half bridge strain gauge

The half bridge gives you built-in temperature compensation. One grid picks up strain and temperature; the other only temperature. In a Wheatstone bridge circuit, the thermal outputs subtract from each other, so you get a signal that’s much less affected by ambient changes. It’s a step up from quarter bridge setups where you often need a separate dummy gauge.

Yes, many engineers do. You’ll want a gauge with a backing and grid geometry that suits concrete’s grain structure. Longer gauge lengths, like 30 mm or more, help average out the strain over aggregate. We can provide options with appropriate backing for rough surfaces and advice on surface preparation and adhesive selection.

It depends on your power source and cable length. 350 Ω gauges draw less current for the same excitation voltage, so they generate less self-heating. If you’re running long lead wires, higher resistance also makes the circuit less sensitive to lead wire resistance changes. In many industrial applications, 350 Ω is standard, but 120 Ω is common in lab or short-run tests. Our team can help you weigh the trade-offs.

We supply installation guides and can walk your technicians through the process remotely. For larger projects, on-site training can be arranged. Surface preparation, adhesive curing, and waterproofing are critical steps. We have regional distributors who can also assist with hands-on support.