Description

Series 2000 Magnehelic® Differential Pressure Gages

Indicate Positive, Negative or Differential, Accurate within 1%

 

• No Power Required
• Low Cost
• Used in Isolation/ Hospital Environments and Temporary Units (no power required)

Select the Series 2000 Magnehelic® Gage for a versatile low differential pressure gage with a wide choice of 81 models and 27 options to choose from. Using Dwyer’s simple, frictionless Magnehelic® gage movement, it quickly indicates air or noncorrosive gas pressures–either positive, negative (vacuum) or differential. The design resists shock, vibration, over-pressures and is weatherproof to IP67. Select the -HA High Accuracy Magnehelic® Gage option for an accuracy within 1% of full scale, located below in the Product Configurator. Also included with the –HA option at no extra cost are a mirrored scale overlay and a 6 point calibration certificate.

NIST CALIBRATION available in Product Configurator.

Note: May be used with Hydrogen. Order a Buna-N diaphragm. Pressures must be less than 35 psi.

 

Product Applications

• Filter Monitoring
• Air Velocity with Dwyer Pitot Tube
• Blower Vacuum Monitoring
• Fan Pressure Indication
• Duct, Room or Building Pressures
• Clean Room Positive Pressure Indication

 

Features

• Easy to read gage through undistorted plastic face permits viewing from far away
• Patented design provides quick response to pressure changes means no delay in assessing critical situations
• Durable and rugged housing and high-quality components combine to provide longservice life and minimized down-time
• High accuracy option is twice as accurate as the standard Magnehelic® gage.
• Bezel provides flange for flush mounting in panel.
• Clear plastic face is highly resistant to breakage. Provides undistorted viewing of pointer and scale.
• Precision litho-printed scale is accurate and easy to read.
• Red tipped pointer of heat treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft.
• Pointer stops of molded rubber prevent pointer over-travel without damage.
• “Wishbone” assembly provides mounting for helix, helix bearings and pointer shaft.
• Jeweled bearings are shock-resistant mounted; provide virtually friction-free motion for helix. Motion damped with high viscosity silicone fluid.
• Zero adjustment screw is conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness.
• Helix is precision made from an alloy of high magnetic permeability. Mounted in jeweled bearings, it turns freely, following the magnetic field to move the pointer across the scale.
• Calibrated range spring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to pressure on diaphragm. Live length adjustable for calibration.
• Silicone rubber diaphragm with integrally molded O-ring is supported by front and rear plates. It is locked and sealed in position with a sealing plate and retaining ring. Diaphragm motion is restricted to prevent damage due to overpressures.
• Die cast aluminum case is precision made and iridite-dipped to withstand 168 hour salt spray corrosion test. Exterior finished in baked dark gray hammerloid. One case size is used for all standard pressure options, and for both surface and flush mounting.
• OVERPRESSURE PROTECTION
  Blowout plug is comprised of a rubber plug on the rear which functions as a relief valve by unseating and venting the gage interior when over pressure reaches approximately 25 psig (1.7 bar). To provide a free path for pressure relief, there are four spacer pads which maintain 0.023″ clearance when gage is surface mounted. Do not obstruct the gap created by these pads. The blowout plug is not used on models above 180″ of water pressure, medium or high pressure models, or on gages which require an elastomer other than silicone for the diaphragm. The blowout plug should not be used as a system overpressure control. High supply pressures may still cause the gage to fail due to over pressurization, resulting in property damage or serious injury. Good engineering practices should be utilized to prevent your system from exceeding the ratings of any component.
• O-ring seal for cover assures pressure integrity of case.
• Samarium Cobalt magnet mounted at one end of range spring rotates helix without mechanical linkages.

 

 

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% (-HA model ±1) of FS (±3% (-HA ±1.5%) on -0, -100PA, -125PA, -10MM and ±4% (-HA ±2%) 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).
• Enclosure Rating: IP67.
• Overpressure: Relief plug opens at approximately 25 psig (1.72 bar), standard gages only. See Overpressure Protection note on Catalog page.
• Temperature Limits: 20 to 140°F (-6.67 to 60°C). -20°F (-28°C) with low temperature option.
• 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 adapterswith screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.)
• Agency Approval: Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). Note: -SP models not RoHS approved.

 

Models & Ordering

 

