KPM PROCESS SENSORS PSC-S55N Operation Manual page 29

PSC-55 Pyrometer Series Operation Manual
Response time t
95
Sub temperature range
Maximum and minimum value storage
The pyrometers response time characterizes the time span in which the measured
temperature during erratic variation has to coincide with the measuring field so the
pyrometer is able to reach 95 % of the initial value of the measured temperature. The
minimal response time for the devices PSCspot PSC-S55N, PSC-G55N and PSC-GE
55N have a speed of response of 2 ms, for the 2-color model PSC-SR55N series, the
response is 5 ms. Different response time settings can be adjusted up to 100 seconds.
You can set a sub temperature range for the pyrometer. The sub temperature range
can only limit the temperature range and must has a minimum span of 50 °C between
lower and upper limit. This range limits only the scaling of the current output. The
lower value refers to 4 mA and the upper value to 20 mA.
As described in chapter "Maximum and minimum value storage" below, the changing
of the sub range cab be used as well for parameterization of the maximum value
storage in mode auto.
If the data storage is switched off and the current value is measured. The
parameterization is made via software.
The extreme value storage can be used as maximum value storage or as minimum
value storage.
Minimum value storage
The lowest measured value is stored, so the digital display and the current output get
frozen at the last measured minimum value. The minimum value storage is not
available in operating mode "auto". To detect the minimum the delete time must be at
least a triple of the response time.
Maximum value storage
The highest measured value is stored, so the digital display and the current output get
frozen at the last measured maximum value. To detect the maximum the delete time
must be at least a triple of the response time.
If "Valley Mem" or "Peak Mem" are selected as an operation mode, you can adjust
one more parameter:
Time-controlled 10 ms ... 100 s
The extreme value is detected in a double storage that gets cleared alternately after the
adjusted time. The stored, not-cleared data storage keeps its value for one more cycle
time. Measurement value drops at clear time are avoided in this way.
External deletion
The deletion of the data storage is done with an external contact or via software. Pin
J serves as input for the external deletion. To delete the maximum value storage, pin
J must be connected shortly to the power supply (pin K, +24 V DC). Please refer
chapter Connecting the pyrometer.
To delete the maximum value storage via software PSCspot or PSCspot Pro
(optional), use the DELETE button in the register PARAMETER.
Automatic deletion (mode for discontinuous measurement problems)
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