Gas Tracer Operator’s Manual, CSA Version
Using Maintenance Mode • 145
Updating the Bump Test Parameters
The BUMP--SET menu item is used to adjust the bump test parameters.
NOTE:
If the BUMP DSP menu item is set to OFF, this menu item does not
appear.
1. Use the AIR
▲
or (SHIFT)
▼
buttons to display the BUMP--SET menu item.
2. Press and release the POWER ENTER button. The values displayed are for
GAS TIME, CHECK (bump test tolerance), CAL TIME, and 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
MAINTENANCE
BUMP--SET
30
30
90
On
MAINTENANCE
GAS TIME
