Four Channel self contained acquisition system and power supply for the PSI Electronic Pressure Scanners

QUADdaq

• Compact four scanner (256 channel) acquisition system.

• High speed acquisition (up to 1000 measurements per channel per second).

• Temperature compensated engineering unit outputs over CAN or Ethernet.

• Compatible with Digital Thermal Compensation (DTC) scanners.

• 0.06% FS accuracy with DTC scanners,
0.25% with standard scanners.

• Hardware trigger for timing synchronisation.

• Rugged enclosure for on-car applications.

• Supplied with full software for configuration,
calibration and data logging.

The QUADdaq is a self contained 4 scanner acquisition system based on the successful Chell CANdaq. It provides a total solution to in-model acquisition acquiring accurate pressure data from the PSI pressure scanners, voltages and currents from th e Chell I-Daq, and temperature from th e Chell T-Daq.

Pressure Scanners

The QUADdaq takes full advantage of the DTC
pressure scanner technology and makes interfacing with them straightforward.

The DTC pressure scanners contain all their coefficients in an EEPROM inside the scanner. They also compenaste for temperature by measuring the temperature of every transducer. The DTC scanners also contain a 3X deranging option and shuttle valve position sense and all these functions can be accessed by the supplied software.

With standard scanners, temperature compensation is also available through the single temperature output offered by the scanners.

The QUADdaq can also be used with th e QD-VP valve driver which gives sofware contr ol over the pressure scanner shuttle valve.

Voltage, Current and Temperature Scanners

The QUADdaq will acquire voltages and currents from the Chell I-Daq and temperatures from the Chell T-Daq.

The QUADdaq senses what scanner type is
connected to, either a DTC scanner, a conventional scanner, an I-Daq or a T-Daq. The appropriate calibration coefficient and algorithms are then employed. This enables DTC scanners, I-Daqs and T-Daqs to become ‘ plug and play'.

Hardware Trigger

The QUADdaq also has the option of a hardware trigger. This can be used to synchronise the four units and to deduce timing information for the measurements taken.

The QUADdaq, like the CANdaq will operate a high accuracy and unparalleled high speed making it suitable for a variety of applications.
These range from wind tunnels, to education and on-car race applications.

Software

The software supplied with the QUADdaq allows the user to configure the acquisition in terms of speed, averaging and thermal compensation method used. It also provides a calibration interface, real time data window and data logging facilities. The QUADdaq is supplied with a DDE interface so data can be directly acquired into third party software such as Excel.

Easy to use wizards are also available to help
configure the QUADdaq to the application.