic vessel or stillwell > 1" (25 mm) from

any surface or obstruction

Process Connection

enlarged probe

Flanged: Various ANSI, DIN or “proprietary”

mating flanges

Threaded: 2" NPT or 2" BSP (G2)

Flanged: Various ANSI, DIN or “proprietary”

mating flanges

Probe length

From 24 to 240 inches (60 to 610 cm), selectable in 1-inch or 1-cm increments

Œ

Transition Zone



Top

None

ε

r

≥ 1.9 = 6" (150 mm)

Bottom

ε

r: 1.4 = 6" (150 mm)/

ε

r: 80 = 2" (50 mm)

ε

r: 1.9 = 6" (150 mm)/

ε

r: 80 = 1" (25 mm)

Process Temp.

Max

+400° F @ 270 psi (+200° C @ 18 bar)

Min

-40° F @ 750 psi (-40° C @ 50 bar)

Max. Process Pressure

Ž

1000 psi @ +70° F (70 bar @ +20° C)

1000 psi @ +70 °F (70 bar @ +20° C)

Max. Viscosity

500 cP

1500 cP

Dielectric Range

Upper liquid:

≥ 1.4 and ≤ 5, Lower liquid: ≥ 15

1.9 to 100

Vacuum service

Negative pressure but not hermetic seal

Media coating

In case of media coating, select 7xN probe.

Film: 3% error of coated length,

bridging not recommended



P R O B E

S P E C I F I C A T I O N S