Siemens LC 500 Manual De Usuario
Page 20
SITRANS LC 500 – INSTRUCTION MANUAL
7ML19985GE01
mmm
mm
Inst
allat
ion
SITRANS LC 500: Installation
Handling Electrodes
Notes:
• Installation shall only be performed by qualified personnel and in accordance with
local governing regulations.
• This product is susceptible to electrostatic discharge. Follow proper grounding
procedures.
WARNINGS:
• Disconnect the device before any welding is carried out in the vicinity
of the instrument.
• Provide protection when the solid-state switch is activating an
external relay to prevent possible switch/relay damage resulting from
inductive spikes generated by the relay coil. (See
state switch on page 21 for details.)
WARNINGS:
• Do not scratch or gouge the PFA electrode insulation since this could
reduce the integrity of the insulation and the useful life of the
electrode.
• Be careful with an enamel-insulated electrode
1
.
• Do not damage the insulation jacket on the electrode during shipping,
packing, and installation
2
. Any damage to the electrode can prevent
proper performance.
• (ATEX 100): Precautions MUST be taken to avoid ignition due to
hazardous electrostatic discharges:
a. Where an isolated probe is used in gas, vapor, or a non-
conductive liquid that is potentially explosive, requiring
apparatus group IIC equipment.
b. Where the probe is used in a potentially explosive dusty
atmosphere.
1.
Normally the enamel insulation is protected by a stilling well, which is part of
the design.
the design.
2.
Most electrodes use PFA insulation, a very dense and reliable type of Teflon®
that prevents leakage and corrosion of the metal electrode and acts as an
insulator when conductive materials are being measured.
that prevents leakage and corrosion of the metal electrode and acts as an
insulator when conductive materials are being measured.