Rod Assembly; Rod Extension Requirements - Siemens Sitrans LR200 Instruction Manual

Rod Assembly

WARNING: For pressure applications, it will be necessary to use PTFE
tape or other appropriate thread sealing compound, and to tighten the
process connection beyond hand-tight.

Rod Extension Requirements

Nozzle I.D.
50 mm (2")
80 mm (3")
100 mm (4")
150 mm (6")
>150 mm (6")
a)
Consult Siemens Milltronics for assistance with nozzle sizes not listed.
b)
Shielded rod antennas are available for these applications.
Page 164 SITRANS LR200 (HART) – INSTRUCTION MANUAL
Optional
Extension
100 mm
(4")
50 mm
(2")
PTFE paste is supplied
with PTFE rod antenna
versions (non-sanitary
type)
a)
Nozzle Height mm (inches)
<100 (4) 100 to 150 (4 to 6)
Application not recommended for 50 mm (2") I.D. nozzles
extension not
required
Notes:
• Water or process fluids must not
enter the connecting threads: this
could cause reflections at the
connection, which will appear as
false echoes.
• Apply a small amount of PTFE paste
to the antenna threads before
threading the antenna together, and
tighten slowly. Ensure that the rod
sections mate securely with no gaps.
Do not apply too much PTFE paste or
the parts will not mate securely.
• Do not use wrenches or pliers. Hand
tighten only (except in pressure
applications: see warning above).
150 to 200 (6 to 8)
longer than 100 mm (4")
50 mm
50 mm
50 mm
extension not required
b)
.
100 mm
100 mm
100 mm
7ML19985JP02