Portagauge® 3

Low cost ultrasonic thickness gauge, ideal for corrosion inspection requirements. Competitive, simple to use, highly robust, also known as Marine Superintendant’s Thickness Gauge.

3rd Generation Ultrasonic Single Echo Thickness Gauge
P/N: 2099382-3
NSN: 6680-99-192-2735
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Portagauge® 3 is designed to be as simple and durable as possible. Submit an enquiry and our expert team will send you pricing and information within 24 hours.

Six Core Benefits: make corrosion and thickness testing faster, better and safer

  1. Quick testing allows the user to test a large range of metals within a short period of time. Simple enough for any operator, with quick training for reliable and accurate testing. Only 2 controls (on & off) the device offers an effortless, plug and play method for quickly inspecting large metal surfaces.
  2. Ideal for a wide range of industrial applications: fire cylinders, ship hulls, pipework, storage tanks. Ability to work on heavily corroded metal. This is especially valuable when inspecting pipework, hulls, process machinery for example.
  3. Low CostThe simplicity of Portagauge® 3 means reliable results are achieved at the lowest cost to our customers. The quality units are built to ensure they meet high standards.
  4. Highly accurate units – measurements in steps of 0.1mm from 1.5mm – 99.9mm.
  5. Portable unit, lightweight, compact and with long-term reliability. Comes complete with a a robust case, sensor, operating instructions etc.
  6. Versatile – A variety of different sensor options are also available, including:
  • 6mm Thin Material probe – measuring range 1.5mm to 50mm and ideal for thin diameter applications such as small pipework
  • 10mm Standard Probe – measuring range 1.5mm – 99.9mm and ideal for the vast majority of measurement applications
  • 12mm High Temperature Probe – range 4mm to 99.9mm and capable of operating on metal surfaces up to 70C / 160F

Stay Compliant With The Regulations
Portagauge® 3 enables you to go above and beyond regulatory compliance.

NFPA 25 – Standard for the Inspection, Testing and Maintenance of Water-Based Fire Protection Systems

9.2.7 Tests During Interior Inspection. Where a drained interior inspection of a steel tank is required by, the following tests shall be conducted:

(3) Non-destructive ultrasonic readings shall be taken to evaluate the wall thickness where there is evidence of pitting or corrosion

(5) Tank bottoms shall be tested for metal loss and/or rust on the underside by use of ultrasonic testing where there is evidence of pitting or corrosion

NFPA 13 – Standard for the Installation of Sprinkler System

References made to NFPA 25 for regular inspection, testing and maintenance.

How it works in 3 Simple Steps

  1. Connect the sensors to the unit (red to red and black to black)
  2. Press the “On” button on the Portagauge® 3 unit.
  3. Apply ultrasonic gel and place the sensor firmly on the metal surface that you are testing and the Portagauge® will instantly tell you a measurement of the metal thickness in mm.


Package contains:

  • Main Portagauge® 3 Unit
  • Standard Sensor and Cable
  • Calibration Testing Block
  • Calibration Certificate
  • Ultrasonic Gel
  • Operating Instructions
  • Durable Watertight Peli™ Case

Portagauge® 3 - Calibration Block for Ultrasonic Testing

Measuring devices are only useful when they provide accurate readings, at Coltraco we stock calibration standards with certification. Calibration is the act of evaluating and adjusting both the precision and accuracy of measurement equipment. When it comes to ultrasonic testing, a number of different forms of calibration must be involved. First, the electronics of the equipment need to be calibrated to make sure that they are performing as necessary. This operation will be performed by the product. It's also required that the operator performs a "user calibration" of the equipment, the user calibration is needed as most ultrasonic equipment can be reconfigured for use in a range of applications. The user will "calibrate" the system, this covers the equipment settings, the transducer, and the test setup and will validate the desired level of precision to ensure that accuracy is achieved. The term calibration standard is  used when a value is measured and in many cases, the standards will be traceable back to standards at the National Institute for Standards and Technology


  • Height: 140mm
  • Width: 80mm
  • Depth: 30mm
  • Weight: 300grams

Thickness Measuring Range

1.5mm - 99.9mm


+/- 0.1mm

Power Supply

PP3  (replaceable) – Average 25,000 plus measurements per battery low charge indication

Detectable Sound Velocity

500-9000 m/s

Operating Temperature

-20°C to +70°C (68°F to 158°F)


  • CE
  • ISO 9001 Registered
  • ISO 14001 Registered Company

Minimum Pipe Diameter

  • 10mm sensor: 1 ½ in or 38mm + above
  • 6mm sensor: 1 ½ in or 38mm + below


Main Unit: 3 Years Warranty Sensor: 1 Year Warranty Lifetime Customer Support

Operating Tempurature

-20 to +70C / 10-90 & RH

Package Contents

  • Main Portagauge® 3 Unit
  • Standard Sensor and Cable
  • Calibration Testing Block
  • Calibration Certificate
  • Ultrasonic Gel
  • Operating Instructions
  • Durable Watertight Peli™ Case
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