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Edwards Active and Passive range of gauges and controllers
With gauges being vital to any vacuum system in order to efficiently control and monitor processes, you can find a wide selection of technologies to best suit your application.
An Introduction to our range of Active, Passive and Digital Gauges & Controllers
In all cases we offer gauges that span the complete range from Atmosphere to UHV pressures. From Active to Passive and 2000mbar to 1e-12mbar we have the solution for you.
Capacitance manometer gauges: the most accurate “active” gauges we offer
Edwards capacitance manometer gauge
Accuracies of <1%
The ability to output a linear 0-10V signal or communicate via RS232
They are Electro-mechanical gauges using a ceramic membrane to form an electrode of a capacitor.
Available in a number of temperature controlled variants, our Capacitance range can be integrated into many applications where accuracy is key.
Documentation
Active gauges: a complete self-contained head & driver electronics in a compact unit
Edwards active gauge range
Typically need 24 V dc
Provide a 0-10 V output that relates to the pressure. This output can be S-shaped or Linear depending on the chosen unit.
surface mount integrated circuit electronics = a decreased size
Long flexible cables
as the cable only contains a drive voltage and high voltage output signals rather than low voltage signals that could be prone to interference
Non-specific controllers
TIC and ADC can be used to control multiple gauges, no need to specify exact gauges to use at time of ordering
Documentation
Digital gauges: eliminating the need for a separate controller
Edwards digital gauges range
Digital gauges are similar to Active in that they are self-contained including driving electronics, however they take this one step further and eliminate the need for a separate controller.
The Digital gauges simply need a supply voltage in the range of 15 to 48Vdc and then are serial comms enabled, so can be directly interrogated via a PC or PLC using either RS232 or RS485 communications.
Reduced overall costs
No external controller needed
Compact and efficient units
Long standard flexible serial cables
Documentation
Passive gauges: completely separate the measuring part from the driver electronics
Edwards passive gauge range
The head that is attached to the system only contains the items needed for the physical measurement and all other electronics is contained in the controller.
As such the controller and cable have to be specific to the desired gauge.
Gauge head less prone to interference
such as that from ionising radiation
Gauges and connectors can be more rugged
Suitable for industrial environments
Documentation
Portable gauging: be free of cabling and power
Edwards P3 portable handheld gauge
Portable gauging offers the opportunity to easily take spot measurement checks.
Thanks to it being mains power independent, the Edwards P3 handheld all-in-one measuring system is the essential device for: