Checkline TI-25SX Ultrasonic Wall Thickness Gauge kit with T-102-3300 Probe

Price: $ 1,250.00

Checkline TI-25SX General Purpose Ultrasonic Wall Thickness Gauge
General Purpose Ultrasonic Wall Thickness Gauge with 8 Presets and Adjustable Velocity
Includes NIST-Traceable Calibration Certificate, CE-Certified
5-Year Warranty, Made in USA
Datalogging: NO

Total Measuring Range (depends on material and transducer/probe type)
0.025 - 36.000 inches
0.63 - 914.4 mm

Measuring Range on Steel (with standard T-102-3300 probe)
0.025 - 6.00 inches
0.60 - 150.0 mm

The TI-25SX allows the operator to select from 8 preset materials as well as program 2 custom material velocities allowing the user to tune the calibration to be optimized for a specific type of material. The calibration can be locked to prevent any accidental adjustments. The preset materials are as follows:

  1. Steel 4340
  2. Stainless 303
  3. Aluminum 2024
  4. Cast Iron
  5. Plexiglass
  6. PVC
  7. Polystyrene
  8. Polyurethane
  9. Custom1
  10. Custom2


  • Resolution of 0.001 inch (0.01 mm)
  • The Transducer (probe) is waterproof and can be submerged in shallow water
  • Special-purpose probes are offered for a variety of applications (1 to 10 MHz)
  • Switch-selected units for inches or mm
  • The extruded aluminum housing is impact-resistant and environmentally sealed (IP 65)
    to provide trouble-free operation under the toughest field conditions
  • For underwater surveying, an optional 50 ft (15 meter) underwater probe/cable is available
  • High visibility LCD Display is readable in all lighting conditions and temps as low as 22 F (-30 C)
  • LCD shows Thickness Value, Velocity Setting, Stability Indicator, Battery Indicator and units
  • Acoustic Velocity (calibration) is manually adjusted via the keypad
  • 5 Year Warranty, CE-Certified and Made in USA
  • Operates on two (2) AA Batteries - 45 hours continuous operation
  • Selectable Backlight ON/OFF/AUTO
  • Includes NIST Traceable Calibration Certificate

Measuring Limits

Minimum Radius for Convex Surfaces0.350" (8.89 mm)
Minimum Radius for Concave Surfaces3" (76.2 mm)
Minimum Headroom1" (25.0 mm)
Minimum Sample Diameter0.150" (3.8 mm)
Minimum Substrate Thickness - Fna
Minimum Substrate Thickness - NFena


Total Measuring Range
0.025 - 36.000 inches
0.63 - 914.4 mm
(depends on material and transducer/probe type)
Measuring Range
0.025-6.000 inches
0.60-150.0 mm
(with standard transducer T-102-3300)
Resolution0.004 inch (0.1 mm)
Measuring ModePulse-Echo (P-E)
Velocity Range0.0120 to .7300 in/s (305 to 18,542 m/sec)
Probe (Standard)1/4", 5 MHz Dual Element Transducer, actual wearface is 5/8" (17mm), p/n T-102-3300
Probes (optional)1 to 10 MHz, 3/16" up to 1 inch (custom probes available)
Probe WearfacePEEK (Polyethylethylkytone)
Cable1.2m (4ft.) waterproof cable with non-polarized, quick-disconnect connectors
LCD DisplayMulti-function 7 segment 4.5 digit liquid crystal display with 0.500" digit height. Two 0.125 in14 segment fields for labels and values, and one 7 segment field for labels and values. Additional icons to indicate features and modes
Display BacklightBacklight is selectable on/off/auto, and selectable brightness (Lo, Med, Hi) options
Display Update Rate10 Hz (10 updates/sec)
Temp. LimitsAmbient: -30 to 75 C (-22 to 167 F)
Material: -20 to 100 C (0 to 200 F)
High temperature probes available
Battery Type2x AA batteries (rechargeable batteries can be used)
Battery Life45 hours continuous use
Weight308 grams (11 ounces)
Dimensions63.5 x 131.3 x 31.5 mm (2.5" x 5.17" x 1.25")
AccessoriesProbe/cable assembly, 4 oz. bottle of coupling fluid, NIST Calibration Certificate, 2 AA batteries, operating instructions, hard-plastic carrying case.
HousingExtruded aluminum body with nickel-plated aluminum end caps (gasket sealed)
Housing RatingIP65
CertificationsNIST Traceable and MIL-STD-45662A
KeypadSealed membrane that is resistant to both water and petroleum products
Seven or eight tactile-feedback keys
Pulse Repetition Frequency (PRF)200 Hz (200 pulses/sec)
WarrantyGauge: 5 Years
Probes: 90 Days

Related Products

Protective Rubber Boot for TI / ZX Series Small Body Ultrasonic Thickness Gauges

  • Built-in Stand
  • Hand and Shoulder Straps


Coupling Fluid

  • Temp Range: 0 - 200 F, -18 - 93 C


Certified Steel Test Blocks

  • Precision Machined and Finished
  • Includes Wooden Storage Box
  • Includes NIST Traceable Calibration Cert


SB Step Blok
Steel Test Blocks without certification

  • Fabricated from 1018 Steel
  • Supplied without certification


50 Foot Underwater Probe / Cable Assembly

  • 50 Ft. Length, Waterproof Probe/Cable assembly with non-polarized, Dual-Lemo connectors


Ultrasonic Transducer Holder


Complete Kit

The TI-25SX is supplied as a complete kit with the gauge, probe, 4 oz. bottle of coupling fluid, 2 AA batteries, NIST-Traceable Calibration Certificate, and Operating Instruction Manual - all in a foam-fitted carrying case.


Checkline TI-25SX General Purpose Ultrasonic Wall Thickness Gauge - Data Sheet
Checkline TI-25SX General Purpose Ultrasonic Wall Thickness Gauge - Instruction Manual

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Product Price
Checkline TI-25SX Ultrasonic Wall Thickness Gauge kit with T-102-3300 Probe $1,250.00
Accessories Price
CF12 Coupling Fluid - 12oz $30.00
V-Block Transducer Holder $175.00
T-102-3300 Spare / Replacement Probe for TI-25M $320.00
T-102-2000 Spare / Replacement Probe for MX-1 $285.00
T-104-1000 Wall Thickness Gauges Spare / Replacement Probe for TI-25M-107 $295.00
T-044-2000 Spare / Replacement Probe for TI-25M-H $370.00
T-104-2000 Spare / Replacement Probe for TI-25M-HW $295.00
T-212-2001 1/4 inch - 5 MHz Hi Temp - 900 degrees F / 500 degrees C Dual Microdot $445.00
T-102-1000 1/4 inch dia. 2.25 MHz transducer $285.00
BATT-RC4AA-WC 4-pack 2300mAh AA Ni-MH Rechargeable Batteries and Charger Kit $35.00
T-104-0000 1/2 inch dia 1.0 MHz transducer for composites, thick plastics, rubber $290.00
SB4 4 Step Steel Test Block, 0.1 / 0.2 / 0.4 / 0.6 inch - Uncertified $125.00
A-302-6002 Protective Rubber Boot for TI / ZX Series Small Body Ultrasonic Thickness Gauges $80.00
T-101-2000-C 3/16" diameter, 5.0 MHz dual element transducer with minimal contact area $325.00
T-042-2000 1/4" 5.00 MHz Hi-Temp Transducer, 650°F / 343°C $370.00



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