Digital pressure gauge
A pressure gauge is an instrument designed to indicate the pressure state of a fluid, either a gas or a liquid, or a pressing force such as weight. A tire pressure gauge is adapted to measure the air pressure of a tire, an extinguisher gauge is adapted to measure the internal pressure of a fire extinguisher. Regular pressure gauges include two types, i.e., one without liquid and the other with liquid (oil-filled). A pressure gauge with fluid is internally filled with an oil, for example, glycerin. The viscosity of the oil protects the internal component parts of the pressure gauge against vibrations. A pressure gauge generally consists of a spring element and a measuring or sensor device. The primary sensing element of the gauge typically comprises a Bourdon tube that incurs a predictable displacement in response to pressure changes to which it is exposed. A differential pressure gauge measures differential pressure between two sources of pressure other than atmospheric pressure. The differential pressure gauge has a housing containing a first Bourdon tube that measures a first pressure. The interior of the housing is filled with a fluid. A differential pressure sensor senses the difference between a pressure at the head space of the tank, or head pressure, and a pressure at the liquid space of the tank, or liquid pressure, also known as column pressure. By measuring the pressure difference between the pressure at the liquid space and the pressure at the head space, the differential pressure sensor senses the pressure solely attributable to the weight of the liquid. Typically, this pressure is measured either in pounds per square inch (psi), or in inches of water column. Pressure gauges can generally be divided into two kinds. The first kind is a pen-type, and the other type has pressure indicator on a scale board. The value of pressures can be displayed in either digital or analog form. A digital pressure gauge generally involves the application of a microprocessor and a pressure measurement device such as a pressure sensor or load-cell coupled with a potentiometer.
There's no product listing here. Be the first to
submit your product information.
Related products