Limit
The Series 97 limit controller is added to thermal applications to limit over- or under-tem-
perature conditions. The Series 97 controller provides safety assurance against instances
where a high temperature runaway condition could occur from a shorted input sensor or an
output device that could fail in a closed position. A limit condition is latched and therefore
requires operator intervention to clear it.
The Series 97 is recommended for any application where thermal runaway could result in
large product scrap costs, affect operator safety, cause damage to equipment or create a fire
hazard.
5.2 ■ Features Watlow Series 97
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