Oxygen/Nitrogen/Hydrogen Analyzer (1O+2N+2H) – QT-ONH-3000

Oxygen/Nitrogen/Hydrogen Analyzer (1O+2N+2H) – QT-ONH-3000

Test Application
Spectroscopy Instruments

Best Application: Metal Testing

Applications

Oxygen, nitrogen and hydrogen strongly influence the properties of metals (like steel, titanium, copper) which makes a reliable and precise measurement of these elements an important part of the quality control process.

QT-ONH-3000 Oxygen/Nitrogen/Hydrogen Analyzer is a new and advanced product. It is used for oxygen, nitrogen and hydrogen determination in ferrous and non-ferrous metals, rare earth materials, alloy, and some other inorganic.

Working Principle

Pulse heating inert gas fusion method

  • (Oxygen): NDIR (Non Dispersive Infrared absorption);
  • N/H (Nitrogen/Hydrogen): TCD (Thermal Conductivity Detection).
Features/Advantages

The electrode impulse furnace applies a high current up to 1000A to a graphite crucible and heats it to maximum 3000°C. Itself is water cooled to avoid a overheating. The loading mechanism allows the sample introduction into the crucible without interference from Oxygen and Nitrogen out of the air.

Detection system

Solid state Infrared detector is used for Oxygen. Thermo-conductivity detector is used for Nitrogen & Hydrogen.

Infrared Cells

Two IR cells are installed in the analyzer. The length of each cell can be customized according to the content of samples.

Detector

Solid-state pyroelectric detector made in Germany.

Motor

Synchronous motor made in Swiss.

Source

Anti-oxide, stable IR emitter made in US.

Temperature control

Keep constant temperature in the whole infrared unit to make sure the temperature of detected gas to be stable and the results to be accurate.

Protecting gas

Infrared emitter and the detector are separated from the ambient by nitrogen, which can improve the stability and the accuracy.

Thermo-conductivity (TCD) detecting unit

Anti-oxide NTC thermistor

Signal processing

Small current control technique is developed to make sure the thermistors can be used without carrier gas.

 

Reference gas circuit

Low flow control technique is used.

 

Technical Specifications

Range

Oxygen

Low Oxygen: 0.0001% - 0.5%; High Oxygen: 0.5% - 20%

Nitrogen

Low Nitrogen: 0.0001% - 0.5%; High Nitrogen: 0.5% - 50%

Hydrogen

Low Hydrogen: 0.1ppm~50ppm; High Hydrogen: 20ppm~1000ppm

Sensitivity

Oxygen ,Nitrogen and Hydrogen: 0.01ppm

Repeatability

Oxygen and Nitrogen: 1ppm or 1%; Hydrogen: 0.2ppm or 2%

Sample mass

1g (Sample mass can be changed according to the content)

Analysis time

about 3 min

Carrier gas

High purity helium for O/N, high purity nitrogen for H

Pneumatic gas

Nitrogen or compressed air

Structure

Modular Structure, including analyzer, computer, electronic balance*, printer*, water circulate chillers*.

Note: * is optional.

Gas flow control

High sensitive and accurate electric flow control technique based on the low pressure

difference is applied, and Anti-Overshoot System is applied

Pulse heating electrode furnace

Power: Max.7.5KVA, Temperature: Max.3000°C

Calibration

1) Fast calibration

2) Normal calibration

Power

220VAC 10%, 50/60Hz, current max. 50A (Max.10KW)

Size

Host

W × h × D: 55cm × 65cm × 65cm

Auxiliary machine

W × h × D: 45cm × 65cm × 65cm

Weight

180kg

Typical data: Content: O : 88ppm; N: 32ppm; H5.8ppm

Sample No.

O content

N content

H content

1

0.00878

0.00315

0.000591

2

0.00882

0.00319

0.000577

3

0.00865

0.00321

0.000592

4

0.00870

0.00316

0.000580

5

0.00900

0.00312

0.000558
 

Contact Us

1-877-884-8378