To that end, a layer of protection or alarm system typically referred to as a Safety Instrumented System needs to be implemented in order to protect personnel and the process.
One way to protect personnel and the process is with the Moore Industries STA Functional Safety Trip Alarm as a Safety Instrumented System logic solver by monitoring pressure levels and shutting down the process when a spike or abnormal process disruption occurs.
The exida SIL 2 and SIL 3 certified STA Safety Trip Alarm performs as a logic solver and acts on potentially hazardous process conditions; warns of unwanted process conditions; provides emergency shutdown; or provides on/off control in Safety Instrumented Systems (SIS) and traditional alarm trip applications.
The 4-wire (line/mains-powered) STA models accept a signal input from transmitters, temperature sensors and a wide array of other monitoring and control instruments including:
- Current and Voltage Signals
- Temperature (RTD and T/C) Sensor Inputs
- Resistance and Potentiometer Devices
- Direct Millivolt Sources
SIL 3 capable logic solver for pressure monitoring.
Source: Moore Industries
Two configurable process alarms trip when a monitored process variable falls outside of user-set high and/or low limits. Alarm #3 is set as an input/ instrument fault alarm.