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Home / Flaw detectors, MPI testing equipment / Acoustic flaw detector TQ-92
Acoustic flaw detector TQ-92
Price: on request


  • Description
  • Exploitation
  • Technical specifications
  • Delivery set

The handheld instrument for detecting delaminations and other material defects by manually scanning the inspection area.

Non-destructive testing bonded or laminated components by Mechanical Impedance Analysis (MIA)

  • High detection capability and spatial resolution in the inspection range from 0.15 mm to 13 mm
  • Extra-light and compact electronic unit for comfortable working in field conditions
  • The coupling of the sensor is done dry without coupling liquid
  • The constant pressure of the spring-loaded sensor guarantees stable and reliable indications
  • Easy instrument operation and legible interpretation of the inspection results

The instrument is applicable for testing:

  • Multilayered laminates
  • Fiber-laminate materials
  • Laminate-honeycomb bonding
  • Laminate-metal bolding
  • Metal-metal bonding
  • Metal soldering
  • Metal-feltmetal brazing
  • Foams (hard and soft)
  • Wood laminates

Possible sources of material defects:

  • Impact damages by foreign objects
  • Hail and lightning strikes
  • Loss of strength caused by heat
  • Thickness variations
  • Osmosis damages of fiberglass boats

Special features

  • Rapid start: new operators do not need extensive training
  • Easy calibration: in-field automatic sensor calibration on the inspection object
  • Stable and reliable operation on rough/uneven surfaces due to spring-loaded sensor design
  • Customized sensor design for specific material combinations



Measurement principle

Mechanical Impedance Analysis (MIA)

Inspection range by two MIA transducers

0.15 mm to 13 mm / 0.006 to 0.5 inches (depending on material properties)

Flaw detection capability

For laminated components: > dia 8 mm/0.3 inch
For metal alloy bondings: > dia 0.5 mm/0.02 inch
with the sizing accuracy < 25%

Transmitter type

Pulse excitation

Electronic unit dimensions

159 x 77 x 35 mm                                                         

6.3 x 3 x 1.4 inches


0.3 kg / 0.66 lbs


2.4-inch color display 240x320 TFT

Battery type

3 x NiMH accu / battery with ³ 2.700 mAh

Battery operation time

up to 20 hours

PC interface

USB (for loading user pre-sets)

Environmental conditions

Air temperature range: 10 to 50 °C / 50 to 122 °F
Humidity: up to 98% (at 20 °C)

Delivery set

  1. Electronic unit
  2. Single-element MIA transducer
  3. Dual-element MIA transducer
  4. Reference block Co-91
  5. Exchangeable NiMH battery (3 pcs)
  6. USB data cable
  7. Flash drive with recovery
  8. Power supply
  9. Warranty certificate
  10. Hard case