Questions regarding pressure gauges, protection ratings, silicone oil, and pressure relief vents
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I recently selected a few pressure gauges and discussed the details with the manufacturer. Please take a look: 1. If a safety pressure relief device with pressure release holes is chosen, the protection rating can only be IP54; it cannot reach IP65. 2. If it is a shock-resistant pressure gauge filled with silicone oil, then it cannot have pressure release holes. Based on these two issues, is it this company that cannot do it, or are all those that make pressure gauges unable to do it? I’m not sure if WIKA can do it; I’ve heard that WIKA is considered the best in the industry, but also the most expensive
Ask a few more manufacturers; it should be available
WIKA isn’t necessarily the best in the industry either; there are many imported brands available. You might want to check out domestic brands such as Tiankang, Bulaidi, and Shangyi – they are all relatively large manufacturers, so they won’t impose such strict restrictions.