Weighing a Pod with 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.

Weighing a Pod with Pressure

In shipping operations, the weight of the load is important. The transporting vehicles have weight restrictions determined by the physical limitations of the truck and its engine. In addition, the transportation can be regulated by the state’s Department of Transportation (DOT). Federal laws regulate the weight of commercial vehicles on roads and bridges as well.

To easily measure the weight of a load, pressure measurements (in pounds per square inch (psi)) can easily be converted to pounds, especially where hydraulic cylinders lift the load. The area (A=πR2) of the piston in the cylinder (times the total number pistons performing the lifting) multiplied by the pressure reading provides the weight of the load (in pounds).

In many instances, analog gauges still provide the readout, since they are easy to read by an operator controlling the loading process. However, if the measurement needs to be communicated to a central system and coordinator in charge of managing the loading and shipping of many containers and vehicles, a digital microelectromechanical systems (MEMS) pressure sensor provides an easy-to-use digital alternative.

Force Pressure Readings of Pod Measurements

The vehicle operator sees a weight measurement but the gauge actually measures pressure.

Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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Pressure Readings Aplenty in a Fire Truck

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 Readings Aplenty in a Fire Truck

If you are coming to the rescue in a fire truck, you need to bring several pressure gauges. A recent trip to the local fire department brought this point home.

Firetruck Pressure Gauges

Two large pressure gauges in the upper left-hand corner for the supply line show the intake water pressure from a fire hydrant and output (master discharge pressure) from the pump on the vehicle and have a maximum reading capability of 400 psi. The next row shows the readings from seven valve-controlled stations that are monitored for their ability to respond when necessary. Note that the gauges are color coded to allow easy identification of a specific zone.

Analog gauges are easy to read and convenient for a fire fighter controlling the valves. However, microelectromechanical systems (MEMS) pressure sensors with digital readouts and ability to transmit those reading to another monitoring location could provide additional benefits to the fire fighters and the fire control process.

Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
Email us at [email protected]