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Home / Products / Oxford Applied Research / Piezoelectric Gas Doser

Piezoelectric Gas Doser

The Piezoelectric Gas Doser - PLV1000 from Oxford Applied Research

The piezoelectric gas dosers from Oxford Applied Research are high quality all-metal (no elastomers) UHV compatible dosers which are actuated by means of an internal piezoelectric crystal stack. Application of a voltage to the stack causes it to extend thereby lifting a ceramic plunger which, unenergised, is sealed to the valve seat by a high tension spring.

Read blog: What is a PLV or piezoelectric leak valve?

This design provides fail-safe operation such that in the event of power failure, the valve automatically closes preventing venting of the system. Power is provided for the valve by a compact supply, permitting remote control which is particularly advantageous where the valve is situated in inaccessible or hazardous locations. The linear extension of the piezo-stack with voltage preserves the relationship between leak rate and old-style manual control knob position, as shown in the adjacent graph. Greatest control is provided where it is needed most – in the extremely low flow regime.

PC Control

Computer interface options are available which allow the valve to be integrated into most existing control systems.

Pulsing mode

The valves can be pulsed either manually or using an external TTL trigger. This allows gas pulses of minimum duration 30 ms to be injected into a process or chamber. changes in the vacuum environment, such as temperature and pressure.

Contact Micro Photonics for more information at 610-366-7103 or info@microphotonics.com

  • 0-1000V Power Supply
  • PC Control for Serial Communication (Only available with OAR Power Supply)
Model PLV1000
Mounting NW19CF / VCR inlet or outlet
Stack Voltage 0-1000V
Gas Leak Rate 5×10-10 to 5×10-2 torr.l.s-1
Minimum Pulse Duration 20ms
Operating Temperature Ambient
Power Off State Closed

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