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Vacuum Conversion Factors:

From Inches of Hg

  • to Atmospheres multiply by 0.0334211
  • to Bars multiply by 0.0338639
  • to mm of Hg multiply by 25.4 (Torrs=1mmHg)
  • to Grams/sq. cm multiply by 34.5316
  • to pounds/sq. ft multiply by 70.7262

       
From Atmospheres

  • to Bars multiply by 1.01325
  • to mm of Hg multiply by 760
  • to Grams/sq. cm multiply by 1033.23
  • to Pounds/sq. inch multiply by 14.6960
  • to Torrs multiply by 760
  • to Ft of H2O multiply by 33.8995

Performance Specifications

All performance specifications stated, including but not limited to, pump-down rates and vacuum levels make the following assumptions:

  • The Vacuum Chamber is empty.
  • The Vacuum Chamber and other system components are clean and dry.
  • The System is being operated at Sea Level
  • The ambient temperature is 18°C +/- 2°C
  • All system components, including those not supplied by Abbess, are appropriate for the system and are functioning properly.
  • The specifications are not impacted by the properties of your product.

If you require performance specifications for conditions other than those listed above, it is vital that you make this known to Abbess Instruments in writing.  Generally Abbess Instruments recommends choosing chamber and pumping system qualities capable of achieving a theoretical vacuum at least an order of magnitude better than the desired operational vacuum. 

It is to be noted that a specification described as '10-5 Torr' is a range, and means the clean, empty, dry chamber system is capable of reaching some undetermined value between 1.0x10-5 and 9.9x10-5 Torr: The (clean, empty, dry) chamber is deemed compliant whether its As-Built base vacuum is 1.0x10-5 Torr or 9.9x10-5 Torr. It does not mean that the chamber is guaranteed to reach every level within that range.


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Phone: (508) 881 8811 Fax: (508) 881 4884

Abbess Vacuum Gauge Selection Page

Alcatel - Vacuum Gauges
Alcatel Gauges ASD2001
Capacitance Gauge
ASD2004
Capacitance Gauge
AP 2004
Pirani Gauge
AHC 2010
Hot Cathode / Pirani
 
Inlet Flange DN16 DN16 DN16 DN25
Output  0-10VDC linear  0-10VDC linear
 

Measurement Range mbar (Torr)

1333 to 10E-1
(1000 to 7.5E-2) 

1.3 to 10E-4
(1 to 7.5E-5)

1000 to 5.0E-4
(760 to 3.75E-4)

1000 to 5.0E-10
(760 to 3.75E-10)

Price US$, Gauge $1620 $1620 $675 $1,450
Gauge Controller ACS 2000
ACS 2000
ACS 2000
ACS 2000
Sensor Cable 5M 5M 5M 5M
Power Input Gauge

50/60Hz single phase

100-240 Vac, 100VA 100-240 Vac, 100VA 100-240 Vac, 100VA 100-240 Vac, 300VA
Price US$, 5m cable and controller $875

$875

$875 or
use RS485 interface
(2 setpoints) to connect to PC VCC

$875 or
use RS485 interface
(2 setpoints) to connect to PC VCC

See our Standard vacuum pumps