ABB Zirconia Oxygen Analyzer High Temperature Version ZDT–GP Series

The ZDT Oxygen Analyzer is designed for continuous

monitoring of oxygen content in applications using 'in situ'

ZGP2 probes.

Operation and programming of the ZDT Analyzer is via four

tactile membrane switches and a digital display located on the

front of the instrument. Two l.e.d.'s on the front panel provide

local alarm indication.

In operation, the instrument can display measured % oxygen,

cell mV, or cell temperature. Set up of alarm, retransmission

and calibation parameters is achieved in programming mode,

where key parameters are protected by a five-digit security

code.

Measured %O2 values can be retransmitted to remote

equipment using the retransmission output facility. The range

of values retransmitted can be set anywhere within the

instrument's display range of 0 to 25% O2. subject to limits

detailed in Section 7.7.

Remote alarm indication is provided by two relay outputs.

Relays are programmed to activate when the oxygen level

moves either above or below a pre-defined set point. The

second alarm relay can also be used as a 'general alarm'

which activates in the event of an instrument or system fault.

An optional external reference air unit is used to provide

reference air supply for the ZGP2 probe. If this unit is not

specified, reference air must be supplied to the probe from an

alternative source.

For full installation and operation details of the ZGP2 probe

refer to the operating manual, IM/ZGP2.