Demand Moore Reliability

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I.S Barrier– Alarm Trip & Repeater

TX4-20mA

Four Adjustable Process Relays

Input Hazardous Area

Outputs Safe Area

orSensor

RTDT/C Isolated

4-20mA OutputUniversal Power 90-260Vac / 22-300Vdc

Model SPA2-IS

Demand Moore Reliability

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SPA2-IS Level Control & Alarming

4-20mA – Level

System Diagnostic Alarm

Band Alarm (+/- 3m of mid-level)

To Pump Control

To Valve

AC/DC

4-20mA

Level Transmitter

Hazardous AreaZone 0,1 (Class I, Div1)

DCS

Safe AreaOr Zone 2 (Class I, Div 2)

Demand Moore Reliability

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SPA2-IS Temperature Monitoring

2,3 4-Wire RTD or T/C

Sensor

4-20mA – Temperature

Alarm – High Temperature

To ValveSCADA

Hazardous AreaZone 0,1

(Class I, Div 1)

Safe AreaOr Zone 2 (Class I, Div 2)

AC/DC

System Diagnostic Alarm

Demand Moore Reliability

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SPA2-IS Alarm FeaturesUser Programmable for the standard High Alarm or Low AlarmPLUS SPA2-IS Diagnostic Fault Sensor Failure; O/C or Broken Wire Rate of Change

Stuck Input Alarm Band Alarm

Alarm will trip when the Process Input does not change by a user-set amount over a user-set time period

Alarm will trip when the Process Input falls outside of user-set range; i.e. max deviation from midpoint or High & Low values