RKI Instruments SDM-E2 - Manual (Page 19)

Setting the Operational Parameters in Edit Mode • 14
Air Sample Time (AIR TIME)
The air sample time can be set separately for bump testing and calibration. It is the
length of time that the SDM-E2 will draw air through the AIR fitting on the back of the
docking station. Air is drawn during a bump test or calibration before an air adjust
operation and to purge calibration gas from the system after calibration gas has been
drawn through the GAS 1 or GAS 2 fittings on the back of the docking station.
Calibration Gas Sample Time (GAS TIME)
The calibration gas sample time can be set separately for bump testing and
calibration. It is the length of time that the SDM-E2 will draw calibration gas through
the GAS 1 or GAS 2 fittings on the back of the docking station during a bump test. If
the GAS TIME is set to AUTO, the SDM-E2 applies calibration gas for the appropriate
amount of time based on the sensors installed in the EAGLE 2.
Bump Test Check Tolerance (CHECK)
The bump test check tolerance only applies to bump testing. It determines how close
the EAGLE 2 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 EAGLE 2 gas
reading differs from the calibration gas concentration must be equal to or less than
this percentage of the calibration gas concentration. For example, if the tolerance is
set to 50%, and the %LEL calibration gas concentration is 50% LEL, then the bump
test gas reading for the LEL channel on the EAGLE 2 must be 50 %LEL ± 25 %LEL.
Automatic Calibration (AUTO CAL)
Automatic calibration only applies to bump testing. It can be set to on or off. If it is set
to on, then the docking station will automatically perform a calibration if a bump test
fails.
Calibration Gas
Sample Time GAS
TIME
• AUTO
• 30 seconds
• 45 seconds
• 60 seconds
• 90 seconds
• 120 seconds 30 seconds AUTO
Bump Test Check
Tolerance CHECK • ± 10%
• ± 20%
• ± 30%
• ± 40%
• ± 50% 50% n/a
Automatic
Calibration AUTO
CAL
• On
• Off On n/a
Table 3: Bump Test & Calibration Parameter
Parameter
Display
Tag
Available
Choices
Bump Factory
Setting
Cal Factory
Setting