Single-Point Adjustment Function - KPM PROCESS SENSORS METIS M311 Operating Manual

▪ Data mode:
- ASCII mode: The pyrometer always transfers separate readings to the software and shows each in the
graph as a pixel. In addition to the transmission of measured values, also regularly status values are
transmitted (limit contacts or active laser targeting light...), so that measured values do not always arrive
at the same time interval.
For most applications this speed is sufficient, a modern PC can transmit every 5 ms a value at 921 Kbits.
- Buffer mode: Measurement data are temporarily stored in the internal pyrometer-buffer and periodically
transferred to the software in blocks. The buffer interval defines how fast the internal FIFO buffer of the
pyrometer is filled. The shorter the time, the more data per communication block will be transferred.
An interval time set too fast in relation to the baud rate and computing power leads to buffer overflows,
which are represented by vertical bars in the graph. A modern PC reaches intervals of about 0.3 ms at
921.6 Kbits without buffer overflow, at 57 Kbits intervals of approximately 3.6 ms. If buffer overflows oc-
cur, the interval time can be increased, the baud rate can be increased, or unnecessary programs and
background services be stopped. A minor impact also has the reduction of the
memory in the

7.1.5.13 Single-Point Adjustment Function

measuring temperature.
The function can be used, e.g. to compensate optical losses in measurements through windows or lenses with
unknown transmittance (for example, when coupling the pyrometer into a laser beam delivery system).
For this purpose, the pyrometer has to be aligned to a calibration source with this required temperature or a
portable calibration source is positioned at the measuring point and the adjustment function is carried out.
NOTICE
This function adjusts the pyrometer to one specific temperature and ensures accurate measure-
ments in the range around this temperature.
INFO
to identify a pyrometer that has performed a single-point ad-
justment: The pyrometer itself does not show whether the factory adjust-
ment is running or whether a single-point adjustment has been carried out.
However, a hazard symbol with the text "A single-point adjustment has
been made in this device" can be seen in the
point adjustment has been carried out. This can also be seen in the man-
ual adjustment window, where the adjustment values of M3 devices differ
from 0.0% (see 7.1.5.13.2). H3 devices have a fixed value of mostly 5.9%
for K1 and K2.
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Data Recording Settings).
The single-point adjustment function is used to readjust the pyrometer to a mainly used
METIS M311 / M322 / H311 / H322 (12-pin device connector)
Devices Tab when a single-
Maximum data sets in