PPC Connect . 239
Reference Settings
Relays
The Relays settings are accessed on the Tools Menu System option screen. Use the drop down screen to
set the type of valve.
Zeroing and Calibrating the PPC Modules
The Clarus GC gas modules have been calibrated at the factory and are ready to use. For good
laboratory practices and your own internal validation protocol, you may wish to recalibrate at installation
with your own flow measuring device.
All carrier gas modules have been calibrated at the factory with helium. If you are using a different gas,
you must enter the appropriate gas and recalibrate. Detector gas modules must be recalibrated if you
are using a different gas in your laboratory. In the factory, the TCD reference gas and the PID make-up
gas have been calibrated with helium and the ECD make-up gas with nitrogen.
Zeroing and calibrating PPC modules consists of the following steps:
• Zeroing the PPC gas modules (Gas turned off)
• Setting the reference temperature and pressure
• Calibrating the PPC carrier gas modules and/or PPC detector gas modules (Gas turned on)
The calibration information is stored in a reserved area of the battery-backed memory.
Zeroing the PPC Gas Modules
Before zeroing the PPC gas modules:
• Make sure that the Clarus GC has been properly installed and all gases are connected.
• Turn on the Clarus GC power and
allow the GC to warm up for approximately 15 minutes
before calibrating any gas.