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")
n/r: extension not required
* Consult Siemens Milltronics for assistance with nozzle sizes not listed.
** Application not recommended for 50 mm (2") I.D. nozzles longer than 100 mm (4"). Shielded
rod antennas are available for these applications.
Page 54 SITRANS LR 200 (PROFIBUS PA) – INSTRUCTION MANUAL
Optional
100 mm
Extension
(4")
50 mm
(2")
PTFE paste is supplied
with PTFE rod antenna
versions (non-sanitary
type)
Nozzle Height mm (inches)*
<100 (4) 100 to 150 (4 to 6)
n/r
n/r
n/r
n/r
n/r
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)
**
50 mm
50 mm
50 mm
n/r
**
100 mm
100 mm
100 mm
n/r
7ML19985HP01