The solid front between measuring system and dial and the blow - out back acc . to en837 - 1 s3 are part of the safety features of the ultra high pressure gauges
2.
Due to this alarm contact it is not only possible to achieve an extremely reliable control of pressures in various production equipments or in the energy production , but also these indexing mechanisms directly integrated in the high pressure gauges make the controlling of pressures in almost all conceivable technical facilities possible
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