Section 3 — OPERATION
3–5
TEMPS
TEMPERATURE
TEMPS
TEMPS
TEMPERATURE
TEMPERATURE
Interferences
dans le chemin
de visee
Espaces
entre les
produits
Points chauds
sur le produit
MODE DIRECT
(Sans Action Detecteur de Cretes)
La température indiquée suit les variations
de la température du produit et est sensible
aux interférences dans le chemin de visée.
Elle est seulement affectée par le Temps
de Réponse du MODLINE 4.
MODE DETECTEUR DE CRETES
TEMPS DE DESCENTE RAPIDE
(Potentiometre sens inverse des
aiguilles d'une montre)
Utilisez ce réglage pour suivre les tendances
de la température et pour réduire l'effet des
interruptions momentanées ou des inter-
ferences dans le chemin de visée.
MODE DETECTEUR DE CRETES
TEMPS DE DESCENTE LENT
(Potentiometre sens des aiguilles
d'un montre)
Utilisez ce réglage pour lire la température de
crete et pour ignorer les espaces entre les
produits ou les interferences dans le champ
de visée. Permet également de détecter les
points chauds sur un produit.
FIG. 3.3 – EFFECT OF PEAK PICKER ON TEMPERATURE INDICATION
3.7
PEAK PICKER OPERATION
If your MODLINE 4 includes the Peak Picker
option (Block D of the Model Number = 1), you
may want to use it in certain measurement
situations:
a. If the workpiece you are measuring is moving
and is in the field of view for only a brief period
of time;
b. If a succession of small parts is to be viewed
with variable spacing between them;
c. If the temperature of a moving workpiece varies
because of slag, oxides, etc., but you wish to
know the highest temperatures;
d. If the line of sight between the instrument and
the workpiece is momentarily or periodically
interrupted, as by a moving piece of machinery
or bursts of steam or smoke.
Fig. 3.3 illustrates the Peak Picker action. The
Peak Picker circuitry responds to the highest
instantaneous value of temperature and holds this
value even if the temperature source is interrupted
by one of the conditions listed above.
Interference
in sight path
Gap in
workpiece
Hot spot on
workpiece
DIRECT MODE
(No Peak Picker action)
Indicated temperature tracks changes in ac-
tual temperature, including interferences in
sight path. Limited only by Response Time of
MODLINE 4.
PEAKING MODE
FAST DECAY TIME
Use this setting to concentrate on temper-
ature trends, and to reduce the effect of
momentary interruptions or interference in
the sight path.
(DECAY control fully counterclockwise)
PEAKING MODE
SLOW DECAY TIME
(DECAY control fully clockwise)
Use this setting to concentrate on peak
temperature and ignore gaps between work-
pieces or interference in the sight path. Also,
to catch “hot spots” on a workpiece.
Summary of Contents for Modline 4
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