Under 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.

Under Pressure

“Pressure, pushing down on me, pressing down on you.” Queen & David Bowie

Great song and, perhaps, a fitting summary for 2020. Adios, 2020! However, pressure, or more appropriately, the stress due to many traumatic moments of daily life, gets a bad rap, since we actually rely on pressure for a variety of life-enabling, life-sustaining and life-enhancing functions. Several of these have been addressed in previous “Put the Pressure on US” blogs. See: “The Pressures of Daily Life on Earth” and “The Pressures of a Modern Lifestyle” for more examples of pressures experienced every day.

Freddie Mercury and David Bowie sing Under Pressure

Freddie Mercury and David Bowie sing Under Pressure.
Source: YouTube.

To deal with the very real pressures of daily living, you need a wide variety of pressure sensors to measure, monitor and control air and a variety of gases, water and a variety of other liquids as well as numerous human body pressures. From low (<5 cmH2O) to high (<500 psi and even <6000 psi) pressures in  well-controlled to hostile environments, All Sensors offers 52 series of pressure sensors with a variety of outputs including basic, millivolt and amplified analog as well as digital to address these real pressures, including breathing.

All Sensors Corporation Low and Ultra-Low Pressure Sensors

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

Sensing Pressure in Washing Machines

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. In this blog we’ll be discussing the pressure in washing machines.

Sensing Pressure in Washing Machines

Initially, timing was used to estimate the amount of water for various washing machine cleaning cycles. Today, many manufacturers sense the pressure developed in an air dome that is referenced to the water level and provides a much more accurate measurement. The air pressure level is measured either by a pressure switch or a pressure sensor with air providing isolation from the long term effects of operating a diaphragm in direct contact with water and other contamination.

The pressure switch can close and/or open contacts to provide an input to other circuitry. In contrast, the pressure sensor can provide either an analog or digital output to the washing machine control unit. Since the pressure sensor’s output directly results in a power control function such activating a pump or motor, in some manufacturers products, the pressure sensor is mounted in a Power Control and Pressure Sensing Module. The water level in most washing machines is well below 2 feet (0.87 psi), so a pressure sensor that can measure 1 psi would work in this application.

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Air pressure is sensed to measure water level in washing machines. Source: http://removeandreplace.com/wp-content/uploads/2013/12/washer-overfill.jpg

 What do you think/Comments?
Do you have a pressure sensing question? Let me know and I’ll address it in an upcoming blog.
– Han Mai, Senior Marketing Specialist, All Sensors Corporation (hmai@allsensors.com)