Range – Inches of Water

Model	Description
2000-0	Differential pressure gage, range 0-0.50″ w.c., minor divisions .01, calibrated for vertical scale position.
2000-00	Differential pressure gage, range 0-0.25″ w.c., minor divisions .005, calibrated for vertical scale position.
2000-00N	Differential pressure gage, range .05-0-.2″ w.c., minor divisions .005, calibrated for vertical scale position.
2001	Differential pressure gage, range 0-1.0″ w.c., minor divisions .02.
2002	Differential pressure gage, range 0-2.0″ w.c., minor divisions .05.
2003	Differential pressure gage, range 0-3.0″ w.c., minor divisions .10.
2004	Differential pressure gage, range 0-4.0″ w.c., minor divisions .10.
2005	Differential pressure gage, range 0-5.0″ w.c., minor divisions .10.
2006	Differential pressure gage, range 0-6.0″ w.c., minor divisions .20.
2008	Differential pressure gage, range 0-8.0″ w.c., minor divisions .20.
2010	Differential pressure gage, range 0-10″ w.c., minor divisions .20.
2015	Differential pressure gage, range 0-15″ w.c., minor divisions .50.
2020	Differential pressure gage, range 0-20″ w.c., minor divisions .50.
2025	Differential pressure gage, range 0-25″ w.c., minor divisions .50.
2030	Differential pressure gage, range 0-30″ w.c., minor divisions 1.0.
2040	Differential pressure gage, range 0-40″ w.c., minor divisions 1.0.
2050	Differential pressure gage, range 0-50″ w.c., minor divisions 1.0.
2060	Differential pressure gage, range 0-60″ w.c., minor divisions 2.0.
2080	Differential pressure gage, range 0-80″ w.c., minor divisions 2.0.
2100	Differential pressure gage, range 0-100″ w.c., minor divisions 2.0.
2150	Differential pressure gage, range 0-150″ w.c., minor divisions 5.0.

 

Range – Inches of Water – Zero Center

Model	Description
2300-0	Differential pressure gage, range 0.25-0-0.25″ w.c., minor divisions .01, calibrated for vertical scale position.
2301	Differential pressure gage, range 0.5-0-0.5″ w.c., minor divisions .02.
2302	Differential pressure gage, range 1-0-1″ w.c., minor divisions .05.
2304	Differential pressure gage, range 2-0-2″ w.c., minor divisions .10.
2310	Differential pressure gage, range 5-0-5″ w.c., minor divisions .20.
2320	Differential pressure gage, range 10-0-10″ w.c., minor divisions .50.
2330	Differential pressure gage, range 15-0-15″ w.c., minor divisions 1.0.

 

Range – PSI

Model	Description
2201	Differential pressure gage, range 0-1 psi, minor divisions .02.
2202	Differential pressure gage, range 0-2 psi, minor divisions .05.
2203	Differential pressure gage, range 0-3 psi, minor divisions .10.
2204	Differential pressure gage, range 0-4 psi, minor divisions .10.
2205	Differential pressure gage, range 0-5 psi, minor divisions .10.
2210	Differential pressure gage, range 0-10 psi, minor divisions .20, MP option standard.
2215	Differential pressure gage, range 0-15 psi, minor divisions .50, MP option standard.
2220	Differential pressure gage, range 0-20 psi, minor divisions .50, MP option standard.
2230	Differential pressure gage, range 0-30 psi, minor divisions 1.0, HP option standard.

 

Dual Scale Air Velocity Units (w.c./Velocity ft/min)

Model	Description
2000-00AV	Differential pressure gage, range 0-0.25″ w.c., velocity 300-2000 FPM, calibrated for vertical scale position.
2000-0AV	Differential pressure gage, range 0-0.50″ w.c., velocity 500-2800 FPM, calibrated for vertical scale position.
2001AV	Differential pressure gage, range 0-1.0″ w.c., velocity 500-4000 FPM.
2002AV	Differential pressure gage, range 0-2.0″ w.c., velocity 1000-5600 FPM.
2010AV	Differential pressure gage, range 0-10″ w.c., velocity 2000-12500 FPM.

 

Range – MM of Water

Model	Description
2000-100MM	Differential pressure gage, range 0-100 mm w.c., minor divisions 2.0.
2000-10MM	Differential pressure gage, range 0-10 mm w.c., minor divisions .20, calibrated for vertical scale position.
2000-150MM	Differential pressure gage, range 0-150 mm w.c.
2000-15MM	Differential pressure gage, range 0-15 mm w.c.
2000-200MM	Differential pressure gage, range 0-200 mm w.c.
2000-250MM	Differential pressure gage, range 0-250 mm w.c.
2000-25MM	Differential pressure gage, range 0-25 mm w.c., minor divisions .50.
2000-300MM	Differential pressure gage, range 0-300 mm w.c.
2000-50MM	Differential pressure gage, range 0-50 mm w.c., minor divisions 1.0.
2000-6MM	Differential pressure gage, range 0-6 mm w.c., minor divisions .20, calibrated for vertical scale position.
2000-80MM	Differential pressure gage, range 0-80 mm w.c., minor divisions 2.0.

 

Range – MM of Water – Zero Center

Model	Description
2300-20MM	Differential pressure gage, range 10-0-10 mm w.c., minor divisions .50, calibrated for vertical scale position.

 

Range – CM of Water

Model	Description
2000-100CM	Differential pressure gage, range 0-100 cm w.c., minor divisions 2.0.
2000-150CM	Differential pressure gage, range 0-150 cm w.c., minor divisions 5.0.
2000-15CM	Differential pressure gage, range 0-15 cm w.c., minor divisions .50.
2000-200CM	Differential pressure gage, range 0-200 cm w.c., minor divisions 5.0.
2000-20CM	Differential pressure gage, range 0-20 cm w.c., minor divisions .50.
2000-250CM	Differential pressure gage, range 0-250 cm w.c., minor divisions 5.0.
2000-25CM	Differential pressure gage, range 0-25 cm w.c., minor divisions .50.
2000-300CM	Differential pressure gage, range 0-300 cm w.c., minor divisions 10.0.
2000-50CM	Differential pressure gage, range 0-50 cm w.c., minor divisions 1.0.
2000-80CM	Differential pressure gage, range 0-80 cm w.c., minor divisions 2.0.

