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Full parts and spares list
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Edwards e2m2 vacuum pump
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Edwards e2m5 vacuum pump
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Edwards e1m8 vacuum pump
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Edwards e2m8 vacuum pump
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Edwards e2m12 vacuum pump
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Edwards e1m18 vacuum pump
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Edwards e2m18 vacuum pump
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Edwards e2m28 vacuum pump
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Edwards e2m30 vacuum pump
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Edwards e1m40 vacuum pump
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Edwards e2m40 vacuum pump
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Edwards e1m80 vacuum pump
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Edwards e2m80 vacuum pump
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Edwards e1m175 vacuum pump
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Edwards e2m175 vacuum pump
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Edwards e1m275 vacuum pump
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Edwards e2m275 vacuum pump
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EH250 blower
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EH500A blower
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EH1200 blower
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EH2600 blower
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EH4200 blower
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Edwards Speedivalves
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RV3 Vacuum pump
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RV5 Vacuum pump
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RV8 Vacuum pump
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RV12 Vacuum pump
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Edwards vacuum oils:
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edwards 8A oil
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edwards supergrade A
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edwards 17 oil
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edwards 20 oil
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edwards 16 oil
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edwards 18 oil
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edwards ultragrade 15
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edwards ultragrade 19
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edwards ultragrade 20
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edwards ultragrade 70
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edwards 45 grade oil
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Absolute Vacuum present:
Edwards® Calibration equipment

Edwards® EC6ST 6 Port Calibration System

Edwards EC6ST 6 Port Calibration System

Edwards® EC6ST 6 Port Calibration System

Features & benefits
  • Quality standards including ISO 9000
  • Calibration from 1000 mbar to 10'6 mbar
  • Simultaneous calibration of multiple gauges
  • Baking facility to reduce cycle times

Edwards® EC6ST 6 Port Calibration System

  • Designed to enable gauge users to comply with quality standards
  • Suitable for commercial military and government establishments.
  • Regular calibration of measuring equipment used in production processes.
The majority of vacuum applications operate within the pressure range 1000 mbar to 10-6 mbar, with instruments most often requiring calibration being:
  • Capsule gauges,
  • Thermal conductivity types
  • Pirani gauges
  • Thermocouple gauges
  • Magnetron gauges
  • Hot cathode ionisation gauges.
  • Calibration system: six-port chamber fitted with a liquid nitrogen cold trap
  • Chamber capable of isolation from the turbomolecular pump via manually operated isolation valve

  • Chamber is 'roughed' by a rotary pump connected via an electrically activated valve.
  • Used as a 'backing' pump for the turbo as secondary purpose
  • Calibration gas admitted to system via a narrow pipe
  • Dis-charging gas towards domed top of the chamber.
  • Flow of gas controlled by a manually operated fine control needle valve
  • Calibration performed by connecting test gauges to the chamber
  • Evacuating to a base pressure at least a decade and a half below the lowest point to be calibrated.
  • Calibration gas inlet valve increases the pressure
  • Readings on the test gauge compared to that of the reference master gauge.

Edwards® EC6ST 6 Port Calibration System

Technical Data

Base pressure (cold trap empty) 5 x 10 -8 mbar after 5-10 hours (typically)
Chamber volume 5 liters
Test ports Total 6. 4 ports used by reference gauges
Gas inlet control Fine control needle valve
System pressure control Manual gas inlet and pumping speed control
Reference gauges 1 x 10 -6 to 5 x 10-3 mbar (ion gauge)
    1 x 10-3 to 1 mbar (1 mbar range Barocel)
    0 to 10 mbar (1 (1 mbar range Barocel)
    1 to 1 000 mbar (1 000 mbar range Barocel) Note- Other gauges available on request.
Vacuum pumps Turbo pump EXT250, DN1OOCF Rotary pump RV5
Baking temperature 90 ° C
Dimensions see diagram Vacuum
Weight packed: 400 kg Unpacked: 200 kg

Edwards EC6ST 6 Port Calibration System

Edwards® EC6ST 6 Port Calibration System

Part Information

EC6ST – 6 port calibration system (230 V 50 Hz): D15487000
EC6ST – 6 port calibration system (115 V 60 Hz): D15488000