Agilent 7890
4 Using the control module
H2 Flow
Sets the hydrogen flow into the detector. The flow of hydrogen will be
turned off automatically after turning off the flame. Available for FID, FPD
and NPD detectors.
Air Flow
Sets the air flow into the detector. The flow of air will be turned off
automatically after turning off the flame. Available for FID, FPD and NPD
detectors.
Negative Polarity
Reverses the polarity of detector signal. Available for TCD detector.
Reference Flow
Sets the flow of reference gas for the detector. Available for TCD detector.
Dual
Turns on/off the Dual mode. Available for FPD detector.
Electronics
Turns on/off the detector electronics. Available for ECD detector.
Auto Adjust
Turns on/off the automatic bead voltage adjusting. When checked,
Offset
field becomes active, allowing to set the desired current offset value.
When unchecked,
Bead Voltage
field becomes active, allowing to set the
voltage manually. Available for NPD detector.
Lit Offset
Sets the lit offset value. Available for FID, NPD and FPD detectors.
Bead Voltage
Sets the bead voltage. Field is active only with
Auto Adjust
checkbox
unchecked. Available for NPD detector. It is important to set the proper
voltage for actually installed bead because setting the voltage too high
can destroy the bead irreversibly.
Dry Bead during Warm-up
Turns on/off the Dry Bead function. This causes the detector to wait 5
minutes at 150°C during warming up. Available for NPD detector.
Bead Type
Sets the type of bead installed. It is important to set the proper type of
bead because improper setting can destroy the bead irreversibly.
Available for NPD detector.
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