The pressure scanners are the most important component of a pressure scanning system. Each pressure scanner combines one silicon pressure sensor per measurement port with multiplexers a common amplifier and a bi-stable calibration valve to achieve high accuracy measurements for high numbers of channels within a compact package. Recent advancements include DTC – Digital Temperature Compensation which combines a temperature sensor per port with on-board EEPROM memory for extensive factory calibration. The factory calibration is used by the system microprocessors to achieve unmatched pressure measurement accuracy in a thermally unstable test environment. Pressure scanners are available in miniature size with 16, 32 or 64 measurement channels per scanner, or in ruggedized 16 channel instruments with direct digital output capable of withstanding 30g shock, 160 dB noise with IP66 environmental rating. 

The PSI 9146 and 9046-S TempScanners are networkable instruments to measure thermocouples, RTDs or voltages. On-board signal conditioning, analog to digital conversion and microprocessor compensation combine to provide high accuracy data. Host PC interface is achieved via Ethernet at data throughput rates up to 33 Hz in Engineering Units or 100 Hz in raw count data format. The 9146 and 9046-S are part of the NetScanner™ family of instruments. All NetScanner instruments share a common power, communication and software protocols.

Measurement Specialties offers 3 pressure scanning data system solutions. The first two are for use with the ESP miniature electronic pressure scanners. Offering ease of use and high speed acquisition, the DTC Initium utilizes the embedded calibration within the EEPROM of each DTC-style ESP pressure scanner. Up to 8 pressure scanners and 512 channels can be interfaced directly to one DTC Initium and achieve 0.05% system accuracy with on-line Rezero function. The System 8400 is for installations where a miniature pressure scanner interface is desired to minimize the number of cables exiting the test object. Typically used in Aerospace windtunnel applications the System 8400 utilizes an SDI – scanner digitizer interface to provide single fiber optic data link for 1024 channels to the host system with accuracies as high as 0.03%. The third solution is the NetScanner System which consists of networkable scanners with Ethernet interface. The NetScanner scanners are stand-alone data systems with integration from sensor to host interface that are combined to form application specific system solutions to measure pressure and temperature parameters in windtunnels and turbine engine testing environments.

　

Models 9034 and 9038 are compact pressure calibrators with set-point control accuracy of up to ± 0.01% FS that are also capable of extraneous pressure measurement. The calibrators provide a pre-engineered solution for applying known stable pressures to electronic pressure scanners, or any pressure measurement device, for periodic calibration or verification. Model 9032 and 9033 are precision pressure standards capable of measuring dry non-corrosive gases to an accuracy of ± 0.01% FS. The Model 9032 Barometer offers an excellent solution for precision measurement of atmospheric pressures to complement differential electronic pressure scanners used in the acquisition of multiple pressures.

Pressure scanning systems utilize soft nylon or polyurethane tubing to bring the measurement connections to the scanners. Measurement Specialties offers a broad range of accessories to facilitate reliable and easy tubing connectivity.

Tubing – Variety of sizes and materials to mate the scanners to the installation
Quick Disconnects – Multichannel pneumatic connectors to quickly and reliably disconnect and reconnect large numbers of physical tubing connections. QD’s can be integral to the scanners or separate in-line devices.
Reducers & Tee’s – Reducers facilitate changing the tubing diameter and tee’s permit joining tubes together. These accessories are installed in line with the measurement tubing.
Patch Panels – Using compression fittings the patch panel solutions are used to bring large measurement lines to rack mount pressure scanning solutions.
Tools – From tubing pliers to simplify nylon tubing connections to custom wrenches to fit tight locations, our tools provide solutions unique to pressure scanning requirements