Tag Archives: All Sensors

Pressure – A Class Act

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Pressure – A Class Act

That’s right. For the piping industry, the American National Standards Institute (ANSI) developed Pressure Classes (or ratings) for different types of flanges used in industrial applications.

According to ASME B16.5, forged steel flanges are made in seven primary Pressure Classes: Class 150, 300, 400, 600, 900, 1500 and 2500. More recently called “ANSI class,” the designation for the pressure-temperature rating of a pipe flange  is a dimensionless number. Because it is constructed with more metal, a Class 300 flange can handle more pressure than a Class 150 flange. However, a Class 150 flange is rated to approximately 270 PSIG at ambient conditions, 180 PSIG at approximately 400°F, 150 PSIG at approximately 600°F, and 75 PSIG at approximately 800°F.

American National Standards Institute

Image courtesy of the American National Standards Institute.

Determining or verifying the pressure rating or monitoring the pressure in an application could be accomplished with an appropriately rated All Sensors SPA 402 Series of stainless steel, media-isolated pressure sensors.

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Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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Pressure and the Polar Vortex

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Pressure and the Polar Vortex

It’s baaack. It has been 4 years since a polar vortex disruption brought artic weather to the Northern Hemisphere. In the 2014-2015 winter, it meant historically cold temperatures and high snowfall in many areas.

While a polar vortex (a large area of low pressure and cold air that surrounds both of the Earth’s poles) always exits, other weather conditions can disrupt it and cause its effect to spread. Normally, the counter-clockwise (vortex) airflow keeps the colder air near the pole. The disruption is detected by pressure measurements in the stratosphere – not a ground level. While, a variety of pressure levels are used to mark its position, the 50 mb pressure surface is most often used to identify its location.

Weather.gov - Polar Vortex

Source: https://www.weather.gov/safety/cold-polar-vortex

Comments/Questions?
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
Email us at info@allsensors.com

Fan Static Pressure

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Fan Static Pressure

Fan static pressure is one of the two parameters that define the performance of a fan. The other, and more common, is the volume of air the fan delivers per minute or per hour. Fan static pressure is the resistance pressure the fan has to blow against to move air in the desired direction.

For PC gamers, high airflow and high-pressure static fans are two distinct classifications. High-pressure static fans are used on radiators, central processing unit (CPU) and graphic processing unit GPU coolers, in front of hard drives, and other places where airflow might otherwise be blocked by an object. Because of their high-pressure capability, they can overcome the restrictions caused by the blockage.

Cooler Master Masterfan Pro 120 Air Pressure Fan

The Masterfan Pro 120 Air Pressure Fan is ideal for funneling concentrated air short distances at hot components or through tight spaces.  Image courtesy of Cooler Master.

In wood drying operations, kiln static pressure is not a constant and depends upon the performance of the fan chosen. For example, replacing a small fan generating 45,000 cubic feet per minute (cfm) at an estimated pressure of 0.5 inches H2O in a kiln with a larger fan rated at 60,000 cfm at 0.5 inches of H2O will not achieve 60,000 cfm. The actual air flow will be less than 60,000 cfm due to the rise in the static pressure – a situation that can cause complications in the end application.

In heating, ventilating and air conditioning (HVAC) systems, static pressure measures the effectiveness of the fan to the ducts in a particular installation.  If the static pressure is too high, the HVAC unit will have to work harder to push the air through the duct work.

In all of these low-pressure situations, an accurate microelectromechanical systems (MEMS) pressure sensor with a digital output, such as All Sensors DLLR Series, can address the manufacturing, installation verification or ongoing operation measurements.

Comments/Questions?
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
Email us at info@allsensors.com

Low Pressure for Consistency and Safety

Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.

Low Pressure for Consistency and Safety

A liquid propane (LP) powered portable heater can make an enclosed space tolerable and even comfortable when the outdoor temperatures are low. Many systems use pressures in the range of 10 to 20 psi. However, these pressures can reduce the unit’s BTU output as the temperature drops. In contrast, a low-pressure portable heater system such as Dyna-Glo’s Delux 60,000-BTU Portable Forced Air Propane Heater can consistently achieve maximum BTU outputs, even in extremely cold environments. Operating at only 0.5 psi, the unit is also safer. Since the operating pressure is determined by design and not measured during operation, it does not have a pressure sensor. However, in the design verification or quality control processes, a pressure sensor such as All Sensors SPM 401 Series media isolated sensor could be used by manufacturers that make low pressure heaters as well as those that make high pressure heaters.

Dyna-Glo's Delux 60,000-BTU Portable Forced Air Propane Heater

Image courtesy of GHP Group, Inc.

Comments/Questions?
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
Email us at info@allsensors.com