ELEMENTRAC ONH-p2 type oxygen-nitrogen-hydrogen analyzer
ELTRA
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The ELEMENTRAC ONH-p2 type device is a combination of ELTRA ELEMENTRAC ON-p2 and OH-p2 type analyzers, which can be used to determine all three elements.
The analyzer operates in two modes: ON or OH. The operating mode is selected with a single switch. The exchange of the carrier gases (from helium to nitrogen) takes place automatically with the help of solenoid valves.
The performance and features of the device are similar to the following devices: Eltra Elementrac OH-p2 and Eltra Elementrac ON-p2.
Field of application: steel /metallurgy, machine manufacturing/, electronics, ceramics.
Typical samples: alloys, aluminum, ash, carbides, cast iron, ceramics, copper, ferro-alloys, iron, metals, ores, heat-resistant metals, silicon, steel.
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ELTRA analyzers can only be operated together with the external computer!
The location of the filters and chemicals required for the operation of the device is easily accessible, located at the front of the device, which is covered by a door. The closed, pressurized system ensures 100% delivery of the samples to the catalyst.
As an option, the device can be ordered with the "Autocleaner", which prevents deposits from forming on the upper electrode and in the furnace chamber.
Principle of operation:
Rod or granule samples can be placed directly into the device, while powder-based samples can be placed in the device with the help of a capsule, the maximum weight of which is 2 g. Ambient gases are prevented from entering the furnace by purging with the carrier gas. The carrier gas is nitrogen or hydrogen, depending on the type of analysis. The empty graphite crucible placed on the lower electrode is heated by the analyzer, thereby reducing the amount of possible impurities. After stabilization, the sample burns in the graphite crucible, and then the combustion products enter the analyzer through various filter/cleaning materials.
In the copper oxide catalyst, carbon monoxide (CO) is converted to carbon dioxide (CO2). The oxygen content of the sample is measured from the amount of CO2 by the IR measuring cell. After measuring the oxygen content, it chemically removes CO2 and water, and then a thermal conductivity measuring cell determines the amount of nitrogen in the sample.
When determining the hydrogen content, the combustion products of the sample and the nitrogen carrier gas are passed through a Schütze reagent.
Technical data:
| Specifications: | ONH-p2 |
|---|---|
| Measured elements: | hydrogen, nitrogen, oxygen |
| Sample Type: | inorganic |
| Sample holder: | graphite crucible |
| Furnace direction: | vertical |
| Furnace: | electrode pulse furnace, above 3000 °C |
| Measuring principle: | oxygen: IR absorption, nitrogen and hydrogen: heat conduction |
| Typical measurement time: | 120 - 180 seconds |
| Required chemicals: | Schütze reagent, magnesium perchlorate, sodium hydroxide, copper oxide |
| Required gases: | compressed air, helium 99.995% pure, nitrogen 99.995% pure, argon 99.995% pure (if required), all pressures (2 - 4 bar / 30 - 60 psi) |
| Consumption: | 3~ 400 V, 50/60 Hz, max. 8,500W |
| Dimensions (w x h x d): | 560 x 780 x 640 mm |
| Weight: | approx. 165 kg |
| Necessary accessories: | PC, monitor, scale (accurate to 0.0001g) |
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