EXPEC 4850F / 4850N – Spark Optical Emission Spectrometer

Brand: EXPEC
Series: EXPEC 4850
Available Configurations: EXPEC 4850F and EXPEC 4850N
Product Type: Spark Optical Emission Spectrometer

Applications

• Ferrous foundries

• Non-ferrous foundries

• Steel and cast-iron production

• Aluminium-alloy production

• Copper-alloy production

• Die-casting plants

• Forging facilities

• Rolling mills

• Metal machining and processing

• Automotive-component manufacturing

• Aerospace-component production

• Shipbuilding

• Incoming raw-material inspection

• Metal grade verification

• Scrap-metal sorting and recycling

• Premium metal trading

• Metallurgical laboratories

• Third-party testing laboratories

Typical Metal Bases

Depending on the installed calibration package, the EXPEC 4850 may be configured for selected metal bases such as:

• Iron

• Aluminium

• Copper

• Zinc

• Magnesium

• Nickel

• Cobalt

• Titanium

Only the metal bases confirmed in the final quotation should be listed as included.

Typical Analyzable Elements

Depending on the selected metal base and calibration:

• Carbon

• Silicon

• Manganese

• Phosphorus

• Sulphur

• Chromium

• Nickel

• Molybdenum

• Copper

• Aluminium

• Titanium

• Vanadium

• Niobium

• Cobalt

• Tungsten

• Boron

• Magnesium

• Zinc

• Lead

• Tin

• Nitrogen

• Other alloying and trace elements

How Spark OES Works

1. The metal sample is ground, milled or machined to produce a clean and flat surface.

2. The sample is placed over the spark stand.

3. High-purity argon flushes the excitation chamber.

4. The programmable excitation source generates a controlled electrical spark.

5. Atoms in the sample emit element-specific wavelengths.

6. The optical system separates the emitted light.

7. Multi-CMOS detectors measure the spectral intensity.

8. The software calculates the elemental concentrations using the installed calibration.

Key Features

Full-Spectrum Measurement

The EXPEC 4850 captures a broad range of spectral information rather than relying only on a limited number of fixed analytical channels.

Benefits include:

• More spectral information

• Multi-line elemental analysis

• Improved interference correction

• Wider analytical range

• Better calibration flexibility

• Improved expansion capability

Dual Optical System

The EXPEC 4850 uses optical systems optimised for different wavelength regions.

Visible Optics

• Paschen–Runge optical design

• Full-wavelength measurement

• Multi-CMOS detector arrangement

• High spectral resolution

Ultraviolet Optics

• Optimised for critical ultraviolet elements

• Suitable for C, P, S and N analysis

• Compact optical chamber

• Improved purity and signal-to-noise performance

• High-groove-density grating

The presentation highlights the dual-optics design as an important feature for improving the analysis of carbon, phosphorus, sulphur and nitrogen.

Wide Wavelength Coverage

Programmable Digital Excitation Source

• Programmable pulse digital source

• Spark-discharge mode

• Arc-discharge mode

• Combined discharge waveform

• High-energy pre-spark

• Excitation protection

• Optimised waveform for different alloy bases

Intelligent Spectrum Matching

The instrument software uses full-spectrum information to automatically match and correct the measured spectrum.

Benefits include:

• Automatic spectral-drift correction

• Reduced manual adjustment

• Better wavelength alignment

• Improved long-term stability

• More consistent routine measurements

Multi-Line Analysis

Different spectral lines can be used for the same element depending on concentration.

This supports:

• Low-level trace analysis

• High-concentration alloy measurement

• Reduced self-absorption effects

• Improved analytical accuracy

• Broader measurement range
   

Rapid Analysis

The presentation cites an example of approximately 20 seconds for the analysis of an Al 6063 alloy sample under the relevant method. Actual measurement time depends on the alloy base, preparation, pre-spark duration and analytical program.

Short Preparation and Start-Up Time

The compact optical chamber and argon-purification design allow faster stabilisation than conventional large optical spectrometers.

The presentation states that the system can be ready for use in approximately 20 minutes, while traditional large optical and vacuum systems may take several hours.

Temperature Stability

• Controlled optical temperature

• Internal temperature fluctuation stated below approximately 0.2°C

• Reduced effect from ambient-temperature changes

• Supports stable analytical performance

Anti-Vibration Performance

The EXPEC 4850 is designed to maintain performance during normal transportation and industrial use, including exposure to:

• Random vibration

• Impact

• Transportation shock

• Normal installation movement

User-Friendly Software

• One-touch routine operation

• Guided standardisation

• Simplified analysis workflow

• Suitable for laboratory and production operators

• Integrated result processing and reporting

Typical Technical Specifications

The presentation compares the EXPEC 4850 with traditional spectrometers and states approximate dimensions of 0.7 × 0.6 × 0.4 m, a weight of approximately 80 kg and power consumption of approximately 0.4 kW.

