1, Test differential pressure position 2, Test the working position of s 3, Test the flow position of water 4.IP54 Application1, Test differential pressure position of2, Test the working position of s3, Test the flow position of water chillers.Technical parameterProtection Grade: IP54Storage temperature : -20~80°CEnvironmental Temperature: -20°C~80°CMetering Substances: Oil, Water and Air (If ...