Alarm Monitoring; Analog Outputs Monitoring - GE Hydran M2-X Instruction Manual

Hydran* M2-X Instruction Manual
7.1.2

Alarm Monitoring

The alarm monitoring method solves the disadvantages of the periodic, visual
monitoring method as follows:
• Connecting the alarm contacts to an alarm panel (or any other SCADA
system) located in the station's control room.
• Continuous alarm monitoring.
• Visual, periodic (weekly) reading of the gas and moisture levels on the display
of the Hydran M2-X's (for details, see Section 7.2).
• Manual logging of gas level readings.
For details on the alarms and relays operation, see Chapter 6.
7.1.2.1 Method Drawbacks
The alarm monitoring method solves the response time inadequacy of the
periodic, visual monitoring method, but does not provide any information to
anticipate and prevent alarms.
Moreover, there is no information immediately available for an evaluation of the
severity of this alarm. A site inspection is required to perform the alarm evaluation.
7.1.3

Analog Outputs Monitoring

The analog outputs monitoring (gas and moisture level monitoring via the analog
output) solves the disadvantages of the alarm monitoring method as follows:
• Connecting the Hydran M2-X's optional analog outputs to a SCADA system.
The Hydran M2-X has analog outputs that allow you to monitor the gas and
moisture level evolution.
• Using a SCADA system to generate alarms based on the collected data.
• Visual, periodic (weekly) reading of the gas and moisture levels on the display
of the Hydran M2-X's (for details, see Section 7.2).
It is recommended to use a SCADA system that offers the following advantages:
• Gas and moisture level readings from the control room.
• Regular processing data analysis.
• Detection of any alarm when the specified alarm conditions are present. The
system's response time must be short enough for the application's needs.
• Safe storage of the history files data in a format that allows easy analysis
from a host computer.
MA-029 Rev. 1.0, 30-Jul-18
Page 121