The UK1401 SURFER is a compact and ergonomic ultrasonic tester designed for fast and accurate assessment of concrete quality and integrity. It is ideal for both field and laboratory use.

Main features and benefits

• Robust construction in impact-resistant plastic, weighs only about 350 g – easy to operate with one hand.

• Short measuring base of 150 mm between built-in dry contact transducers – no need for gel or surface preparation.

• Sound indication confirming received ultrasound signal for easier use.

• Large internal memory that stores up to 50,000 measurements divided into groups.

• USB port for fast data transfer to PC in CSV format.

Technical specifications

• Measuring base: 150 mm

• Time measurement range: 15–100 µs

• Velocity measurement range: 1,500–9,990 m/s

• Air gap depth range: 10–50 mm

• Working frequency: 50 kHz

• Pulse repetition: 5–25 kHz

• Memory capacity: Up to 4,000 object registrations

• Operating temperature: –20 °C to +45 °C

• Battery operating time: Minimum 15 hours

• Dimensions: 199 × 120 × 34 mm

• Weight: approx. 350 g

Applications and analysis modes

1. Time and speed measurement – assessment of the homogeneity and strength of the concrete.

2. Surface defect identification – detects areas of lower sound velocity that may indicate cracks or voids.

3. Crack depth measurement – estimates the depth of surface fractures.

4. Strength estimates – the instrument can be calibrated against concrete classes for precise measurements.