An oxygen analyser is used to measure oxygen in gases. The analysers are designed to increase efficiency, optimize processes and increase safety. Inventech supplies oxygen analysers with various measurement techniques. We have a suitable solution for every application. We only supply high-quality oxygen analysers for gas analysis of the Teledyne Instruments brand because of the excellent reliability, robustness and long life of the analysers.
Inventech offers extractive oxygen analysers (in-situ, wall or panel solutions) as well as portable analysers. Online measurement is crucial for determining and monitoring the purity of a gas. A portable oxygen analyser again provides the speed and flexibility needed to analyse your process. In addition to being portable or online, the O₂ analysers can be classified by range and technology used: paramagnetic, electrochemical, zirconium oxide and TDLAS. Below we will tell you more about these techniques. Would you like to know more about Teledyne Analytical Instruments oxygen analysers? Please contact Inventech. We can also provide references on request.
There are several measuring principles:
Electrochemical
Teledyne has developed and perfected the use of electrochemical oxygen sensors for a wide variety of applications. TAI has developed the Micro-Fuel Cell, which works like a transducer; it converts energy from one form into another form. A well-known transducer is the battery that converts chemical energy into electrical energy. The Micro-Fuell Cell works the same way; the amount of oxygen in the gas is reduced by an electrolysis reaction and measured by electrical current. The analyser automatically corrects for changes in temperature (at a constant oxygen level). Periodic cell replacement is required. However, the Insta Trace, another Teledyne innovation, eliminates the inconvenience associated with replacing an electrochemical oxygen sensor. Analysers according to the electrochemical principle are suitable for oxygen concentrations between 1 ppm and 25%.
Paramagnetic
The physical property that distinguishes oxygen from other techniques is paramagnetism. Due to these properties, oxygen molecules are attracted by a strong magnetic field. This data is used by the paramagnetic detection technique. Because the gas sample is guided along a magnetic field, a voltage change occurs when the gas contains oxygen. This in turn generates a current (pje) that returns an element of the analyser to its original position. The current required to maintain the original position is proportional to the oxygen concentration. Paramagnetic analysers are very suitable for measurements of oxygen levels between 90 and 100%.
Thermal conductivity
Two thermistors are used for thermal conductivity; one for the sample gas and one for the reference gas. Because the two thermistors are located close to the walls of the sample chamber and are heated, they lose heat to the walls of the sample chamber at a rate that is proportional to the thermal conductivity of the surrounding gas. The temperature difference and the bridge voltage (Wheatstone) are converted in proportion to the concentration of one of the components of the gas mixture.
Zirconium oxide sensor
The zirconia sensor is heated to 700 ° C. When the sample contacts the electrode of the sensor, it generates an electrical signal. This signal is proportional to the ratio between the oxygen concentration in the sample gas and the oxygen concentration in a reference gas. The reference gas in this case is the ambient air that is in contact with the electrode on the outside.
Typical applications of oxygen analysers are:
The application and use differ per customer situation. Inventech is a specialist in oxygen analysis in gases and is happy to help.
Important things when choosing an oxygen analyzer include:
Ask our expert in oxygen anlysis in gases about the benefits of the different solutions for your application.
There are many types of oxygen analyzers for various measurements in gases. Below we highlight a number of oxygen analysers.
The Insta Trans is an inline oxygen analyzer (transmitter) packaged in a weatherproof NEMA 4 housing. The name Insta Trans refers to the built-in flexibility level. The instrument can be used for ppm or percent measurements, allowing users to deploy the Insta Trans for a variety of applications. The Insta Trans can also use an Insta Trace which reduces the “waiting time” when replacing a cell to 15 minutes (instead of 12 to 24 hours, which is usual when replacing a cell).
Applications Insta Trans:
The Oxygen Analyzers 3190 (Traces) and 3290 (Percent) are easy-to-use microprocessor based units, offering high accuracy and all standard features. The 3190 and 3290 are electrochemical oxygen sensors designed to detect oxygen concentrations or percentage levels in clean gases. The instruments are available in portable, 19 ”rack and wall / panel mounting.
Most important features:
Applications 3190 and 3290:
Download the brochure of the 3190 and 3290 series here. Depending on the practical application, desired accuracy and the gas (mixture) to be measured, Inventech can make a suitable proposal for you.
In 2020 Teledyne has introduced a new generation of oxygen analyzers; the 3000-RS series. The analyzers are designed to increase efficiency, optimize processes and increase safety. The 3000-RS series uses the well-known Teledyne micro fuel cell technology, the paramagnetic analysis technique and the patented InstaTrace. The compact design of the 3000-RS series allows optimal use of rack space; 4 analyzers can fit in a 19 ”rack.
Most important features:
Applications: Similar to 3190 and 3290. Download the brochure of the compact 3000-RS series.
The oxygen analyzer 3110 works on the same principle as the Insta Trans and the 3000RS, but combined in one model and as a portable application. This analyzer is easy to operate and calibrate; the correct scale is automatically selected and data is logged via a digital output. The 3110 is also supplied as standard in a robust carrying case.
Applications oxygen analyser 3110:
The above analysers are just a selection from our range. If you would like to know which analyser is suitable for your application, please contact our specialist in oxygen analysis John Heidenreich, via tel.: 0031 (0)162-460404 or email. We are happy to help.
Find the right oxygen analyzer for your application. Tell us about your application and we will find the best solution for your company.
