4
Instrument Preparation and Use
Configuration
Operation
Zero, Calibration, and Bump Testing
Configuration
Read and understand all configuration instructions before configuring the unit.
As noted in "Recommended Practices," the unit should be configured before first use, when there is a
change in the installed sensor type (e.g., H
2
S sensors are replaced with CO sensors), and as needed. Only
qualified personnel should access the configuration mode and adjust the unit's settings.
Configuration mode can be accessed only during the start-up sequence (see “Start-up and Shutdown”).
Review the unit's configured settings for compliance with company policy and any applicable regulations,
laws, and guidelines as issued by regulatory agencies and government or industry groups. Determine
which settings, if any, require adjustment.
Choose alarm- and warning-related options that maximize safety within the air-sampling environment.
When the unit is in configuration mode, the following apply:
• When the device is in the configuration mode, the blue led will flash until the user exits the
configuration mode.
• The tool icon ( ) displays in the lower right corner of each screen.
• With successive short presses of the on-off-mode button ( ), the user can scroll through the
configuration loop.
• The enter button ( ) is used to start the editing process or start a task (e.g., zero).
• When editing a value, the enter button ( ) increments the value and the on-off-mode button ( ) saves
the value.
• When editing a value, once the last value in the range is reached, the display starts again with the first
value.
• When both buttons ( and ) are simultaneously pressed and held for three seconds, the unit leaves
configuration mode; it enters operation mode and the home screen is activated.
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