Alphagage+ Corrosion HIDDEN
As a primary inspection tool for corrosion assessments, the Sonatest AlphaGage+ instrument uses dual element transducers in a Pitch & Catch configuration to measure accurately the remaining wall thickness of metal structures subject to corrosion.

Overview
Dual element transducers have a transmitting element and separate receiving element located side by side, the use of Pitch & Catch reduces any measurement problems which may result from material surface issues.
This product is a key tool to inspect ageing assets and solve problems in many industries but especially, Oil & Gas or Petrochemicals.
Typical applications include:
- Metal pipe works
- Pressure vessels
- Structural parts
- Storage tanks
Features
True Thickness (under coating)
When a metal surface is protected by anti-corrosion paint or coating, true wall thickness measurement using Echo-to-Echo function is a key feature and available on all AlphaGage+ models.
Field Upgradable Features
Upgradable in the field, the AlphaGage+ is a flexible solution as it can be fully loaded from the start or upgraded anytime later by easily activating software options when required.

Data Logger (B-Scan)
Thickness readings with ID location for corrosion mapping or profile assessment and send readings to Microsoft Excel™ for further asset maintenance evaluation.

Live Waveform (A-Scan)
Display live A-scan for echo verification and real time control of acoustic range, rectification, gain and blanks or combine the A-Scan with B-Scan view for even more detailed analysis.

AlphaGage+ Standard Features
- Echo-to-Echo functionalities
- Up to 27 Hour battery life (high-capacity re-chargeable battery pack via the USB port)
- Change colour and vibrate on alarm (ideal for inspections in loud environments)
- Wide thickness range
- Inches, mm or μSec
- Velocity mode
- Fast Min/Max mode to display actual thickness and minimum and maximum at the same time
- Gain, range, rectification, blank adjustments with live waveform
- Datalogger 2 Gb micro SD card standard expandable to 32 Gb
- Datalogger interfaces with Microsoft Excel
- Multiple languages
Specification
| Measurements | |
| Transducers | Single or Dual element (according to gauge model) |
| Thickness Range (fct. of probe & material) | Typical range in steel (corrosion mode): 0.508mm to 584mm (0.020”-23”) |
| Velocity Range | 0.508 to 18.699 mm/s (0.0200 to 0.7362 in/s) |
| Resolution | On corrosion mode: 0.01 mm or 0.1 mm (.001” or .010”) |
| Measurement Rate | 4 Hz or 25 Hz |
| Bandwidth | 0.5 MHz to 30 Mhz (-3dB) |
| Differential Mode | Displays the difference from actual thickness measurement in absolute or percentage of a user entered reference value |
| Fast Min/Max | Displays minimum and maximum simultaneously with actual thickness at up to 25 Hz |
| Gain Settings | Manual adjustment (Low, Standard, High) and Automated Gain Control (AGC) |
| Alarms | According to alarm conditions, the gauge can vibrate (ideal for loud environments), beep or change the colour of the main display |
| Enclosure | |
| Connector Type | Lemo 00 |
| Size | Length 184 mm (7.25”) x Width 102 mm (4.00”) x Height 51 mm (2.00”) |
| Weight | 520 g (1.2 lb) with internal Li-ion battery 450 g (1.0 lb) with optional alkaline tray (3xAA batteries) |
| Display | 3.5” high resolution colour TFT display, 320 x 240 pixels, sunlight readable, including multiple colour pallets |
| Backlight Management | Light Emitting Diode (LED) backlight, includes variable light intensity |
| General | |
| Operating Temperature | -20 to 50°C (-4 to 122°F) |
| Operating Time | 27h @ 4 Hz & 11h @ 25Hz in continuous operation with standard 3.7V Li-ion internally rechargeable battery (optional alkaline tray 3xAA batteries available for extended life) |
| Setup Storage | Internal memory for up to 2,700 calibration and preset setup fields |
| Data Storage | With Data Logging (DL) option, a 2GB micro SD card is included (expandable up to 32GB) |
| UI Languages | English, French, German, Spanish, Italian, Russian, Czech, Finnish, Chinese, Japanese, Hungarian |
| Certifications | CE certified, RHOS complaint and designed for IP67 |
| Warranty Limited | 2 year warranty under normal use on parts and labor |
Accessories
Standard Model: Alphagage+ C
| Echo-to-Echo functionalities |
| 2 GB microSD card |
| AC power adapter & USB cable |
| Standard 3.7V Li-ion internally rechargeable battery |
| Plastic carrying case |
| One couplant bottle |
| CD with manual |
| Data XLS interface program to export saved readings to PC. (Microsoft Excel) |
| NIST traceable calibration certificate |
Accessories Included
| Access to dual and single element probe database |
| One DKS-537 transducer (5 MHz. .375" diameter transducer with potted cable) |
Standard Model: AlphaGage+ CDL
With Data Logging software feature:
| Datalogger functionalities |
| B-Scan (time based) |
| Temperature correction |
Standard Model: AlphaGage+ CW
with Waveform software feature including:
| Live A-Scan |
| Positive/Negative/Full signal rectification |
| Adjustable range |
| Temperature correction |
| Coating thickness |
Standard Model: AlphaGage+ CDLW
| Includes all of the above |
| Rubber Boot with Neck Strap |
Recommended Accessories
| Product Code | Description |
|---|---|
| 149103 | AlphaGage+ Plastic Carry Case |
| 149104 | AlphaGage+ Li-ion Battery Pack |
| 149105 | AlphaGage+ Rubber Boot & Neck Strap |
| 149106 | AlphaGage+ Alkaline Battery Pack |
| 149107 | AlphaGage+ Charger with USB |
| 149108 | AlphaGage+ Magnetic Ball Head |
| 149109 | AlphaGage+ Neck Strap |
| USB-09-6 | AlphaGage+ Mini USB cable 6 foot |
