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Magnehelic® Differential Pressure Gauges
Measures differential air pressure Ranges from 0.25 inches of water to 30 psid Natural Gas Option Available Resists Shock, Vibration and Over-Pressure to 35 psi (with option -MP) Includes hardware for flush or surface mounting Dual 1/8” NPT ports on the back and side Over 81 ranges to choose from Specifications: Service: Air and non-combustible, compatible gases. (Natural Gas option available.) Note: May be used with hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi. Wetted Materials: Consult factory. Housing: Die cast aluminum case and bezel, with acrylic cover, Exterior finish is coated gray to withstand 168 hour salt spray corrosion test. Accuracy: ±2% of FS (±3% on -0, -100PA, -125PA, -10MM and ±4% on -00, -60PA, -6MM ranges), throughout range at 70°F (21.1°C). Pressure Limits: -20 in Hg. to 15 psig.† (-0.677 bar 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 Catalogue page. Temperature Limits: 20 to 140°F.* (-6.67 to 60°C). 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. Weight: 1 lb 2 oz (510 g); MP & HP 2 lb 2 oz (963 g). Standard Accessories: Two 1/8" NPT plugs for duplicate pressure taps, two 1/8" pipe thread to rubber tubing adapters and three flush mounting adapters with screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.) †For applications with high cycle rate within gage total pressure rating, next higher rating is recommended. *Low temperature models available as special option.
Accessories
A610 - Pipe Mounting Kit Comes complete with mounting plate and U- clamp to fit up to 2” diameter pipe.
A368 - Surface Mounting Plate
A369 - Stand Bracket
A432 - Portable Kit. Includes: Stand bracket, carrying case, static pressure tube and rubber tubing. Magnehelic gauge not included.
Standard Stocked Models: Part Number Range 2000-00N -0.05 to +0.1”H2O 2000-00D 0 to 0.25”H2O and 0-60 Pa dual scale 2000-0D 0 to 0.5”H2O and 0-125 Pa dual scale 2001D 0 to 1”H2O and 0-250 Pa dual scale 2002D 0 to 2”H2O and 0-500 Pa dual scale 2003D 0 to 3”H2O and 0-750 Pa dual scale 2004D 0 to 4”H2O and 0-1 kPa dual scale 2005D 0 to 5”H2O and 0-1.25 kPa dual scale 2006D 0 to 6”H2O and 0-1.5 kPa dual scale 2008D 0 to 8”H2O and 0-2 kPa dual scale 2010D 0 to 10”H2O and 0-2.5 kPa dual scale 2015D 0 to 15”H2O and 0-3.7 kPa dual scale 2020D 0 to 20”H2O and 0-5 kPa dual scale 2025 0 to 25”H2O 2030 0 to 30”H2O 2040 0 to 40”H2O 2050 0 to 50”H2O 2060 0 to 60”H2O 2080 0 to 80”H2O 2100 0 to 100”H2O 2150 0 to 150”H2O Zero Centre Ranges 2300-00 0.125-0-0.125”H2O 2300-0 0.25-0-0.25”H2O 2301 0.5-0-0.5”H2O 2302 1-0-1”H2O 2304 2-0-2”H2O 2310 5-0-5”H2O 2320 10-0-10”H2O 2330 15-0-15”H2O Air Velocity Ranges (for use with a Pitot Tube) 2000-00AV 0-0.25" w.c. & 0-2000 fpm 2000-0AV 0-0.5" w.c. & 0-2800 fpm 2001AV 0-1" w.c. & 0-4000 fpm 2002AV 0-2" w.c. & 0-5600 fpm 2005AV 0-5" w.c. & 0-8800 fpm 2010AV 0-10" w.c. & 0-12500 fpm 2015AV 0-15" w.c. & 0-15500 fpm 2020AV 0-20" w.c. & 0-17500 fpm 2025AV 0-25" w.c. & 0-20000 fpm Options: -ASF Adjustable Signal Flag -BUNA Buna-N diaphragm & o-rings (required for Natural Gas Service) -CB Chrome Bezel -HP High static pressure (80 PSI) -IC Impregnated Case (required for Natural Gas Service) -LT Low Temperature Option -MP Medium static pressure (35 PSI) -VIT Fluoroelastomer diaphragm & o-rings Magnehelic® and Dwyer® are registered trademarks of Dwyer Instruments, Inc.
A605 - Air Filter Accessory Kit Comes with 2 static pressure sensors, 2 vent valve, 2 - 6’ lengths of aluminum tubing, surface mounting plate and mounting screws.
-ASF - Adjustable Signal Flag.
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