Thermo Scientific DensityPRO NAI Series, Руководство пользователя

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Operation
Application Screens
Thermo Scientific DensityPRO User Manual 4-73
Alarm Functions
The function of the process alarms is to provide a critical signal to the gauge based on
the user’s configuration. There are a total of sixteen alarms available per detector. Each
alarm can be set to trigger on any one of the four measurements. The process alarms
report high-limit alarms and low-limit alarms based on the set and clear point values
and on the action delay time set by the user.
1. Choose an operational mode from the Setup dropdown.

Disable – The alarm is disabled; no alarm action is executed.

Enable – The alarm is enabled. The alarm action will be executed based on Set
Point and Clear Point conditions.

Inhibit – The alarm is temporary disabled. An alarm action may change the
setup of this alarm from Inhibit to Enable.
2. Assign the alarm to a measurement by making a selection from the Measurement
ID dropdown. The alarm will then monitor the selected measurement and trigger
the alarm based on the set point and clear point. The following selections are
available in the Measurement ID dropdown:

None

Measurement #1

Measurement #2

Measurement #3

Measurement #4
3. The alarm is only triggered if the alarm condition exists after a user-defined
amount of time. If the alarm condition does not exist for the designated time, the
alarm will not trigger. Enter the desired wait time before the alarm triggers in the
Action Delay (Sec) textbox.
4. Select an alarm action from the Action dropdown. The available options are listed
below.
a. Do Nothing – No Action is taken.
b. Relay Output A
i. At the Set Point, action must be taken based on the Alarm Action setting
located on the Relay Output A tab.
ii. At the Clear Point, relay operation is reset to Normal operation.
c. Relay Output B
i. At the Set Point, action must be taken based on the Alarm Action setting
located on the Relay Output B tab.
ii. At the Clear Point, relay operation is reset to Normal operation.
d. Current Output A
i. At the Set Point, action must be taken based on the Alarm Action setting
located on the Current Output A tab.