SD175F/00/EN/09.09
71103335
Functional Safety Manual
Liquiphant S, Nivotester
FDL60/61, FTL670
Level limit measuring system
FTL670
s
Application
Overfill protection or maximum detection of all types of
liquids, to meet the particular requirements for safety-
related systems as per IEC 61508.
The measuring system meets the requirements for
• Functional safety in accordance with IEC 61508
• Explosion protection by intrinsic safety
• Electromagnetic compatibility as per EN 61326 and
NAMUR recommendation NE 21
• Electrical safety in accordance with IEC/EN 61010-1
Your benefits
• For overfill protection up to SIL 3
– independently assessed (Functional Safety
Assessment) by TÜV Süd in accordance with
IEC 61508
• Suitable for liquefied gases according to VdTÜV,
Merkblatt 100
– for tank categories B and C
– no annual recurrent test required
• Permanent self-monitoring
• Error message for circuit break and short-circuit
• Functional test of follow-up devices with press of
button or remote operation
• Monitoring for corrosion on the tuning fork of the
sensor
• No calibration
• Insensitive to external vibration
• Easy commissioning
To Next Page
Need help?
General
