Edwards APGX-H 1/8 NPT (Stainless Steel) Linear Convection Vacuum Gauge has a wide measuring range from 1333 to 3 x 10-4 mbar (1000 to 2.3 x 10-4 Torr). The use of APGX-H 1/8 NPT convection technology ensures accuracy and sensitivity are maintained to the top of the range. \n \nThe Edwards APGX-H 1/8 NPT 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. \n \nThe Edwards APGX-H-NW25 uses the constant temperature principle in which the cooling effect of the gas on the filament is overcome by varying the voltage applied, which in turn maintains a constant resistance and keeps the circuit in equilibrium. This voltage is therefore a measure of the pressure in the gauge tube. It should be noted that different gasses have different thermal properties and as such the output of Edwards APGX-H-NW16 is gas dependant. \n

Pressure range	1333 to 3 x 10-4 mbar(1000 to 2.3 x 10-4 Torr)
Power supply	14.5 to 30 V DC
Power consumption	1.5 W maximum
Accuracy	±15% of reading ±3 x 10-4 mbar
Repeatability	±5% of reading
Response time	< 100 ms
Maximum overpressure	10 bar absolute (145 psia)
Adjustments	Set vacuum and set atmosphere. To allow for variations in barometric pressure, atmosphere may be set in the range 700 to 1100 mbar (525 to 825 Torr).
Setpoints† (open collector transistor)	Range of setpoint 1.8 to 9.3 V
	Rating 30 V DC 100 mA
	Fixed hysteresis (1/2 decade) 500 mV