Moore Industries STA SIL 2 and SIL 3 Capable Programmable Current/Voltage and RTD/Thermocouple Safety Trip Alarms

Part of the Moore Industries FS FUNCTIONAL SAFETY SERIES, 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 (see Figure 1) including:

• Current and Voltage Signals

• Temperature (RTD and T/C) Sensor Inputs

• Resistance and Potentiometer Devices

• Direct Millivolt Sources

Dual Process Alarms, One Fault Alarm

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