Magnehelic Differential Pressure Gauges Series 2000

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 theSeries 2000 Magnehelic Gagefor a versatile low differential pressure gage with a wide choice of 81 models and 27 options to choose from. Using Dwyers 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.

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

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 70F (21.1C).

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 140F (-6.67 to 60C). -20F (-28C) 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.)

Compliance:Meets the technical requirements of EU Directive 2011/65/EU (RoHS II). Note: -SP models not RoHS approved.

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 readgage through undistorted plastic face permits viewing from far away
• Patenteddesign provides quick response to pressure changes means no delay in assessing critical situations
• Durable and rugged housingand high-quality components combine to provide longservice life and minimized down-time
• High accuracyoption is twice as accurate as the standard Magnehelic gage.
• Bezelprovides flange for flush mounting in panel.
• Clear plastic faceis highly resistant to breakage. Provides undistorted viewing of pointer and scale.
• Precision litho-printed scaleis accurate and easy to read.
• Red tipped pointerof heat treated aluminum tubing is easy to see. It is rigidly mounted on the helix shaft.
• Pointer stopsof molded rubber prevent pointer over-travel without damage.
• “Wishbone” assemblyprovides mounting for helix, helix bearings and pointer shaft.
• Jeweled bearingsare shock-resistant mounted; provide virtually friction-free motion for helix. Motion damped with high viscosity silicone fluid.
• Zero adjustment screwis conveniently located in the plastic cover, and is accessible without removing the cover. O-ring seal provides pressure tightness.
• Helixis 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 springis 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 diaphragmwith 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 caseis 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 plugis 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 sealfor cover assures pressure integrity of case.
• Samarium Cobalt magnetmounted at one end of range spring rotates helix without mechanical linkages.

OPTIONS

• ASFAdjustable Signal Flag
• HPHigh Pressure Option
• LTLow Temperatures to -20F
• MPMed. Pressure Option
• SPSetpoint Indicator
• Scale OverlaysRed, 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.

• AHU1Furnished with attached surface mounting plate
• AHU2Furnished with attached surface mounting plate and including A-481 installer kit (2 plastic static pressure tips and 7of PVC tubing)
• CBChrome bezel option: A chrome plated aluminum bezel for an aesthetically pleasing finish when mounting on metal surfaces such as control panels.
• FCFactory calibration certificate
• NISTNIST traceable calibration certificate
• SBStainless steel bezel option: 304 stainless steel electro polished Ra 16 finished bezel
• SSCorrosion resistant brushed 304 stainless steel bezel

PRODUCT LITERATURE

MANUALS

• Instruction Manual – English
• Instruction Manual (HP or MP Option)
• Instruction Manual (A-610/Pipe Mtg Kit)
• Instruction Manual (Air Filter Gages)
• Quick Start Guide

CATALOG PAGES

• Series 2000 Catalog Page

PRODUCT DATA SHEET

• Series 2000
• Series 2000-HA