EMGA-921

Hydrogen Analyzer

The EMGA-921 Hydrogen analyzer is our flagship model for H analysis, designed to provide exceptional user-friendliness and reliable performance. 

With its high accuracy and repeatability, this hydrogen elemental analyzer is perfectly suited for both cutting-edge technology research and development, as well as quality control in various industries such as steel, new materials, catalysts, and more. 

Hydrogen is measured as H2 gas using a thermal conductivity detector, ensuring precise and dependable results.

Segment: Scientific
Manufacturing Company: HORIBA, Ltd.

Principle and Gas flow diagram

The sample is placed in a graphite crucible and the crucible is maintained between the upper and the lower electrode of the impulse furnace.  A high current power passes through the crucible to create a high temperature. 

The Hydrogen in the sample is extracted as Hydrogen gas (H2) and its concentration is determined by a thermal conductivity detector (TCD).

Super High Performance

  • Wide measurement range Hydrogen: Up to 0.02%
    • Optimized TCD design for hydrogen.
  • Precision
    • Hydrogen: SD≦0.04μg/g or RSD≦0.5% whichever is larger (Reference gas)
  • Standard method
    • EMGA-921 fulfills requirements of the standard methods for analysis of various metals(titanium, zirconium, tantalum etc.) JIS Z2614, JIS H1619, JIS H1664, JIS H0696 ASTM E1447

 

Analysis examples of JSS samples containing lowconcentrations of hydrogen.

User-friendly Software

Measurement Window

Simple software allows easy handling.

Extracted gas signals are displayed in real time numerically and also as curves together with temperature level. Graphs are saved automatically.

In the measurement window, sample weight can be registered automatically. Results are saved in a data table for easy management.

 

HORIBA originality-Maintenance navigator

Maintenance counter informs users at the timing of consumables replacement to keep high accuracy means.
And as navigator describes the easy to understand procedure for the replacing parts, operator can do maintenance works with absolutely no experience and technical knowledge.

 

EMGA-921: Hydrogen analyzer

Principle
Hydrogen: Thermal Conductivity detector (TCD)as H2

Measurement range*:
Hydrogen: 0-0.02%
*Possible to increase the range by reducing the sample weight.

Sample weight: 1.0 ± 0.1g

Sensitivity (Minimum reading): Hydrogen: 0.001 ppm.

Accuracy** (Repeatability)
Hydrogen
σn-1≦0.04 ppm or RSD≦0.5% whichever is larger (Reference gas)
** Based on the sample weight 1.0 ± 0.1g and with automation functions described below

Display

  1. Measurement result: LCD or printout
  2. Alarm message: LCD or printout
  3. Flow sheet: LCD

Power of furnace
Inert gas fusion in impulse furnace
Enable to set the generating power 0 – 8.0 kw

Sample introduction: Dual sample/flux introduction mechanism

Automation functions: Auto cleaner, Crucible loader

Integration conditions:
Preset time integration
Integration up to reach comparator level
Preset time integration or integration up to reach comparator level, whichever is shorter

Sample ID: Enter up to 20 one-byte characters

Calibration

  1. One point or multi point calibration (Reference gas or standard samples)
  2. Calibration using previous analysis data
  3. Calibration curve correction function

Functions

  1. Display of real time extraction curve
  2. Analysis interruption
  3. Self diagnosis and alarm display
  4. Analysis of extraction curve (Superposition, difference etc analysis)
  5. Out put (RC-232C or TCP/IP)

Dimensions: 750mm(H)×785mm(D)×653mm(W)
Sample introduction is positioned at 650mm from table.

Weight: 230kg
On carrying, it is divided in two units (Under 140kg/unit)

Computer: PC model operating OS Windows® XP(SP2) and beyond

Power
Main unit: AC200/220/230/240V ± 10%
Auto cleaner: AC100V (Step-down transformer)
Frequency: 50/60 ± 1Hz

Electric power consumption
Main unit: 12kVA (MAX)
Auto cleaner: 1.5kVA (MAX)

Ground resistance: Less than 10Ω

Installation condition
Operation temperature: 5-40°C
Performance temperature: 5-35°C
Humidity: Maximal relative humidity 80%RH between 5-31℃, linearly decrease down to 50%RH between 31-40℃
Vibration: Duplex amplitude 20micron and less than 0.098m/S2 accelerations at frequency band

Required gas
Ar carrier gas: Purity greater than 99.995%, Pressure 0.35MPa
Stainless steel pipe(O.D.3mm) and suitable connecter fitting within 3m of unit
Dry air or N2 as operating gas: Pressure 0.45MPa
Nylon pipe (O.D.6mm) and suitable connecter fitting within 5m of unit

Cooling mechanism: Radiator unit (Separation type)

Electronic balance (Option)
Enable connection with electronic balance with 1-0.01mg minimum display

Optional automatic voltage regulator (AVR)
Capacity:15kVA
Weight: 130kg

Quantitative Analysis of Low-concentration Hydrogen Content in Titanium Alloy
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?
Quality Assurance for the Analysis of Steel by Gas Component Analysis
Quality Assurance for the Analysis of Steel by Gas Component Analysis
Sample Preparation and Sampling Methods for the Gas Analysis of Steel
Sample Preparation and Sampling Methods for the Gas Analysis of Steel
Hydrogen Analysis in steel and metals: Solid Extraction or Fusion
Hydrogen Analysis in steel and metals: Solid Extraction or Fusion
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.
The Hydrogen Analysis of Solid Samples
The Hydrogen Analysis of Solid Samples
Each year the marketplace sees increasing demands for the analysis of hydrogen contained in various sample materials.
Oxygen and Nitrogen determination in Aluminium Nitride
Oxygen and Nitrogen determination in Aluminium Nitride
This application note will show the relevance of the EMGA-920 to measure high level of Nitrogen while maintaining the needed precision for Oxygen determination in AIN.
Oxygen and Nitrogen determination in Boron Nitride
Oxygen and Nitrogen determination in Boron Nitride
This application note will show the relevance of the EMGA-920 to measure high levels of nitrogen while simultaneously determininig low levels of Oxygen with good precision.

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