At ARUN Technology, our Optical Emission Spectrometers (OES) set the benchmark for precise and reliable metal alloy analysis. Both the ARTUS 8 and MERLIN 4 are designed to deliver fast, accurate results with intuitive software, bespoke calibrations, and extensive grade libraries. But how do you decide which model is right for your needs?
Let’s break it down.
Understanding the Key Differences
Both the ARTUS 8 and MERLIN 4 use advanced detector technology to analyse metal compositions, but they differ in the number and configuration of their detectors.
MERLIN 4 Series:
- Available in Visible and Ultra models
- Equipped with 11 or 12 detectors
- Wavelength detection range: 205-521nm (Visible) or 175-521nm (Ultra)
- Best for non-ferrous applications where far UV detection is not required
ARTUS 8 Series:
- Available in Standard and Ultimate models
- Features a dual optic system for separate visible and UV wavelength processing
- Equipped with 14 (Standard) or 15 (Ultimate) detectors
- Wavelength detection range: 170-680nm (Standard) or 140-680nm (Ultimate)
- Ideal for ferrous applications and elements requiring far UV detection, such as Nitrogen
Which Model is Right for You?
Choosing between the ARTUS 8 and MERLIN 4 depends on your specific analytical requirements.
Here’s a quick guide:
| Application | Best Model |
| Non-ferrous applications where UV elements are not required | MERLIN 4 Visible |
| Applications requiring some UV element detection (e.g. C, P, S, As, Sn, B) | MERLIN 4 Ultra |
| Ferrous applications with important elements in the UV range (e.g. C, P, S, As, Sn, B) | ARTUS 8 Standard |
| Advanced applications requiring far UV element detection (e.g. Nitrogen) | ARTUS 8 Ultimate |
Performance & Efficiency
The ARTUS 8 models provide a broader detection range, making them better suited for applications requiring far UV element analysis. Meanwhile, the MERLIN 4 models offer excellent performance for non-ferrous metals and applications where far UV detection isn’t necessary.
Both spectrometers ensure low operating costs, efficient argon consumption, and compact designs for laboratory and industrial use.
Making Your Decision
If your work demands comprehensive element detection, including far UV elements like Nitrogen, the ARTUS 8 Ultimate is the best choice. However, if your needs are more focused on non-ferrous metals and standard UV range detection, the MERLIN 4 Ultra provides a cost-effective solution.
Need further guidance?
Contact our team at sales@aruntechnology.com for expert advice on selecting the right OES for your needs!
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All technical information and data presented in this article are intended as a general guide only. Specifications, performance, and applications may vary depending on operating conditions. ARUN Technology Ltd. accepts no responsibility for errors or omissions. Reproduction, distribution, or use of this material without prior written permission is strictly prohibited.
