Oxygen Service

Select Oxygen service measurement products to use in atmosphere which contains high levels of Oxygen or measure gas containing high concentrations of O₂

Oxygen Service is a design feature or production process which is offered on some measurement devices which make it possible to measure pure Oxygen or use in environments containing dangerous concentrations of Oxygen.

Oxygen cleaned sensors & instruments have measurement cells that are dry or filled with a halocarbon oil fill, and can be used in areas where there is a risk that the device will be exposed to high levels of pure Oxygen.

Oxygen cleaned 1000 psi gauge range 4-20mA output pressure sensor - Oxygen cleaned ceramic diaphragm pressure sensor for measuring over a 0 to 1000 psi gauge pressure range and generating a 4 to 20 milliamps output signal.
50 barg oxygen cleaned high temperature 0-5V output pressure sensor - High temperature oxygen cleaned pressure sensor for measuring over a 0-50 bar gauge pressure range and generating a 0 to 5 volts output signal.
Oxygen compatible 400 bar digital pressure gauge with 4 to 20 mA output - Current output digital gauge for pneumatic Oxygen in the range of 0 to 400 bar pressure with 1/4 BSP P male thread connection fitting.
Oxygen use oil and grease free 400 bar digital pressure gauge - 400 bar battery powered compact digital reading pressure gauge for use in oxygen applications.
16 barg range 4-20mA output oxygen pressure sensor for medical gas equipment use - A oxygen service gauge pressure sensor for medical gas equipment use to measure pressure of oxygen over a range of 0 to 16 bar g from the G1/4 male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.
Cleaned oil contamination free 200bar absolute range 0-10V out pressure sensor - Economical corrosion resistant ceramic diaphragm pressure sensor, cleaned for oil contamination free use, for measuring over a 0-200 bar absolute pressure range and generating a 0 to 10 volts output signal.
Oxygen clean 300 psig range 4-20mA output ceramic diaphragm pressure sensor - Oxygen clean ceramic diaphragm pressure sensor for measuring over a 0 to 300 psi gauge pressure range and generating a 4 to 20 milliamps output signal.
150 psi absolute IS 4-20mA oxygen clean pressure transducer for research use - A oxygen clean intrinsically safe absolute pressure transducer for research use to measure pressure of oxygen over a range of 0 to 150 psi abs from the 1/4 NPT male process connection, and sending the corresponding 4-20mA signal through the DIN plug electrical connection.

Oxygen service refers to the specialized handling and preparation of measurement instruments intended for use in environments with high oxygen concentrations, including pure oxygen. This is a critical consideration because oxygen, while essential for life, can react violently with many materials, especially hydrocarbons like grease and oil, creating significant fire and explosion hazards.

Selecting the correct instrumentation for oxygen service is paramount for safety and reliable operation. When selecting instrumentation for oxygen service, several key factors must be considered.

Contents

Material compatibility

Any component that comes into contact with high concentrations of oxygen must be made from materials that are highly resistant to oxidation. This often means using specialized alloys or polymers.

Grease free

The components of the measurement device which will come into contact with Oxygen gas must be free of hydrocarbons, such as grease or oil, which might ignite when mixed with a high purity O₂ gas. This requires specialized cleaning processes, often referred to as “oxygen cleaning,” to remove any traces of grease, oil, or other combustible materials. The level of cleaning is crucial and should align with the specific application requirements, potentially adhering to industry standards like those set by ASTM.

Halocarbon oil fill

If there are any fluid filled components such as a oil fill behind a thin isolation diaphragm, the oil should be of such a type, which will not burn when exposed to an ignition source in an Oxygen environment, e.g. Halocarbon oil.

Oxygen cleaning

The level of cleaning can vary from one measurement device manufacturer to another, and for more stringent requirements it maybe necessary to use a Oxygen cleaning service specialist which has a cleaning process that conforms to the relevant ASTM (American Society for Testing and Materials) standard.

Hazardous area certification

In some applications, the presence of high oxygen concentrations may coincide with a hazardous environment, requiring instrumentation that is certified for use in such areas. These hazardous area approvals, such as intrinsic safety certifications, ensure that the instrument itself does not become an ignition source. Intrinsically safe instruments are designed to limit the electrical and thermal energy in the system, preventing the ignition of flammable gases or vapors. When selecting instrumentation for these combined oxygen service and hazardous area applications, it is crucial to ensure that the instrument carries the appropriate certifications for the specific hazardous zone in which it will be installed. Often, these intrinsically safe instruments are connected via a zener barrier to control and monitoring equipment located in a safe area, further enhancing the safety of the overall system.

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