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13. CHANGING THE INSTRUMENT SET-UP
The Impulse XP is provided with a means for the user to change the following
aspects of its operation:
• Alarm 1 set point
• Alarm 2 set point
• Latching/non-latching alarms (factory default is non-latching)
• STEL alarm set point
• TWA alarm set point
• Set the confidence signal as a beep, flash, beep and flash or none
• Set a new password (or disable the password function), which allows
access to change the gas concentration for carrying out a span calibration
To access these functions press and hold both the Up and Down buttons on the
side of the instrument for 3 seconds. The Impulse XP will generate two beeps
and 2 flashes, and enter the Set-up mode.
The following display will be shown, while the two buttons are being pressed
and held:
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In set-up mode, pressing the Up or Down button selects the function and
pressing the On/Off button activates the function, so that the displayed value
may be changed. For each value, pressing the Up button increases the
displayed value, pressing the Down button decreases the displayed value,
and pressing the On/Off button sets the displayed value. Once the displayed
value has been changed and accepted, then the new value is stored within the
instrument. The value can be returned to its previous value by pressing the
Up and Down buttons together, e.g.
Prompt
UP button
to increase
ON/OFF button
UP+DOWN
to accept
button to cancel
If no button is pressed within 20 seconds or both buttons are pressed together
the Impulse XP will revert back to its normal gas monitoring mode.
The flowchart diagram on the following page explains the process.
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