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    Gas Mixer Switch-Over

    Increasing availability through gas mixer switching

    If two gas mixers are available, they can be automatically switched-over (e.g. on a adjustable weekly time-slice) to ensure a uniform load and the functionality of both gas mixers at the same time. This is easily possible with the gas mixer switchover from LT GASETECHNIK.

    If a gas mixer has a fault or is in maintenance, the second gas mixer can take over completely. For particularly high demands, both gas mixers can work at the same time. For this purpose, both gas mixers are operated in parallel via additional pressure signals, if the gas mixture requirement is temporarily increased.

    If the regular gas supply is disrupted, the system switches to an emergency supply (bottle or bundle station) with ready-to-use mixture.

    Interested?

    Feel free to ask us or request your quotation.

    Special safety in gas supply

    Additionally, a redundant analysis system with double analysis, i.e. with two independent measuring cells, is installed. Two NDIR sensors continuously determine the CO2 concentration in the Ar/CO2 gas mixture. Each measuring cell is responsible for one gas mixer, thus an independent redundancy is ensured. The analysis results are displayed on the color display, integrated in the control unit. The gas analysis is monitored by means of solenoid valves with the measuring gas of the corresponding gas mixers and also has an automatic zero point and end point calibration.

    During the switchover, the circumstance of a fault or of the automatic calibration is taken into account with priority circuit.

    Switchover and gas analysis are controlled via a common PLC with touchscreen display. The display shows the operating state of the gas mixer one or two. For a quick overview, two indicators also show the currently activated gas mixer.

    Messages such as

    • Operating condition Mixer 1/2
    • Failure mixer 1/2
    • Limit values
    • Analysis actual value mixer 1 and 2 of the continuous measurement as analog signal

    are transmitted to the central control room via a cable connection.

    When switching over, the circumstance of a fault or automatic calibration with priority circuit is taken into account.
    The analysis values are logged in the controller and can be read out as a CSV file via a USB slot on the front of the housing and processed with common software tools.

    Design according to your requirements

    This ensures the necessary special safety in mixed gas supply and continuous gas mixture analysis to meet the highest quality requirements.

    Contact us for your individual solution of a gas mixer switch-over.

    Blog posts on the topic

    Industry of Things
    IoT in the gas mixing technology
    878 494 Alexander Hanf

    Remote-controlled gas mixers with their own homepage, mail service and with connection to a higher-level control system make the gas mixing technology Industry of Things (IoT) suitable. LT GASETECHNIK has…

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    Gas mixer switch-over
    Double redundancy through gas mixer switching with double gas analysis and backup system
    878 494 Alexander Hanf

    A German automobile manufacturer demands special security when it comes to the supply with welding gas. A redundant supply conceptwith two LT gas mixers and a back-up bundle supply is…

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    Do you have a question
    or would you like to receive an individual quotation?
    Please contact us.








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