ABB Endura AZ20 series, Руководство пользователя

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Endura AZ20 series probe
Combustion oxygen monitor Appendix B – Endura AZ20/ZFG2 Replacement Probe
34 IM/AZ20P–EN Rev. G
B.3 ZMT Transmitter Connections
B.3.1 Disconnecting the Existing ZFG2 Probe
Referring to Fig. B.3:
1. Unlock and open the door
A
, remove the 2 retaining
screws
B
and remove the mains protection plate
C
.
2. Disconnect wires from heater terminal
D
, cell terminal
E
and thermocouple terminal
F
and loosen conduit
entry gland
G
.
3. For probes using the conduit’s Reference Air line,
disconnect existing reference air supply pipe
H
, remove
the conduit and proceed to step 5.
4. For probes using an external Reference Air connection,
leave the existing reference air supply
I
in place.
B.3.2 Connecting the Endura AZ20/ZFG2 Replacement
Probe
Referring to Fig. B.3:
1. Pass the new conduit through entry gland
G
and tighten
the gland.
2. Make connections to heater terminal
D
, cell terminal
E
and thermocouple terminal
F
, as listed in Table B.2.
3. For probes using the conduit’s Reference Air supply,
connect conduit reference air line
H
.
4. Refit the mains protection plate
C
and secure it with the
2 retaining screws
B
.
5. Close and lock the door
A
.
Warning. Before disconnecting or connecting conduit,
ensure the power supply, any powered control circuits and
high common-mode voltages are switched off.
Note. For transmitters without internal pumps, the
Reference Air connection is made directly to the probe’s
external 'Ref. Air' connection – see Fig. B.1, page 30.
ZMT Terminal Connection Wire
H Heater Brown
H Heater Blue
E Heater Earth
Green /
Yellow
Cell + Oxygen Input (+ve) Red
Cell – Oxygen Input (–ve) Blue
Cell SCN Oxygen Input Screen Braid
TC+ Thermocouple (+ve) White
TC– Thermocouple (–ve) Blue
Table B.3 Conduit Connections at ZMT Transmitter
Fig. B.5 Endura AZ20/ZFG2 Replacement Probe
Conduit Connections at ZMT Transmitter
A
B
C
H
D
E F
I
G