LumaSense Technologies ISQ 5-LO - Handbuch (Seite 16)

IMPAC pyrometers ISQ 5 · ISQ 5-LO
16
DIP - 1 DIP - 2 Response time
Off Off 0
ON Off 0.05 s
Off ON 1.00 s
ON ON 9.99 s
Note: If the settings directly at the pyrometer should be used the pyrometer must be
switched into offline mode
Note: At the response time 0 (both DIP-switches at OFF) the device operates using the
time constant < 10 ms.
Note: Response times of 0.01 sec, 0.25 sec und 3 sec may be set via PC/ interface (set
the online  offline (DIP-switch Nr. 4) to the online position before starting!).
7.5
Emissivity slope K =

1 /

2
In ratio mode (2-color mode) the pyrometer is measuring simultaneously with 2 sensors
in adjacent wavelengths. It calculates the temperature by ratioing the radiation intensities
of the two wavelengths. This ratio technique eliminates a number of factors that degrade
the accuracy of a conventional single color instrument e.g. measurement independent of
emissivity in wide areas, unaffected by dust in the field of view, unaffected by dirty view-
ing windows or lenses, etc. In some cases the emissivities of the two wavelengths can differ so that it is nec-
essary to correct the ratio of the two emissivities (

1 /

2) to get a correct temperature reading. This correc-
tion can be done with the emissivity slope setting K. The K-factors of metals are normally higher than 1. For
a correct measuring result it is recommended to make a comparison test, e.g. with a thermocouple probe.
Then the K-factor has to be corrected until the pyrometer shows the same temperature value.
Use the range switch to select
a K value above or below 1.
Setting range: on the pyrome-
ter (offline): 0,900 ... 1,099;
via interface
(online): 0,800 ... 1,250.
8 Software settings
The digital PC interface enables the exchange of data with a PC either by using the InfraWin software (sup-
plied) or an user adapted communication software (see command table in section 13, Data format UPP).
The following additional setting /reading options are available.
8.1
Clear time intervals t
cl
(integrated maximum value storage)
If the maximum value storage is switched on always the highest last temperature value
will be displayed and stored. The storage has to be cleared at regular intervals for ex-
changing by a new and actual value.
This feature is particularly useful when fluctuating object temperatures cause the display
or the analog outputs to change too rapidly, or the pyrometer is not constantly viewing an
object to be measured. In addition, it may also be beneficial to periodically delete and
reset the stored maximum values.
The following settings are possible:
OFF: At clear time “OFF“ the max. value storage is switched off and only momentary values are
measured.
0.01...25 s: If any clear time between 0.01 s and 25 s is set, the maximum value is estimated and held in
double storage mode. After the entered time the storage will be deleted.
Settings:
0.9 (0.8)
. . .
1.099 (1.25)
Settings:
OFF
0.01 s
. . .
25 s
extern
auto
Hold
1,0XX
0,9XX
1,0XX
0,9XX
1,0XX
0,9XX
1,0XX
0,9XX
K=0.900
K=0.985
K=1.050
K=1.025
Setup examples at the pyrometer: