Model 2-5001

Series 2-5000 Minihelic® II Differential Pressure Gage

Series 4000 Capsuhelic® Differential Pressure Gage

Series 4000 Capsuhelic® Differential Pressure Gage

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 is 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.

Please see Series AT-2000 for ATEX approved.

California Residents: Click Here for Proposition 65 WARNING.

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
Starting at $75.35
Filter By
Grouped product items
Model Description Availability* Qty Price
2000-0 Differential pressure gage, range 0-0.50" w.c., minor divisions .01, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$75.35
2000-0AV Differential pressure gage, range 0-0.50" w.c., velocity 500-2800 FPM, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$126.85
2000-0D Differential pressure gage, range 0-0.5" w.c. & 0-125 Pa, calibrated for vertical scale position, ±3% accuracy. Less Than 1 Week*
$84.90
2000-0-SP Differential pressure gage, range 0-0.50" w.c., with set point indicator, ±3% accuracy. Less Than 1 Week*
$267.30
2000-00 Differential pressure gage, range 0-0.25" w.c., minor divisions .005, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$87.20
2000-00N Differential pressure gage, range .05-0-.2" w.c., minor divisions .005, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$96.75
2000-1CM Differential pressure gage, range 0-1 cm. Less Than 1 Week*
$75.35
2000-2CM Differential pressure gage, range 0-2 cm. Less Than 1 Week*
$126.85
2000-5CM Differential pressure gage, range 0-5 cm. Less Than 1 Week*
$126.85
2000-8CM Differential pressure gage, range 0-8 cm. Less Than 1 Week*
$126.85
2000-10CM Differential pressure gage, range 0-10 cm. Less Than 1 Week*
$126.85
2000-15CM Differential pressure gage, range 0-15 cm w.c., minor divisions .50. Less Than 1 Week*
$75.35
2000-20CM Differential pressure gage, range 0-20 cm w.c., minor divisions .50. 1-3 days*
$75.35
2000-25CM Differential pressure gage, range 0-25 cm w.c., minor divisions .50. 1-3 days*
$75.35
2000-30CM Differential pressure gage, range 0-30 cm. Less Than 1 Week*
$75.35
2000-40CM Differential pressure gage, range 0-40 cm. Less Than 1 Week*
$75.35
2000-50CM Differential pressure gage, range 0-50 cm w.c., minor divisions 1.0. 1-3 days*
$75.35
2000-80CM Differential pressure gage, range 0-80 cm w.c., minor divisions 2.0. Less Than 1 Week*
$75.35
2000-100CM Differential pressure gage, range 0-100 cm w.c., minor divisions 2.0. 1-3 days*
$75.35
2000-150CM Differential pressure gage, range 0-150 cm w.c., minor divisions 5.0. Less Than 1 Week*
$84.90
2000-200CM Differential pressure gage, range 0-200 cm w.c., minor divisions 5.0. Less Than 1 Week*
$84.90
2000-250CM Differential pressure gage, range 0-250 cm w.c., minor divisions 5.0. Less Than 1 Week*
$84.90
2000-300CM Differential pressure gage, range 0-300 cm w.c., minor divisions 10.0. Less Than 1 Week*
$84.90
2000-6MM Differential pressure gage, range 0-6 mm w.c., minor divisions .20, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$87.20
2000-10MM Differential pressure gage, range 0-10 mm w.c., minor divisions .20, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$75.35
2000-15MM Differential pressure gage, range 0-15 mm w.c. Less Than 1 Week*
$75.35
2000-20MM Differential pressure gage, range 0-20 mm. Less Than 1 Week*
$126.85
2000-25MM Differential pressure gage, range 0-25 mm w.c., minor divisions .50. 1-3 days*
$75.35
2000-30MM Differential pressure gage, range 0-30 mm. Less Than 1 Week*
$75.35
2000-40MM Differential pressure gage, range 0-40 mm. Less Than 1 Week*
$126.85
2000-50MM Differential pressure gage, range 0-50 mm w.c., minor divisions 1.0. 1-3 days*
$75.35
2000-80MM Differential pressure gage, range 0-80 mm w.c., minor divisions 2.0. 1-3 days*
$75.35
2000-100MM Differential pressure gage, range 0-100 mm w.c., minor divisions 2.0. 1-3 days*
$75.35
2000-150MM Differential pressure gage, range 0-150 mm w.c. 1-3 days*
$75.35
2000-200MM Differential pressure gage, range 0-200 mm w.c. 1-3 days*
$75.35
2000-250MM Differential pressure gage, range 0-250 mm w.c. 1-3 days*
$75.35
2000-300MM Differential pressure gage, range 0-300 mm w.c. 1-3 days*
$75.35
2000-30PA Differential pressure gage, range 0-30 Pa, minor divisions 1.0, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$87.20
2000-60PA Differential pressure gage, range 0-60 Pa, minor divisions 1.0, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$87.20
2000-60PA-ASF Differential pressure gage, range 0-60 Pa, minor divisions 1.0, calibrated for vertical scale position, ±4% accuracy with adjustable signal flag. Less Than 1 Week*
$105.50
2000-100PA Differential pressure gage, range 0-100 Pa, minor divisions 2.0, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$75.35
2000-125PA Differential pressure gage, range 0-125 Pa, minor divisions 5.0, calibrated for vertical scale position, 3% accuracy. 1-3 days*
$75.35
2000-250PA Differential pressure gage, range 0-250 Pa, minor divisions 5.0. 1-3 days*
$75.35
2000-250PA-ASF Differential pressure gage, range 0-250 Pa with adjustable signal flag. Less Than 1 Week*
$93.65
2000-300PA Differential pressure gage, range 0-300 Pa, minor divisions 10.0. 1-3 days*
$75.35
2000-500PA Differential pressure gage, range 0-500 Pa, minor divisions 10.0. 1-3 days*
$75.35
2000-500PA-ASF Differential pressure gage, range 0-500 Pa with adjustable signal flag. Less Than 1 Week*
$93.65
2000-750PA Differential pressure gage, range 0-750 Pa, minor divisions 25.0. 1-3 days*
$75.35
2000-1000PA Differential pressure gage, range 0-1000 Pa. 1-3 days*
$75.35
2000-1KPA Differential pressure gage, range 0-1 kPa, minor divisions .02. 1-3 days*
$75.35
2000-1KPA-ASF Differential pressure gage, range 0-1 kPa, minor divisions .02, with adjustable signal flag. 4-5 Weeks*
$93.65
2000-1.5KPA Differential pressure gage, range 0-1.5 kPa, minor divisions .05. 1-3 days*
$75.35
2000-2KPA Differential pressure gage, range 0-2 kPa, minor divisions .05. 1-3 days*
$75.35
2000-3KPA Differential pressure gage, range 0-3 kPa, minor divisions .10. 1-3 days*
$75.35
2000-4KPA Differential pressure gage, range 0-4 kPa, minor divisions .10. 1-3 days*
$75.35
2000-5KPA-ASF Differential pressure gage, range 0-5 kPa with adjustable signal flag. Less Than 1 Week*
$93.65
2000-5KPA Differential pressure gage, range 0-5 kPa, minor divisions .10. 1-3 days*
$75.35
2000-8KPA Differential pressure gage, range 0-8 kPa, minor divisions .20. Less Than 1 Week*
$75.35
2000-10KPA Differential pressure gage, range 0-10 kPa, minor divisions .20. 1-3 days*
$75.35
2000-15KPA Differential pressure gage, range 0-15 kPa, minor divisions .50. Less Than 1 Week*
$75.35
2000-20KPA Differential pressure gage, range 0-20 kPa, minor divisions .50. 1-3 days*
$75.35
2000-25KPA Differential pressure gage, range 0-25 kPa, minor divisions .50. Less Than 1 Week*
$75.35
2000-30KPA Differential pressure gage, range 0-30 kPa, minor divisions 1.0. 1-3 days*
$75.35
2001-LT Differential pressure gage, range 0-1.0" w.c., minor divisions .02. with low temperature option. 1-3 days*
$97.70
2002-LT Differential pressure gage, range 0-2.0" w.c., minor divisions .05 with low temperature option. 1-3 days*
$97.70
2003-LT Differential pressure gage, range 0-3.0" w.c., minor divisions .10 with low temperature option. 1-3 days*
$97.70
2010-LT Differential pressure gage, range 0-10" w.c., minor divisions .20 with low temperature option. 1-3 days*
$97.70
2015-LT Differential pressure gage, range 0-15" w.c., minor divisions .50 with low temperature option. 1-3 days*
$97.70
2000-0-ASF Differential pressure gage, range 0-0.50" w.c., minor divisions .01, calibrated for vertical scale position, with adjustable signal flag, ±3% accuracy. 1-3 days*
$93.65
2001-ASF Differential pressure gage, range 0-1.0" w.c., minor divisions .02. with adjustable signal flag. 1-3 days*
$93.65
2002-ASF Differential pressure gage, range 0-2.0" w.c., minor divisions .05 with adjustable signal flag. 1-3 days*
$93.65
2003-ASF Differential pressure gage, range 0-3.0" w.c., minor divisions .10 with adjustable signal flag. 1-3 days*
$93.65
2005-ASF Differential pressure gage, range 0-5.0" w.c., minor divisions .10 with adjustable signal flag. 1-3 days*
$93.65
2008-ASF Differential pressure gage, range 0-8.0" w.c., minor divisions .20 with adjustable signal flag. Less Than 1 Week*
$93.65
2010-ASF Differential pressure gage, range 0-10" w.c., minor divisions .20 with adjustable signal flag. 1-3 days*
$93.65
2000-100MBAR Differential pressure gage, range 0-100 mbar. 1-3 days*
$126.85
2001 Differential pressure gage, range 0-1.0" w.c., minor divisions .02. 1-3 days*
$75.35
2001AV Differential pressure gage, range 0-1.0" w.c., velocity 500-4000 FPM. 1-3 days*
$84.90
2001D Differential pressure gage, range 0-1.0" w.c. & 0-250 Pa. 1-3 days*
$84.90
2001-SP Differential pressure gage, range 0-1" w.c., with set point indicator. Less Than 1 Week*
$267.30
2002 Differential pressure gage, range 0-2.0" w.c., minor divisions .05. 1-3 days*
$75.35
2002AV Differential pressure gage, range 0-2.0" w.c., velocity 1000-5600 FPM. 1-3 days*
$84.90
2002D Differential pressure gage, range 0-2.0" w.c. & 0-500 Pa. 1-3 days*
$84.90
2002-SP Differential pressure gage, range 0-2" w.c., with set point indicator. Less Than 1 Week*
$267.30
2003 Differential pressure gage, range 0-3.0" w.c., minor divisions .10. 1-3 days*
$75.35
2003D Differential pressure gage, range 0-3.0" w.c. & 0-750 Pa. 1-3 days*
$84.90
2004 Differential pressure gage, range 0-4.0" w.c., minor divisions .10. 1-3 days*
$75.35
2004D Differential pressure gage, range 0-4.0" w.c. & 0-1.0 kPa. Less Than 1 Week*
$84.90
2005 Differential pressure gage, range 0-5.0" w.c., minor divisions .10. 1-3 days*
$75.35
2005D Differential pressure gage, range 0-5.0" w.c. & 0-1.25 kPa. Less Than 1 Week*
$84.90
2005-SP Differential pressure gage, range 0-5" w.c., with set point indicator. Less Than 1 Week*
$267.30
2006 Differential pressure gage, range 0-6.0" w.c., minor divisions .20. 1-3 days*
$75.35
2006D Differential pressure gage, range 0-6.0" w.c. & 0-1.5 kPa. 1-3 days*
$84.90
2008 Differential pressure gage, range 0-8.0" w.c., minor divisions .20. 1-3 days*
$75.35
2008D Differential pressure gage, range 0-8.0" w.c. & 0-2.0 kPa. Less Than 1 Week*
$84.90
2010 Differential pressure gage, range 0-10" w.c., minor divisions .20. 1-3 days*
$75.35
2010AV Differential pressure gage, range 0-10" w.c., velocity 2000-12500 FPM. 1-3 days*
$84.90
2010D Differential pressure gage, range 0-10" w.c. & 0-2.5 kPa. 1-3 days*
$84.90
2010-SP Differential pressure gage, range 0-10" w.c., with set point indicator. Less Than 1 Week*
$267.30
2015 Differential pressure gage, range 0-15" w.c., minor divisions .50. 1-3 days*
$75.35
2015D Differential pressure gage, range 0-15" w.c. & 0-3.7 kPa. 1-3 days*
$84.90
2020 Differential pressure gage, range 0-20" w.c., minor divisions .50. 1-3 days*
$75.35
2025 Differential pressure gage, range 0-25" w.c., minor divisions .50. 1-3 days*
$75.35
2030 Differential pressure gage, range 0-30" w.c., minor divisions 1.0. 1-3 days*
$75.35
2040 Differential pressure gage, range 0-40" w.c., minor divisions 1.0. 1-3 days*
$75.35
2050 Differential pressure gage, range 0-50" w.c., minor divisions 1.0. 1-3 days*
$75.35
2060 Differential pressure gage, range 0-60" w.c., minor divisions 2.0. 1-3 days*
$75.35
2080 Differential pressure gage, range 0-80" w.c., minor divisions 2.0. 1-3 days*
$75.35
2100 Differential pressure gage, range 0-100" w.c., minor divisions 2.0. 1-3 days*
$75.35
2150 Differential pressure gage, range 0-150" w.c., minor divisions 5.0. 1-3 days*
$75.35
2201 Differential pressure gage, range 0-1 psi, minor divisions .02. Less Than 1 Week*
$84.90
2202 Differential pressure gage, range 0-2 psi, minor divisions .05. Less Than 1 Week*
$84.90
2203 Differential pressure gage, range 0-3 psi, minor divisions .10. Less Than 1 Week*
$84.90
2204 Differential pressure gage, range 0-4 psi, minor divisions .10. Less Than 1 Week*
$84.90
2205 Differential pressure gage, range 0-5 psi, minor divisions .10. 1-3 days*
$84.90
2210 Differential pressure gage, range 0-10 psi, minor divisions .20, MP option standard. 1-3 days*
$207.60
2215 Differential pressure gage, range 0-15 psi, minor divisions .50, MP option standard. 1-3 days*
$207.60
2220 Differential pressure gage, range 0-20 psi, minor divisions .50, MP option standard. Less Than 1 Week*
$207.60
2230 Differential pressure gage, range 0-30 psi, minor divisions 1.0, HP option standard. 1-3 days*
$377.50
2300-0 Differential pressure gage, range 0.25-0-0.25" w.c., minor divisions .01, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$88.75
2300-00 Differential pressure gage, zero center range 0.125-0-0.125" w.c., ±4% accuracy. 1-3 days*
$88.75
2301 Differential pressure gage, range 0.5-0-0.5" w.c., minor divisions .02. 1-3 days*
$88.75
2302 Differential pressure gage, range 1-0-1" w.c., minor divisions .05. 1-3 days*
$88.75
2304 Differential pressure gage, range 2-0-2" w.c., minor divisions .10. 1-3 days*
$88.75
2310 Differential pressure gage, range 5-0-5" w.c., minor divisions .20. 1-3 days*
$88.75
2320 Differential pressure gage, range 10-0-10" w.c., minor divisions .50. 1-3 days*
$88.75
2330 Differential pressure gage, range 15-0-15" w.c., minor divisions 1.0. 1-3 days*
$88.75
2300-4CM Differential pressure gage, range 2-0-2 cm w.c., minor divisions .10. Less Than 1 Week*
$98.30
2300-10CM Differential pressure gage, range 5-0-5 cm w.c., minor divisions .20. Less Than 1 Week*
$98.30
2300-20CM Differential pressure gage, zero center range 10-0-10 cm w.c. Less Than 1 Week*
$140.25
2300-30CM Differential pressure gage, range 15-0-15 cm w.c., minor divisions 1.0. Less Than 1 Week*
$98.30
2300-10MM Differential pressure gage, zero center range 5-0-5 mm w.c., calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$88.75
2300-20MM Differential pressure gage, range 10-0-10 mm w.c., minor divisions .50, calibrated for vertical scale position, ±3% accuracy. 1-3 days*
$88.75
2300-30MM Differential pressure gage, zero center range 15-0-15 mm w.c. Less Than 1 Week*
$140.25
2300-1KPA Differential pressure gage, range 0.5-0-0.5 kPa, minor divisions .02. 1-3 days*
$88.75
2300-3KPA Differential pressure gage, range 1.5-0-1.5 kPa, minor divisions .10. 1-3 days*
$88.75
2300-60PA Differential pressure gage, range 30-0-30 Pa, minor divisions 1.0, calibrated for vertical scale position, ±4% accuracy. 1-3 days*
$88.75
2300-100PA Differential pressure gage, range 50-0-50 Pa, minor divisions 2.0, calibrated for vertical scale position, 3% accuracy. 1-3 days*
$88.75
2300-120PA Differential pressure gage, range 60-0-60 Pa, minor divisions 2.0, calibrated for vertical scale position, 3% accuracy. 1-3 days*
$88.75
2300-250PA Differential pressure gage, range 125-0-125 Pa, minor divisions 5.0. 1-3 days*
$88.75
2300-500PA Differential pressure gage, range 250-0-250 Pa, minor divisions 10.0. 1-3 days*
$88.75
2300-1000PA Differential pressure gage, zero center range 500-0-500 Pa. 1-3 days*
$88.75

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 adapters with screws. (Mounting and snap ring retainer substituted for three adapters in MP & HP gage accessories.)
Note: For applications with high cycle rate within gage total pressure rating, next higher rating is recommended. See Medium and High pressure options.

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.

Options

  • ASF Adjustable Signal Flag
  • HP High Pressure Option
  • LT Low Temperatures to -20°F
  • MP Med. Pressure Option
  • SP Setpoint Indicator
  • Scale Overlays Red, Green, Yellow, Mirrored or Combination, Specify Locations
  • Mounting and Orientation
    A single case size is used for most models of Magnehelic® gages. They can be flush or surface mounted with standard hardware supplied. Standard gages are calibrated in the vertical position, and should be used in that position for maximum stated accuracy. Ranges above 17.5 in w.c. may be used at any angle, and should stay within specified accuracy, by simply re-zeroing. Ranges below 17.5 in w.c. should be ordered using the –TA tilt angle option with the angle specified. These characteristics make Magnehelic® gages ideal for both stationary and portable applications. A 4-9/16" hole is required for flush panel mounting. Complete mounting and connection fittings, plus instructions, are furnished with each instrument.

  • AHU1 Furnished with attached surface mounting plate
  • AHU2 Furnished with attached surface mounting plate and including A-481 installer kit (2 plastic static pressure tips and 7´of PVC tubing)
  • CB Chrome bezel option: A chrome plated aluminum bezel for an aesthetically pleasing finish when mounting on metal surfaces such as control panels.
  • FC Factory calibration certificate
  • NIST NIST traceable calibration certificate
  • SB Stainless steel bezel option: 304 stainless steel electro polished Ra 16 finished bezel
  • SS Corrosion resistant brushed 304 stainless steel bezel

Model Chart

EXAMPLE

2000-00N ASF Series 2000-00N-ASF Magnehelic® Differential Pressure Gage, range .05-0-.20" w.c., with adjustable signal flag.
RANGE 2000-00N
2000-00
2000-0
2001
2002
2003
2004
2005
2006
2008
2010
2012
2015
2020
2025
2030
2040
2045
2050
2060
2080
2100
2120
2150
2160
2180
2200
2250
2300
2400
2500
2300-00
2300-0
2301
2302
2304
2305
2306
2308
2310
2312
2316
2320
2330
2340
2350
2360
2380
23100
23150
2000-1FTWC
2000-1.5FTWC
2000-2FTWC
2000-2.5FTWC
2000-3FTWC
2000-4FTWC
2000-5FTWC
2000-6FTWC
2000-8FTWC
2000-10FTWC
2000-12FTWC
2000-12.5FTWC
2000-15FTWC
2000-20FTWC
2000-25FTWC
2000-30FTWC
2000-35FTWC
2000-40FTWC
2000-50FTWC
2000-60FTWC
2000-00D
2000-0D
2001D
2002D
2003D
2004D
2005D
2006D
2008D
2010D
2015D
2020D
2025D
2030D
2040D
2050D
2060D
2100D
2200D
2310D
2000-00AV
2000-0AV
2001AV
2002AV
2005AV
2010AV
2015AV
2020AV
2025AV
2000-00MV
2000-0MV
2001MV
2002MV
2005MV
2008MV
2015MV
2020MV
2024MV
2201
2202
2203
2204
2205
2206
2208
2210
2215
2220
2230
2000-0.25HG
2000-05HG
2000-1HG
2000-1.5HG
2000-2HG
2000-3HG
2000-4HG
2000-5HG
2000-6HG
2000-7HG
2000-8HG
2000-9HG
2000-10HG
2000-11HG
2000-12HG
2000-15HG
2000-16HG
2000-20HG
2000-25HG
2000-30HG
2000-40HG
2000-50HG
2000-60HG
2300-0.5HG
2300-1HG
2300-2HG
2300-10HG
2300-30HG
2000-0.5MMHG
2000-1MMHG
2000-2MMHG
2000-4MMHG
2000-5MMHG
2000-6MMHG
2000-7MMHG
2000-8MMHG
2000-9MMHG
2000-10MMHG
2000-11MMHG
2000-12MMHG
2000-15MMHG
2000-20MMHG
2000-25MMHG
2000-30MMHG
2000-35MMHG
2000-40MMHG
2000-50MMHG
2000-60MMHG
2000-80MMHG
2000-100MMHG
2000-150MMHG
2000-200MMHG
2000-250MMHG
2000-300MMHG
2000-350MMHG
2000-400MMHG
2300-60MMHG
2000-6MM
2000-8MM
2000-10MM
2000-12MM
2000-15MM
2000-20MM
2000-25MM
2000-30MM
2000-35MM
2000-40MM
2000-50MM
2000-60MM
2000-75MM
2000-80MM
2000-100MM
2000-125MM
2000-150MM
2000-200MM
2000-250MM
2000-300MM
2000-350MM
2000-375MM
2000-400MM
2000-500MM
2000-600MM
2000-700MM
2000-750MM
2000-800MM
2000-1000MM
2000-1200MM
2000-1500MM
2000-1600MM
2000-1800MM
2000-2000MM
2000-3000MM
2000-4000MM
2000-5000MM
2300-6MM
2300-10MM
2300-12MM
2300-14MM
2300-20MM
2300-30MM
2300-40MM
2300-50MM
2300-60MM
2300-80MM
2300-100MM
2300-150MM
2300-160MM
2300-200MM
2300-250MM
2300-300MM
2300-320MM
2300-400MM
2300-450MM
2300-500MM
2300-600MM
2300-700MM
2300-750MM
2300-800MM
2300-1000MM
2000-1.5CM
2000-2CM
2000-2.5CM
2000-3CM
2000-4CM
2000-5CM
2000-6CM
2000-8CM
2000-10CM
2000-15CM
2000-20CM
2000-25CM
2000-30CM
2000-35CM
2000-40CM
2000-50CM
2000-60CM
2000-80CM
2000-100CM
2000-125CM
2000-150CM
2000-200CM
2000-250CM
2000-300CM
2000-350CM
2000-400CM
2000-500CM
2000-600CM
2000-700CM
2000-1000CM
2300-2CM
2300-3CM
2300-4CM
2300-5CM
2300-10CM
2300-20CM
2300-30CM
2300-40CM
2300-50CM
2300-60CM
2300-80CM
2300-100CM
2000-60NPA
2000-30PA
2000-60PA
2000-100PA
2000-125PA
2000-150PA
2000-200PA
2000-250PA
2000-300PA
2000-350PA
2000-400PA
2000-500PA
2000-700PA
2000-750PA
2000-800PA
2000-1000PA
2000-100x10PA
2000-1250PA
2000-125X10PA
2000-1500PA
2000-150X10PA
2000-2000PA
2000-200X10PA
2000-2500PA
2000-250X10PA
2000-3000PA
2000-300X10PA
2000-4500PA
2000-450X10PA
2000-5000PA
2000-500X10PA
2000-6000PA
2000-600X10PA
2000-8000PA
2000-800X10PA
2300-60PA
2300-80PA
2300-100PA
2300-120PA
2300-200PA
2300-250PA
2300-300PA
2300-400PA
2300-500PA
2300-600PA
2300-1000PA
2300-1200PA
2300-1400PA
2300-2000PA
2300-200X10PA
2300-3000PA
2300-300X10PA
2300-5000PA
2300-500X10PA
2300-6000PA
2300-600X10PA
2000-0.1KPA
2000-0.2KPA
2000-0.3KPA
2000-0.5KPA
2000-1KPA
2000-1.25KPA
2000-1.5KPA
2000-2KPA
2000-2.5KPA
2000-3KPA
2000-3.5KPA
2000-4KPA
2000-5KPA
2000-6KPA
2000-8KPA
2000-10KPA
2000-12KPA
2000-12.5KPA
2000-15KPA
2000-20KPA
2000-25KPA
2000-30KPA
2000-35KPA
2000-40KPA
2000-50KPA
2000-60KPA
2000-70KPA
2000-75KPA
2000-80KPA
2000-100KPA
2000-140KPA
2000-170KPA
2000-200KPA
2300-0.4KPA
2300-1KPA
2300-2KPA
2300-2.5KPA
2300-3KPA
2300-4KPA
2300-5KPA
2300-6KPA
2300-7KPA
2300-7.5KPA
2300-8KPA
2300-10KPA
2300-12KPA
2300-16KPA
2300-20KPA
2000-1MBAR
2000-1.5MBAR
2000-2MBAR
2000-2.5MBAR
2000-3MBAR
2000-4MBAR
2000-5MBAR
2000-6MBAR
2000-8MBAR
2000-10MBAR
2000-12MBAR
2000-15MBAR
2000-20MBAR
2000-25MBAR
2000-30MBAR
2000-35MBAR
2000-40MBAR
2000-50MBAR
2000-60MBAR
2000-75MBAR
2000-80MBAR
2000-100MBAR
2000-125MBAR
2000-150MBAR
2000-200MBAR
2000-250MBAR
2000-300MBAR
2000-350MBAR
2000-400MBAR
2000-500MBAR
2000-600MBAR
2000-700MBAR
2000-800MBAR
2000-1000MBAR
2300-2MBAR
2300-3MBAR
2300-4MBAR
2300-5MBAR
2300-6MBAR
2300-10MBAR
2300-20MBAR
2300-24MBAR
2300-30MBAR
2300-40MBAR
2300-50MBAR
2300-60MBAR
2300-70MBAR
2300-80MBAR
2300-100MBAR
2300-500MBAR
2000-0.5ZPSI
2000-1ZPSI
2000-2ZPSI
2000-3ZPSI
2000-4ZPSI
2000-6ZPSI
2000-8ZPSI
2000-10ZPSI
2000-15ZPSI
2000-16ZPSI
2000-20ZPSI
2000-30ZPSI
2000-32ZPSI
2000-40ZPSI
2000-50ZPSI
2000-80ZPSI
2000-100ZPSI
2300-2ZPSI
2000-0.2BAR
2000-0.5BAR
2000-1BAR
2000-1.5BAR
2000-2BAR
2000-0.5KG
2000-1KG
2000-1.5KG
2000-2KG
2000-10VF1
2000-10VF2
2000-10VF3
2000-10VF4
2000-10VF5
2000-20VF1
2000-20VF2
2000-20VF3
2000-20VF4
2000-20VF5
2000-40VF1
2000-40VF2
2000-40VF3
2000-40VF4
2000-40VF5
  05-0-.20" w.c.
0-.25" w.c.
0-.5" w.c.
0-1" w.c.
0-2" w.c.
0-3" w.c.
0-4" w.c.
0-5" w.c.
0-6" w.c.
0-8" w.c.
0-10" w.c.
0-12" w.c.
0-15" w.c.
0-20" w.c.
0-25" w.c.
0-30" w.c.
0-40" w.c.
0-45" w.c.
0-50" w.c.
0-60" w.c.
0-80" w.c.
0-100" w.c.
0-120" w.c.
0-150" w.c.
0-160" w.c.
0-180" w.c.
0-200" w.c.
0-250" w.c.
0-300" w.c.
0-400" w.c.
0-500" w.c.
0.125-0-0.125" w.c.
0.25-0-0.25" w.c.
0.5-0-0.5" w.c.
1-0-1" w.c.
2-0-2" w.c.
2.5-0-2.5" w.c.
3-0-3" w.c.
4-0-4" w.c.
5-0-5" w.c.
6-0-6" w.c.
8-0-8" w.c.
10-0-10" w.c.
15-0-15" w.c.
20-0-20" w.c.
25-0-25" w.c.
30-0-30" w.c.
40-0-40" w.c.
50-0-50" w.c.
75-0-75" w.c.
0-1 ft w.c.
0-1.5 ft w.c.
0-2 ft w.c.
0-2.5 ft w.c.
0-3 ft w.c.
0-4 ft w.c.
0-5 ft w.c.
0-6 ft w.c.
0-8 ft w.c.
0-10 ft w.c.
0-12 ft w.c.
0-12.5 ft w.c.
0-15 ft w.c.
0-20 ft w.c.
0-25 ft w.c.
0-30 ft w.c.
0-35 ft w.c.
0-40 ft w.c.
0-50 ft w.c.
0-60 ft w.c.
0-0.25" w.c. & 0-62 Pa
0-0.5" w.c. & 0-125 Pa
0-1" w.c. & 0-250 Pa
0-2" w.c. & 0-500 Pa
0-3" w.c. & 0-750 Pa
0-4" w.c. & 0-1 kPa
0-5" w.c. & 0-1.25 kPa
0-6" w.c. & 0-1.5 kPa
0-8" w.c. & 0-2 kPa
0-10" w.c. & 0-2.5 kPa
0-15" w.c. & 0-3.7 kPa
0-20" w.c. & 0-5 kPa
0-25" w.c. & 0-5.2 kPa
0-30" w.c. & 0-7.5 kPa
0-40" w.c. & 0-10 kPa
00-50" w.c. & 0-12.4 kPa
0-60" w.c. & 0-15 kPa
0-100" w.c. & 0-25 kPa
0-200" w.c. & 0-50 kPa
5-0-5" w.c. & 1.25-0-1.25 kPa
0-0.25" w.c. & 0-2000 fpm
0-0.5" w.c. & 0-2800 fpm
0-1" w.c. & 0-4000 fpm
0-2" w.c. & 0-5600 fpm
0-5" w.c. & 0-8800 fpm
0-10" w.c. & 0-12500 fpm
0-15" w.c. & 0-15500 fpm
0-20" w.c. & 0-17500 fpm
0-25" w.c. & 0-20000 fpm
0-60 Pa & 0-9.8 m/s
0-125 Pa & 0-14.4 m/s
0-250 Pa & 0-20 m/s
0-500 Pa & 0-28 m/s
0-1.25 kPa & 0-45 m/s
0-2 kPa & 0-57 m/s
0-3.5 kPa & 0-76 m/s
0-5 kPa & 0-90 m/s
0-6 kPa & 0-98 m/s
0-1 psid
0-2 psid
0-3 psid
0-4 psid
0-5 psid
0-6 psid
0-8 psid
0-10 psid
0-15 psid
0-20 psid
0-30 psid
0-.25" Hg
0-.5" Hg
0-1" Hg
0-1.5" Hg
0-2" Hg
0-3" Hg
0-4" Hg
0-5" Hg
0-6" Hg
0-7" Hg
0-8" Hg
0-9" Hg
0-10" Hg
0-11" Hg
0-12" Hg
0-15" Hg
0-16" Hg
0-20" Hg
0-25" Hg
0-30" Hg
0-40" Hg
0-50" Hg
0-60" Hg
0.25-0-0.25" Hg
0.5-0-0.5" Hg
1-0-1" Hg
5-0-5" Hg
15-0-15" Hg
0-0.5 mm Hg
0-1 mm Hg
0-2 mm Hg
0-4 mm Hg
0-5 mm Hg
0-6 mm Hg
0-7 mm Hg
0-8 mm Hg
0-9 mm Hg
0-10 mm Hg
0-11 mm Hg
0-12 mm Hg
0-15 mm Hg
0-20 mm Hg
0-25 mm Hg
0-30 mm Hg
0-35 mm Hg
0-40 mm Hg
0-50 mm Hg
0-60 mm Hg
0-80 mm Hg
0-100 mm Hg
0-150 mm Hg
0-200 mm Hg
0-250 mm Hg
0-300 mm Hg
0-350 mm Hg
0-400 mm Hg
30-0-30 mm Hg
0-6 mm w.c.
0-8 mm w.c.
0-10 mm w.c.
0-12 mm w.c.
0-15 mm w.c.
0-20 mm w.c.
0-25 mm w.c.
0-30 mm w.c.
0-35 mm w.c.
0-40 mm w.c.
0-50 mm w.c.
0-60 mm w.c.
0-75 mm w.c.
0-80 mm w.c.
0-100 mm w.c.
0-125 mm w.c.
0-150 mm w.c.
0-200 mm w.c.
0-250 mm w.c.
0-300 mm w.c.
0-350 mm w.c.
0-375 mm w.c.
0-400 mm w.c.
0-500 mm w.c.
0-600 mm w.c.
0-700 mm w.c.
0-750 mm w.c.
0-800 mm w.c.
0-100 x 10 mm w.c.
0-120 x 10 mm w.c.
0-150 x 10 mm w.c.
0-160 x 10 mm w.c.
0-180 x 10 mm w.c.
0-200 x 10 mm w.c.
0-300 x 10 mm w.c.
0-400 x 10 mm w.c.
0-500 x 10 mm w.c.
3-0-3 mm w.c.
5-0-5 mm w.c.
6-0-6 mm w.c.
7-0-7 mm w.c.
10-0-10 mm w.c.
15-0-15 mm w.c.
20-0-20 mm w.c.
25-0-25 mm w.c.
30-0-30 mm w.c.
40-0-40 mm w.c.
50-0-50 mm w.c.
75-0-75 mm w.c.
80-0-80 mm w.c.
100-0-100 mm w.c.
125-0-125 mm w.c.
150-0-150 mm w.c.
160-0-160 mm w.c.
200-0-200 mm w.c.
225-0-225 mm w.c.
250-0-250 mm w.c.
300-0-300 mm w.c.
350-0-350 mm w.c.
375-0-375 mm w.c.
400-0-400 mm w.c.
500-0-500 mm w.c.
0-1.5 cm w.c.
0-2 cm w.c.
0-2.5 cm w.c.
0-3 cm w.c.
0-4 cm w.c.
0-5 cm w.c.
0-6 cm w.c.
0-8 cm w.c.
0-10 cm w.c.
0-15 cm w.c.
0-20 cm w.c.
0-25 cm w.c.
0-30 cm w.c.
0-35 cm w.c.
0-40 cm w.c.
0-50 cm w.c.
0-60 cm w.c.
0-80 cm w.c.
0-100 cm w.c.
0-125 cm w.c.
0-150 cm w.c.
0-200 cm w.c.
0-250 cm w.c.
0-300 cm w.c.
0-350 cm w.c.
0-400 cm w.c.
0-500 cm w.c.
0-600 cm w.c.
0-700 cm w.c.
0-100 x 10 cm w.c.
1-0-1 cm w.c.
1.5-0-1.5 cm w.c.
2-0-2 cm w.c.
2.5-0-2.5 cm w.c.
5-0-5 cm w.c.
10-0-10 cm w.c.
15-0-15 cm w.c.
20-0-20 cm w.c.
25-0-25 cm w.c.
30-0-30 cm w.c.
40-0-40 cm w.c.
50-0-50 cm w.c.
10-0-50 Pa
0-30 Pa
0-60 Pa
0-100 Pa
0-125 Pa
0-150 Pa
0-200 Pa
0-250 Pa
0-300 Pa
0-350 Pa
0-400 Pa
0-500 Pa
0-700 Pa
0-750 Pa
0-800 Pa
0-1000 Pa
0-100 x 10 Pa
0-1250 Pa
0-125 x 10 Pa
0-1500 Pa
0-150 x 10 Pa
0-2000 Pa
0-200 x 10 Pa
0-2500 Pa
0-250 x 10 Pa
0-3000 Pa
0-300 x 10 Pa
0-4500 Pa
0-450 x 10 Pa
0-5000 Pa
0-500 x 10 Pa
0-6000 Pa
0-600 x 10 Pa
0-8000 Pa
0-800 x 10 Pa
30-0-30 Pa
40-0-40 Pa
50-0-50 Pa
60-0-60 Pa
100-0-100 Pa
125-0-125 Pa
150-0-150 Pa
200-0-200 Pa
250-0-250 Pa
300-0-300 Pa
500-0-500 Pa
600-0-600 Pa
700-0-700 Pa
1000-0-1000 Pa
100-0-100 x 10 Pa
1500-0-1500 Pa
150-0-150 x 10 Pa
2500-0-2500 Pa
250-0-250 x 10 Pa
3000-0-3000 Pa
300-0-300 x 10 Pa
0-0.1 kPa
0-0.2 kPa
0-0.3 kPa
0-0.5 kPa
0-1 kPa
0-1.25 kPa
0-1.5 kPa
0-2 kPa
0-2.5 kPa
0-3 kPa
0-3.5 kPa
0-4 kPa
0-5 kPa
0-6 kPa
0-8 kPa
0-10 kPa
0-12 kPa
0-12.5 kPa
0-15 kPa
0-20 kPa
0-25 kPa
0-30 kPa
0-35 kPa
0-40 kPa
0-50 kPa
0-60 kPa
0-70 kPa
0-75 kPa
0-80 kPa
0-100 kPa
0-140 kPa
0-170 kPa
0-200 kPa
0.2-0-0.2 kPa
0.5-0-0.5 kPa
1-0-1 kPa
1.25-0-1.25 kPa
1.5-0-1.5 kPa
2-0-2 kPa
2.5-0-2.5 kPa
3-0-3 kPa
3.5-0-3.5 kPa
3.75-0-3.75 kPa
4-0-4 kPa
5-0-5 kPa
6-0-6 kPa
8-0-8 kPa
10-0-10 kPa
0-1 Millibar
0-1.5 Millibar
0-2 Millibar
0-2.5 Millibar
0-3 Millibar
0-4 Millibar
0-5 Millibar
0-6 Millibar
0-8 Millibar
0-10 Millibar
0-12 Millibar
0-15 Millibar
0-20 Millibar
0-25 Millibar
0-30 Millibar
0-35 Millibar
0-40 Millibar
0-50 Millibar
0-60 Millibar
0-75 Millibar
0-80 Millibar
0-100 Millibar
0-125 Millibar
0-150 Millibar
0-200 Millibar
0-250 Millibar
0-300 Millibar
0-350 Millibar
0-400 Millibar
0-500 Millibar
0-600 Millibar
0-700 Millibar
0-800 Millibar
0-100 x 10 Millibar
1-0-1 Millibar
1.5-0-1.5 Millibar
2-0-2 Millibar
2.5-0-2.5 Millibar
3-0-3 Millibar
5-0-5 Millibar
10-0-10 Millibar
12-0-12 Millibar
15-0-15 Millibar
20-0-20 Millibar
25-0-25 Millibar
30-0-30 Millibar
35-0-35 Millibar
40-0-40 Millibar
50-0-50 Millibar
250-0-250 Millibar
0-0.5 ounces per square inch
0-1 ounces per square inch
0-2 ounces per square inch
0-3 ounces per square inch
0-4 ounces per square inch
0-6 ounces per square inch
0-8 ounces per square inch
0-10 ounces per square inch
0-15 ounces per square inch
0-16 ounces per square inch
0-20 ounces per square inch
0-30 ounces per square inch
0-32 ounces per square inch
0-40 ounces per square inch
0-50 ounces per square inch
0-80 ounces per square inch
0-100 ounces per square inch
1-0-1 ounces per square inch
0-0.20 bar
0-0.5 bar
0-1 bar
0-1.5 bar
0-2 bar
0-0.5 kg/cm²
0-1 kg/cm²
0-1.5 kg/cm²
0-2 kg/cm²
0-10" w.c. & 0-20 SCFM air (w/1" NPT Tube)
0-10" w.c. & 0-50 SCFM air (w/1.5" NPT Tube)
0-10" w.c. & 0-85 SCFM air (w/2" NPT Tube)
0-10" w.c. & 0-200 SCFM air (w/3" NPT Tube)
0-10" w.c. & 0-350 SCFM air (w/4" NPT Tube)
0-20" w.c. & 0-30 SCFM air (w/1" NPT Tube)
0-20" w.c. & 0-70 SCFM air (w/1.5" NPT Tube)
0-20" w.c. & 0-120 SCFM air (w/2" NPT Tube)
0-20" w.c. & 0-290 SCFM air (w/3" NPT Tube)
0-20" w.c. & 0-500 SCFM air (w/4" NPT Tube)
0-40" w.c. & 0-40 SCFM air (w/1" NPT Tube)
0-40" w.c. & 0-100 SCFM air (w/1.5" NPT Tube)
0-40" w.c. & 0-160 SCFM air (w/2" NPT Tube)
0-40" w.c. & 0-395 SCFM air (w/3" NPT Tube)
0-40" w.c. & 0-675 SCFM air (w/4" NPT Tube)
 
