Guided Wave Radar
Level Transmitter
SIL Safety Manual for
Enhanced Model 705
Software v3.x
This manual complements and is intended to be used with
the Enhanced Model 705 Installation and Operating manual
(Bulletin 57-600 dated August 2005 or later).
Application
The Enhanced Model 705 (HART
®
) Guided Wave
Radar Overfill protection level transmitter can be
applied in most process or storage vessels, bridles, and
bypass chambers up to the probe’s rated temperature
and pressure. The Enhanced Model 705 can be used in
liquids, slurries or solids with a dielectric constant in the
range 1.4–100 to meet the safety system requirements of
IEC 61508/IEC 61511-1.
Benefits
The Magnetrol
®
Model 705 (HART) provides the
following benefits to your operation:
• Overfill protection up to SIL 2 (Safe Failure Fraction
= 91%) as independently assessed (hardware assess-
ment) by exida.com as per IEC 61508/ IEC 61511-1.
• Ability to measure reliably to the very top of the vessel.
Meets TÜV: WHG 19 overfill specifications when
used with Model 7xD, 7xR, and 7xS probes.
• Probe designs to +800 ° F (+427° C),
6250 psig (430 bar) and full vacuum
• Cryogenic applications to -320° F (-190° C)
• IS, XP and Non-Incendive approvals
• Quick connect / disconnect probe coupling.
Functional Safety Manual
