The Cygnus 4PLUS is a small and tough multi-mode ultrasonic thickness gauge which features an A-scan display, simple to use sequential data logging and manual and automatic gain control.
Designed for the harshest of environments, with a simple to use keypad, intuitive menus and a colour LCD display which can be viewed in all lighting conditions.
The twin shot injection moulded enclosure has a soft but durable TPE outer skin which is comfortable to hold and protects against bumps while the hard internal shell offers maximum strength and environmental protection certified to the demanding US MIL STD 810G standard.
The unit still relies on Multiple-Echo to provide simple and accurate measurements, with the added benefit of Echo-Echo and Single-Echo using twin crystal probes for extreme corrosion. Echo-Echo for measurements on painted metals but with heavy back wall corrosion / pitting and Single-Echo for measurements on uncoated surfaces with heavy front face and/or back-wall corrosion and attenuative materials such as cast metals or plastics / composites.
Cygnus Instruments builds all of its equipment in the UK using only genuine and original parts and components – including Lemo® Connectors and Peli® Cases.
*For more details, visit the CygLink Software page in PRODUCTS > THICKNESS GAUGING ACCESSORIES section.
|Measuring Modes||Multiple-Echo using 3 sound pulses to ignore coatings up to 20 mm thick
Echo-Echo using 2 sound pulses to ignore coatings up 1 mm thick
Single-Echo using 1 sound pulse
|Materials||Sound velocities between 1000 – 9000 m/s – covers virtually all common engineering materials|
|Accuracy||±0.1 mm or 0.1% of thickness measurement, whichever is greatest, when calibrated in accordance with Cygnus Instruments calibration procedure|
|Resolution||Multiple-Echo mode – 0.1 mm or 0.05 mm
Single-Echo and Echo-Echo modes – 0.01 mm
|Measurement Range in Steel||Single Crystal Probes in Multiple-Echo:
Twin Crystal Probes in Single-Echo:
Twin Crystal Probes in Echo-Echo:
|Connector||Twin Lemo 00|
|Power||3 x AA batteries|
|Battery Life||10 hours minimum|
|Electronics||Dual channel pulser|
|Display||2.4″ quarter VGA LCD|
|Size||132 x 82 x 34 mm|
|Weight||300 grams (inc. batteries)|
|Operating Temperature||-10°C to 50°C|
|Data Logging||Capacity up to 5,000 points including A-scans|
|Computer Software||CygLink allows remote logging and viewing of A-scan graphs
Survey and report generation to PDF file
Data can be exported as a .csv file
Graphic analysis of data and statistical calculations
Designed for Windows 7 and Windows 8.
|Environmental Rating||IP67 (dust tight and immersion – 1 metre for 30 mins)
Explosive Atmosphere: Safe operation as defined by Class I, Division 2, Group D, as found in the National Fire Protection Association Code (NFPA 70), Article 500, and tested using MIL STD 810G Method 511.5, Procedure I
MIL STD 810G Method 501.6 (high temp +55°C)
MIL STD 810G Method 502.6 (low temp -20°C)
MIL STD 810G Method 507.6 (humidity 95%)
MIL STD 810G Method 512.6 (immersion – 1 metre for 30 mins)
|Shock and Impact||MIL STD 810G Method 514.7 (vibration – 1 hour each axis)
MIL STD 810G Method 516.7 (shock 20g – 11ms half sine shock pulse, 40g 11ms in each axis)
MIL STD 810G Method 516.7 (26 drops – transit drop 1.22 m)
|Compliance||CE, British Standard BS EN 15317:2013|
|Environmental||RoHS, WEEE compliant|
|Warranty||3 years on gauge and 6 months on probe|
Stainless Steel INOX Single Crystal Probes
The INOX probes have an updated ergonomic design and an easier to read frequency, identification and serial numbering. All frequencies of INOX probes have a black face and a colour coding ring to identify probe frequency.
Used in Multiple-Echo mode, these probes require no zeroing, have a high linear accuracy, are ideal for general thickness gauging and on pipes and have replaceable wear membrane for long life.
Stainless Steel INOX Twin Crystal Probes
Used in Echo-Echo and Single-Echo modes and focussed ultrasound beam with improved measurability on extreme back wall corrosion and pitting.
For optimum performance of the ultrasonic thickness gauge it is essential to utilise the appropriate probe for the specific material being tested. Here below are the probe options available.
|Single Crystal Probes:||6 mm – 5 MHz (S5A)|
|13 mm – 2.25 MHz (S2C (standard)), 3.5 MHz (S3C) or 5 MHz (S5C)|
|19 mm – 2.25 MHz (S2D)|
|Twin Crystal Probes:||5 mm – 7.5 MHz (T7A)|
|8 mm – 5 MHz (T5B (standard))|
|12 mm – 2 MHz (T2C (for attenuative materials such as cast metals, plastics and composites))|
Using standard industry connectors the probe lead uses a custom made over moulded cable that offers superior flexibility and resistance to oils and ultraviolet light. The cable will not stiffen after exposure to ultraviolet light.
Multiple-Echo uses three back wall echoes and measures remaining metal thickness while ignoring coatings. All measurements are error checked using 3 return echoes to give repeatable, reliable results. Accepted by all major classification societies. Uses single crystal probes for linear accuracy (and no probe zero required).
Echo-Echo uses two back wall echoes and measures remaining metal thickness while ignoring coatings up to 1 mm thick using twin crystal probes for improved detection of back wall corrosion and pitting.
Single-Echo uses one back wall echo, measures remaining metal thickness on uncoated surfaces and is possibly helpful for areas with extreme front face or back wall corrosion and pitting. Effective on highly attenuative materials such as cast metals, plastics and composites.
This clever technique helps ensure only stable measurements are displayed in Echo-Echo and Single-Echo modes. Displayed measurements change color from red to green and vibrate alert to indicate a stable reading.
Along with the wrist and neck straps supplied in the kit there is also an optional belt clip, offering a range of flexible handling solutions for all types of applications.