Parylene Coating Blog by Diamond-MT

Conformal Coatings for Oil & Gas Sensors

Posted by Sean Horn on Fri, May 08, 2020 @ 08:00 AM

Oil & Gas industry makes use of sensors which face extremely high temperature and high pressure (HTHP) environments as in downhole drilling (>200°C and 30 kspi). In US natural gas supply lie in reservoirs below 15,000 ft. Wells at these depths pose environmental challenges of drilling due to the temperature, pressure and gasses. Increasing the lifetime of drilling equipment and possibility for recalibration of sensors that drift at such depths would save millions of dollars if they can be preserved under these HTHP environments. The packaging of sensors is a key element in providing this kind of protection.

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Tags: parylene, conformal coating applications, oil and gas, polyurethane conformal coatings

Polyurethane Conformal Coatings: When to consider an alternative

Posted by Sean Horn on Fri, Feb 07, 2020 @ 09:05 AM

Polyurethanes (Urethane Resin- UR) are polymeric, flexible, insulating, hard and chemically resistant (Acid—Alkali—Salty water) conformal coatings that are used to protect electronic parts from chemical corrosion, oil, moisture, fungus, and static discharges. Polyurethane coatings are supplied as single or two-component formulas. These coatings are suitable for printed circuit board applications such as sensors in the oil and gas industry, automotive, agriculture and common electronics. Polyurethane can be optically excited under UV-light and fluoresces therefore its inspection is also straightforward. Optically transparent coatings with a bit of tint are visually suitable for encapsulation purposes. Maximum service temperature for these conformal coatings (depending on the type) is ˂130 °C.

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Tags: tin whiskers, urethane conformal coating, urethane resin, polyurethane conformal coatings