System Operation
FOT Lab Kit User’s Manual 3-5
Temperature
Measurement
Range
The range of temperatures that may be measured by the FOT Lab Kit
is limited by the type of probe used. Under no circumstances
should the maximum temperature rating of a probe be exceeded.
Check documentation of your probe or with a LUXTRON
Applications Engineer to determine the specified temperature limits
of your Fluoroptic
®
probe.
WA RN I N G Exceeding the maximum temperature rating of the probe may
destroy the probe!
Probes LUXTRON’s Fluoroptic
®
technology uses fiber optic probes
incorporating patented phosphor compounds encapsulated at the
sensing end of the probe. These probes are immune to EMI and
radio-frequency noise, are much more robust that thermocouples
and are ideally suited for hostile environments.
Temperature data are collected by exciting the probe's phosphor
with a burst of light sent through the fiber optic cable. The decaying
light signal returns through the fiber to the instrument where it is
processed by converting the analog signal into a digital value which
is then converted into a calibrated and corrected temperature. The
measured temperature is reported through the RS-232 interface and
the analog outputs.
Operational Note Whenever a probe is disconnected from the device or from a fiber
optic extension cable always install the provided vinyl cap over the
FOT Lab Kit instrument’s optical port. This prevents random
ambient light from entering the system which would adversely affect
the accuracy of the temperature measurements from the remaining
probes.
If you experience unexpected resets of the device during initial
installation and setup, it is likely that the power supply is
improperly grounded. A code is provided in the startup message
indicating the cause of the most recent reset. This code is found at
the end of the first line of the startup message and may be requested
by your Customer Service representative while assisting you with
your installation. The code may be any one of the following:
(POR) Power On Reset (WDR) Watchdog Timer (BOR) Brown Out Reset
(CXR) Ctrl+X Reset (WKR) Wakeup Reset (CLR) MCLR Reset
Example: “Luxtron Corp. Copyright 2002” (POR)
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