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TI-25DLX Ultrasonic wall thickness gauge with data memory & USB output

Made in the USATotal measuring range (depending on material and probe):

0.63 - 914.4 mm

Measuring range on steel (with standard probe T-102-3300):

0.63 - 150.0 mm

The TI-25DLX  allows to determine the wall thickness as well as the extent of corrosion on all metals, ceramics, glass and most inelastic plastics – and this by measuring from one side only. Depending on the material and the probe used,  it can measuring in a range up to 915 mm.

The TI-25DLX combines the advantages of the TI-25MX with a built-in data memory for 10,000 readings with 250 measurements per stack, with up to 40 separate batches and a USB data interface. The measured values ​​can be transferred in .csv format to any program or viewed in the free Datacomm data software.

The TI-25DLX does not only offer you the possibility to select from 8 preset standard materials and store two custom sound velocities, but also allows an individual customization of the velocity. If the required speed of sound is not yet known, simply use the integrated calibration function. Based on a sample of known material thickness, the wall thickness gauge automatically calculates the correct speed of sound. For improved linearity between maximum and minimum values ​​and highest accuracy, there is also the possibility of a 2-point calibration. The calibrations and pre-setttings can be locked to prevent unintended changes by an inexperienced user.


Default materials include:

  •     Steel 4340
  •     Stainless steel 303
  •     Aluminum 2024
  •     Cast iron
  •     Acrylic glass
  •     PVC
  •     Polystyrene
  •     Polyurethane
  •     Custom 1
  •     Custom 2


The TI-25DLX can perform single or full surface scans. In the surface scan mode, the test head is guided over a large measuring surface, the device then outputs the minimum determined wall thickness of this surface.

The probe the TI-25DLX wall thickness gauge is waterproof and can also be used underwater. Due to the extruded aluminum housing, the device is resistant to impacts and an IP65 seal protects against further environmental influences. Like all TI series wall thickness gauges, the TI-25DLX comes with a 5 year warranty on the meter.

  • Measuring range:
    0.60 - 150 mm (with standard probe on steel) - 0.63 - 914 mm (depending on probe and material)
  • Built-in data memory for 10,000 readings storable in 40 stacks with 250 values per stack
  • USB data interface
  • Resolution: 0.01 mm
  • Choice of 8 pre-set materials and 2 custom sound velocities
  • 2-point calibration on samples of known thickness for highest accuracy and linearity
  • Surface scan with 100 measurements per second
  • Adjustable GAIN for fine adjustment of difficult materials and applications
  • Zeroing of the probe automatical or with zeroing plate
  • Status bar provides information about the stability of the measurement
  • Including NIST traceable calibration certificate

Typical Applications
Typical Applications

Additional functions

Probe diameter:
Specify the probe diameter for increased linearity.

High-speed surface scan:
Returns the lowest value detected during a 100 Hz scan.

Differential mode:
Returns the ± difference from an entered nominal value.

Alarm Mode:
Adjustable maximum and minimum limits. Exceeding the limit warns a visual and audible alarm.

2-point calibration:
Automatically determines the correct speed of sound from a calibration on 2 samples of known thickness.

Measuring Limits
Minimum Radius for Convex Surfaces Minimum Radius for Convex Surfaces 8.89 mm
Minimum Radius for Concave Surfaces 76.2 mm
Minimum Radius for Concave Surfaces Minimum Headroom 25.0 mm
Minimum Sample Diameter Minimum Sample Diameter 3.8 mm

Complete Kit

The TI-25DLX comes as a complete set, which consists of:

  • TI-25DLX wall thickness gauge
  • Ultrasonic Probe T-102-3300 1/4 ", 5 MHz Dual Element
  • USB data cable
  • Datacomm software available for free download
  • 120ml coupling fluid
  • NIST traceable calibration certificate
  • 2 AA batteries
  • Operation manual
  • Carrying Case


A-302-6002 Protection for TI series gauges

    More details

    A-302-6002 Protection for TI series gauges 127313

    Category Wall Thickness Probes

    More details

    Category  Wall Thickness Probes 0

    CF-AN Coupling Fluid

    • Used to create an ultrasonic coupling between the probe and material to be measured
    • Available in different volumes - 125ml / 250ml / 500ml / 1ltr / 5ltr / 25ltr

    More details

    CF-AN Coupling Fluid 126455

    Li-Ion Rechargeable AA Batteries via the USB to USB-C

    • Li-Ion rechargeable battery
    • Stable voltage of 1,5 V over 95% of the runtime
    • Charged via the USB to USB-C cable

    More details

    Li-Ion Rechargeable AA Batteries via the USB to USB-C 127554

    Measuring range with standard probe:0.63 - 150 mm (with standard probe T-102-3300 on steel)
    Measuring range:0.63 - 914 mm (depending on type of probe and material)
    Resolution:0,01 mm
    Measuring mode:Pulse-Echo (P-E)
    Sound velocity:Adjustable from 305 - 18,542 m / s
    Display:-Large LCD display with 4.5 digits per 1.3 cm high
    -justable backlight
    -By subdividing into individual segments clear playback of advanced information
    Display refresh rate:10 Hz
    Puls rate:200 Hz (200 pulse/sec)
    Gain:40-52 dB range in 3dB steps
    Probe (standard):T-102-3300 1/4 ", 5 MHz Dual-Element Probe
    Contact Surface 5/8" (17mm) Made of PEEK (Polyethylethylcytone)
    Probe (optional)1 - 10 MHz, 3/16" until1 inch
    Probe cable:1.2m long waterproof cable with unpolarized connections
    Measurement units:Selectable mm and inches
    Power supply:2x AA batteries (rechargeable batteries can be used)
    Battery duration:45 hours with continuous use
    Temperature limits:Environment: -30 - 75°C
    Material: -20 - 100°C
    Probes for higher temperatures available
    IP protection category:IP65
    Housing:Extruded aluminum body with nickel coated end caps (sealed)
    Dimensions:63,5 x 31,5 x 131,3mm (LxWxH)
    Weight:308 Gram
    Certifications:NIST traceable and MIL-STD-45662A
    CE Certified
    Warranty:Device: 5 years
    Test head: 90 days
    Data output:USB-C (Plug'n'play, data can be viewed and moved directly to PC)
    Internal data memory:10,000 measured values, storable in 40 stacks of 250 values each
    Memory type:Sequential arrangement (single column)

    Buy Now

    TI-25DLX Wall Thickness Gauge With Data Logging
    € 1.775,00 
    TI-25DLX-WOP Wall Thickness Gauge With Data Logging Without Probe
    € 1.506,00 

    A-302-6002 - Protective Rubber Boot For TI-Series Small
    € 106,00 
    Li-Ion Rechargeable AA Batteries - 4 pcs (with USB to USB-C cable)
    € 25,00 
    All mentioned prices are excluding VAT & excluding shipment costs.
    Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request

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