RKI Instruments Gas Tracer - Manual (Page 167)

Gas Tracer Operator’s Manual Using Maintenance Mode • 159
AUTO CAL. The cursor on the left of the screen shows which
setting is associated with the parameter shown at the bottom of the
screen. Use the AIR▲ or (SHIFT)▼ buttons to scroll up or down
along the list.
3. To update the GAS TIME setting, with the cursor next to the gas
time and with GAS TIME displayed along the bottom of the screen,
press POWER ENTER. The factory setting is 30 seconds. The value
will begin to flash. Use the AIR▲ or (SHIFT)▼ buttons to select a
new gas time. The GAS TIME is the amount of time that the
instrument is exposed to gas during a bump test. The time
increments are 30, 45, 60, and 90 seconds. Once a value is selected,
press and release the POWER ENTER button to save it. The value
will stop blinking.
4. To update the bump test tolerance, use the (SHIFT)▼ button to
scroll to the CHECK value. The factory setting is 30%. This is the
bump test tolerance value and is represented as a percentage. It is
the percentage that the bump test reading can differ from the actual
gas concentration. If the bump test reading differs more, the bump
test will fail. With the cursor next to the check value and CHECK
displayed along the bottom of the screen, press and release
POWER ENTER. The value will begin to flash. Use the AIR▲ or
(SHIFT)▼ buttons to select a new threshold value. The available
values are 10, 20, 30, 40, and 50. Once a value is selected, press and
release the POWER ENTER button to save it. The value will stop
blinking.
5. To update the CAL TIME, use the (SHIFT)▼ button to scroll to the
CAL TIME value. The factory setting is 90 seconds. This is the
length of time the instrument will remain exposed to calibration
gas after a failed bump test if AUTO CAL is set to On. The bump
test time is deducted from the calibration time. For example, if the
CAL TIME is set to 90 seconds and the GAS TIME is set to 30
seconds, if the bump test fails, the Gas Tracer will only be exposed
to gas for an additional 60 seconds. With the cursor next to the cal
time value and CAL TIME displayed along the bottom of the
30
30
90
On
MAINTENANCE
GAS TIME