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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
E.2 Wheel Scanners
STC recommends that you use the calibrated heat source (2100-810NG) only when the
outside (ambient) temperature is above 0°F (-18°C) and below 90°F (32°C).
If you must
use it at other times, do so only when the needle is centered on the front of the temperature
meter. If the needle isn't stabilized within
2 degrees of set point, the heat source isn't
operating properly.
To calibrate a
Type II/Type III
wheel scanner:
1
Be sure that you have on hand an STC calibrated heat source (2100-810NG) and a
laptop computer.
2
On the control panel of the calibrated heat source, toggle the
Gating
switch off.
3
Plug the proper end of the supplied 50-foot (15-meter) power cord into the
six
-contact
circular connector on the front of the calibrated heat source.
Sixty Hz is critical for proper operation.
For a site that doesn’t have a 120-volt 60
Hz power source, the heat source should be powered from a true sine wave inverter
capable of 250 watts with an output of at least 110 volts at 60 Hz. The inverter should
operate from an input voltage of 10.5 VDC to 15 VDC. A 120-volt USA socket should
be provided to match the heat source power cord. The inverter should be grounded
according to the manufacturer’s recommendations.
WARNING
Once plugged in, both function connectors will have live AC present.
4
Using the supplied dust cap, cover the function connector that isn't being used.
5
Plug the other end of the power cord into the 120-volt USA socket.
6
On the control panel of the calibrated heat source, turn the temperature knob to
180
.
7
Put the heat source in a shady area, out of direct sunlight and out of the wind.
8
Wait about 8 minutes for the heat source to reach operating temperature and stabilize.
The heat source has reached operating temperature and stabilized when the
temperature meter needle remains centered.
Once the temperature stabilizes, calibration may begin. Once stabilized, the
temperature will change less than plus-or-minus one degree Fahrenheit.
Содержание SmartScanIS
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