Strain Acquisition Readout

They’re built for the common types found on civil engineering sites—vibrating wire, foil strain gauges, and spot-weldable gauges. You can specify quarter, half, or full bridge completion, and the unit handles 120Ω, 350Ω, or 1000Ω gauges without fuss. If you’re mixing sensor types on one project, we can set up different channels with their own excitation and gain settings.

That’s mostly about two things: a high enough input impedance and proper Kelvin sensing for lead wire resistance. Our readouts use a 24-bit ADC with differential inputs and optional 6-wire bridge connections, which largely cancels out cable resistance errors. In practice, we’ve seen stable readings over 300-meter shielded runs in dam monitoring projects, though we still recommend doing a site calibration if you can.

Yes. The base unit has RS-485 and SDI-12 ports, and we can add a 4G/LTE, LoRa, or Ethernet module depending on your site’s infrastructure. The modem can push data on a schedule or wake up on an alarm trigger—handy for slope monitoring where you don’t want to send hourly reports but need an immediate alert if strain jumps past a preset threshold.

Minor changes like adjusting sampling rate, adding a protective enclosure, or pre-wiring connectors usually add about 7–10 working days. Major re-engineering—say, integrating a specific radio or meeting a niche explosion-proof standard—takes longer and we’ll quote it case by case. We’re a specialist manufacturer, not a huge catalogue house, so the lead time is often shorter than you’d guess because we’re not waiting on a flag to flip in a foreign ERP system.

If you’re doing spot checks during construction or before installing a permanent system, a handheld unit is lighter and runs on batteries. For long-term monitoring—like tunnel convergence or bridge bearing displacement—you want a logger that can sit in a NEMA enclosure for years, powered by solar or mains. That one has memory, remote access, and an RTU function. Some projects start with the handheld for initial baselines and then install the permanent version later; we design the connectors and protocol to be the same so you’re not re-terminating cables.