The TI-25 series ultrasonic thickness gauges offer a comprehensive range of solutions for non-destructive wall thickness measurement on metals, plastics, and other solid materials—ideal when access is limited to one side only.
Whether you need a simple gauge for spot-checks or a fully-featured instrument for advanced applications, the TI-25 series covers a wide range of needs. Refer to the comparison table below to identify which model best suits your requirements.
Key Features (varies by model):
Key Benefits:
Various transducer sizes are available to accommodate flat surfaces, curved areas or restricted access points. A range of frequencies is offered to suit either increased measurement depth or enhanced resolution. Depending on the model, features include measurement through coatings, data logging capabilities, differential mode and high-speed scan modes—making the TI-25 Series suitable for everything from basic inspections to advanced industrial surveys.
Contact us to help identify the most suitable TI-25 model for your specific use case.
The TI-25 Series wall thickness gauges are supplied as a complete kit, including the following items:
Standard version:
WOP version:
Includes all items from the standard version except the transducer.
This option is intended for users who wish to use a different transducer than the standard one supplied with the kit.
TI-25MX | TI-25MXT | TI-25DLX | TI-25DLXT | TI-25SX** | TI-25PX** | TI-25LTX** | |
---|---|---|---|---|---|---|---|
Display | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
Keypad | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
Measurement Range with standard transducer on steel (*) | 0.63 -150 mm | Pulse - Echo 0.63 to 199.9mm, Echo - Echo 2.54 to 25.40 mm | 0.63 -150 mm | Pulse - Echo 0.63 to 199.9mm, Echo - Echo 2.54 to 25.40 mm | 0.63 -150 mm | 1 - 150 mm | 1 - 150 mm |
Resolution | 0.01mm | 0.01mm | 0.01mm | 0.01mm | 0.01mm | 0.01mm | 0.05mm |
Measurement modus | Pulse-Echo | Pulse-Echo / Echo-Echo | Pulse-Echo | Pulse-Echo / Echo-Echo | Pulse-Echo | Pulse-Echo | Pulse-Echo |
Material velocity range | 305 - 18,542 m/s | 305 - 18,542 m/s | 305 - 18,542 m/s | 305 - 18,542 m/s | 305 - 18,542 m/s | 305 - 18,542 m/s | 5,920 m/s (steel) |
Pre-calbrated material setups | 8 | 8 | 8 | 8 | 8 | 0 | 1 |
User defined material setups | 2 | 2 | 2 | 2 | 2 | 1 | 0 |
Adjustable gain | |||||||
High Speed Scan Mode | |||||||
Differential Mode | |||||||
Limit alarm mode | |||||||
Velocity Gauge (VX) | |||||||
Memory and Data Logging | |||||||
Standard transducer | T-102-3300 | T-102-2700 | T-102-3300 | T-102-2700 | T-102-3300 | T-102-2000 | T-102-2000 |
All TI-25 Series gauges offer the following common features: - Selectable measurement in millimetres or inches - Selectable LED backlight (ON / OFF / Auto) - Stability/Repeatibillity Indicator, a visual indicator with six-dashes (a full display = stable signal) - Manual zeroing of probes via integrated probe disk - All TI-25 series gauges use Dual Element probes - Automatic v-path / dual path error correction for improved accuracy (*) Different measurement ranges available depending on material and probes, contact us for more information. ** No self calibration option |
![]() | Minimum Radius for Convex Surfaces | 8.89 mm |
Minimum Radius for Concave Surfaces | 76.2 mm | |
![]() | Minimum Headroom | 25.0 mm |
![]() | Minimum Sample Diameter | 3.8 mm |
![]() | Minimum Substrate Thickness - F | N/A |
Minimum Substrate Thickness - NFe | N/A |
Measurement range (standard transducer on steel): | - TI-25MX, TI-25DLX & TI-25SX: 0.6 -150 mm - TI-25MXT & TI-25DLXT: Pulse - Echo 1.00 to 199.9mm, Echo - Echo 2.54 to 25.40 mm - TI-25PX & TI-25LTX: 1 - 150 mm |
Resolution: | 0.01 mm (0.05 mm for TI-25LTX) |
Measurement units: | Selectable in millimetres or inches |
Velocity Range: | Adjustable from 305 to 18,542 m/s (except TI-25LTX) |
Display: | - Large 4.5-digit LCD, character height: 13 mm - Selectable backlight (ON/OFF/Auto) - Segmented layout for clear display of advanced functions |
Display refresh rate: | 10 Hz |
Pulse rate: | 200 Hz (200 pulses per second) |
Probe cable: | 1.2 m waterproof cable with unpolarised connectors |
Power supply: | 2 × AA batteries (rechargeable batteries also supported) |
Battery life: | Up to 45 hours of continuous use (depending on battery type) |
Operating Temperature Limits: | - Environment: -30°C to +75°C - Material under test: -20°C to +100°C Probes for higher temperatures available on request |
Housing: | Extruded aluminium body with nickel-coated end caps, sealed construction |
Dimensions: | 63.5 × 31.5 × 131.3 mm (L × W × H) |
IP Rating: | IP65 rated |
Weight: | 308 g |
Shipping weight: | 1.45 kg |
Certification: | NIST-traceable and MIL-STD-45662A compliant, CE certified |
Warranty: | - Gauge: 5 years - Transducer: 90 days |