EMGA-Expert (EMGA-21E) Hydrogen Analyzer EMGA Series</br>(Flagship High-Accuracy Model)

Hydrogen Analyzer EMGA Series
(Flagship High-Accuracy Model)

EMGA-Expert (EMGA-21E) specializes in ultra-trace hydrogen analysis below 1.0 ppm, equipped with a high-sensitivity TCD (thermal conductivity detector) and HORIBA’ s proprietary gas separation column for R&D and quality control of iron and steel, nonferrous metals, and ceramics.

Hydrogen is a critical element in material development and quality control, as even extremely small amounts can cause defects in materials. However, analyzers capable of detecting hydrogen at the 0.1 ppm level remain limited. The “Inert Gas Fusion – Thermal Conductivity Detection” method has proven to be a highly effective technique for such ultra-trace analysis. HORIBA has over 40 years of experience in developing analyzers based on this method, and has built proprietary technologies such as an impulse furnace for sample heating and melting, a high-sensitivity thermal conductivity detector (TCD), gas separation technology, and advanced control systems. The EMGA-Expert Hydrogen Dedicated Analyzer (EMGA-21E) is an ultra-trace hydrogen analyzer that delivers high-precision analysis along with excellent usability, simple maintenance, and low running costs.

Typical Applications:
- Steel and non-ferrous alloy (metallurgy): Iron, titanium, zirconium, tantalum, copper, nickel, aluminum, zinc, and tungsten carbide
- Semiconductor: Silicon
- Other: Carbon black

The Gas Flow

In the measurement method of EMGA-Expert Hydrogen Analyzer, a sample placed in a crucible is subjected to electrical heating to melt and gasify the elements present in the sample. Argon (Ar), an inert gas, is used as a carrier gas to transport the gasified elements to the TCD detector which ensures exceptional analytical accuracy and stability of the contained elements and their concentration in the gas.

Enlarge gas flow diagram

Improved Maintainability

Reduces maintenance work hours and frequency with new mechanisms for replacing consumables

■ Dust filter* _{*Patent-pending}

With its new mechanism for replacing the dust filter, the operator only needs to replace the thin filter inside the filter holder.This has also reduced the filter replacement frequency to one-fifth (replacement is required approximately every 250 uses).

■ Replacement of electrodes and reagent tube

The integrated upper electrode and reagent tube are easy to remove for easy maintenance.

Reduced Costs

Significantly reduces carrier gas* consumption by 25%, compared to consumption of conventional models _{*Inert gas that transports the extracted gas from the sample to the detector}

Customer Feedback “Reduced carrier gas consumption reduces the man-hours required to replace gas cylinders.”
(The effectiveness may vary depending on measurement conditions, analysis frequency, and standby time.)

Enhanced Usability

3 navigation functions enhance analyses

Maintenance Navigation

Provides navigation for maintenance tasks, procedures, and methods.

Troubleshooting Navigation

Provides navigation for the optimal recovery method with image-based explanations from alarm display to equipment recovery.

Analysis Navigation

Provides step-by-step support for all users, guiding them through the operating procedures and conditions.

The EMGA Pro/Expert Series has its original operation software* which prioritized ease of use, specifically in navigation functions.
*The user interface and functionalities of the software for this system are the same with those of EMIA/EMGA series

Automation Options

We provide three optional automation units for streamlining your operation for the EMGA Series:
- Crucible Loader: Precise capture and positioning of crucibles by rotary mechanism. Maximum stock: 100 pcs.
- Auto Sampler: Samples and fluxes are automatically loaded (Up to 22).
- Auto Cleaner: Two rotating brushes clean the upper and lower electrodes after each measurement.

Please refer the Automation Options and other optional units for the EMIA/EMGA Pro/Expert Series Elemental Analyzers for the details.

Measurement target element	Hydrogen
Measurement gas type	H₂
Detector	TCD
Measurement range* *Up to 100% wt is possible by decreasing the sample weight	0.04 ppm-0.02%
Precision / Repeatability	σn-1-≦0.04 ppm or CV≦0.5%（GAS）
Sample weight	1.0 g* *Possible to decrease.
Cycle time* *From the start of measurement to auto-cleaning and crucible supply.	Approx. 280 sec (According to our standard conditions)
Required gas	Carrier gas Ar: Purity greater than 99.995%, Pressure 0.35 MPa (Stainless steel tube O.D.3 mm and suitable connector fitting within 3 m from the unit) Operation gas Dry air or N₂ as operating gas: Pressure 0.45 MPa (Nylon pipe O.D.Connection of φ6/4 mm nylon pipe within 5 meters of the main unit).
Dimensions* *Dimensions exclude pipework and other protrusions.	655 x 710 x 725 mm [W x H x D]
Weight	Main unit: 197 kg (Furnace unit: approx.127 kg / Measurement unit: approx.70 kg) Cleaner unit: approx. 28 kg / Radiator unit: approx. 33 kg
Power	Main unit: AC 200/220/230 ±10% 50/60 ±1 Hz 12 kVA (MAX) Vacuum cleaner: AC 100V (Step-down transformer included) 50/60 ±1 Hz 1.5 kVA (MAX)

Optional Units for Multiple Applications

Gas conversion unit (C-50)

This unit converts the generated sample gas into a measurable gas (CO, N₂, H₂) using a gas reduction method.

Capsule press machine (FP-30)

The press machine for encapsulating powder samples ensures stable encapsulation without relying on operator skill.

Auto sampler

The press machine for encapsulating powder samples ensures stable encapsulation without relying on operator skill.

Halogen trap unit (HT-30)

The unit enables efficient gas conversion with additional reagents, depending on the sample.

Opening safety cover

The safety cover unit with interlock function ensures operator safety.

Additional detector unit for O / N*

Sharing the extraction unit enables high-precision oxygen and nitrogen analysis, as well as ultra-trace hydrogen analysis.
*Please contact us for details.

Quantitative Analysis of Low-concentration Hydrogen Content in Titanium Alloy

Can we perform quantitative analysis of hydrogen in a titanium alloy to prevent hydrogen embrittlement?

EMGA has been designed for accurate measurements of hydrogen content in different sample types such as ferrous metals, non-ferrous metals, semiconductors or electronic materials. The hydrogen content is extracted by fusion of the sample in inert gas and analyzed by a high sensitivity thermal conductivity detector. It is also possible to avoid fusion and extract hydrogen content in the sample by heating below the melting point. The purpose of this note is to explain when to use fusion or solid extraction, the benefits, the applications and samples.