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Option 30.4 – Flue and inlet sensor temperature units (0 – 1) LV3
This option parameter is only available if option 30.0 is non zero.
This option parameter must be set to select the units for display of both temperatures on either
C or
F.
Option parameter
30.4 value
Meaning
0
C.
The temperature value will be displayed in
C.
1
F.
The temperature value will be displayed in
F.
Please note that temperature limits MUST be set in the correct units.
If a 4-20mA input is used for O2 signal, a NXIATS is required to calculate efficiency in conjunction with a
K type thermocouple measuring flue temperature, connected to the appropriate inputs in the NX02TRIM .
Option 30.5 - Oxygen input function (0/1) LV3
This option parameter can only be set above 1 if option 30.0 is non zero.
Using this option parameter, it is possible to configure the oxygen input for a monitoring function or trim
function. The two functions are explained below:
Option parameter 30.5
value
Meaning
0
Monitor only.
The oxygen value is only used to provide a display of the
measured oxygen level.
1
Closed loop trim.
The oxygen value is used to provide both a display of
the measured oxygen level and a feedback signal for closed loop trim
control function of the NX6100 series control.
Option 30.6 - Oxygen probe calibrate enable (0 – 2) LV3
This option parameter is only available if option 30.0 is non-zero.
This option parameter must be used when calibrating the oxygen probe.
There are three possible values:
Option parameter 30.6
value
Meaning
0
No calibrate.
This is the normal operating condition, where the probe is
used to measure the oxygen concentration in the flue.
1
Calibrate in air.
The probe will be calibrated for 'offset' at the normal
atmospheric oxygen concentration.
2
Calibrate in reference gas.
The probe will be calibrated for 'gain' in a
reference gas with a nominal oxygen concentration the level specified in
option parameter 30.3 (typically 3.0%).
Once this calibration has been successfully completed the values in 30.1 and 30.2 will be automatically
updated.
O 2
O 2
Summary of Contents for NEXUS NX6100 series
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