How to select a pressure scanner?
A pressure scanner is a high-precision device used for simultaneous multi-point pressure acquisition and monitoring. Its core function is to rapidly and continuously acquire pressure data from multiple pressure measurement points in a complex system using automated scanning technology, and then feed the data back to the control system or host computer. Unlike traditional single pressure sensors, pressure scanners can sequentially switch and measure dozens or even hundreds of measurement points, significantly improving data acquisition efficiency. They are widely used in wind tunnel testing, engine testing, industrial process monitoring, and other scenarios.
When selecting a pressure scanner, multiple factors need to be considered. The following are the key parameters to confirm during selection:
1.Measurement Range: It is essential to determine the pressure range of the scanner. Accuracy is usually expressed as a percentage of the full scale. If the actual measured pressure is far below the range, the relative error may be large; if the actual pressure exceeds the scanner’s range, it can result in inaccurate measurements or even sensor damage. Therefore, selecting the appropriate range is crucial. KETU&TEST pressure scanners support customized single-channel ranges, from ±500 Pa to 10 MPa, with a maximum negative pressure of -100 kPa.
2.Accuracy Requirements: Accuracy is critical to ensuring reliable measurement data, reducing maintenance costs, prolonging equipment life, and supporting scientific research and development. When selecting a scanner, choose an accuracy that meets the specific application requirements. The in-house developed scanners of KETU&TEST can achieve a maximum accuracy of ±0.05% FS, and the actual R&D requirements often demand even higher precision.
3.Sampling Rate: The sampling rate determines the number of measurements per unit time. High sampling rates allow scanners to capture transient pressure changes more accurately, which is essential for applications requiring rapid dynamic process monitoring. KETU&TEST scanners offer adjustable single-channel sampling rates from 0 to 500 Hz, satisfying most application scenarios.
4.Pressure Type: Common measurements include gauge pressure, absolute pressure, and differential pressure. Gauge pressure measurement is the most accurate and widely used. By adding an internal atmospheric pressure module, absolute pressure can also be measured.
5.Number of Channels: Choose the appropriate number of channels based on measurement requirements. For example:
KTPS series: 16 or 32 channels/KTSA series: 16, 32, or 64 channels/KTRT rack-mounted series: up to 128 channels. KETU&TEST scanners use multi-channel synchronous acquisition technology, enabling simultaneous measurement of multiple pressure points. By rapidly capturing pressure signals from all ports, the system provides comprehensive monitoring of the entire fluid system.
6.Size Requirements: Select suitable dimensions and installation methods based on available space and piping specifications.
7.Brand and Technology: Since pressure scanners are relatively high-cost instruments, it is crucial to choose a manufacturer with reliable reputation and strong technical capabilities. KETU&TEST has years of expertise in pressure and temperature measurement and provides professional technical consultation and services. Its products have excellent quality and are already used in collaboration with multiple universities and research institutes.
In summary, selecting the right pressure scanner based on specific application needs is essential to ensure stable and efficient operation in practical use.
