ROUTINE MAINTENANCE (CONTINUED)
LEAK TEST
The 6103 has an automated Leak Test function, to determine if the system has
any internal leaks.
To run the Leak Test:
1. Be sure there is a source of gas connected to Port 1 at 25 PSIG.
2. Select the LEAK function from the Main Menu, and then press START. The
software will acquire Atmospheric Pressure, and then prompt for the outputs
to be capped.
3. Cap the Output Manifold, Vent and Exhaust ports. Use the caps supplied
with the system.
4. Press OK. The Leak Test will fill the volume of the system plumbing with
gas from Port 1 to 5 PSIA above atmospheric pressure, and use pressure
decay to calculate the leak rate. Any leak in excess of the maximum leak
specification for the system (3 SCCM) will be displayed.
ADJUSTING THE PHOTOMETER SAMP/REF INTENSITIES
For the best photometer resolution, the sample and reference intensities should
be set for 500,000 to 850,000. The intensities can be seen in the PHOTO MODE
in the DETAIL screen selection. In the PHOTO mode, with the photometer pump
off, these intensities should be approximately the same. Each number updates
every 4 seconds. However, the update of each number is staggered by 4
seconds.
As the photometer lamp ages, it will be necessary to increase these intensity
values. To increase or decrease these values within the range outlined above,
perform the following:
1. From one of three main menus, enter the SYSTEM mode and scroll down to
CALIBRATE PHOTO. Use the ENTER key to select the mode.
2. Scroll down to the INTEG TIME field.
3. To increase the intensities, increase the INTEG TIME value in increments of
1ms to 5 ms. Each time you change the INTEG TIME and press the ACCEPT
key, the system will run a short internal calibration sequence and exit back to
the READY screen. Be careful not to change the OFFSET and GAIN values
in this mode, as this will affect the photometer accuracy. The OFFSET and
GAIN values are adjusted in the photometer calibration procedure in the next
section of this manual. Reenter the PHOTO mode to see the effect of the
changes.
6103 SERVICE MANUAL JANUARY 2009
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