Wireless Concrete Crack Data Loggers precisely measure and record linear displacements of cracks and joints in concrete, masonry, and other solid structures.
The logger is mounted on one side of a crack or joint, and a 3.15in (80mm) long stainless steel cable is secured to an eye bolt on the opposite side. Optional Extension Cables span larger gaps, with cable lengths of 12, 20, 39, and 79in (300, 500, 1,000, and 2,000mm). As the cable coils or uncoils from its mounting on a rotary potentiometer, movements and ambient temperatures are time-stamped and logged.
Concrete Crack Data Loggers have the data storage capacity to record up to 51,062 displacement and ambient temperature measurements in user-defined time intervals from one minute to 91 hours. Resolution of linear movement readings is 0.00012in (0.003mm). The ambient temperature range is -4°–176°F (-20°–80°C) with 1°C resolution.
HM-654 Wireless Concrete Crack Data Logging System includes a 3.15in (80mm) long stainless steel cable, eye bolt, and 1/2AA, 3.6V battery which provides up to four years of battery life. Also included is a HMA 660 Wireless Communication Module which connects to the USB port of a Windows PC or tablet to allow Wi-Fi data transfer from data loggers at distances of 492ft (150m).
HM-652 Wireless Concrete Crack Data Logger includes a 3.15in (80mm) long stainless steel cable, eye bolt, and 1/2AA, 3.6V battery which provides up to four years of battery life. Wireless Communication Module is not included and can be purchased. separately.
Features:
- Records movement of cracks, joints, and linear displacement in concrete, masonry, and other solid material structures
- Records up to 51,062 displacement and ambient temperature measurements in user-defined time intervals
- Included battery provides up to four years of service
Included Items:
- Wireless Concrete Crack Data Logger
- Wireless Communication Module (included with HM-654 Kit only)
- 3.15in Stainless steel cable
- Eye-bolt
- 1/2-AA, 3.6V Battery
Accessories:
- Extension Cables are used to extend the monitoring cable and monitor larger gaps. Available in 12in, 20in, 39in, 79in length.
- Wireless Communication Module can be purchased for additional use or replacement to allow Wi-Fi data transfer to a PC or tablet and monitor up to 32 Concrete Crack Data Loggers.
