WIKA pressure, temperature and level measuring instruments can be found worldwide in the field of oil and gas production and regeneration, offshore as well as onshore. Our measuring instruments are manufactured in close cooperation with members of ISO 15156 and NACE committee in accordance with the respective latest revision. Our Bourdon tube and diaphragm pressure gauges have been put to the test in different independent institutions where they have been subject to elaborate laboratory tests as regards different sour gas concentrations related to temperature and time.