Tilt Acquisition Module

On most monitoring sites, the distance between a tiltmeter string and the main datalogger can easily exceed 100 meters. Running individual analog pairs for each sensor invites signal degradation and complicates fault finding. The Tilt Acquisition Module solves this by digitizing sensor signals right at the borehole or structure, then sending the results over a robust industrial bus. Each module accepts up to eight independent tilt channels. Inputs are differential, with programmable gain to match both low-sensitivity servo accelerometers and high-output MEMS sensors. A 24-bit delta-sigma ADC ensures that sub-0.001-degree changes are captured, yet the firmware aggressively filters out vibration noise — so you don’t get false alarms every time heavy machinery passes by. Output is Modbus RTU over RS-485, which integrates directly with Kingmach’s own R-series loggers or any third-party SCADA that talks Modbus. A CAN bus option is available for longer cable runs in tunnels. Power consumption is low enough that a 12 V battery and a small solar panel keep the module running indefinitely. The extruded aluminum housing carries an IP67 rating and includes integrated M12 connectors for power, sensor input, and data output — no need to open enclosures in the rain. An internal temperature sensor allows the module to apply lookup-table corrections for tilt sensors that drift with temperature, a common issue with lower-cost MEMS units. Kingmach ships these modules pre-configured for common sensor types, including brands like Jewell, Geokon, and RST. Custom wiring tables are no extra charge. Firmware tweaks — such as changing the data rate from one sample per minute to one per second — can be done by the user via a simple configuration file, or Kingmach technicians can do it remotely if the module is linked to a cellular gateway. This flexibility matters when a construction schedule changes overnight and you suddenly need faster tilt updates.