Dwyer Magnehelic Guages

The Magnehelic guage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels with bubbler systems and pressures in fluid amplifier or fluidic systems. It also checks gas-air ratio controls and automatic valves, and monitors blood and respiratory pressures in medical care equipment.

Specifications

Service Air and non-combustible, compatible gases (natural gas option available).
Accuracy ±2% of FS (±3% on - 0, -100 Pa, -125 Pa, 10MM and ±4% on - 00, -60 Pa, -6MM ranges), throughout range at 70°F (21.1°C).
Pressure Limits -20 in Hg to 15 psig† (-0.677 to 1.034 bar); MP option: 35 psig (2.41 bar); HP option: 80 psig (5.52 bar).
Overpressure Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection Note on next page.
Size 4˝ (101.6 mm) diameter dial face.
Mounting Orientation Diaphragm in vertical position. Consult factory for other position orientations.
Process Connections 1/8˝ female NPT duplicate high and low pressure taps - one pair side and one pair back

Note: For more detailed specifications, please download the additonal documents