Concoa 5803007, Инструкция по установке и эксплуатации, Страница: 41 / 60

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..Set Alarm 1, CO2, Hysteresis…
O2 20.9%
..Set Alarm 1, CO2, Hysteresis…
O2 20.9%
..Set Alarm 2, O2, Hysteresis…
O2 20.9%
5.5.9 Set Alarm Hysteresis
CONCOA’s Dual O2/CO2 monitor may be used as a control system. When used to
regulate oxygen or carbon d
ioxide levels the need of a dead band, “hysteresis” may be
required for the alarm relays. This menu will permit the setting of the alarm hysteresis
to a desired concentration of both oxygen and carbon dioxide. When using hysteresis,
the alarm set point now becomes an average alarm setting for an action to occur. When
adding the hysteresis value to the alarm set point, this then defines the alarm and dead
band for an action to occur.
For example, if you require a valve to close at 14.9% oxygen level and to reopen again
at 15.5% oxygen level, you would set the Alarm Threshold at 15.2% and set the
hysteresis value at 0.3%.
Average Alarm set point = 15.2% - Hysteresis 0.3% = 14.9%, Valve Off Average Alarm
set point = 15.2% + Hysteresis 0.3% = 15.5%, Valve On
To access this menu push the joystick down to display the Set Alarm Hysteresis menu.
This will scroll on the digital display.
Push the joystick right to access the
Set Alarm 1, CO2, Hysteresis . It will display a value
00 PPM, (factory default). Pushing the joystick up increases the CO
2
PPM to a maximum
value of 500 PPM. Adjust the digital display until the desired hysteresis value is selected.
After entering the alarm setting push the joystick left to enter the setting. The display will
scroll the following:
Push the joystick down to access the next sub menu; Set Alarm 2, O2, Hysteresis
on the digital display.
100 PPM
O2 20.9%