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Sensor Configuration - Honeywell GasAlertQuattro Operator's Manual

1, 2, 3, and 4 gas detector
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Sensor Configuration

• Sensor Disabled: Enables/disables the selected sensor.
Use extreme caution when disabling a sensor. The
disabled sensor cannot detect and alarm against the
applicable gas.
• Calibration Gas (ppm): Define the span gas
concentration for each sensor. The span gas concentration
must match the span value on the gas cylinder.
• Calibration Interval: Define how often a sensor should be
calibrated (0-365 days) in the Calibration Interval (days)
field. A different calibration interval can be defined for each
sensor.
BW recommends that the sensors be calibrated at least
once every 180 days (6 months).
• Bump Interval: Define how often a bump test should be
performed for each sensor (0-365 days) in the Bump
Interval (days) field. A different bump interval can be
defined for each sensor.
• Low Alarm: Define the low alarm setpoints for each
sensor. Refer to Sample Gas Alarm Setpoints for factory
defined alarm setpoints in the GasAlertQuattro Technical
Reference Guide.
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User Options and Sensor Configuration
• High Alarm: Define the high alarm setpoints for each
sensor. Refer to Sample Gas Alarm Setpoints for factory
defined alarm setpoints in the GasAlertQuattro Technical
Reference Guide.
• TWA Alarm: The time-weighted average (TWA) is a safety
measure used to calculate accumulated averages of
gases. Using the US Occupational Safety and Health
Administration (OSHA) method or the American
Conference of Governmental Hygienists (ACGIH) method,
an average is calculated to ensure the detector alarms
when the TWA has accumulated.
• STEL Alarm: The short-term exposure limit (STEL) is the
maximum permissible gas concentration a worker can be
safely exposed to for short periods of time (5-15 minutes
maximum).
• Correction Factor (LEL): The Correction Factor option
defines compensation factors for hydrocarbons other than
methane. The correction factor is only applicable to LEL
and can only be applied if the LEL sensor has been
calibrated with methane. Detector operation using LEL
correction factors has not been tested by BAM.
• STEL Interval: Define the short-term exposure limit
(STEL) from 5-15 minutes (toxic sensors only).
• TWA Period (hours): Define the time-weighted average
(TWA) from 4-16 hours (toxic sensors only).
• TWA Method: Select either the US Occupational Safety
and Health Administration (OSHA) or the American
Conference of Governmental Industrial Hygienists
(ACGIH) TWA calculating method.
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