ACS UK1401 Surfer Ultrasonic Pulse Velocity Tester

ACS UK1401 Surfer Ultrasonic Pulse Velocity Tester

A Compact, Ergonomic and Handheld Surface Pulse Velocity Tester for Compressive Strength Evaluation of Concrete

Efficient One-Piece Design

The UK1401 Surfer is a compact ultrasonic pulse velocity tester for quality assessment of concrete with an ergonomic one-piece design for easy single-hand operation. The device is made of lightweight shockproof plastic and has two built-in transducers with dry-point-contact with fixed base (150 mm). Wear resistant ceramic tips on the transducers are insensitive to rough surface conditions, removing the need for applying coupling gel to prepare the object surface for testing. The device possesses non-volatile memory that can store 50 measurements (with optional grouping of results) and a USB port for transferring measured data to an external PC.


  • New generation of wear-proof DPC transducers
  • Well-rated DPC transducer pressing due to spring loaded mounting
  • Single-hand operation
  • Constant measuring base 5.9"
  • Anti-glare 2.8" TFT color display for outdoor conditions
  • User friendly intuitive menu
  • USB interface for inspection data transfer

Comprehensive Strength Evaluation Mode


The UK1401 Surfer evaluates the durability of concrete. The evaluation is based on correlation between time of propagation/velocity of longitudinal ultrasonic waves in concrete. Measurements are performed by the surface scanning with a fixed base. Applications include:

  • Search for near-surface flaws in the concrete structures by abnormal decreasing of ultrasound velocity or increasing of the propagation time in the flaw area.
  • Evaluation of anisotropy in composite materials.
  • Evaluation of concrete curing during construction using poured-in-place concrete method and sliding shuttering.
  • Evaluation of the load-carrying ability of concrete backbones and posts.
  • Evaluation of the depth of the outcrop cracks.
  • Evaluation of porosity and fissuring of the material.
  • Evaluation of the age of material if its physical properties change with time.

Technical Specifications

UK1401 Surfer Specifications

Scanning Base 5.9" (150 mm)
Time Measurement Range 15-100 μs
Velocity Measurement Range 40 to 470 inches/s (1500-9990 m/c)
Crack Deepness Measurement Range .39-1.96" (10-50 mm)
Working Frequency 50 kHz
Pulse Repetition Frequency 5-25 kHz
Ultrasonic Wave Mode Longitudinal
Operation Temperature Range -4 to 122 °F (-20 to 45 °C)
Battery Operation Time 15 hours
Dimensions 7.83" x 4.72" x 1.33" (199 x 120 x 34 mm)
Weight .77 pounds (350 g)

Kit Includes

  • UK1401 Surfer Ultrasonic Tester
  • USB A – Micro B Cable
  • USB Adapter for 220V
  • Calibration Sample
  • Finger Lanyard
  • Hard Carry Case
Description Part # Saved Price Select Option Add to
ACS UK1401 Surfer Ultrasonic Pulse Velocity Couplant Free Concrete Tester, Includes USB Cable and Adapter, Calibration Sample, Lanyard and Hard Carry Case CT-ACS-UK1401 $3,165.00