 

Range CM of Water – Zero Center

Model	Description
2300-10CM	Differential pressure gage, range 5-0-5 cm w.c., minor divisions .20.
2300-30CM	Differential pressure gage, range 15-0-15 cm w.c., minor divisions 1.0.
2300-4CM	Differential pressure gage, range 2-0-2 cm w.c., minor divisions .10.

 

Range – Pascals

Model	Description
2000-100PA	Differential pressure gage, range 0-100 Pa, minor divisions 2.0, calibrated for vertical scale position.
2000-125PA	Differential pressure gage, range 0-125 Pa, minor divisions 5.0, calibrated for vertical scale position.
2000-250PA	Differential pressure gage, range 0-250 Pa, minor divisions 5.0.
2000-300PA	Differential pressure gage, range 0-300 Pa, minor divisions 10.0.
2000-30PA	Differential pressure gage, range 0-30 Pa, minor divisions 1.0, calibrated for vertical scale position.
2000-500PA	Differential pressure gage, range 0-500 Pa, minor divisions 10.0.
2000-60PA	Differential pressure gage, range 0-60 Pa, minor divisions 1.0, calibrated for vertical scale position.
2000-750PA	Differential pressure gage, range 0-750 Pa, minor divisions 25.0.

 

Range – Pascals – Zero Center

Model	Description
2300-100PA	Differential pressure gage, range 50-0-50 Pa, minor divisions 2.0, calibrated for vertical scale position.
2300-120PA	Differential pressure gage, range 60-0-60 Pa, minor divisions 2.0.
2300-250PA	Differential pressure gage, range 125-0-125 Pa, minor divisions 5.0.
2300-500PA	Differential pressure gage, range 250-0-250 Pa, minor divisions 10.0.
2300-60PA	Differential pressure gage, range 30-0-30 Pa, minor divisions 1.0, calibrated for vertical scale position.

 

Range – Kilopascals

Model	Description
2000-1.5KPA	Differential pressure gage, range 0-1.5 kPa, minor divisions .05.
2000-10KPA	Differential pressure gage, range 0-10 kPa, minor divisions .20.
2000-15KPA	Differential pressure gage, range 0-15 kPa, minor divisions .50.
2000-1KPA	Differential pressure gage, range 0-1 kPa, minor divisions .02.
2000-20KPA	Differential pressure gage, range 0-20 kPa, minor divisions .50.
2000-25KPA	Differential pressure gage, range 0-25 kPa, minor divisions .50.
2000-2KPA	Differential pressure gage, range 0-2 kPa, minor divisions .05.
2000-30KPA	Differential pressure gage, range 0-30 kPa, minor divisions 1.0.
2000-3KPA	Differential pressure gage, range 0-3 kPa, minor divisions .10.
2000-4KPA	Differential pressure gage, range 0-4 kPa, minor divisions .10.
2000-5KPA	Differential pressure gage, range 0-5 kPa, minor divisions .10.
2000-8KPA	Differential pressure gage, range 0-8 kPa, minor divisions .20.

 

Range – Kilopascals – Zero Center

Model	Description
2300-1KPA	Differential pressure gage, range 0.5-0-0.5 kPa, minor divisions .02.
2300-3KPA	Differential pressure gage, range 1.5-0-1.5 kPa, minor divisions .10.

 

Dual Scale – English/Metric

Model	Description
2000-0D	Differential pressure gage, range 0-0.5″ w.c. & 0-125 Pa.
2001D	Differential pressure gage, range 0-1.0″ w.c. & 0-250 Pa.
2002D	Differential pressure gage, range 0-2.0″ w.c. & 0-500 Pa.
2003D	Differential pressure gage, range 0-3.0″ w.c. & 0-750 Pa.
2004D	Differential pressure gage, range 0-4.0″ w.c. & 0-1.0 kPa.
2006D	Differential pressure gage, range 0-6.0″ w.c. & 0-1.5 kPa.
2008D	Differential pressure gage, range 0-8.0″ w.c. & 0-2.0 kPa.
2010D	Differential pressure gage, range 0-10″ w.c. & 0-2.5 kPa.
2015D	Differential pressure gage, range 0-15″ w.c. & 0-3.7 kPa.

 

2000-SP Set Point Indicator

Model	Description
2000-0-SP	Differential pressure gage, range 0-0.50″ w.c., with set point indicator.
2001-SP	Differential pressure gage, range 0-1″ w.c., with set point indicator.
2002-SP	Differential pressure gage, range 0-2″ w.c., with set point indicator.
2005-SP	Differential pressure gage, range 0-5″ w.c., with set point indicator.
2010-SP	Differential pressure gage, range 0-10″ w.c., with set point indicator.