How to set the alarm level
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Dear everyone, I would like to ask how the alarm levels for signals such as temperature, pressure, and liquid level are set. For example, what does level 1 warning mean, level 2 interlock shutdown, and level 3 alarm?； Is this setting reasonable?
Generally, there are high limits, very high limits, low limits, and very low limits. First, a low or high alarm is issued, followed by a low-low or high-high alarm, and finally an interlock action takes place.
If set up this way, it will result in many alarm records. I want to minimize the number of alarm records by shutting things down via interlock before an alarm is triggered.
Call the police first, then initiate interlocking – that’s the standard procedure. Don’t be afraid of triggering alarms; find ways to control the process operations so that no alarms are triggered.
Generally, it’s level 2: level 1 alarm, with two-level interlock. There are no national standards for alarm management; you can refer to IEC 62682, as well as ISA 18.2 and EEMUA 191. Generally, once per hour. These days, there are too many reports made, and the operators have become desensitized