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Active ion gauge (AIGX)

Active ion gauge (AIGX)
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Active ion gauge (AIGX) A compact active ion gauge with dual yttria coated iridium filaments, a wide measuring range from 6.6 x 10 -2 to 6.6 x 10 -10 mbar (5 x 10 -2 to 5 x 10 -10 Torr) and a 1 Volt/decade linear output. The AIGX gauge from Edwards incorporates all the benefits of the industry standard active gauging concept, with integral electronics and replaceable tube. The gauge has a degas facility and includes features to protect and extend the life of the filaments. The AIGX benefits from extremely low emissions of charged particles, which makes it an excellent choice for processes where background noise is undesirable. Features and benefits • Full 8-decade measurement capability, to 6.6 x 10 -10 mbar (5 x 10 -10 Torr) • Two versions available, each with three vacuum coupling variants: ͳͳ ‘D’ versions have a 9-pin ‘D’ connector and standard interface ͳͳ ‘S’ versions have enhanced functionality and are fully compatible with the range of Edwards controllers • Up to a thirty-fold reduction in charged particle process contamination compared to leading competitors • Automatic filament protection against switching on at atmosphere and running or degassing at high pressure • Gauge sensitivity remains constant over the whole measuring range, thus maintaining output accuracy at higher pressures • Continuous pressure measurement output during degas product datasheet • Innovative design eliminates the effects of X-ray limits • Bi-colour LED gives local indication of gauge status. • Wide input voltage range • Electronics very easily removable for bakeout at up to 200°C • ‘S’ versions provided with seamless automatic emission current switching, for prolonged filament life • ‘S’ versions provided with diagnostic outputs indicating ‘emission off’, ‘broken filament’ and ‘overpressure trip’ to help with troubleshooting • ‘S’ versions provided with a push-

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Pressue range 6.6 x 10-2 to 6.6 x 10-10 mbar Power consumption Normal operation: 7W (max) Degas: 14W (max) Output signal Linear, 1 Volt/decade Response time 1.33 x 10-8 mbar (>10-8 Torr) ~100ms Tube details Typically +/- 15% of reading (better with optional calibration) Set point (open collector transistor) 1 on 'S' versions only Maximum voltage 30 V dc Temperature range Operating temperature 0° to +40°C External interface connectors 'S' versions 8-way FCC68/R145 socket Manually selectable dual yttria coated iridium Dimensions - shown in mm (inch) Degas Three minute...

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