Preamp: Injects an artificial test signal into the
Preamplifier mounted on the Measurement Cell to
verify that the Preamplifier, cabling and electronic
circuitry on the main controller PCA is operating
correctly. When in this Diagnostic Mode, adjust the
Test Meas Pot from 0 - 255. This will produce a
change in the concentration voltage as well as the
indicated gas concentration. Adjust the Test Ref Pot
from 0 - 255 to produce a change in the reference
voltage.
3.4.16 Internal Pump Menu (Option)
Main Menu → Service Menu → Diagnostics Menu → Internal Pump Menu
This menu only appears when the internal pump option is installed. Setting the Pump Control to
MANUAL will automatically disable the valve sequencing.
Figure 58 – Internal Pump Menu Screen
The desired sample flow target.
The current pressure in the measurement cell.
Current gas flow. This is only accurate when reading close to the
flow calibration point.
This field allows the internal pump to be turned On or Off. This
field is only editable when the Pump Control field is set to
MANUAL.
Set to MANUAL to disable the automatic pump control. AUTO
allows the flow PID to modify the pump coarse and fine settings.
START will transition to AUTO after one second.
Internal pump speed control (Coarse). This field is only editable
when the Pump Control field is set to MANUAL.
Internal Pump speed control (Fine). This field is only editable when
the Pump Control field is set to MANUAL.
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