RKI Instruments SDM-2009 PC Controlled Configuration - Manual (Page 35)

Setting Up the PC Controller Program • 30
successfully connects to the program and its instrument parameters are
retrieved by the program. When you select Auto Bump Test, a window pops
up indicating that only sensors tested with GAS 1 and one sensor tested
with GAS 2 will be bump tested in auto bump test.
This screen does not have any meaning for the GX-2009 and is only
applicable to the GX-2012 and Gas Tracer instruments.
If neither box is selected, you will not be able to perform a bump test. The
factory setting is Manual Bump Test selected and Auto Bump Test
deselected. Select the box for the desired operation.
The Auto Bump Test selection also has a Standard GAS and an All GAS
selection. The GX-2009 does not have any non-standard sensors so this
setting does not have any effect on the automatic bump testing of a
GX-2009.
• Interval
The Interval can be set anywhere between 1 and 30 days and is the length
of time that can pass before the program will prompt you to perform a bump
test. The factory setting is 30 days.
Use the arrows to the right of the current interval or highlight the current
setting and type in the desired value. The value you type in must be valid
(between 1 and 30).
• Gas Exposure Time
The Gas Exposure Time can be set to 30 (factory setting), 45, 60, 90, 120
seconds or Auto and is the length of time that gas is applied to the
instrument. If you select Auto, the PC Controller program will apply gas for
the appropriate amount of time based on your instrument sensor
configurations.
To change the Gas Exposure Time, click on the current setting. A drop
down menu will appear. Select the desired time.
• Tolerance
The Tolerance can be set between 10% and 50%. The factory setting is
50%. It determines how close the instrument gas reading must be to the
calibration gas concentration for each channel during a bump test in order
to pass the bump test. It is defined as a percentage of the calibration gas
concentration.The amount that the instrument gas reading differs from the
calibration gas concentration must be equal to or less than this percentage