Dynamic Strain Data logger（VW）

The Kingmach dynamic strain data logger (VW) is built around a high-speed vibrating wire interface that captures strain readings at intervals down to a few seconds, well above what static loggers typically deliver. That speed is paired with a resolution of 0.1 microstrain, which helps when tracking subtle shifts in bridges, tunnels, or deep excavations. Temperature compensation is handled through built-in thermistors, with data automatically corrected before storage. On the connectivity side, the logger supports SDI-12, RS-485, and 4-20 mA inputs, making it straightforward to connect other sensors like piezometers, crack meters, or inclinometers. Power can come from a 12 V battery, solar panel, or mains adapter, and consumption is low enough that a standard 40 Ah battery often runs the unit for over a month. Data is saved on a removable SD card and can be pulled remotely via the 4G modem option. Customisation is available for sensor warm-up time, triggering thresholds, and alarm outputs, so the logger can be adapted to project-specific requirements. While the core specs align with many mid-range systems, the ability to mix VW sensors with analog and digital instruments on one device reduces the need for multiple loggers on a single site. For engineers managing distributed monitoring networks, this cuts down on cabling and simplifies data collection.