Hydrogen Probe

Intrusive Hydrogen Monitoring Probe Systems

Hydrogen atoms often produced in acidic environments can permeate through steels and are released as hydrogen molecules which lead to hydrogen induced cracking and hydrogen blistering. Intrusive Hydrogen probes make use of the fact that the released hydrogen gas will lead to pressure build up.

Intrusive hydrogen probes consist of a steel tube exposed to the process and connected to a bleed cross assembly which is equipped with a pressure gauge, thermometer and bleed valve. The thermometer is used to measure the temperature of the hydrogen gas so that volume calculation can be made using temperature and pressure. The bleed valve is for releasing the pressure build-up periodically.

An exposure length of 3" is standard for the intrusive hydrogen probe and the wall thickness is thinner than the pipe wall allowing shorter response time. The intrusive hydrogen probe may be removed and replaced under operating pressure permitting on- line replacement or inspection of the tube.

Please see Axess datasheet or consult an Axess Expert for more information.

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