Category Archives: Pressure Measurement

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Oil & Gas, Pressure Measurement, Utility

Pressure Transmitter to Detect Burner Flame Instability

Large-scale industrial installations such as refineries and chemical plants often have large direct-fired heaters that are used in the processing of fluids and gases.  Such heaters must now be designed… Read More

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Pressure Measurement

Leak Test using Pressure Transducers

Introduction: Leak tests are often performed on manufactured items before shipment to verify pressure integrity.  The most common way of doing this is to pressurize the article, seal it off… Read More

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Aerospace, Automotive, Data Acquisition, Flight Testing, Pressure Measurement

Vehicle Hydraulic Brake System Testing

Automotive braking systems are obviously very important and must be thoroughly tested prior to production.  The force applied to the brake pedal by the driver must be sufficient to provide… Read More

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Pressure Measurement

Measuring Flow in Liquids with Pressure Transducers

Differential pressure transducers have been widely used to measure flow rate of in-compressible liquids such as water.  The most common method is to measure the pressure drop across an orifice… Read More

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Pressure Measurement

Measuring the Vertical Hydraulic Gradient in River Beds

Where does the water in a river come from?  The obvious answer is that it comes from upstream, the sum of the waters added by many tributaries.  This is certainly… Read More

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Aerospace, Flight Testing, Oil & Gas, Pressure Measurement, Utility

Tank Level Measurement

Introduction: Measuring the fluid level in tanks is a common requirement for almost every industrial process.  The automatic control of fluids depends on knowing how much liquid is stored in… Read More

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Aerospace, Flight Testing, Military, Pressure Measurement

Absolute Pressure Sensor or Gage Pressure Sensor?

An absolute pressure sensor measures the pressure relative to zero absolute pressure or a perfect vacuum. A gage pressure sensor measures the pressure relative to the normal atmospheric pressure. This… Read More

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Pressure Measurement

Estimating the Frequency Response of Variable Reluctance Pressure Sensors in Gas

Summary – Frequency response is defined as the ability of a measurement system to accurately reflect dynamic pressure changes. The measurement system consists of a pressure sensor and its associated electronics and… Read More

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Automotive, Military, Pressure Measurement

Engine Air Filter Pressure Drop

Automotive engines require a lot of air as part of the internal combustion process.  Anyone who has lifted the hood on their automobile knows that the air coming into a… Read More

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Carrier Demodulator, Pressure Measurement

Pressure Sensors and External Carrier Demodulators

The most popular Validyne pressure transducers are the P55/P61/P365 series.  These all include a pressure sensor, carrier demodulator electronics package, a high level output signal, temperature and linearity correction as… Read More