EXPEC 4820N – Spark Optical Emission Spectrometer

Brand: EXPEC
Model: 4820N
Product Type: Spark Optical Emission Spectrometer
Category: Material Analysis → Spark Spectrometer

Overview

The EXPEC 4820N Spark Optical Emission Spectrometer is designed for rapid and reliable elemental analysis of solid metal samples in foundries, metal-processing facilities, incoming inspection areas and metallurgical laboratories.

The system uses spark optical emission spectroscopy to excite the sample surface under a high-purity argon atmosphere. The emitted light is separated by the optical system and measured by CMOS detectors to determine the concentration of alloying and trace elements.

The EXPEC 4820N combines full-spectrum measurement, programmable digital excitation, multi-line analysis and intelligent spectrum matching to support routine metal grade verification and production quality control.

Applications

• Foundry quality control

• Incoming metal inspection

• Alloy grade verification

• Steel and cast-iron analysis

• Non-ferrous metal analysis

• Metal-processing plants

• Die-casting facilities

• Forging plants

• Rolling mills

• Automotive component suppliers

• Metal traders and recyclers

• Metallurgical laboratories

• Contract testing laboratories

How It Works

1. The metal sample is ground or machined to obtain a clean and flat surface.

2. The sample is positioned over the spark stand.

3. High-purity argon flushes the measurement area.

4. The programmable excitation source generates a controlled spark.

5. The excited metal atoms emit element-specific light.

6. The optical system separates the emitted wavelengths.

7. CMOS detectors measure the spectral intensity.

8. The software calculates the elemental composition.

Key Features

Full-Spectrum Measurement

• Measures a broad range of spectral information

• Supports multi-line analysis

• Improves interference correction

• Provides better analytical flexibility than fixed-channel systems

Programmable Excitation Source

• Programmable pulse digital source

• Spark, arc and combined discharge modes

• High-energy pre-spark

• Optimised excitation for different metal bases

Intelligent Spectrum Matching

• Automatically corrects spectral drift

• Uses full-spectrum data for wavelength matching

• Reduces manual adjustment

• Improves long-term stability

UV Analysis Capability

The optical system is designed to support the analysis of important ultraviolet elements such as:

• Carbon

• Phosphorus

• Sulphur

• Nitrogen

Actual capability depends on the selected model configuration and calibration package.

Fast Start-Up

The compact optical system is designed for shorter stabilisation time compared with traditional large optical spectrometers. The presentation indicates readiness in approximately 20 minutes under suitable conditions.

User-Friendly Software

• One-touch operation

• Guided standardisation

• Simplified routine workflow

• Suitable for production and laboratory operators

Typical Technical Specifications

Final specifications must be confirmed against the current EXPEC 4820N datasheet and quotation.

Analyzable Metal Bases

Depending on the installed calibration, the EXPEC 4820N may be configured for:

• Iron base

• Aluminium base

• Copper base

• Zinc base

• Magnesium base

• Nickel base

• Cobalt base

• Titanium base

Only bases included in the final calibration package should be listed as supplied.

Typical Analyzable Elements

Depending on the selected base and calibration:

• C

• Si

• Mn

• P

• S

• Cr

• Ni

• Mo

• Cu

• Al

• Ti

• V

• Nb

• Co

• W

• B

• Mg

• Zn

• Pb

• Sn

• N

Sample Preparation

Correct sample preparation is essential for accurate results.

Steel and Cast Iron

Recommended methods:

• Disc grinding

• Belt grinding

• Milling

Aluminium and Soft Metals

Recommended methods:

• Lathe machining

• Milling

• Dedicated non-ferrous sample preparation

The sample surface should be:

• Flat

• Clean

• Free from oxide

• Free from oil and contamination

• Large enough to cover the spark opening

Optional Accessories

• Small-sample adaptor

• Certified reference materials

• Argon regulator

• Sample-preparation grinder

• Milling machine

• Printer

• External computer

• Data-reporting software

• Spare electrode

• Maintenance kit

Installation Requirements

• High-purity argon supply

• Suitable argon regulator

• Stable electrical supply

• Controlled room environment

• Sample-preparation equipment

• Ventilation or exhaust arrangement

• Certified reference standards

• Stable bench or floor

• Clean installation area

Important Notes

Quantitative Calibration

The instrument can only provide reliable quantitative results for elements and metal bases included in its calibration.

Sample Damage

Spark OES creates a small burn mark on the sample surface.

Argon Quality

Poor argon purity can affect:

• Spark stability

• UV-element analysis

• Detection limits

• Repeatability

• Carbon, phosphorus, sulphur and nitrogen results

Warranty & After-Sales Support

• Warranty according to quotation

• Installation and commissioning

• Operator training

• Method and calibration setup

• Standardisation guidance

• Sample-preparation consultation

• Argon-system setup

• Preventive maintenance

• Spare-part support

• Local technical support in Malaysia

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