Active Linear Convection Gauge

The Active Linear Convection Vacuum Gauge has a wide measuring range from 1333 to 3 x 10⁻⁴ mbar. The use of convection technology ensures accuracy and sensitivity are maintained to the top of the pressure range compared to conventional Pirani gauges, which lose accuracy above 100 mbar.

The gauge is compact and may be mounted in any orientation, simplifying installation where space is limited. The gauge incorporates a setpoint and two LEDs, which indicate setpoint and gauge status.

Technical Data

Pressure range


Max overpressure

Temperature range Operating

Temperature range Storage







Edwards APGX-H


1333 to 3x10-4

Typically +/- 15%

10 bar absolute (145 psi)

+5 to +60

-30 to +70

NW16 / NW25 / 1/8NPT


Spectroscopy magazine

Features & Benefits

Wide measuring range

1333 to 3 x 10⁻⁴ mbar

Consistent measuring accuracy

Use of convection technology ensures consistent measuring accuracy (typically ±15%) and repeatability (±5%) to top of range

Reduced cost of ownership

Replaceable tubes are available

Standard analog output

Log linear in range 2.5 to 9.125 V (1V/decade). Compatible with our ADC, AGD and TIC controllers

Easy installation in restricted spaces

Maintains accuracy in any orientation across the whole measuring range

Local status indication

LEDs indicate setpoint and gauge status at the gauge head