ABB Endura AZ20 series

Combustion Oxygen Monitor
Endura AZ20 Series Probe 5 Dismantling and Reassembly – Probe
IM/AZ20M–EN Rev. B 33
Referring to Fig. 5.18:
16. Fit test gas to sensor tube
M and reference air tube ?N
17. Fit test gas 1 and 2 tubes ?O
18. Push the 2 terminal plugs P into the terminal blocks and
locate / tighten the terminal plug M3 retaining screws
?Q
19. Refit the probe end cap.
20. If the external test gas 2 connection is to be used, remove
the test gas 2 blanking plug R using the 6 mm wrench
supplied and fit correct connector S (NPT or BSP).
21. Record AutoCal upgrade details on the existing
Commissioning Label T.
If a new cell has been fitted, record the AutoCal upgrade
details and the new cell data details on the new
Commissioning Label and re-calibrate the probe using the
new cell data – refer to the transmitter User Guide
(IM/AZ20E-EN).
22. Re-install the probe as detailed in the probe User Guide
(IM/AZ20P–EN).
23. At the transmitter, set the 'Calibrate / AutoCal Hardware /
Hardware Type' to 'Internal' – refer to the transmitter User
Guide (IM/AZ20E–EN).
24. Make gas supplies to the probe and electrical supplies to
the transmitter – refer to the transmitter User Guide
(IM/AZ20E–EN) for electrical supplies and the probe User
Guide (IM/AZ20P–EN) for gas and reference air supplies.
Fig. 5.18 Connecting the Gas / Air Tubes and
Recording Commissioning Details