Cold cathode gauges accumulate a conductive coating over time. The manual advises:
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Pump the vacuum system down to a base pressure at least two orders of magnitude lower than the sensor's minimum reading. Execute the "ZERO" adjustment via the controller menu. Sensor Degas Cold cathode gauges accumulate a conductive coating over
The high voltage output (pin 3) is lethal. Always disconnect power before handling the cable. mks astron 2l manual
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