Inspex Ultrasonic Thickness Gauge IPX-251S

The Inspex IPX-251S is a compact ultrasonic thickness gauge that delivers precise measurement of material thickness for both ferrous and non-ferrous substrates. With its wide measurement range, selectable resolution, probe auto-identification, and rugged portable design, it’s ideal for corrosion/erosion monitoring in pipelines, tanks, or industrial structures.

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Category: Coating Thickness Gauge

Brand: Inspex Estimated delivery:May 27, 2026 - May 29, 2026

Description

Designed for field and workshop use, the IPX-251S offers usable accuracy across large thicknesses with minimal setup. Its automatic zero calibration, multiple sound velocity presets, and large backlit LCD make inspections efficient even under harsh or low-light conditions. Battery power ensures portability and continuous operation.

Inspex Ultrasonic Thickness Gauge IPX-251S

The Inspex IPX-251S combines versatility and performance in a handheld form. Capable of measuring from sub-millimeter to large thicknesses, the unit features interchangeable probes, durable casing, low power draw, and intuitive operation. It balances technical capability with ease of use for maintenance, quality control, and NDT applications.

Features

Wide measuring range (0.65 – 400 mm)

Enables measurement from very thin to thick materials, depending on the probe-material combination, supporting a broad set of applications.

Selectable resolution (0.01 mm / 0.1 mm)

Allows fine resolution for thin materials and coarser for thicker ones, aiding readability and precision in different ranges.

Automatic zero calibration and probe identification

Simplifies setup by eliminating manual zeroing steps and detecting probe type automatically for correct operation.

Large backlit LCD display

Improves readability in dim lighting or when access is difficult, helping inspectors make quick, reliable measurements.

Multimaterial compatibility

Works on a variety of materials — steel, stainless steel, aluminium, glass, plastic etc. — making it useful in mixed material inspection scenarios.

Overview

Parameter	Specification
Model	Inspex IPX-251S Ultrasonic Thickness Gauge
Display	Backlit 128 × 64 LCD screen
Measuring Range	0.65 – 400 mm (varies with probe / material)
Resolution	Selectable: 0.01 mm or 0.1 mm
Accuracy	±0.04 mm for thickness < 9.99 mm; for larger thicknesses, formulas apply (approx +0.1 % or +0.3 %)
Sound Velocity Settings	Multiple presets (e.g. 1000-9999 m/s), manually inputtable
Sample / Material Types	Steel, stainless steel, aluminium, glass, polystyrene, polyethylene etc.
Minimum Sample Temperature	15 °C (standard probe)
Power Supply	2 × 1.5 V AAA dry cell batteries (not supplied)
Operating / Material Temperature	Approx. -15 °C to +55 °C with standard probe
Dimensions	115 mm × 64 mm × 27 mm
Weight	220 g
Standard Delivery	Main unit, standard 5 MHz transducer, built-in 4 mm calibration block, manual, carrying case, certificate of calibration
Optional Probes	Various probes (5 MHz, 7.5 MHz, 10 MHz etc.) with different measurement spans / diameter / temp ranges