- Weighs only 800g with battery
- One-hand-operation
- Only few keys for user friendly menu navigation
- High resolution (800 x 480 pixels ) WVGA display
- Removable Micro SD card up to 8 GB
- USB communication port
- Auto plotting dynamic DAC
- On Board DGS/AVG for defect size evaluation
- Software for AWS D1.1 Sizing
- Test Range : 2.5mm to 5 meters (In steel)
- Square Wave Pulser
Arjun20 - Ultrasonic Flaw Detector - Salient Features
| Technical Specifications | |
|---|---|
| Test Range | 2.5 mm to 5 meter (in steel). Fine mode adjustable in step of 1mm. |
| Velocity | 1000 m/s to 15000 m/s. In Hot Key mode it has 21 pre-set values.Fine mode adjustable in step of 1 m/s. |
| Delay | Up to 120mm adjustable in 0.01mm, 0.1 or 1mm step. |
| Gain | 100 dB calibrated gain adjustable in 0.1, 0.5, 1, 2, 6 or 14 dB step. |
| Rejection | 0 to 125% FSH with LED indicator. |
| Rectification | Full wave rectified with filtering. |
| Frequency | 0.5 MHz to 15 MHz (Wideband). |
| Linearity deviation | Vertical: ±3%, Horizontal: ±0.5%. |
| Test Modes | Pulse echo and transmit/receive. |
| Measuring Resolution | 0.01mm |
| Probe Connectors | LEMO Size 00 (2 nos). |
| Monitor | Dual gate adjustable in 1% of Screen width with Positive/Negative logic,Gate Expand modes. |
| Gate Expand | Expands Range to width of the gate. |
| A-Scan memory | 500 Trace Patterns can be stored, recalled or transferred to PC via USB port. A-Scan trace pattern can be directly stored on SD card or on External USB disk. |
| Calibration Set-up | 50 different calibration set-ups can be Stored and Recalled. |
| Software | ArjnSoft Interface software for Data transfer, Analysis, Reporting and Printing |
| USB and SD card | External USB disk and Micro SD card (up to 8GB) ports provided for data storage. |
| Display | 5 inch Colour Wide VGA LCD/TFT display (800×480 pixel, size 108×64 mm) with higher resolution LCD for better signal representation and better visibility with different colour sets. |
| Reference A-Scan | Reference A-Scan pattern of standard test object can be saved and recalled in the background for easy comparison during testing. |
| Echo Dynamic | Echo Dynamic pattern display. |
| Dynamic DAC | Dynamic DAC curve can be Digitally plotted (Smooth parabolic curve) on screen with selectable additional offset curves from 0 to 14 dB in 0.1 dB selectable steps. DAC curve can be set as flaw monitor gate and can be plotted using minimum 2 to maximum 10 points. |
| DGS | Defect size evaluation using predefined probe settings and custom probe set-ups,ERS (Equivalent Reflector Size) can also be displayed on the screen. |
| AWS | Built in Software for Evaluation of defects in accordance with AWS Specification D1.1. |
| Digital Readout And Trig. Function | Thickness/Depth can be displayed in digital readout when using a normal probe and Beam path, Surface Distance and Depth are directly displayed when angle probe is in use. |
| Update Rate | 50Hz. |
| Power | Lithium-Ion Battery pack 7.4VDC, 5AH. External charger is provided to charge the battery without engaging the main unit. |
| Battery Life | 8 Hours on Full Charge |
| Charger | Input Voltage 100 to 240 VAC. Charge status indicator is provided. |
| Temperature | 0 to 55°C. |
| Size | 117 x 176 x 56 mm (HxWxD). |
| Weight | 800 gms with Li-Ion Battery. |
| Compliance | Ultrasound: EN 12668, ASTM E317 |
Frequently Asked Questions
What makes the Arjun 20 stand out as a portable flaw detector?
The Arjun 20 weighs only 800g with battery and is designed for one-hand operation with just a few keys for user-friendly menu navigation. It packs a 5-inch WVGA colour display, Square Wave Pulser, on-board DGS/AVG, auto-plotting dynamic DAC, and AWS D1.1 sizing software into a compact 117×176×56 mm body — making it highly practical for field and workshop NDT inspection.
What is the test range and frequency range of the Arjun 20?
The Arjun 20 covers a test range of 2.5 mm to 5 metres in steel with Fine mode adjustable in 1 mm steps, and a wideband frequency range of 0.5 MHz to 15 MHz.
How many A-Scans and calibration set-ups can the Arjun 20 store?
The Arjun 20 stores up to 500 A-Scan trace patterns that can be recalled or transferred to a PC via USB port, or saved directly on a Micro SD card (up to 8 GB) or external USB disk. It also supports 50 storable and recallable calibration set-ups.
What are the DGS and DAC capabilities of the Arjun 20?
The Arjun 20 features on-board DGS/AVG for defect size evaluation using predefined and custom probe set-ups, with ERS (Equivalent Reflector Size) displayed directly on screen. Its auto-plotting dynamic DAC generates a smooth parabolic curve with selectable offset curves from 0 to 14 dB in 0.1 dB steps, plotted using 2 to 10 reference points.
What is the measuring resolution of the Arjun 20?
The Arjun 20 has a measuring resolution of 0.01 mm, making it precise enough for fine thickness and depth readouts when using a normal probe, and displays beam path, surface distance, and depth directly when an angle probe is in use.
What is the battery life and weight of the Arjun 20?
The Arjun 20 weighs only 800g including the Lithium-Ion battery (7.4V DC, 5 AH) and provides 8 hours of continuous operation on a full charge. An external charger is supplied so the battery can be charged independently without occupying the main unit.
What compliance standards does the Arjun 20 meet?
The Arjun 20 is compliant with EN 12668 and ASTM E317 ultrasound standards, and includes built-in software for weld defect evaluation in accordance with AWS Specification D1.1.