Monthly Archives: February 2018

Large Pressure Drop Indicates a Bomb Cyclone

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.

Large Pressure Drop Indicates a Bomb Cyclone

One of the first weather oddities to hit the United States in 2018 was the bomb cyclone, or bombogenesis, as meteorologists call it. This type of winter storm with unusually low temperatures is indicated by a low pressure drop of at least 24 millibars (0.35 psi) in 24 hours. With normal pressures around 1000 millibars (14.7 psia) near sea level, this represents a 2.3% change from the normal reading.

In this year’s bomb cyclone, the pressure dropped by 54 millibars in 24 hours, more than twice the standard criteria, indicating a very strong storm. In fact, it was considered one of the greatest rapidly deepening rates ever observed by the National Weather Service.

With the continuous resolution capabilities of microelectromechanical (MEMS) pressure sensors, even the change of a few millibars can be easily observed with an absolute pressure sensor.

NOAA GOES-16 Weather Satellite

The 2018 bomb cyclone as observed from the GOES-16 weather satellite, which is operated by the National Oceanic and Atmospheric Administration.

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

Propane Tank 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.

Propane Tank Pressure

Keeping warm in a mobile home or camper in the winter or enjoying an outdoor barbeque in the summer would be much more difficult with propane. Even patios can be made comfortable by a propane-powered heater. This highly portable energy form is typically conveyed and stored in one-pound, twenty-pound, 30-pound or 100-pound tanks.

Pressure Gauges

To know how much gas is in a consumer tank, especially one that is stored for a long time in between uses, pressure gauges with rather broad indicators are used. Green (full), yellow (low gas), and red (empty) bands display the fuel level and account for the variations due to different ambient temperatures.

Propane Tank Pressure Gauge

Unlike, natural gas appliances that operate at pressures around 7 inches of water column (WC) or 14.9 millibars, 1743 Pa, or about 0.25 psi (pounds per square inch, a common operating pressure range for propane (liquid petroleum or LP gas) appliances is 10 – 11 inches WC or 27.4 millibars, 2491 – 2739 Pa or about 0.36 – 0.40 psi.

Since the pressure in a propane tank can range between 100 and 200 psi, its pressure must be reduced and regulated for use in a home, motor home, camper or an outdoor gas appliance, typically to 10.5 inches water column.

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