The 974B QuadMag™ vacuum transducer offers a measurement range from 1x10^-8 to 1500 Torr and combines cold cathode inverted magnetron, MicroPirani and Piezo differential sensor technologies. The 974B has been specifically designed for pressure measurement within a vacuum loadlock. It has the capability to replace multiple pressure measurement devices on a loadlock with its absolute pressure measurement from atmosphere to 10^-8 Torr and atmospheric switching capabilities. Subsequently, OEM’s can reduce costs with a simplified loadlock design.

• Absolute measurement from 10^-8 Torr to atmosphere
• Cold cathode anode module is user serviceable to decrease downtime
• MEMS based MicroPirani sensor allows low auto cold cathode turn-on pressure
• Ease of operation via analog output, RS232, and RS485
• Optional integrated touch-screen display available for local pressure indication, etc.
• Small footprint design provides a compact transducer solution