ELEMENTRAC ON-p Oxygen Nitrogen Analyzer

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Product Summary

The ELEMENTRAC ON-p determines oxygen and nitrogen in inorganic samples by inert gas fusion in an impulse furnace with temperatures in excess of 3,000 °C.

The ELEMENTRAC ON-p guarantees precise and fast sample analysis. The analyzer covers a wide range of applications such as metal, ceramics and other inorganic materials.


Product Videos

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ELEMENTRAC ONH-p Overview (5:00)
Watch a brief overview of the equipment and software for the ELEMENTRAC ONH-p Oxygen/Nitrogen/Hydrogen Elemental Analyzer
ELEMENTRAC ONH-p Overview by Eltra (5:45)
Dr. Andreas Theisen of Eltra provides a thorough walkthrough of the features on the new ELEMENTRAC ONH-p.
Eltra Product Overview (7:18)
Learn about the complete Eltra elemental analyzer product line in this video


The ELEMENTRAC ON-p can be supplied with up to two infrared cells with different path lengths, accommodating both high and low level oxygen analysis. Nitrogen concentrations are determined in the ELEMENTRAC ON-p by a robust and sensitive thermal conductivity cell.

Product Advantages

  • simultaneous nitrogen and oxygen determination with inert gas fusion technique
  • Closed gas management and optimized gas circulation for sensitive ON determination
  • Use of cost efficient argon as carrier gas possible
  • Powerful catalyst furnace for precise oxygen measurement
  • Gas flow system with electronic gas flow control and new leakage test
  • Water-cooled sample port system for effective removal of atmospheric gases
  • Flexible configurations and measuring ranges for O and N
  • High sensitivity IR and TC cells with low detection limits
  • Short analysis time
  • Powerful 8,5 kW impulse furnace for temperatures in excess of 3,000 °C (limited to 6.8 kW in application setting)
  • Chemicals and tubes are hidden behind a door (removable)
  • Powerful software supporting data and application export, with comment fields
  • Single and multipoint calibration (linear regression)
  • Cooling via tap water, heat exchanger or chiller
  • New design allows operation in production control and laboratory


  • Alloys
  • Cast iron
  • Ceramics
  • Copper
  • Refractory metals
  • Steel
Measured elements:
nitrogen, oxygen
Furnace alignment:
Sample carrier:
graphite crucibles
Field of application:
ceramics, engineering / electronics, steel / metallurgy
electrode impulse furnace (max. 8,5 kW), temperatures in excess of 3,000 °C (limited to 6.8 kW in application settings)
Detection method:
solid state infrared absorption for oxygen thermal conductivity for nitrogen
Typical analysis time:
120 - 180 s
Chemicals required:
copper oxide, magnesium perchlorate, sodium hydroxide
Gas required:
compressed air, helium 99.995 % pure, argon 99.995% pure (if required), all gases with (2 - 4 bar / 30 - 60 psi)
Power requirements:
3~ 400 V, 50/60 Hz, max. 8,500 W
Dimensions (WxHxD):
57 x 77 x 63 cm
~ 161 kg
Required equipment:
balance (resolution 0.0001g), monitor, PC
Optional accessories:
carrier gas purification, external chiller, gas calibration unit

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Main Unit