PRESSURE Series 2000 Magnehelic Differential Pressure ...

1 Differential PRESSURE GagesPRESSUREDWYER INSTRUMENTS, INC.| Differential PRESSURE GagesIndicate positive , Negative or Differential , Accurate within 2%RoHSSelect the dwyer Magnehelic gagefor high accuracy guaranteed within 2% offull-scale and for the wide choice of 81 models available to suit your needs precisely. UsingDwyer's simple, frictionless Magnehelic gage movement, it quicklyindicates low air or non-corrosive gas pressures either positive , negative (vacuum) or Differential . The designresists shock, vibration and over-pressures. No manometer fluid to evaporate, freeze orcause toxic or leveling problems. It's inexpensive, Magnehelic gage is the industry standard to measure fan and blower pressures,filter resistance, airvelocity, furnace draft, PRESSURE drop across orifice plates, liquidlevels with bubbler systems and pressures in fluid amplifier or fluidic systems.

2 It alsochecks gas-air ratio controls and automatic valves, and monitors blood and respiratorypressures in medical care single case size is used for most models of Magnehelic gages. They can be flushor surface mounted with standard hardware supplied. Although calibrated for verticalposition, many ranges above 1 may be used at any angle by simply , for maximum accuracy, they must be calibrated in the same position inwhich they are used. These characteristics make Magnehelic gages ideal for bothstationary and portable applications. A 4-9/16 hole is required for flush panelmounting. Complete mounting and connection fittings, plus instructions, arefurnished with each instrument. See pages 6 and 7 for more information on : Air and non-combustible, compatible gases (natural gas option available).Note:May be used with hydrogen. Order a Buna-N diaphragm. Pressures must beless than 35 Materials:Consult factory.

3 Housing: Die cast aluminum case and bezel, with acrylic cover. Exterior finish iscoated gray to withstand 168 hour salt spray corrosion test. Accuracy: 2% of FS ( 3% on - 0, -100 Pa, -125 Pa, 10MM and 4% on - 00, -60Pa, -6MM ranges), throughout range at 70 F ( C). PRESSURE Limits: -20 in Hg to 15 psig ( to bar); MP option: 35 psig( bar); HP option: 80 psig ( bar).Overpressure: Relief plug opens at approximately 25 psig ( bar), standardgages only. See Overpressure Protection Note on next Limits: 20 to 140 F* ( to 60 C). -20 F (-28 C) with low temperature : 4 ( mm) diameter dial Orientation: Diaphragm in vertical position. Consult factory for otherposition orientations. Process Connections: 1/8 female NPT duplicate high and low PRESSURE taps -one pair side and one pair : 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 adapter, and three flush mounting adapters withscrews.

4 (Mounting and snap ring retainer substituted for three adapters in MP &HP gage accessories.)Agency Approval:RoHS. Note: -SP models not RoHS approved. 1/8 FEMALE NPTHIGH PRESSURECONNECTION1-3/4( )1/2( )1/8 FEMALENPT LOWPRESSURE CONNECTION11/16( )17/32( ) 4-3/4 ( ) PANEL CUTOUT 5(127) 4-47/64( )3/16( )2-17/32( )15/32( ) 4-1/2( )1-1/4( ) 5-1/2( ) MOUNTING RINGRUBBER PRESSURE RELIEF PLUG WILL UNSEAT ITSELFWHEN gage ISOVERPRESSURIZED(3) 6-32 X 3/16 ( ) DEEP HOLESEQUALLY SPACED ON A 4-1/8( ) BOLT CIRCLE FORPANEL MOUNTING1/8 FEMALE NPTHIGH PRESSURE CONNECTION1-3/4( )1/2( )1/8 FEMALE NPTLOW PRESSURECONNECTION11/16( )15/32( )1-11/16( ) 4-1/2( )1-1/4( )17/32( ).025 (.64) SPACE CREATED BY 3 SPACER PADS WHEN SURFACE MOUNTED. DO NOT OBSTRUCT. PROVIDES PATH FOR RELIEF OF OVERPRESSURE. 1/8 FEMALENPT HIGH PRESSURECONNECTION1/8 FEMALENPT LOW PRESSURECONNECTION7/16( ) 4-3/4( )Flush, Surface or Pipe MountedEnclosure MountedACCESSORIES For applications with high cycle rate within gage total PRESSURE rating, next higher ratingis recommended.

5 See Medium and High PRESSURE options at lower Air Filter gage Accessory Kit, Air filter kit with two plastic open/closevalves, two 4 steel static tips, plastic tubing and mounting flange .. Air Filter gage Accessory Kit, Air filter kit with two plastic open/closevalves, two plastic static tips, plastic tubing and mounting flange .. A-432 Portable KitCombine carrying case with any Magnehelic gage ofstandard range, except high PRESSURE 9 ft ( m) of 3/16 ID rubber tubing,standhang bracket and terminal tube with holder ..$ A-605 Air Filter gage Accessory KitAdapts any standard Magnehelic gage for use as anair filter gage . Includes aluminum surface mountingbracket with screws, two 5 ft ( m) lengths of 1/4 aluminum tubing two static PRESSURE tips and twomolded plastic vent valves, integral compressionfittings on both tips and valves .. 2 7/16/12 10.

