Elcometer Depth Gauge 331

The Elcometer 331 probe heads and probes extend the functionality of the Elcometer 331 series and allow for precise adaptation to different measurement requirements. All components are fully interchangeable and can be changed quickly without the need to return the unit.

System & Application

Depending on the testing task, different probe heads are used – from standard measurements through closely spaced reinforcement to structures deep within the concrete. Borehole probes also enable the detection of prestressing tendons and multi-layer reinforcement at great depths. :contentReference[oaicite:0]{index=0}

Variants & Applications

TW33119124-1A – Standard probe head:
Suitable for most applications, reliable location and cover measurement

TW33119124-2A – High-resolution search head:
Ideal for closely spaced reinforcing bars, precise at small spacings

TW33119171A – Deep-penetration probe:
For measuring reinforcement at great depths within the concrete structure

TW33120014D – Dual probe (high-tensile / stainless steel):
Specially designed for high-tensile steel and stainless steel (e.g. 304, 316, Duplex)

TW33119223-1A – Borehole probe (short):
Measuring range up to approx. 40 cm – ideal for precise depth localisation

TW33119223-2A – Borehole probe (long):
Measuring range up to approx. 100 cm – for deep reinforcement layers and tensioning ducts

Technical specifications

Compatibility: Elcometer 331 (BH, SH, TH, THD models)
Measuring ranges depending on probe: approx. 5 mm to 180 mm (search heads)
Borehole probes: up to 1,000 mm measuring depth
Quick changeover without returning the unit
Robust construction for site conditions