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RayTek MI Miniature Infrared Sensor Thermometer User Manual

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Installation

28 MI

5.4.4TriggerandHoldFunction

TheFTC3inputcanbeusedasexternaltriggerinconjunctionwith

thesoftwaretriggermodesetting“Trigger”or“Hold”.



Figure17:WiringofFTC3asExternalInput

Trigger:AlogicallowsignalattheinputFTC3willresetthepeakor

valleyholdfunction.Aslongastheinputiskeptatlogicallowlevel

thesoftwarewilltransfertheactualobjecttemperaturestowardthe

output. At the next

logical high level, the hold function will be

restarted.



Figure18:FTC3forResettingthePeakHoldFunction

External switch:

- contact relay,

- transistor,

- TTL gate, …

object temperature

output temperature

FTC3

Temp

Time

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