Specifications

  • Sensor Type
    Inverted Magnetron Cold Cathode
  • Installation Orientation
    Any
  • Measurement Range
    3 x 10-10 to 5 x 10-3 Torr
  • Set Point Range
    3 x 10-10 to 5 x 10-3 Torr (standard 903 only)
  • Repeatability
    Approximately 5% of reading
  • Calibration Gas
    Air, Nitrogen
  • Connector
    9-pin Type "D"
  • Operating Temperature
    0° to 50° C (32° to 122° F)
  • Bake Out Temperature
    400° C (752° F) without electronics
  • Relative Humidity
    80% maximum for temperatures less than 31° C, decreasing linearly to 50% maximum at 40° C
  • Relays
    1 SPDT relay set point (standard 903 only)
  • Relay Contact Rating
    1 A @ 30 VDC, resistive
  • Relay Response
    < 50 msec (0 to 99%) for Δp from 5.0 x 10-8 to 3.0 x 10-4 Torr
  • Power Requirements
    14 to 30 VDC, 3 Watts max
  • Voltages
    903 (Standard): 1.5 to 8.7 VDC
    903 (AP): 0.5 to 7.7 VDC
  • Exposed Materials
    304 and 302 stainless steel, aluminum, Inconel® x-750, glass, alumina ceramic
  • Case Material
    ABS plastic, UL94-5V flame rating (with conductive coating)
  • Internal Volume
    15.0 cc
  • Weight
    2.3 lb (1.04 kg) with CF Flange
  • Display
    903 (Standard) LED Indications: Set point (red), high voltage (yellow), and power (green)
    903 (AP) LED Indications: Vacuum (red), high voltage (yellow), and power (green)
  • Compliance
    CE

Features

Process Control Relay

The Standard 903 has one relay set point standard for process control that can be set to trip anywhere within its set point range. Set point activation status is shown with one of three LED indicators. Power and high voltage status are also indicated.

High Voltage Activation

The high voltage activation feature is a convenient way for you to shut off power to the 903 locally without shutting down your entire system. Deactivating the high voltage at pressures above 10-2 Torr reduces the effects of contamination in the sensor.

Resources

Manuals
Literature
Other
Drawings And Cad

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