Gas Submenu; Gas Level; Hourly Trend - GE Hydran 201 i Instruction Manual

Chapter 4 • Hydran 201Ti's Displays and Menus
4.5.2

Gas Submenu

The Gas submenu allows the user to set the parameters of the conditions that trigger:
• The gas alarm: A High or High-High alarm is triggered if an alarm condition (GasLevel,
HourlyTrend or DailyTrend) exceeds the corresponding High or High-High alarm set
point for a period of time greater than the delay.
• The fail alarm: It is triggered if an alarm condition (GasLevel, HourlyTrend or
DailyTrend) is below the corresponding Low or Low-Low alarm set point for a period
of time greater than the delay.
The operation of the alarms is explained in detail in Chapter 10.
4.5.2.1

Gas Level

This function gives access to the gas level High and High-High alarm parameters:
• GasLevel: Current reading of gas level, in ppm. Same value as the one shown in the
Main Display mode.
• GasAlr H: Set point of gas level High alarm.
• GasAlr HH: Set point of gas level High-High alarm.
• GasAlr Delay: Alarm delay for all gas level alarms' set points.
• GasAlr L (Extended Menu only): Set point of gas level Low alarm.
• GasAlr LL (Extended Menu only): Set point of gas level Low-Low alarm.
4.5.2.2

Hourly Trend

This function gives access to the hourly trend High and High-High alarm parameters:
• HourlyTrend: Current reading of hourly trend, in ppm/x hours. Same value as the one
shown in the Main Display mode.
• HourTrAlr H: Set point of hourly trend High alarm.
• HourTrAlr HH: Set point of hourly trend High-High alarm.
• HourTrAlr Delay: Alarm delay for all hourly trend alarms' set points, in % of the
period.
• HourlyTr Period (Extended Menu only): Period of the hourly trend (number of hours
used to calculate the gas level variation).
• HourTrAlr L (Extended Menu only): Set point of hourly trend Low alarm.
• HourTrAlr LL (Extended Menu only): Set point of hourly trend Low-Low alarm.
4-16 Rev. 6, March 2011 Part 17997