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ENDURA AZ20 & AZ30 | OXYGEN ANALYZER | SI/AZ20/AZ30-EN REV. A
Contents
1 Overview – versions with SIL available.........3
AZ20 safe area oxygen analyzer .....................3
AZ30 hazardous area oxygen analyzer ...............3
2 Acronyms and abbreviations .................3
Safety Function ....................................3
“Safe” Failure ......................................3
Dangerous Failure .................................3
Type A Subsystems .................................3
Hardware Fault Tolerance (HFT) .....................3
Safe Failure Fraction (SFF) ..........................3
PFD The probability of failure on demand ...........3
Proof Test ..........................................3
Safety Integrity Level (SIL) ..........................3
3 Standards and definitions of terms .......... 4
Standard IEC 61508 (2010), Part 1 and 2 ............ 4
Dangerous failure ................................. 4
Safety-related system ............................. 4
Safety function ................................... 4
4 Other applicable documents and papers ......5
5 Zirconia probe as part of the safety function ...
system......................................5
Device-specific data related to functional safety .....5
Failure rates ........................................5
6 Functional safety compliance - prerequisites to
operate the device ...........................6
7 Configuration ...............................7
Locking/unlocking the configuration level ...........7
Reset password ....................................7
Configuration of the transmitter ................... 8
Process display ....................................10
Information level (Operator Menu) ..................10
Configuration Level (Menu) ........................10
Parameter descriptions ............................11
8 Proof test ..................................12
Calibration ........................................12
AZ20 calibration .............................12
AZ30 calibration .............................12
Inspection ........................................12
9 Repair .....................................12
10 SIL certificate ..............................13