Pneumatic Transducers

The lab possess three 16-channel PSI 9116 units from Pressure Systems Inc with a 500 Hz sampling frequency. With a custom calibration, the PSI-9116 unit provides a pressure measurement uncertainty of 0.1% in the pressure range from 500 to 2500 Pa and an uncertainty of ±1 Pa in the range from 0 to 500 Pa.

When the allocated space is limited, miniature pressure scanners are used. The laboratory has two 32-channel ESP-32HD digital miniature pressure scanners with a DTC-Initium unit from Pressure Systems Inc. The two ESP-32HD units have a measurement range of ±2500 Pa and an accuracy of ±1.5 Pa.

As a high-accuracy reference, four FCO 510 micromanometers from Furness Control are used. There are two units with a 200 Pa measurement range and two units with a 2000 Pa measurement range. The FCO micromanometers are calibrated annually by a certified company. The accuracy of the manometers is at least 0.25% of the reading and better than 0.025% of the measurement range.

A single FCO560 2000Pa is used for calibration using its internal pressurising pump with an accuracy of 0.1% of the reading + 0.003Pa.

A few enhanced FCO432 is used in the lab for high accuracy pressure measurement.

For time-resolved pressure measurements, 10 Kulite sensors are available. A large amount of miniature single-channel absolute and differential pressure transducers is available as well. The transducers have a typical measurement error of 0.5-0.75% of the full scale.

All pressure transducers are currently incorporated into an automated data communication and measurements protocol.​

Published: Thu 28 Mar 2019.