Why High-Purity Argon Is Required

High-purity argon is required to create a stable excitation environment.

Its benefits include:

• Chemically inert atmosphere
• Minimal reaction with metal vapour
• Relatively simple emission spectrum
• Reduced spectral interference
• Lower spectral background
• Improved ultraviolet transmission
• Better analysis of C, P, S and N

The presentation specifies high-purity argon and identifies important ultraviolet wavelengths for phosphorus, sulphur, carbon and nitrogen.

Small-Sample Adaptor

An optional small-sample adaptor can be used for:

• Small components

• Irregularly shaped samples

• Narrow pieces

• Samples that cannot fully cover the standard spark opening

• Special production components

The adaptor helps position the sample safely and reduces the risk of argon leakage around the spark opening.

Sample Preparation

Correct sample preparation is essential for reliable Spark OES results.

Steel and Cast Iron

Typical preparation methods:

• Disc grinding

• Belt grinding

• Milling

Aluminium and Soft Non-Ferrous Metals

Typical preparation methods:

• Lathe machining

• Milling

• Dedicated non-ferrous sample preparation

Preparation Requirements

The sample surface should be:

• Flat

• Clean

• Dry

• Free from oxide

• Free from oil

• Free from grinding contamination

• Large enough to cover the spark opening

Separate grinding media should be used for different alloy groups to reduce cross-contamination.

Typical Workflow

1. Confirm the required metal base.

2. Select the correct analytical program.

3. Prepare the sample surface.

4. Check argon supply and pressure.

5. Place the sample on the spark stand.

6. Start the measurement.

7. Review elemental concentrations.

8. Compare results with alloy specifications.

9. Save or print the report.

10. Clean the spark stand when required.

Standardisation and Quality Control

Reliable performance depends on:

1. Certified reference materials

2. Type-standard samples

3. Regular standardisation

4. Correct argon purity

5. Stable argon pressure

6. Clean spark stand

7. Correct electrode condition

8. Consistent sample preparation

9. Controlled installation environment

1. Daily verification

2. Drift correction

3. Standardisation

4. Certified reference-material checks

5. Spark-stand cleaning

6. Electrode inspection

7. Argon leak inspection

Installation Requirements

The customer should prepare:

• Stable installation bench or floor

• Suitable electrical supply

• High-purity argon cylinder or supply line

• Argon regulator

• Exhaust or ventilation arrangement

• Controlled laboratory environment

• Sample-preparation machine

• Certified reference materials

• Computer or network connection where required

• Adequate maintenance clearance

Important Application Notes

Calibration Scope

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

Solid Metal Samples

Spark OES is principally designed for solid, electrically conductive metals.

It is generally not intended for direct analysis of:

• Liquids

• Plastics

• Ceramics

• Non-conductive materials

• Loose powders without suitable sample conversion

Burn Mark

The spark process creates a small burn mark on the sample surface. The method is therefore minimally destructive.

Environmental Conditions

For best repeatability, install the instrument in a stable environment away from:

• Strong vibration

• Excessive dust

• Rapid temperature fluctuations

• Corrosive fumes

• Direct sunlight

• Unstable power supply

Optional Accessories

• Small-sample adaptor

• Certified reference materials

• Argon regulator

• Sample-preparation grinder

• Milling machine

• Lathe or cutter

• Spare electrode

• Spark-stand cleaning tools

• Printer

• External computer

• Data-management software

• Uninterruptible power supply

• Maintenance kit

Warranty & After-Sales Support

• Warranty according to the confirmed quotation

• Installation and commissioning

• Operator training

• Application training

• Calibration setup

• Standardisation guidance

• Sample-preparation consultation

• Argon-system setup

• Preventive-maintenance support

• Software assistance

• Spare-parts coordination

• Local technical support in Malaysia

Enquiry Information Required

Please provide:

• Required metal bases

• Alloy grades to be tested

• Target elements

• Expected concentration ranges

• Required detection limits

• Number of samples per day

• Sample dimensions

• Sample shape

• Existing sample-preparation method

• Available argon supply

• Required reporting format

• Current certified reference materials

• Laboratory or production-floor installation