39 P5628.1600 Rev A
Alarm Enable/Disable
Enable or Disable audio visual alarms for selected alarm.
Note:
The current applied value is highlighted
by the ‘selection tick’.
4-20mA Outputs
The Air XD offers two 4-20mA outputs. Each 4-20mA output requires two parameters to be selected
and configured to determine the functionality of each analogue output.
•
Assigned a PM Size/Channel
(PM1.0, PM2.5, PM4.25, PM10.0 and TSP)
Select one of the four configured PM sizes or TSP as the alarm source.
•
Assigned a data channel
(Live, Average 1 or Average 2)
Select one of the three data sets to assign the selected 4-20mA output to.
•
Assigned the full-scale range of the channel
For example: a full-scale range of 2000µg/m³ will output 20mA for a value greater or equal to 2000
µg/m³ and for a value of 0 µg/m³ the channel will always output 4mA.
A full-scale range of 6553.5 mg/m³ will output 20mA for a value greater or equal to 6553.5 mg/m³ and
for a value of 0 mg/m³ the channel will always output 4mA.
•
Enable/Disable the channel
A disabled channel with output 0mA.
During instrument start up and initialisation, each 4-20mA output will perform a calibration routine which
involves sweeping the output from 0-20mA before returning to 4mA. After this has been completed, the
output will return to configured functionality.
Alarm Settings 1 >
Alarm Settings 2 >
Set Alarm EN/DIS
Summary of Contents for TX8005 Air XD General Purpose
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