Periodic I Nspections And Calibration - Honeywell 90DM4 User Manual

Specif ications
P eriod ic Insp ec tions and C alib ration

Periodic I nspections and Calibration

T h is unit req uires c alib ration. T h e c alib ration freq uenc y is d ep end ent
up on op erating c ond itions, inc lud ing op erating und er ex trem e
tem p eratures, ex p osure to c ontam inants or g as c onc entrations. A
c alib ration insp ec tion m ust b e inc lud ed as p art of routine m aintenanc e
to ensure p rop er op eration of th e g as d etec tion unit.
If unit sp an or z ero c annot b e ad justed , th e sensor m ay b e ap p roac h ing
its end -of-life and m ust b e rep lac ed .
90DM4 User Manual 27
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Honeywell
2/07