ETher Maxwell PECT In-Service Pulsed EC System

ETher Maxwell PECT In-Service Pulsed EC System

ETher Maxwell PECT
In-Service Pulsed Eddy Current Inspection System

ether maxwell pect

Maxwell NDT and ETher NDE offer the Maxwell NDT PECT system, a remarkably capable pulsed eddy current inspection system that has been designed with decades of practical in-service experience at its very core, by one of the founding fathers of Pulsed Eddy Current.

PECT has been developed primarily to detect corrosion hidden under insulation. It measures the remaining steel thicknes without removing insulation, coatings, deposits and marine growth. Previous instruments often lacked the power to be fast and effective. Using the latest battery technology, Maxwell NDT introduces a novel and very powerful PECT instrument with a design based on 20 years' hands-on experience at a global Oil Company.

There are many applications where this technology can be shown to be applicable such as: Corrosion under fire proofing of supporting legs of storage spheres, inspection of column skirts, flow accelerated corrosion (power plants), splash zones of offshore structures and risers, storage tank annular rings, sheet pilings (pore structures, jetties), subsea pipelines, remaining ligament under corrosion, repair wraps, well casings, ship hulls and high temperature wall thickness monitoring.

With unbeatable inspection capability and truly simple user interface, we challenge you to test the Maxwell system side by side against other PECT systems and prepare to be surprised.

The Maxwell NDT Pulsed Eddy Current (PECT) instrument has been designed to offer a superior signal to noise ratio when compared with other units currently available. This is part due to:

  • High Current Compact Magnetic Field Probe
  • Fast Single Pulse
  • High Current NiMH batteries (with not swappable capability) in conjunction with large conductor diameter cabling resulting in a high power pulse.


The resulting superior signal gives:

  • Large range in wall thickness (up to 2" / 50mm) and insulation thickness combined so well suited to vessel inspection not just piping.
  • High speed testing at high insulation / lift-off distance


Other Features Include:

  • Robust design making the unit compatible with the typical rigors associated with on-site use.
  • Easy to use and intuitive software designed with concern for the requirements of the NDT technician, including easy reporting both on the instrument and on a desktop PC.
  • Excel format data output gives intrinsic compatibilty with standard desktop applications for further analysis by the end user.
  • All inclusive lifetime pricing means no annual software support fee.

ether maxwell pect ether maxwell pect probes
PECT instrument, showing data acquisition tablet computer that is permanently attached to a data acquisition and pulse generating unit. Instrument operation is from a touch screen. Four standard probes: small, medium, large and extra-large, optimized for a specific lift-off range. The software assists the operator to select the best probe for each application.
ether maxwell pect case ether maxwell pect case
Transport cases for PECT instrument, chargers and batteries (left) and cables and sensors (right)



Specifications - Hardware:

Standard Set:
  • One PECT Instrument: data acquisition unit permanently connected to a TA10 Durabook data acquisition computer
  • Four standard probes
  • Two signal cables, each 8m long
  • Two batteries for PECT instrument
  • Three batteries for data acquisition computer
  • Two battery chargers and adapters
Optional Items:
  • 40m extension leads
  • Splash zone probes; 3m water depth with 50m umbilical (can be extended to 150m)
  • Underwater probes; 30m depth rating
  • Underwater probe; depth rating to 1000m
Data Acquisition Computer: DARABOOK TA10 10.4" Touch screen with LED backlight Sunlight Readable Display, Ambient Light Sensor and screen protector. Navigation keypad and quick keys; 8GB memory and 250 GB SSD.
Standard Probes: Four standard probes, Nominal lift-off ranges: 0" - 1", 1" - 3", 1.6" - 5" and 3" - 10" / 0 - 25mm, 25 - 75mm, 40 - 125mm and 75 - 250mm. Probe selection is automated at inspection set-up.
Batteries: Operation requires a first set of two batteries for the data acquisition computer and one heavy-duty battery for pulse generation. A standard set includes a second set of batteries which can be recharged indoors with two external charges. Batteries are hot-swappable.
Typical battery life: 8 hours
Data Storage: All PECT signals are fully stored in data files for verification purposes
Software: Data capture software enables quick generation of field reports; PC-based software for offline data verification and reporting
Communication: Wi-Fi, Bluetooth, USB 3.0 (x2)
Environment: IP 65
Salt and Fog resistant
Operating Temperature: 32° - 104°F / 0° - 40°C
Relative Humidity: <93%
Atmospheric Pressure: 70 - 105 kPa
Compliance: CE, FCC Part 15B
Transport of Standard Set: Two explorer cases 5823, each = 26" x 20" x 10" / 67 x 51 x 26cm. Weight = 51 lbs. / 23 kg each.
Transport of 25m extension lead: One explorer case 5823, 26" x 20" x 10" / 67 x 51 x 26cm. Weight = 33 lbs. / 15 kg. Cable is configured in a shape of a figure eight.
Transportation splash zone probes: One explorer case 7630, 34" x 22" x 14" / 86 x 56 x 36cm. Weight at 50m umbilical length = 68 lbs. / 31 kg.
Dimensions: 12" x 6" x 9" / 30 x 15 x 22cm
Weight: 17 lbs / 7.8 kg including batteries and data acquisition computer. The instrument is provided with 2 hoisting lugs.


Specifications - Instrument Operation:

Selection of measurement parameters: Probe selection and measurement parameters are automatically set at start of an inspection using test measurements.
Data storage: All PECT signals are fully stored in data files for verification purposes
Software: Data capture software enables quick generation of field reports
PC-based software for offline data verification and reporting
Data collection speed: Typical recording speed (second per reading):
0.12" / 3mm < WT ≤ 0.47" / 12mm; 0.5s
0.47" / 12mm < WT ≤ 0.98" / 25mm; 1s
0.98" / 25mm < WT ≤ 2" / 50mm; 2s
Note: The measurement time depends on a number of parameters that are hard to quantify, such as pipe vibration.

Scan mode: Data can be recorded point-by-point or in scan mode. The scan mode operation is designed not to deteriorate the reliability of the PECT data.


Specifications - Typical Performance Parameters:

Wall thickness range: 0" - 2" / 0 - 50mm steel
Maximum lift-off range: 0" - 10" / 0 - 250mm for WT ≤: 0.6" / 15mm
0" - 6" / 0 - 150mm for 0.6" / 15mm WT ≤: 1.2" / 30mm
0" - 2.4" / 0 - 60mm for 1.2" / 30mm < WT ≤: 2" / 50mm
Minimum pipe diameter: 0" / 0mm insulation: 2" / 50mm
2" / 50mm insulation: 3" / 75mm
Insulation sheeting: Aluminum and stainless. Performance on galvanized (magnetic) sheeting depends on its properties
Footprint diameter: Typically 1.5 times the thickness of the insulation, with a minimum of 0.98" / 25mm
Typical accuracy of the average wall thickness in the footprint: ±10%
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