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Raising the Bar For Gold Bullion Testing


Gold bullion testing with Olympus XRF Analyzers
Vanta Handheld XRF Analyzer

Benefits of Vanta™ XRF Analyzers

When accuracy and confidence count, the Olympus Vanta XRF instrument provides immediate, on-site elemental measurements for analyzing precious metals, including gold, platinum, silver, and rhodium. Features include:

continuous operation

Continuous operation at temperatures up to 50° C (122 °F).*1

IP55/IP54 rated

IP55/IP54 rated to withstand dirt, dust, and rain.

Rugged

Rugged and built to pass a 1.2 m (4 ft) drop test (MIL‑STD-810G) to help prevent breakages.

Rugged

Connect to the Olympus Scientific Cloud™ to access and share data across multiple platforms from any location.*2

*1 With optional fan.
*2 Requires optional wireless dongle.

Olympus portable X-ray fluorescence (XRF) analyzers provide users with accurate surface chemistry of bullion bars, while Olympus ultrasonic flaw detectors provide a nondestructive, fast, and reliable method for helping ensure that gold bars have not been adulterated. Combined, these two technologies enable users to be confident in the purity and integrity of their bullion bars.

Analysis without the need for drilling or cutting

The rise in fraudulently adulterated gold bullion bars by inserting slugs of inexpensive metals (such as tungsten) is a concern for gold markets. These insertions are difficult, and often impossible, to identify visually, by measuring the weight, or using radiography technologies. Portable XRF analyzers provide accurate analysis of precious metals, but are limited to the surface of the metal that is being analyzed.

Ultrasonic flaw detectors can be used to ensure that a bullion bar is homogeneous and free of insertions. When combined with portable XRF results, users can be confident that the surface chemistry obtained by their Vanta XRF analyzer is representative of the chemistry throughout the entire bar.

Ultrasonic flaw detectors work by generating pulses of high-frequency sound waves in a material, which then reflect back to their source after they strike a boundary with a different material. This could be the bottom of the gold bar, an insertion within the gold bar (e.g. a tungsten metal insertion), or an internal void. Olympus flaw detectors can be used to distinguish between waves reflecting from the bottom of the gold bar and waves reflecting from insertions or internal voids.

Gold Bar test with UT

This test is set up by coupling the transducer to a known good bar and identifying the echo from the bottom surface. A flaw gate may be used to monitor the interval ahead of this back wall. Any echoes appearing within the region marked by the gate indicate that the sound beam is reflecting off a discontinuity, and the bar should be further inspected by other means.

Vanta Handheld XRF Analyzer

Benefits of Vanta™ XRF Analyzers

When accuracy and confidence count, the Olympus Vanta XRF instrument provides immediate, on-site elemental measurements for analyzing precious metals, including gold, platinum, silver, and rhodium. Features include:

  • Continuous operation at temperatures up to 50° C (122 °F).*1
  • IP55/IP54 rated to withstand dirt, dust, and rain.
  • Rugged and built to pass a 1.2 m (4 ft) drop test (MIL‑STD-810G) to help prevent breakages.
  • Connect to the Olympus Scientific Cloud™ to access and share data across multiple platforms from any location.*2

*1 With optional fan.
*2 Requires optional wireless dongle.

Olympus IMS
Products used for this application

The single group, lightweight OmniScan SX features an easy-to-read 8.4 inch (21.3 cm) touch screen and provides cost-effective solutions. The OmniScan SX comes in two models: the SX PA and SX UT. The SX PA is a 16:64PR unit, which, like the UT-only SX UT, is equipped with a conventional UT channel for P/E, P-C or TOFD inspections.
Vanta handheld XRF analyzers are some of the toughest devices Olympus has ever made. These rugged, powerful, and intuitive instruments provide rapid, accurate element analysis and alloy identifications to customers who demand laboratory-quality results in the field.
The OmniScan MX2 now features a new phased array module (PA2) with a UT channel, and a new two-channel conventional ultrasound module (UT2) that can be used for TOFD (Time-of-Flight Diffraction), as well as new software programs that expand the capabilities of the successful OmniScan MX2 platform.
The EPOCH 650 is a conventional ultrasonic flaw detector with excellent inspection performance and usability for a wide variety of applications. This intuitive, rugged instrument is a continuation of the popular EPOCH 600 flaw detector with additional capabilities.
The GoldXpert is a stylish countertop analyzer fit for the consumer showroom environment. Designed to be compact and lightweight, weighing only 22 lbs (10kg), the GoldXpert can be transported easily to wherever testing is needed. The GoldXpert gives accurate chemistry and karat results within seconds.
The EPOCH 1000 is an advanced conventional ultrasonic flaw detector that can be upgraded with phased array imaging at an authorized Olympus service center. Key features include: EN12668-1 compliant, 37 digital receiver filter selections, and 6 kHz pulse repetition rate for high speed scanning.
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