ABB Endura AZ20 series, Руководство пользователя

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Endura AZ20 series probe
Combustion oxygen monitor 4 Connections
22 IM/AZ20P–EN Rev. G
4.4 Gas and Air Connections
Two test gas inlets, one reference air inlet and one vent inlet are
located on the probe head. An external earth (bonding) point is
also provided.
4.4.1 Restrictors
Systems can be ordered with or without restrictors – refer to
Sections 3.5.2 and 3.5.3 on pages 9 and 10 for schematics of
all configuration options.
Where restrictors are not fitted, it is necessary to add flowmeters
to the test gas lines and reference air line.

on systems with restrictors, set pressures to 1 bar (15 psi)
= 2.2 l / min (0.58 US gal / min)

on systems without restrictors, pressure is still set to 1 bar
(15 psi) then flow is restricted by valves on flowmeters
4.4.2 Connection Types
Note.
Connection types comprise:
 1
/
4
NPT female threaded entry supplied with
1
/
4
in OD
compression fitting
or
 1
/
4
BSP female threaded entry supplied with 6 mm OD
compression fitting
4.4.3 Orientation of External Connections
Fig. 4.5 shows the 2 orientations for test gas, reference air and
the vent.
*ABB recommend our 5 µm / Oil Coalescing Filter Regulator – see
Appendix
D
, page 36.
Caution. Only use clean dry oil-free instrument air,* or
traceable certified bottled test gas mixtures of O
2
/ N
2
.
Fig. 4.5 Integral and Remote Endura AZ20 Probe
Gas and Air Connections
TG2
TG1
Ref. Air
TG2
TG1
Ref. Air
Vent
Vent
Endura AZ20 Probe with
Remote Transmitter
Endura AZ20 Probe with
Integral Transmitter