ABB Endura AZ20 series User Manual

Endura AZ20 series probe
Combustion oxygen monitor Appendix C – Using an External Automatic Calibration Panel
IM/AZ20P–EN Rev. G 35
Appendix C – Using an External Automatic Calibration Panel
Referring to Fig. C.1, relay outputs 1 and 2 from the Endura AZ20 transmitter can be used to switch solenoid valves in an external
automatic calibration panel to provide AutoCal functionality. The external automatic calibration components must be powered by an
independent supply.
Warning. Isolate the Endura AZ20 transmitter and external automatic calibration panel before making AutoCal connections.
Fig. C.1 Schematic – Example of External Automatic Calibration Panel
Relay 1 and 2 Outputs
– see IM/AZ20E–EN for Connections
Reference
Air
Test Gas 1
Test Gas 2
Probe
Test Gas
Connections
*Solenoid
Valve 1
*Solenoid
Valve 2
Reference
Air
Tes t
Gas
External Automatic Calibration Panel
Test gas pressure 1 bar (15 psi)
= 2.2 L / min (4.662 scfh)
Endura AZ20 Transmitter Relay Outputs
Refer to Section 3.4, page 7 for test gas
and reference air pressures
*24 V, 2 W or relay NO / NC

ABB Endura AZ20 series Specifications

General

Brand	ABB
Model	Endura AZ20 series
Category	Measuring Instruments
Language	English