2.4.2 Installing a Twin Rod Probe
(Models 7xB, 7x5, and 7x7)
Before installing, make sure the:
• Model and serial numbers on the nameplates of the
ECLIPSE probe and transmitter are identical.
• Probe has adequate headroom for installation and has unob-
structed entry to the bottom of the vessel.
• Process temperature, pressure, dielectric, viscosity, and
media buildup are within the probe specifications for the
installation. See Specifications, Section 3.6.
Nozzles:
The 7xB/7x5/7x7 Twin Rod probes may be susceptible to
objects that are in close proximity. The following rules
should be followed for proper application:
1. Nozzles should be 3" (80 mm) diameter or larger.
2. 7xB/7x5/7x7 Twin Rod probes should be installed such that
the active rod is >1" (25 mm) from metallic objects such as
pipes, ladders, etc., (a bare tank wall parallel to the probe is
acceptable).
2.4.2.1 To install a rigid twin rod probe:
①
Make sure the process connection is at least 2" NPT or a
flanged mounting.
②
Make sure that there is at least 1" (25 mm) spacing between
the active probe rod and any part of the tank (walls, still-
well, pipes, support beams, mixer blades, etc.). Minimum
stillwell diameter for Twin Rod probe is 3".
③
Carefully place the probe into the vessel. Align the gasket
on flanged installations.
④
Align the probe process connection with the threaded or
flanged mounting on the vessel.
⑤
For threaded connections, tighten the hex nut of the probe
process connection. For flanged connections, tighten flange
bolts.
⑥
Probe can be stabilized by attaching the inactive probe rod
to vessel.
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.
11
Active
probe rod
Inactive
probe rod
①
②
③
④
⑤
⑥
57-600 Eclipse
®
Guided Wave Radar Transmitter
