Servomex xendos 1800 Series, Quick Start Manual

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xendos 1800 Series
10
the analyser sample pipework with dry nitrogen or good quality instrument air for
10 minutes.
3 SETTING UP
3.1 Configuration
The analyser is supplied with a digital display which is always ranged 0 - 100%
Oxygen, an isolated current and non-isolated voltage outputs. These outputs
may be used simultaneously. The push button Range switch on the front panel
and/or the settings of Link 3/4 selects the full scale range of both outputs.
The default analyser configuration is as follows:
Link Parameter Setting Link Parameter Setting
LK 1 Alarm 1 Low = 0.0% O
2
LK 4 Range 2 0 - 25% O
2
LK 2 Alarm 2 High = 21.0% O
2
LK 5 Flow Alarm
“Fitted” if option
included
LK 3 Range 1 0 - 10% O
2
LK 6 Failure Mode* Low on Fault
* Failure Mode - If the sample flow fail alarm option is fitted and a low sample
flow condition is detected then the isolated 4-20mA output signal (depending on
the link setting selected) will go to either 0mA (default) or >20mA to indicate that
this fault is present.
*Note:
Transducer failure will produce a ‘Low on Fault’
condition.
The flow alarm indicator will flash if the sample flow falls below a satisfactory
level and the flow alarm relay will go to the alarm condition. The alarm and relay
are automatically cleared when the flow returns to normal.
To change the above configuration on
housekeeping board:
1.
Switch off the analyser.
2.
Open the hinged front left cover by undoing the four M6 bolts using a
5mm allen key.
3.
Open the hinged display cover with the screw situated in the middle of the
right hand side.
4.
Set the links on the housekeeping board to the required position with
reference to Figure (D). The links should be removed and replaced using
a pair of snipe nosed pliers.