STC Smartscan NG2, Manual

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May 2021, SmartScanNG² User's Guide for Wayside Enclosure Components, EUD-2018086-00 Rev.3
9.8.5 Shielded Temperature Probe
The temperature probe is encased in a radiation shield that shields it from direct sunlight and
allows ambient air to flow through and around it. The probe mounts to the outside wall of the
wayside enclosure and provides accurate temperature indications over a range of -45°C to
+65°C (-49°F to +149°F). Most system reports include ambient temperature (when the train
passed the site).
There is one shielded temperature probe per system. To install this probe:
1 Be sure that you have on hand the customer-supplied fasteners needed to attach the
shielded temperature probe to the outside of the wayside enclosure; a wire stripper;
and the fasteners needed to attach the RF-filter assembly to the inside of the wayside
enclosure.
2 If you haven't done so already, remove the shielded temperature probe and the
RF-filter assembly from its box.
3 Mount the probe onto the outside of the wayside enclosure on the side furthest from
the track. This should be the side of the enclosure where the SmartScanNG² detector
is mounted. No matter where it is mounted, make sure the entire shielded temperature
probe is in the top third of the enclosure
or above the roof of the enclosure.
4 Route the cable from the probe to the bottom of its respective SmartScanNG² detector.
In sheet metal, use a rubber grommet in every hole through which you route the cable.
5 As shown below, insert the four Molex pins (on the end of the cable of the probe) into
the supplied Molex housing.
The red wire supplies 12 VDC to the shielded temperature probe.
6 Mate the Molex housing (on the end of the cable of the probe) to the factory-wired
Molex socket on the end of the RF-filter assembly.