Cold Joint Remote Monitoring Type
Ground-Penetrating Radar (GPR) is a non-destructive testing method that uses electromagnetic waves to detect changes in the structure of materials. The American Concrete Institute (ACI) 306: Guide to Cold Weather Concreting defines "cold weather" as three or more days of low temperatures in a row, specifically ambient temperatures below 40°F (4°C) and air temperatures below 50°F (10°C) for more than a 12-hour period. Thermocouple Sensors are common temperature sensors used in a many commercial and industrial applications and well suited for monitoring environmental applications. The measured output voltage of the thermocouples is converted back to a temperature by the RAZN. TempTale® RF (TTRF) temperature monitors are part of Sensitech's family of precision devices designed to track and collect time and temperature data about temperature-sensitive shipments. And methods such as automated total stations (AMTS), that are often relied on to detect changes in track alignment, depend on optical sensors that cannot work without clear line of sight to reflective prism targets fixed at points of interest such as railway tracks.
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