704-5010-130 Datasheet, PDF (28/36 Pages) Magnetrol International, Inc. – GuidedWave Radar Level Transmitter

3.5.3 Materials of Construction
Model
Materials
Coaxial
(7XA, 7XR)
Rigid Twin Rod
(7XB)
316/616L stainless steel (Hastelloy C and Monel opt.)
TFE spacers, Viton^® O-rings
Diameter
Process
Connection
.3125" (8mm) ø rod
.875" (10mm) ø tube
3_{⁄4" NPT, 1" BSP}
ANSI or DIN flanges
Two, .5" (13 mm) ø rods,
.375" clearance between rods
2" NPT
ANSI or DIN flanges
Transition Zone
(Top)
1" (25
6"(150
mm)@
mm)@
εε_rr==820..00
71""(1(2758mmmm))(+(+44""ininaaccttivivee))^{εεrr><1100}
Transition Zone
(Bottom)
6"
1"
((21550mmmm) ^)@@εε_r ^r==820..00
Note: Transition Zone is dielectric dependent; ε_r = dielectric permittivity. The transmitter still operates but level
reading may become nonlinear in Transition Zone.
3.5.4 Process Conditions
Model
Maximum
Process Temperature
Maximum
Process Pressure
Maximum Viscosity
Dielectric Range
Hermeticity
Coaxial
(7XA, 7XR)
+400° F @ 270 psig
(+200° C @ 13 bar)
1000 psig @ +70° F
(70 bar @ +20° C)
500 cp
≥ 1.7
N/A
Twin Rod
(7XB)
+400° F @ 200 psig
(+200° C @ 13 bar)
750 psig @ +70° F
(50 bar @ +20° C)
1500 cp
≥ 2.5
N/A
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
50
150
250
350
450
Process Temperature, ^∞F (max. 400)
7XA
7XB
200
180
160
140
120
100
80
60
40
20
0
100 150 200 250
300
350
400
Process Temperature, ^∞F
Ambient Temperature vs Process Temperature - 7XA & 7XB
25
57-603 Horizon Guided Wave Radar Transmitter