6 56 AM Page 45 Differential PRESSURE GagesPRESSURES eries2000 Magnehelic gage Models & RangesDual Scale Air Velocity UnitsFor use with pitot tubeZero Center Ranges2300-6MM 2300-10MM 2300-20MM Model 2000 -00AV 2000 -0AV 2001AV2002AV2005AV2010 AVModel 2000 -60 NPA 2000 -60PA 2000 -100PA 2000 -125PA 2000 -250PA2000-300PA2000-500PA2000-750PA 2000 -1000 PAModel 2000 -6MM 2000 -10MM 2300-100PA 2300-120PA2300-200PA2300-250PA2300-300PA 2300-500PA2300-1000 PADual Scale English/Metric ModelsModel 2000 -00D 2000 -0D 2001D2002D2003D2004D2005D2006D2008D2010D 2015D2020D2025D2050D2060 DRange,in Center RangesZero Center Ranges2300-00 2300-0 230123022304231023202330 Model220122022203220422052210*2215*2220* 2230**Model2000-15CM2000-20CM2000-25CM20 00-50CM2000-80CM2000-100CM2000-150CM2000 -200CM 2000 -250CM2000-300CM2300-4CM2300-10CM230 0-30 CMModel 2000 -00N 2000 -00 2000 -0 2001200220032004200520062008201020122015 2020202520302040205020602080210021202150 21602180*2250* These ranges calibratedfor vertical scale position.

7 Accuracy +/-3% Accuracy +/-4%*MP option standard**HP option standardZero Center RangesZero Center RangesO-ring sealfor cover assures PRESSURE integrity of PROTECTIONB lowout plugis comprised of a rubber plug on the rear whichfunctions as a relief valve by unseating and venting the gageinterior when over PRESSURE reaches approximately 25 psig ( ). To provide a free path for PRESSURE relief, there are fourspacer pads which maintain clearance when gage issurface mounted. Do not obstruct the gap created by these blowout plug is not used on models above 180 of waterpressure, medium or high PRESSURE models, or on gages whichrequire an elastomer other than silicone for the blowout plug should not be used as a system overpressurecontrol. High supply pressures may still cause the gage to fail dueto over pressurization, resulting in property damage or seriousinjury.

8 Good engineering practices should be utilized to preventyour system from exceeding the ratings or any component. Die cast aluminum caseis precision made and iridite-dipped towithstand 168 hour salt spray corrosion test. Exterior finished inbaked dark gray hammerloid. One case size is used for allstandard PRESSURE options, and for both surface and rubber diaphragmwith integrally molded O-ring issupported by front and rear plates. It is locked and sealed inposition with a sealing plate and retaining ring. Diaphragm motionis restricted to prevent damage due to Cobalt magnetmounted at one end of range springrotates helix without mechanical flange for flush mounting in plastic faceis highly resistant to breakage. Providesundistorted viewing of pointer and litho-printed scaleis accurate and easy to tipped pointerof heat treated aluminum tubing is easyto see.

9 It is rigidly mounted on the helix stopsof molded rubber prevent pointerover-travelwithout damage. Wishbone assemblyprovides mounting for helix, helixbearings and pointer bearingsare shock-resistant mounted;providevirtually friction-free motion for helix. Motion damped with high viscosity silicone adjustment screwis conveniently located in the plastic cover, and is accessible without removing cover. O-ring seal provides PRESSURE 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 rangespring is flat spring steel. Small amplitude of motion assures consistency and long life. It reacts to PRESSURE on diaphragm. Live length adjustable for AND VOLUMETRIC FLOW UNITSS cales are available on the Magnehelic that read in velocity units (FPM, m/s) or volumetric flow units (SCFM, m3/s, m3/h).

10 Stocked velocity units with dual range scales in and feet per minute are shown above. For other ranges contact the factory. When ordering volumetric flow scales please specify the maximum flow rate and its corresponding PRESSURE . Example: in = 16,000 TO ORDER | 800/872-9141 Range Price$ $ , $ ,Pa or kPa0-62 Pa0-125 Pa0-250 Pa0-500 Pa0-750 kPa0-5 kPa0-15 kPaPrice$ $ $ $ $ , Pa10-0-500-600-1000-125 0-250 0-3000-500 0-7500-1000 Range MMof Water0-6 0-100-150-250-30 0-500-80 0-1000-1250-1500- 2000 -2500-300 Range, Pa30-0-3050-0-5060-0-60100-0-100125-0-12 5150-0-150250-0-250500-0-500 Range Inches of 0-100-120-15 0-20 0-25 0-30 0-400-500-600-800-1000-1200-1500-1600-18 00-250 Price$ $ $ 0-10-20-30-40-50-100-150-200-30 ,CM ofWater0-150-200-25 0-50 0-80 0-100 0-150 0-200 0-2500-300 Price$ $ 3-Way Vent Valves ..$ applications where PRESSURE is continuous and theMagnehelic gage is connected by metal or plastictubing which cannot be easily removed, we suggestusing dwyer A-310A vent valves to connect can then be removed to check or re-zero , Safety Relief Valve.