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.
The Pressure to Automatically Make Ice
The ice dispenser on a refrigerator is a great feature and, in most cases, taken for granted – until it doesn’t make ice. One of the reasons for an icemaker failure is insufficient water pressure. To work properly, most refrigerators require a minimum of 20 to 40 psi for the icemaker. This ensures that the water inlet valve functions properly. For a particular make and model of refrigerator, the exact water pressure requirement is specified in the installation manual. To verify the pressure value to use in the manual, the manufacturer would make several measurements to determine the minimum pressure.
Since refrigerators (and most home owners) do not have a pressure gage, how can insufficient water pressure be ruled out as a cause of an icemaker failure? One manufacturer recommends dispensing water into a large measuring cup for 20 seconds and if the amount of water is more than 13.5 ounces (400 cubic centimeters), the water pressure is OK. If a person really wanted to know the exact amount, they could use one of All Sensors’ SPM 401 Series or CPM 602 Series pressure sensors with media isolation to prevent interface problems.
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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