Reinforcement Stress Sensor

A reinforcement stress sensor is often the only direct way to validate design assumptions once concrete has set. The sensor measures strain in the rebar and, through a known modulus, converts that into stress—no modelling guesswork needed. Kingmach’s sensors use full‑bridge foil strain gauges sealed inside a protective housing that is welded or clamped onto the reinforcement bar. The design avoids resin‑filled cavities that can swell in wet conditions, which is one less thing to troubleshoot during commissioning. We supply sensors for rebar diameters from 12 mm up to 40 mm and in lengths that fit typical cage geometries without forcing the contractor to cut and re‑bend steel just to make room. Output options cover mV/V, 4‑20 mA, and RS‑485, so integration with popular dataloggers doesn’t require a separate signal conditioner unless the project specifically asks for one. Customisation is available when standard dimensions won’t work—for instance, a shorter gauge length for dense reinforcement in nuclear containment walls or a higher IP rating for marine piers subject to tidal immersion. Because we manufacture in‑house and stock common variants, lead times tend to be quicker than what is typical for bespoke geotechnical instruments. Every sensor ships with a calibration sheet traceable to national standards and a wiring diagram that field technicians actually find useful. Our technical team supports installation planning, troubleshooting, and even data interpretation after the pour, which helps consultants turn raw millivolt readings into stress maps without an extra software purchase. The sensors stay stable over multi‑year monitoring programmes; the low‑creep potting compound and fatigue‑rated strain gauges see to that. For projects where budget matters but cutting instrument quality isn’t an option, a Kingmach reinforcement stress sensor sits in the sensible middle ground—tested thoroughly, priced realistically, and backed by people who answer emails on the same continent.