OPTIONS   ASF
AHU1
AHU2
AT
BUNA
CB
COO
FC
G
HA
HC
HP
IC
LT
M
MP
NIST
R
RM
SB
SF
SPCL
SS
ST
TA
VIT
Y
Adjustable Signal Flag
Mounting Plate Only
Mounting Plate with A-481 Accessory Kit
Aluminum Tag
Buna-N Elastomers
Chrome Bezel
Certificate of Origin
Factory Calibration Certificate
Green Scale Overlay
High Accuracy
Horizontal Calibration (90 Deg Face Up)
High Pressure
Impregnated Case
Low Temperature
Mirror Scale Overlay
Medium Pressure
NIST Traceable Calibration Certificate
Red Scale Overlay
Replacement Mag for Venturi Flow Tubes Only
304 Stainless Steel Bezel
Silicone Free
Special Cleaning
Brushed 304SS Bezel
Stainless Steel Tag
Tilt Angle from Vertical in Degrees
Fluoroelastomers
Yellow Scale Overlay

Questions

Question
How will installation of a Magnehelic® gage 150' away from the pressure source affect accuracy?
Answer
Accuracy will not be affected, but response time will be increased in proportion to the length of the tubing.
Question
Can the standard Magnehelic® or Capsuhelic® gage be installed outdoors?
Answer
Yes. Front covers are sealed with "O" rings. Capsuhelic vent holes are plugged with foam, and the new high impact acrylic lens material is very resistant to ultra-violet fogging. Additional care is recommended to lead pressure connections downward from the gage and provide as much protection from the elements as possible
Question
Can a standard Magnehelic® gage be used for natural gas or propane service?
Answer
No. As the silicone diaphragm will be attacked by these gases. A Buna-N diaphragm should be specified.
Question
What happens when a Magnehelic® gage equipped with the low temperature option is operated below -20 degrees Fahrenheit (-29 degrees Celsius)?
Answer
Below that temperature the accuracy of the gage deteriorates beyond our published specification due to stiffening of the diaphragm.
Question
Is National Institute of Standards and Technology traceability available for the Magnehelic® Gage?
Answer
No. But Magnehelic® gages can be given a special 6 point calibration check with an NIST traceable master gage and a certificate can be supplied.
Question
How do I hook up my Magnehelic® Gage?
Answer
In Bulletin A-27 under operation, it explains how to connect the Magnehelic to the following applications: positive pressure, negative pressure, and differential pressure.
Question
Your Magnehelic gauge doesn't come with a calibration certificate, do you have any documentation for these gauges to meet these needs?
Answer
We have 3 options: (1) We can supply a Certificate of Conformance at no charge if you request that certificate at the time of order. The Certificate of conformance would state that each Magnehelic gauge is calibrated to meet the specifications stated on the spec sheet. (2) We offer a factory calibration “-FC” as an option that is a certificate of the standard calibration points at the time of manufacture, for a small fee. (3) We can also provide a NIST-traceable calibration for an extra charge per gage if that is required. To get the NIST-traceable calibration, you would simply add a “-NIST” to the end of your part number. NIST-traceable calibrations will come with the 6 point calibration certificate. We recommend “periodic calibration” for our Magnehelic, though we leave the specific time-frame up to the end user, since different organizations have different requirements (i.e. government groups often require more frequent calibrations.) If you choose to have the NIST traceable calibration done, the NIST group (the National Institute of Standards and Technology) dictates yearly calibration and it will be printed on the certificate.
Question
I am looking to measure velocity in a 4" pipe that is used as air conveyance. We use an eductor and a single stage blower to produce air flow. I am looking to measure pressure and velocity. I purchased a Dwyer Pitot tube, 167-7 108024-00 for the job, and I want to match with the right gauge. I need to be in the range of 2600 cuft/min at maybe 0.5psi. Can you direct me to the right gauge with that information?
Answer
To monitor flow through your 4” pipe, you will have to size the appropriate differential pressure gage. A very common gage that is used will be our Series 2000 Magnehelic gage. This gage can be ordered with a square root output that will direct read in flow units. Upon ordering this part, you will have to specify the maximum differential pressure at your desired flow rate. The following text will bring you to the equations necessary to compute this differential (velocity) pressure. This can also be found in the APPLICATION GUIDES section of our website.
Question
I have a Magnehelic gage 2000-00N I purchased for a clean room. Should the installers set the "set" screw to get the gage back to (0) or will that mess up the calibration? My invoice # if you need to look at what I purchased is 04844623.
Answer
After the Magnehelic has been installed, disconnect pressure lines to vent both sides of the gage to the atmosphere and re-zero. This will not mess up the calibration. This should be done occasionally.
Question
What restrictions, if any, are imposed for the Magnehelic® and Photohelic® gages in vacuum service?
Answer
In applications involving higher vacuums than 20" Hg, leakage due to gage housing porosity becomes the limiting factor.
Question
How do I hook up my Magnehelic® gage for an air velocity application with a pitot tube?
Answer
In our Application Guides on flow products, we explain very well how to take air velocity readings. The total pressure connection on the pitot tube is connected to one of the high pressure ports on the gage. The other high pressure port is plugged. The static pressure connection on the pitot tube is connected to one of the low pressure ports on the gage. The other low pressure port is plugged.
Question
Are air velocity scales available?
Answer
Yes, the information we require to supply the proper range is the velocity (fpm or m/s) or velocity pressure (inches of water or kpa) and density of air (lb/ft3 or g/cm3).
Question
Why must Dwyer pressure switches be mounted with the diaphragm in the vertical plane?
Answer
In other than a vertical plane, the diaphragm can sag and cause a shift in set-point or a change in the adjustable set-point range. The switch may even fail to reset at the minimum set-points. This is the same phenomena that causes inaccuracy in Magnehelic® and Capsuhelic® gages when mounted in other than a vertical position.
Question
What might be the cause for Magnehelic® gages filling approximately 1/3 full of water, with lots of liquid droplets on the glass. Both are outside mounted on the side of an air stripping tower. One is a differential pressure gage that measures the pressure drop across a pitot tube. The other just measures the back pressure in the stripper. What can be done to fix the malfunction?
Answer
It looks like you’re getting some condensation in the Magnehelic®, which is causing it to collect on the bottom of the face. Since the Magnehelic® is not encapsulated, it is not recommended to be used in applications where moisture can form. One option to fix the problem is installing a liquid filter (like an F222) to filter out that moisture. Another option is to install a Capsuhelic (Series 4000), which is made to handle both air and liquid.
Question
Can the ASF option be used as a tattle tell? Or do you have something that could be used as a tattle tell on the 2000 series DP gages?
Answer
