Test Gas And Reference Air Supply Configurations - Non-Autocal Systems Without Restrictors - ABB Endura AZ25 Series User Manual

Endura AZ25 series probe
Combustion oxygen monitor
3.5.7 Test gas and reference air supply configurations – non-AutoCal systems without restrictors
Reference air supply:
0.3 to 0.5 l/min
(0.64 to 1.06 scfh)
ABB flowmeter adjusted to
0.3 to 0.5 l/min
(0.64 to 1.06 scfh) STP
Clean dry oil-free instrument air
INPUT: 10 bar (145 psi) max.
OUTPUT: 1 bar (15 psi) max.
5 µm / Oil
coalescing
filter regulator
Test gas 2 (optional) / bottled gas
adjusted to 1 bar (15 psi) output
Fig. 3.11 System using air as test gas 1 and
bottled gas as (optional) test gas 2
14
Endura AZ25 probe
Shut-off valve for test
gas runs >10 m (33 ft.)
Test gas supply –
1 l/min (2.118 scfh)
ABB flowmeter
adjusted to 1 l/min
(2.118 scfh) STP
3-Way
valve
Shut-off valve for test
gas runs >10 m (33 ft.)
Test gas supply –
1 l/min (2.118 scfh)
ABB flowmeter
adjusted to 1 l/min
(2.118 scfh) STP
Clean dry oil-free instrument air
INPUT: 10 bar (145 psi) max.
OUTPUT: 1 bar (15 psi) max.
3-Way
valve
Test gas 1 / bottled gas adjusted
to 1 bar (15 psi) output
Test gas 2 (optional) / bottled gas
adjusted to 1 bar (15 psi) output
Fig. 3.12 System using 2 bottled test gases
3 Mechanical installation
Endura AZ25 probe
Reference air supply:
0.3 to 0.5 l/min
(0.64 to 1.06 scfh)
ABB flowmeter
adjusted to
0.3 to 0.5 l/min
(0.64 to 1.06 scfh)
STP
Reference
air pump
OR
5 µm / Oil
coalescing
filter regulator
OI/AZ25P–EN Rev. E