QD-VP Pneumatic Valve Controlller

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CANdaq and QUADdaq Acquisition Systems

QD-VP Valve Driver

Pneumatic valve controller for the QUADdaq CANdaq series of products

• Pneumatic valve drive for QUADdaq and CANdaq products

• Provides actuation of scanner C1 and C2 valves for re-zero and calibration.

• Two QD-VP’s can be daisy-chained together and controller by one QUADdaq / CANDaq.

• Complete with electrical output for external purge valve.

• Compact and rugged enclosure.


The QD-VP valve module is an accessory to the CANdaq range of acquisition devices. The module contains two solenoid valves designed to control the shuttle of Pressure System ™ ESP pressure scanners. There is also an electrical drive to allow a solenoid valve to control purge gas. The valves are controlled via three address lines, and up to two QD-VP modules may be connected to one QUADdaq. Each valve being independently addressed.			The diagram to the right shows the layout of a typical system using a CANdaq. Dry, clean, compressed air is supplied to the QD-VP which switches this air to the C1 and C2 valves when requested by the CANdaq software. The diagram does not show the optional purge valve. This is an external valve (not supplied) which is connected to a 12 volt output of the QD-VP. This allows the user to select a high flow valve suited to the application.

Typical Setups:
Click the adjacent thumbnail for an image of a typical QUADdaq / QD-VP arrangement.			Click the adjacent thumbnail for an image of a typical CANdaq / QD-VP arrangement.
For full specification please download the PDF data sheet (1.175Mb). QUADdaq and CANdaq Home page - Miniature High Speed Acquisition Chell Instruments Home Page - Gas Pressure and Flow Instrumentation