The ASF option cannot be used as a tattle tell. It is just there for visual indication of a set point. We have nothing with our 2000 series that can act as a tattle tell, however our series DM-1000 DigiMag will have a peak valve function built in.
Question
I have a Dwyer Magnehelic, can I pressure test a furnace gas valve with natural gas with this instrument?
Answer
The standard Magnehelic is not recommended for use with natural gas. For natural gas applications, we would recommend a Magnehelic with a Buna-N diaphragm and an oil impregnated case for better chemical compatibility and a reduced leak rate respectively.
Question
For the Series 2000 Magnehelic Differential Pressure Gauges, what panel mounts are compatible with the A-135 rubber gasket?
Answer
Any of our panel or flush mounting brackets will work with the A-135 rubber gasket. The rubber gasket just gives you a tight seal between the Magnehelic’s bezel and the bracket.
Question
Is the Magnehelic 2000 suitable for use in a Class 1 Div 1 environment?
Answer
No, the 2000 Series Magnehelic Differential Pressure Gauge does not have any certifications officially allowing it to be used in a Class 1 Div 1 environment.
Question
Calibration details?
Answer
Standard gages are calibrated in the vertical position, and should be used in that position for maximum stated accuracy. Ranges above 17.5 in w.c. may be used at any angle, and stay within specified accuracy, by simply re-zeroing. Ranges below 17.5 in w.c. should be ordered using the –TA tilt angle option with the angle specified.
Question
I have a model 2004 without the pressure relief plug, is it possible to acquire one?
Answer
The part number for the blowout plug is 440651-01.
Question
We use the model 2310 & Mount Ring A-286, I'm looking for a 3D or STP file for both. The current models I have are lacking in detail.
Answer
All of our available drawings are on our Website, under the Drawings tab. We do offer a 3-D drawing for Series 2000 and for A-286. The drawing for Series 2000 is a generic drawing.
Question
While using the model 2300-00 to measure negative pressure, when looking at the gauge how would I know the area is under negative pressure.
Answer
The needle will move below zero, and not above zero. Left hand movements from zero are negative, and right hand movements from zero are positive.
Question
Is there a differential pressure gage with a lower temperature limit down to -20F?
Answer
Yes, the 2000 series with a -LT option for low temperature will be rated down to -20 F.
Question
What is the best method of measuring actual air flow in process ducts to verify process air flow sensors (differential pressure sensors, air flow stations, etc.)
Answer
There are two ways to measure air flow in process ducts. The most common means is the use of a Series 2000 Magnehelic® Differential Pressure Gage. This gage can be ordered with a square root output that will read in flow units. You will have to specify the maximum differential pressure at your desired flow rate. Along with the gage, a pitot tube (connected by means of rubber or vinyl tubing) is also used. The pitot tube must be pointed directly into the air stream. Care must be taken to ensure that the pitot tube should be inserted at least 8-1/2 duct diameters downstream from elbows, bends or other obstructions which cause turbulence. The alternative method uses a 100 AV Durablock® Air Velocity Gage kit. The kit includes a manometer, a stainless steel pitot tube, rubber tubing with connectors, and red gage fluid. The pitot tube, pointed directly into the air stream, senses total and static pressure. The manometer then senses velocity pressure (difference between total and static pressure).
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Model Description Availability* Price
A-135 Silicone rubber gasket for panel mounting (Series 2000, DM-2000, DM-1000, 605) 1-3 days*
$5.40
A-286 4-1/2" Gage panel mounting flange 1-3 days*
$16.05
A-299 Mounting bracket flush mount Magnehelic® gage in bracket. Bracket is then surface mounted . Steel with gray hammertone epoxy finish. 6.3" x 7.7" x 4.0", 1.30 lb. 1-3 days*
$41.55
A-300 Flat aluminum bracket for flush mounting Magnehelic® gage. 6.8" x 6.0" x .1", .35 lb. 1-3 days*
$36.65
A-310A 3-way vent valve, plastic, 1/8" NPT to 1/4" metal tubing, 80 psi rating, replaces former Model A-310 (brass). 2.3" x .8" x .1", .10 lb. 1-3 days*
$23.75
A-320-A1 Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, includes 2 sections of precut silicone tubing, banjo fittings, and threaded pressure connections pre-installed. 1-3 days*
$243.20
A-320-B1 Weatherproof enclosure, ABS, compatible with Series 3000MR/MRS Photohelic®, Series 605 Magnehelic®, Series DH3 Digihelic® (to fit, the casing on the electrical plug must be removed), Series 2000 Magnehelic® with medium and high pressure options 1-3 days*
$326.00
A-320-A-SS Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage 6-7 Weeks*
$838.35
A-320-B-SS Instrument enclosure, 304SS, brushed finish, compatible with 2000 Magnehelic® gage, DM-2000 differential pressure transmitter 1-3 days*
$847.65
A-320-BC Weatherproof enclosure, ABS, compatible with Series 2000 Magnehelic®, DM-1000 DigiMag®, DM-2000, Series 605 (with -SS option), instruments with backwards compatible bezel option 1-3 days*
$326.00
A-321 Brass safety relief valve, protects Magnehelic® gage or Photohelic® switch/gage against over pressure due to regulator failure, etc, opens at 10 psi. Mounts in tee fitting. 1/4" NPT(M) (use two for DP application). .5" x .5" x 1.5", .10 .lb 1-3 days*
$57.25
A-368 Surface mounting plate, aluminum, for Magnehelic® gage. 1-3 days*
$10.55
A-369 Stand-hang bracket, aluminum, for Magnehelic® gage. 1-3 days*
$16.50
A-371 Surface mounting bracket, use with Photohelic® switch/gage on horizontal or vertical surfaces, also for Capsu-Photohelic® switch/gage on vertical only. Also Magnehelic® -MP, -HP models. 1-3 days*
$52.10
A-401 Plastic carrying case (7-9/16" x 5-7/8" x 2-13/16"). 1-3 days*
$35.60
A-432 Plastic carrying case for Magnehelic® gage of standard range, except high pressure connection, includes 9 ft (2.7m) of 3/16" ID rubber tubing, stand-hang bracket & terminal tube with holder. 9.1" x 7.4" x 3.6", 1.30 .lb 1-3 days*
$64.00
A-448 3-piece magnet kit for mounting Magnehelic® gage directly to a magnetic surface, 3.3" x 1.7" x .5", .20 .lb 1-3 days*
$14.70
A-464 Flush mount kit for Magnehelic® gages (Magnehelic® sold separately) 1-3 days*
$28.10
A-464-SS Stainless steel flush mounting kit for the Magnehelic® gages (Magnehelic® sold separately) 1-3 days*
$131.45
A-481 Installer kit, (includes 2 static pressure tips and PVC tubing). 1-3 days*
$6.60
A-605 Air filter kit - adapts any standard Magnehelic® gage for use as an air filter gage. Includes aluminum surface mounting bracket with screws, (2) 5 ft (1.5 m) lengths of 1/4" aluminum tubing, (2) static pressure tips & (2) molded plastic vent valves. 1-3 days*
$49.80
A-605B Air filter kit with (2) plastic open/close valves, (2) 4" steel static tips, tubing & mounting flange 1-3 days*
$39.15
A-605C Air filter kit with (2) plastic open/close valves, (2) plastic static tips, tubing & mounting flange 1-2 Weeks*
$30.70
A-607 Mounting panel for Magnehelic® 1-2 Weeks*
$6.30
A-610 Pipe mounting kit for 1-1/4" to 2" pipe. 5.6" x 4.6" x 1.4", 1.0 .lb (Magnehelic® sold separately) 1-3 days*
$36.65
200068-51 Mounting hardware kit for standard Magnehelics® (not MP or HP). Included in the kit: 2 each: A-339 adapters, A-330 pipe adapters; 3 each: mounting lugs, long screws, short screws) 1-3 days*
$12.40