Endress+Hauser Liquiphant M/S, Functional Safety Manual

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Liquiphant M/S with electronic insert FEL58 + Nivotester FTL325N
Hauser 43
Report for versions II to VI
System-specific data
Company
Measuring point/TAG no.
Facility
Device type/Order code
Serial no. of Liquiphant(s)
Serial no. of Nivotester
Name
Date
Signature
Operating mode, density range and version (please tick appropriate box)
Mode of operation MIN safety 
MAX safety 
Density switch Setting >0.7 
Setting >0.5 
Version II One Liquiphant at one channel (1oo1) 
III One Liquiphant (1oo1), output relay CH2 and CH3 switched in series (1oo2) 
IV Two Liquiphants (1oo2), output relay CH1, CH2 and CH3 switched in series (1oo3) 
V Three Liquiphants, evaluation e.g. by PLC (2oo3) 
VI Three Liquiphants, 1 x SIL, 2 x level control (∆s) 
Commissioning or proof test report
Test sequence A Approach the level 
Remove and immerse in a medium of similar density and viscosity 
B Simulation on Liquiphant by pressing the test button
1)

Simulation on Nivotester by pressing the test button 
C Check the switch point under reference operating conditions
2)

Version
Test step Terminal II III IV V VI Actual value
Step 1 4+5
3)
(GOOD state) 22+23
3) 4)
Switch is closed 26+27
3) 4)
Step 2 4+5
3)
(demand mode) 22+23
3) 4)
Switch is open 26+27
3) 4)
Step 3 4+5
3)
(GOOD state) 22+23
3) 4)
Switch is closed 26+27
3) 4)
Conclusion Passed  Failed 
1) Only for Liquiphant with electronic insert FEL58 + Nivotester FLT325N.
2) For restrictions and immersion depths see, →  35
3) Not applicable as channel is not used.
4) Not relevant for SIL, is used for level control (∆s).